WO2014038552A1 - 内燃機関制御システム - Google Patents
内燃機関制御システム Download PDFInfo
- Publication number
- WO2014038552A1 WO2014038552A1 PCT/JP2013/073687 JP2013073687W WO2014038552A1 WO 2014038552 A1 WO2014038552 A1 WO 2014038552A1 JP 2013073687 W JP2013073687 W JP 2013073687W WO 2014038552 A1 WO2014038552 A1 WO 2014038552A1
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- WIPO (PCT)
- Prior art keywords
- throttle opening
- internal combustion
- opening characteristic
- combustion engine
- engine control
- Prior art date
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 58
- 230000008859 change Effects 0.000 claims description 46
- 238000001514 detection method Methods 0.000 claims description 18
- 230000007423 decrease Effects 0.000 claims description 7
- 230000006870 function Effects 0.000 claims description 3
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 13
- 230000001133 acceleration Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/04—Arrangements or mounting of propulsion unit control devices in vehicles of means connecting initiating means or elements to propulsion unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
- F02D11/105—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the function converting demand to actuation, e.g. a map indicating relations between an accelerator pedal position and throttle valve opening or target engine torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/04—Arrangements or mounting of propulsion unit control devices in vehicles of means connecting initiating means or elements to propulsion unit
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- B60W2510/00—Input parameters relating to a particular sub-units
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- B60W2510/244—Charge state
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/0289—Throttle control device with means for establishing a variable resistance torque during throttle opening
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
Definitions
- the present invention relates to an internal combustion engine control system for controlling an internal combustion engine of a vehicle.
- Patent Document 1 discloses a throttle opening that is a relationship between an operation amount of an accelerator pedal and a throttle opening of an internal combustion engine by a driver's switch operation. It is described that the characteristics are changed and the throttle opening of the internal combustion engine is increased even with a small amount of accelerator pedal operation, thereby realizing suitable acceleration.
- the present invention has been created in view of the above circumstances, and an object of the present invention is to provide an internal combustion engine control system capable of suitably linking a driver's intention to accelerate and a change in throttle opening characteristic. .
- the present invention provides an internal combustion engine control system that controls an internal combustion engine of a vehicle, an accelerator pedal operation amount detection unit that detects an accelerator pedal operation amount of the vehicle, and the accelerator pedal operation amount A storage unit that stores a plurality of different throttle opening characteristics of the internal combustion engine, an operation unit that selects the throttle opening characteristic according to an operation, the selected throttle opening characteristic, and the detected accelerator A control unit that controls the throttle opening of the internal combustion engine based on a pedal operation amount, and the control unit operates the accelerator pedal operation after selecting the throttle opening characteristic by the operation of the operation unit.
- the throttle opening characteristic is changed to a selected one on condition that the amount increases.
- the throttle opening characteristic change is waited, and when the driver does not depress the accelerator pedal, the throttle opening characteristic is not changed, It is possible to suitably link the driver's intention to accelerate and change the throttle opening characteristic while preventing acceleration due to an erroneous operation of the driver's operation unit.
- the throttle opening characteristic selected by the operation unit is configured such that an increase in the throttle opening accompanying an increase in the accelerator pedal operation amount is set larger than the throttle opening characteristic before the change. Also good.
- the controller may be configured to change the throttle opening characteristic to that before the change when the operation part is operated again after changing the throttle opening characteristic to the selected one.
- the control unit is configured to change the throttle opening characteristic to the one before the change when there is an operation to decrease the accelerator pedal operation amount after changing the throttle opening characteristic to the selected one. It may be.
- the internal combustion engine control system includes a brake pedal operation detection unit that detects a brake pedal operation of a vehicle, and the control unit detects the brake pedal operation after changing the throttle opening characteristic to a selected one. In this case, the throttle opening characteristics may be changed to those before the change.
- the throttle opening characteristic can be changed to the one before the change at a suitable timing, and the driver's intention to accelerate and the change of the throttle opening characteristic can be suitably linked.
- the internal combustion engine control system includes a vehicle speed detection unit that detects a vehicle speed of the vehicle, and the control unit selects the throttle opening characteristic by operating the operation unit when the vehicle speed is less than a predetermined vehicle speed. Later, even if the accelerator pedal operation amount increases, the throttle opening characteristic change may be prohibited.
- the vehicle includes a motor that functions as a power source of the vehicle together with the internal combustion engine, and a battery that supplies electric power to the motor, and the internal combustion engine control system detects a storage amount of the battery.
- a battery storage amount detection unit that controls the accelerator pedal operation amount after selection of the throttle opening characteristic by operation of the operation unit when the storage amount of the battery is less than a predetermined storage amount. It may be configured that the change of the throttle opening characteristic is prohibited even if increases.
- the internal combustion engine control system includes a steering angle detection unit that detects a steering angle of the vehicle, and when the steering angle exceeds a predetermined steering angle, the control unit detects the throttle by operating the operation unit. After the opening characteristic is selected, the throttle opening characteristic may not be changed even if the accelerator pedal operation amount increases.
- the internal combustion engine control system notifies, based on an output from the control unit, a standby state in which the throttle opening characteristic is selected and an operating state in which the throttle opening characteristic has been changed.
- the structure provided with a notification part may be sufficient.
- the internal combustion engine control system includes a notification unit that notifies a standby state in which the throttle opening characteristic is selected and an operating state in which the throttle opening characteristic has been changed to the selected throttle opening characteristic.
- the configuration may be such that the fact is output to the notification unit.
- Such a configuration can prevent the driver from feeling uncomfortable due to the fact that the throttle opening characteristic cannot be changed.
- the driver's intention to accelerate and the change of the throttle opening characteristic can be suitably linked.
- FIG. 1 is a schematic diagram showing a vehicle to which an internal combustion engine control system according to an embodiment of the present invention is applied.
- 1 is a block diagram showing an internal combustion engine control system according to an embodiment of the present invention. It is a figure which shows the operation part and notification part of a vehicle which concern on embodiment of this invention. It is a graph which shows the relationship between the accelerator pedal operation amount and throttle opening in several throttle opening characteristics. It is a schematic diagram which shows the transition of the state regarding the plus sport mode of the engine control part which concerns on embodiment of this invention.
- (A)-(d) is a figure which shows the example of a display screen of a display part. It is a timing chart for demonstrating the 1st operation example of the engine control part which concerns on embodiment of this invention. It is a timing chart for demonstrating the 2nd operation example of the engine control part which concerns on embodiment of this invention. It is a timing chart for demonstrating the 3rd operation example of the engine control part which concerns on embodiment of this invention.
- a vehicle 1 is a front engine / front drive (FF) vehicle that drives left and right front wheels W FL and W FR that are driving wheels, and serves as a driving force transmission mechanism.
- An engine 11 that is one of the power sources and an internal combustion engine
- a motor 12 that is one of the power sources
- the driving force generated by at least one of the engine 11 and the motor 12 is transmitted to the left and right front wheels W FL and W FR via the transmission 13 and the front wheel drive shaft 14.
- the left and right rear wheels W RL and W RR are driven wheels that rotate as the vehicle 1 travels.
- the transmission 13 is a continuously variable transmission (CVT) that is driven based on the operation of the shift lever SL by the driver.
- An accelerator pedal AP, a brake pedal BP for operating the service brake, and a shift lever SL are provided on the driver's seat side in the vehicle interior of the vehicle 1.
- the vehicle 1 further includes a battery 21 and a DC / DC converter 22.
- the DC / DC converter 22 operates while the engine 11 is operating, and stops when the engine 11 is stopped.
- the DC / DC converter 22 In addition to the power stored in the battery 21 being supplied to the motor 12, the DC / DC converter 22.
- the motor 12 also functions as a motor that collects kinetic energy generated when a brake device (not shown) provided on the wheels W FL , W FR , W RL , W RR is operated as regenerative energy.
- the regenerative energy collected by the machine is stored in the battery 21 as electric power.
- a vehicle 1 includes an accelerator pedal operation amount sensor 31, a brake pedal switch 32, a vehicle speed sensor 33, a steering angle sensor 34, a battery sensor (voltage sensor) as a configuration of the internal combustion engine control system A. ) 35, a battery sensor (current sensor) 36, and a wheel speed sensor 37 (37 FL , 37 FR , 37 RL , 37 RR ).
- the accelerator pedal operation amount sensor 31 is an example of an accelerator pedal operation amount detection unit that detects an accelerator pedal operation amount, detects the operation amount of the accelerator pedal AP by the driver, and outputs it to the ECU 50 described later.
- the brake pedal switch 32 is an example of a brake pedal operation detection unit that detects a brake pedal operation, detects an operation of the brake pedal BP by the driver, and outputs it to the ECU 50. Specifically, the brake pedal switch 32 is OFF when the brake pedal BP is not operated, and outputs an ON signal to the ECU 50 when the brake pedal BP is operated.
- the vehicle speed sensor 33 is an example of a vehicle speed detection unit that detects the vehicle speed that is the vehicle body speed of the vehicle 1, and outputs the detected vehicle speed to the ECU 50.
- the steering angle sensor 34 is an example of a steering angle detection unit that detects the steering angle of the vehicle 1.
- the voltage sensor 35 detects the battery voltage value, which is the voltage value of the battery 21, and outputs it to the ECU 50.
- Current sensor 36 detects a battery discharge current value that is a current value discharged from battery 12 and outputs the detected value to ECU 50.
- Wheel speed sensors 37 FL, 37 FR, 37 RL , 37 RR respectively detect the wheel speeds of the wheels W FL, W FR, W RL , W RR, and outputs to the ECU 50.
- the vehicle 1 includes an operation unit 40 provided in the vehicle interior as a configuration of the internal combustion engine control system A. As shown in FIG. 2, the operation unit 40 includes switches 41, 42, 43, 44 that are pressed when the driver selects each mode related to the throttle opening characteristic.
- the switch 41 is provided on the right side of the handle H of the instrument panel in the passenger compartment, and is a switch for selecting a normal mode to be described later.
- the switch 42 is provided on the right side of the handle H of the instrument panel in the vehicle interior and on the upper side of the switch 41, and is a switch for selecting a sport mode to be described later.
- the switch 43 is provided on the right side of the handle H of the instrument panel in the passenger compartment and below the switch 41, and is a switch for selecting an eco mode to be described later.
- the switch 44 is provided integrally with the handle H in the vehicle interior, and is a switch for selecting a plus sport mode to be described later.
- the switch 44 is erroneously operated when attempting to operate the other switches 41 to 43. Can be prevented.
- the vehicle 1 includes an ECU (Electronic Control Unit) 50 and a notification unit 60 as a configuration of the internal combustion engine control system A.
- the ECU 50 includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read-Only Memory), an input / output circuit, and the like. Based on the detection results of various sensors, the ECU 50 The engine 11 and the motor 12, which are power sources, and the notification unit 60 are controlled.
- the ECU 50 includes a battery storage amount calculation unit 51, a storage unit 52, and an engine control unit 53 as functional blocks.
- the battery storage amount calculation unit 51 calculates the battery storage amount based on the detection results of the voltage sensor 35 and the current sensor 36. Specifically, the battery storage amount calculation unit 51 obtains the capacity of the battery 21 by a state of charge SOC (State Of Charge) indicated by the ratio of the remaining capacity to the full charge capacity. The calculation result by the battery storage amount calculation unit 51 is output to the engine control unit 53.
- SOC State Of Charge
- the storage unit 52 stores a plurality of different throttle opening characteristics of the engine 11 with respect to the accelerator pedal operation amount. As shown in FIG. 4, there are four throttle opening characteristics stored in the storage unit 52 in the present embodiment: normal mode, sport mode, eco mode, and plus sport mode.
- the normal mode is a throttle opening characteristic that is selected when the switch 41 is operated (when no other mode is selected).
- the throttle opening characteristic in the normal mode has a downwardly convex curve in which the throttle opening increases as the accelerator pedal operation amount increases.
- the sport mode is a throttle opening characteristic that is selected when the switch 42 is operated, and the amount of increase in the throttle opening accompanying the increase in the accelerator pedal operation amount is larger than that in the normal mode.
- the throttle opening characteristic in the sport mode has a convex curve as the throttle opening increases as the accelerator pedal operation amount increases.
- the throttle opening in the sport mode is equal to the throttle opening in the normal mode. That is, a driver who wants to accelerate the vehicle 1 can suitably accelerate the vehicle 1 with a small accelerator pedal operation amount by operating the switch 42 to switch to the sports mode.
- the eco mode is a throttle opening characteristic that is selected when the switch 43 is operated, and the increase amount of the throttle opening accompanying the increase of the accelerator pedal operation amount is small as compared with the normal mode.
- the throttle opening characteristic in the eco mode exhibits a downwardly convex curve in which the throttle opening increases as the accelerator pedal operation amount increases.
- the throttle opening in the eco mode is equal to the throttle opening in the normal mode. That is, the driver who wants to suppress the fuel consumption of the vehicle 1 can suppress the acceleration of the vehicle 1 and suppress the fuel consumption by operating the switch 43 to switch to the eco mode.
- the plus sport mode is a throttle opening characteristic that is selected when the switch 44 is operated and other conditions are satisfied. Compared with the sport mode, the throttle opening according to an increase in the accelerator pedal operation amount. The amount of increase is even greater.
- the throttle opening characteristic in the plus sport mode has a convex curve with the throttle opening increasing as the accelerator pedal operation amount increases. When the accelerator pedal operation amount is maximum, the throttle opening in the plus sport mode is equal to the throttle opening in the normal mode. That is, the driver who wants to further accelerate the vehicle 1 can more suitably accelerate the vehicle 1 with a small accelerator pedal operation amount by operating the switch 44 to switch to the plus sport mode and satisfying other conditions. It becomes.
- the engine control unit 53 Based on the operation of the operation unit 40 by the driver, the engine control unit 53 reads the throttle opening characteristic according to the operation content from the storage unit 52 and sets it as the current throttle opening characteristic, and the accelerator pedal operation amount sensor The engine 11 is controlled based on the detection result 31 and the set throttle opening characteristic, and the motor 12 and the notification unit 60 are controlled in connection with the control of the engine 11.
- the engine control unit 53 normally reads the throttle opening characteristic of the normal mode stored in the storage unit 52 and controls the engine 11 based on the read throttle opening characteristic.
- the engine control unit 11 When the switch 42 is pressed, the engine control unit 11 reads the sport mode throttle opening characteristic stored in the storage unit 52 and controls the engine 11 based on the read throttle opening characteristic.
- the engine control unit 11 When the switch 43 is pressed, the engine control unit 11 reads the eco mode throttle opening characteristic stored in the storage unit 52 and controls the engine 11 based on the read throttle opening characteristic. When the switch 41 is pressed while the sport mode or the eco mode is selected, the engine control unit 11 reads and reads the throttle opening characteristic of the normal mode stored in the storage unit 52. The engine 11 is controlled based on the throttle opening characteristic.
- the plus sport mode will be described later in detail.
- the notification unit 60 includes a display unit 61 such as a monitor that performs notification by image output, and a speaker 62 that performs notification by audio output.
- the display unit 61 displays the state of the engine control unit 53 in the plus sport mode.
- State 0 is an initial state at the time of ignition ON of vehicle 1 and at the end of the plus sport mode in state 4, and engine control unit 53 includes battery storage amount gauge 61 a representing the storage amount of battery 21, motor A motor state gauge 61b representing the state (whether the engine 11 is being assisted or charged) is displayed on the display unit 61.
- the gauges 61a and 61b are always displayed during the state 0 to the state 4.
- the engine control unit 53 shifts from the state 0 to the state 1 when all the following conditions 1 are satisfied.
- State 1 is a unit normal state in which each unit of the internal combustion engine control system A is normal.
- the engine control unit 53 shifts from the state 1 to the state 2 when all the following conditions 2 are satisfied.
- the storage amount of the battery 21 is equal to or greater than a predetermined storage amount (for example, a storage amount sufficient to supply power to other devices of the vehicle 1 while supplying power to the motor 12 to generate assist torque).
- the steering angle is equal to or less than a first predetermined steering angle (for example, a steering angle that can be generated by changing lanes).
- the gear ratio of the transmission 13 is equal to or less than a predetermined gear ratio (for example, a boundary value between the low speed region and the medium speed region). When the transmission 13 is a mission, for example, there are 2 to 6 gear stages.
- the vehicle speed is equal to or higher than a predetermined vehicle speed (for example, a value at the boundary between the low speed region and the medium speed region).
- State 2 is a precondition OK state that satisfies the preconditions for executing the plus sport mode, and the engine control unit 53 causes the display unit 61 to illuminate and display the READY mark 61c and the plus sport mark 61d (FIG. 6). (See (b)). The engine control unit 53 shifts from the state 2 to the state 1 when any one of the following conditions 3 is satisfied (that is, when the condition 2 is no longer satisfied).
- the amount of electricity stored in the battery 21 is less than the predetermined amount of electricity stored (for example, the amount of electricity stored enough to supply power to other devices of the vehicle 1 while supplying power to the motor 12 to generate assist torque). is there.
- the steering angle exceeds the first predetermined steering angle (for example, a steering angle that can be generated by a lane change).
- the gear ratio of the transmission 13 exceeds the predetermined gear ratio (for example, the boundary value between the low speed region and the medium speed region).
- the gear stage is other than 2-6.
- the vehicle speed is less than the predetermined vehicle speed (for example, the value at the boundary between the low speed region and the medium speed region).
- the engine control unit 53 shifts from the state 2 to the state 3 when the following condition 4 is satisfied.
- State 3 is a standby state waiting for the transition to the plus sport mode, and the engine control unit 53 causes the READY mark to be lit on the display unit 61 and the plus sport mark to blink on the display unit 61 ( (Refer FIG.6 (c)).
- the engine control unit 53 shifts from the state 3 to the state 2 when any one of the following conditions 5 is satisfied.
- a standby time for example, a predetermined time of 10 seconds or less
- a clutch (not shown) provided between the transmission 13 and the front wheel drive shaft is in a non-engaged state.
- the brake pedal switch is ON.
- the drive wheels W FL and W FR are in a skid state.
- the drive wheels W FL, average value of the wheel speeds of the W FR is larger than a predetermined value than the average value of the wheel speeds of the driven wheels W RL, W RR (i.e., the drive wheels W FL, the wheel speed of the W FR Too much).
- -One of the driven wheels WRL , WRR is in a slip state.
- the engine control unit 53 can determine the skid state and the slip state based on the wheel speeds detected by the wheel speed sensors 37 FL , 37 FR , 37 RL , and 37 RR .
- the determination threshold of a traction control system (TCS) that prevents wheel slipping during acceleration or the like is preferably used for determining the skid state and the slip state.
- the engine control unit 53 shifts from the state 3 to the state 1 when any one of the following conditions 6 is satisfied.
- the amount of electricity stored in the battery 21 is less than the predetermined amount of electricity stored (for example, the amount of electricity stored enough to supply power to other devices of the vehicle 1 while supplying power to the motor 12 to generate assist torque). is there.
- the steering angle exceeds the first predetermined steering angle.
- the gear ratio of the transmission 13 exceeds the predetermined gear ratio (for example, the boundary value between the low speed region and the medium speed region).
- the gear stage is other than 2-6.
- the vehicle speed is less than a predetermined vehicle speed (for example, a value at the boundary between the low speed region and the medium speed region). -The switch 44 is pressed again, and the flag of the switch 44 is 0.
- the engine control unit 53 switches to the plus sport mode even if the accelerator pedal operation amount increases after the plus sport mode is selected by operating the switch 44. Prohibit changes. Further, when the steering angle exceeds the first predetermined steering angle, the engine control unit 53 changes to the plus sport mode even if the accelerator pedal operation amount increases after the plus sport mode is selected by operating the switch 44. Is prohibited.
- the engine control unit 53 changes the display content on the display unit 61 from FIG. 6 (c) to FIG. 6 (a). That is, the engine control unit 53 notifies the driver that the change to the plus sport mode is prohibited by turning off the READY mark 61c.
- the accelerator pedal operation amount has increased by a first predetermined operation amount (for example, a first predetermined value% with respect to the total operation amount that can be operated in 100 milliseconds).
- the state 4 is an operating state in which the engine 11 control is performed in the plus sport mode, and the engine control unit 53 turns off the READY mark shown on the display unit 61 and blinks the plus sport mark on the display unit 61. (See FIG. 6D).
- the engine control unit 53 shifts from the state 4 to the state 0 when any one of the following conditions 8 is satisfied.
- the switch 44 is pressed again, and the flag of the switch 44 is 0.
- a clutch (not shown) provided between the transmission 13 and the front wheel drive shaft is in a non-engaged state.
- the accelerator pedal operation amount has decreased by a second predetermined operation amount (for example, a second predetermined value% relative to the total operation amount that can be operated in 100 milliseconds).
- the accelerator pedal operation amount is equal to or less than the third predetermined operation amount.
- the second predetermined operation amount (that is, the second predetermined value%) is set to be larger than the first predetermined operation amount (that is, the first predetermined value%).
- the brake pedal switch is ON.
- the drive wheels W FL and W FR are in a skid state.
- the steering angle exceeds the second predetermined steering angle (second predetermined steering angle> first predetermined steering angle).
- second predetermined steering angle > first predetermined steering angle.
- the engine control unit 53 changes the throttle opening characteristic to the one before the change. Further, the engine control unit 53 changes the throttle opening characteristic to that before the change when there is an operation in which the accelerator pedal operation amount decreases after the throttle opening characteristic is changed to the plus sport mode. In addition, when the brake pedal operation is detected after changing the throttle opening characteristic to the plus sport mode, the engine control unit 53 changes the throttle opening characteristic to that before the change.
- a first operation example of the internal combustion engine control system A will be described with reference to FIG.
- the vehicle 1 is traveling in the normal mode, and when the vehicle speed becomes equal to or higher than the predetermined vehicle speed VP TH at the time t 1 , a precondition for executing the plus sport mode is established, and the engine control unit 53 sets the precondition flag Is set to “1”, and the state 2 described above is obtained.
- the engine control unit 53 activates the wait timer for counting the standby time.
- the waiting time elapses, by the driver depresses the accelerator pedal AP, the first predetermined operation amount or more of an increase .DELTA.AP 1 occurs accelerator pedal AP, the engine control unit 53 controls the engine 11 and the motor 12 by changing the throttle opening characteristic from the normal mode to the plus sport mode. Thereby, the throttle opening of the engine 11 increases and the assist torque by the motor 12 also increases. As the throttle opening of the engine 11 increases, the engine rotation speed increases, and the vehicle 1 accelerates in combination with the increase in assist torque by the motor 12.
- time t 4 the engine control unit 53, operation time (e.g., a value of between a few to a few tens of seconds) actuates the actuating timer for counting.
- operation time e.g., a value of between a few to a few tens of seconds
- the engine control unit 53 the mode before the change from the positive sport mode (here, normal mode) throttle opening degree characteristic change engine 11 and motor 12 is controlled.
- Time t 11 to time t 12 is a period in which the throttle opening of the engine 11 and the assist torque by the motor 12 decrease due to the change of the throttle opening characteristic.
- the driver reduces the depression amount of the accelerator pedal AP by more than a second predetermined operation amount— ⁇ AP 2 .
- the controller 53 controls the engine 11 and the motor 12 by changing the throttle opening characteristic from the plus sport mode to the mode before change (here, the normal mode). From time t 9 to time t 10 is a period in which the throttle opening of the engine 11 and the assist torque by the motor 12 decrease due to the change of the throttle opening characteristic.
- the internal combustion engine control system A changes the throttle opening characteristic to the plus sport mode on condition that the accelerator pedal operation amount increases after the plus sport mode is selected by the operation of the switch 44, the switch 44 Until the driver depresses the accelerator pedal AP after operating the, the change to the plus sport mode is awaited.
- the driver switch 44 The driver's intention to accelerate and the change of the throttle opening characteristic can be suitably linked while preventing the acceleration due to the erroneous operation.
- the internal combustion engine control system A when the switch 44 is operated again after changing the throttle opening characteristic to the plus sport mode, the internal combustion engine control system A according to the embodiment of the present invention changes the accelerator opening after changing the throttle opening characteristic to the plus sport mode. If there is an operation that decreases the pedal operation amount, if the brake pedal operation is detected after changing the throttle opening characteristic to the plus sport mode, the throttle opening characteristic is changed to the one before the change.
- the sport mode is preferably terminated, and the driver's intention to accelerate and the change of the throttle opening characteristic can be suitably linked.
- the internal combustion engine control system A when the storage amount of the battery 21 is less than the predetermined storage amount, when the steering angle exceeds the first predetermined steering angle, or the like, Even if the accelerator pedal operation amount increases after the selection of the plus sport mode by operation, the change to the plus sport mode is prohibited, so it is possible to prevent the change to the plus sport mode in a situation unsuitable for the plus sport mode. .
- the internal combustion engine control system A since the internal combustion engine control system A according to the embodiment of the present invention displays the standby state in which the plus sport mode is selected and the operating state in the plus sport mode on the display unit 61, the situation of the vehicle 1 is displayed. The driver can be suitably notified.
- the internal combustion engine control system A displays the fact on the display unit 61, so that the driving due to the inability to shift to the plus sports mode. Can prevent a person from feeling uncomfortable.
- the activation timer can be omitted.
- a vehicle speed detecting unit instead of the vehicle speed sensor 33, wheel speed sensors 37 FL, 37 FR, 37 RL , 37 RR and the wheel speed sensors 37 FL, 37 FR, 37 RL , wheel speed detected by the 37 RR And a vehicle speed calculation unit in the ECU 50 that calculates the vehicle speed based on the above.
- the steering angle detection unit may include a steering angle sensor that detects the steering angles of the drive wheels WFL and WFR instead of the steering angle sensor.
- the engine control unit 52 when the ON signal of the switch 44 continues for a first predetermined time or longer (for example, a value between several tens to 100 milliseconds), the engine control unit 52 is configured to reset the flag so that the handle H Even if the switch 44 is erroneously operated during the steering operation, the transition from the state 2 to the state 3 can be prevented. If the output of the ON signal of the switch 44 continues for a second predetermined time (for example, a value between 1 and several seconds) or more, the engine control unit 52 determines that the switch 44 is stuck. Then, the change to the plus sport mode may be prohibited.
- a first predetermined time or longer for example, a value between several tens to 100 milliseconds
- a Internal combustion engine control system 1 Vehicle 11 Engine (internal combustion engine) 12 Motor 21 Battery 31 Accelerator pedal operation amount sensor (Accelerator pedal operation amount detector) 32 Brake pedal switch (Brake pedal operation detector) 33 Vehicle speed sensor (vehicle speed detector) 34 Steering angle sensor (steering angle detector) 35 Voltage sensor (Battery charge detection unit) 36 Current sensor (battery charge detection unit) 40 operation unit 44 switch 50 ECU 51 Battery charge amount calculation unit (battery charge amount detection unit) 52 storage unit 53 engine control unit (control unit) 60 Notification unit 61 Display unit
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Abstract
Description
本発明の実施形態に係る車両1は、内燃機関制御システムAの構成として、アクセルペダル操作量センサ31と、ブレーキペダルスイッチ32と、車速センサ33と、操舵角センサ34と、バッテリセンサ(電圧センサ)35と、バッテリセンサ(電流センサ)36と、車輪速センサ37(37FL,37FR,37RL,37RR)と、を備える。
本発明の実施形態に係る車両1は、内燃機関制御システムAの構成として、車室内に設けられた操作部40を備える。図2に示すように、操作部40は、運転者がスロットル開度特性に関する各モードを選択する際に押下するスイッチ41,42,43,44を備える。
本発明の実施形態に係る車両1は、内燃機関制御システムAの構成として、ECU(Electronic Control Unit)50と、通知部60と、を備える。ECU50は、例えば、CPU(Central Processing Unit)、RAM(Random Access Memory)、ROM(Read-Only Memory)、入出力回路等から構成されており、各種センサの検出結果等に基づいて、車両1の動力源であるエンジン11及びモータ12、並びに、通知部60等を制御する。
続いて、プラススポーツモードにおける内燃機関制御システムAの動作について、図5及び図6を参照して説明する。図5に示すように、プラススポーツモードに関するエンジン制御部53の状態は、状態0~状態4に区分される。
状態0は、車両1のイグニッションON時点、及び、状態4におけるプラススポーツモードの終了時点の初期状態であって、エンジン制御部53は、バッテリ21の蓄電量を表すバッテリ蓄電量ゲージ61aと、モータ状態(エンジン11をアシストしているか充電しているか)を表すモータ状態ゲージ61bと、を表示部61に表示させる。各ゲージ61a,61bは、状態0~状態4の間、常に表示される。エンジン制御部53は、以下の条件1を全て満たした場合に、状態0から状態1へ移行する。
・内燃機関制御システムAの各ユニットを自己診断し、全てのユニットが正常と診断されている。
・(プラススポーツモード終了時点、すなわち、状態4から状態0へ移行したときのみ、)所定時間(例えば、数秒)経過している。
状態1は、内燃機関制御システムAの各ユニットが正常なユニット正常状態である。エンジン制御部53は、以下の条件2の各条件を全て満たした場合に、状態1から状態2へ移行する。
・バッテリ21の蓄電量が所定蓄電量(例えば、アシストトルクを発生させるためにモータ12へ電力を供給しつつ、車両1の他の機器へ電力を供給するのに十分な蓄電量)以上である。
・操舵角が第一の所定操舵角(例えば、車線変更で発生し得る操舵角)以下である。
・トランスミッション13のギヤ比が所定ギヤ比(例えば、低速領域と中速領域との境の値)以下である。トランスミッション13がミッションである場合には、例えばギヤ段が2~6段である。
・車速が所定車速(例えば、低速領域と中速領域との境の値)以上である。
状態2は、プラススポーツモードを実行するための前提条件を満たした前提条件OK状態であって、エンジン制御部53は、READYマーク61c及びプラススポーツマーク61dを表示部61に点灯表示させる(図6(b)参照)。エンジン制御部53は、以下の条件3の各条件のいずれかを満たした場合(すなわち、条件2を満たさなくなった場合)に、状態2から状態1へ移行する。
・バッテリ21の蓄電量が前記所定蓄電量(例えば、アシストトルクを発生させるためにモータ12へ電力を供給しつつ、車両1の他の機器へ電力を供給するのに十分な蓄電量)未満である。
・操舵角が前記第一の所定操舵角(例えば、車線変更で発生し得る操舵角)を超えている。
・トランスミッション13のギヤ比が前記所定ギヤ比(例えば、低速領域と中速領域との境の値)を超えている。トランスミッション13がミッションである場合には、例えばギヤ段が2~6段以外である。
・車速が前記所定車速(例えば、低速領域と中速領域との境の値)未満である。
また、操舵角が第一の所定操舵角を超えている場合には状態2から状態1へ戻るようにすることで、タイトなワインディング走行時においてプラススポーツモードが実行されることを好適に防ぐことができる。
・スイッチ44が押下され、スイッチ44のフラグが1である。
ここで、エンジン制御部53は、スイッチ44のフラグを有しており、通常はフラグを0に設定しており、スイッチ44が押下されてON信号が出力されるとフラグを1に設定し直し、スイッチ44が再度押下されてON信号が出力されるとフラグを0に設定し直す。また、エンジン制御部53は、フラグが1に設定された状態において他のスイッチ41~43が押下された場合にも、フラグを0に設定し直す構成であってもよい。
状態3は、プラススポーツモードへの移行を待機している待機状態であって、エンジン制御部53は、READYマークを表示部61に点灯表示させるとともにプラススポーツマークを表示部61に点滅表示させる(図6(c)参照)。エンジン制御部53は、以下の条件5のいずれかを満たした場合に、状態3から状態2へ移行する。
・待機時間(例えば、10秒以下の所定時間)が経過している。
・トランスミッション13と前輪駆動軸との間に設けられたクラッチ(図示せず)が非締結状態である。
・ブレーキペダルスイッチがONである。
・駆動輪WFL,WFRがスキッド状態である。詳細には、駆動輪WFL,WFRの車輪速の平均値が従動輪WRL,WRRの車輪速の平均値よりも所定値以上大きい(すなわち、駆動輪WFL,WFRの車輪速が出すぎている)。
・従動輪WRL,WRRの一方がスリップ状態である。詳細には、左右の従動輪WRL,WRRの車輪速の差が所定値以上である(すなわち、左右の従動輪WRL,WRRのどちらかがスリップして車輪速が出すぎている)。
ここで、エンジン制御部53は、各車輪速センサ37FL,37FR,37RL,37RRによって検出された車輪速に基づいて、スキッド状態及びスリップ状態を判定することができる。かかるスキッド状態及びスリップ状態の判定は、加速時等の車輪空転を防ぐトラクションコントロールシステム(TCS)の判定閾値が好適に用いられる。
・バッテリ21の蓄電量が前記所定蓄電量(例えば、アシストトルクを発生させるためにモータ12へ電力を供給しつつ、車両1の他の機器へ電力を供給するのに十分な蓄電量)未満である。
・操舵角が前記第一の所定操舵角を超えている。
・トランスミッション13のギヤ比が前記所定ギヤ比(例えば、低速領域と中速領域との境の値)を超えている。トランスミッション13がミッションである場合には、例えばギヤ段が2~6段以外である。
・車速が所定車速(例えば、低速領域と中速領域との境の値)未満である。
・スイッチ44が再度押下され、スイッチ44のフラグが0である。
(条件7)
・アクセルペダル操作量が第一の所定操作量(例えば、100m秒間に、操作可能な全操作量に対する第一の所定値%)以上増加している。
状態4は、プラススポーツモードによるエンジン11制御が行われている作動中状態であって、エンジン制御部53は、示すREADYマークを表示部61に消灯させるとともにプラススポーツマークを表示部61に点滅表示させる(図6(d)参照)。エンジン制御部53は、以下の条件8のいずれかを満たした場合に、状態4から状態0へ移行する。
・スイッチ44が再度押下され、スイッチ44のフラグが0である。
・トランスミッション13と前輪駆動軸との間に設けられたクラッチ(図示せず)が非締結状態である。
・アクセルペダル操作量が第二の所定操作量(例えば、100m秒間に、操作可能な全操作量に対する第二の所定値%)以上減少している。又は、アクセルペダル操作量が第三の所定操作量以下となっている。なお、第二の所定操作量(すなわち、第二の所定値%)は、前記した第一の所定操作量(すなわち、第一の所定値%)よりも大きく設定されている。
・ブレーキペダルスイッチがONである。
・駆動輪WFL,WFRがスキッド状態である。
・従動輪WRL,WRRの一方がスリップ状態である。
・操舵角が第二の所定操舵角を超えている(第二の所定操舵角>第一の所定操舵角)。
ここで、第二の所定操舵角は、車線変更を許可する程度の値に設定することが望ましく、車速が大きいほど大きくなるように設定することができる。
続いて、本発明の実施形態に係る内燃機関制御システムAの第一の動作例について、図7を参照して説明する。車両1は、例えばノーマルモードで走行しており、時刻t1において車速が所定車速VPTH以上となると、プラススポーツモードを実行するための前提条件が成立し、エンジン制御部53は、前提条件フラグを「1」に設定し、前記した状態2となる。
続いて、本発明の実施形態に係る内燃機関制御システムAの第二の動作例について、第一の動作例との相違点を中心に、図8を参照して説明する。
続いて、本発明の実施形態に係る内燃機関制御システムAの第三の動作例について、第一の動作例との相違点を中心に、図9を参照して説明する。
1 車両
11 エンジン(内燃機関)
12 モータ
21 バッテリ
31 アクセルペダル操作量センサ(アクセルペダル操作量検出部)
32 ブレーキペダルスイッチ(ブレーキペダル操作検出部)
33 車速センサ(車速検出部)
34 操舵角センサ(舵角検出部)
35 電圧センサ(バッテリ蓄電量検出部)
36 電流センサ(バッテリ蓄電量検出部)
40 操作部
44 スイッチ
50 ECU
51 バッテリ蓄電量算出部(バッテリ蓄電量検出部)
52 記憶部
53 エンジン制御部(制御部)
60 通知部
61 表示部
Claims (10)
- 車両の内燃機関を制御する内燃機関制御システムであって、
前記車両のアクセルペダル操作量を検出するアクセルペダル操作量検出部と、
前記アクセルペダル操作量に対する前記内燃機関の複数の異なるスロットル開度特性が記憶される記憶部と、
操作に応じて前記スロットル開度特性を選択する操作部と、
選択された前記スロットル開度特性と、検出された前記アクセルペダル操作量と、に基づいて前記内燃機関の前記スロットル開度を制御する制御部と、
を備え、
前記制御部は、前記操作部の操作による前記スロットル開度特性の選択後に、前記アクセルペダル操作量の増加を条件に前記スロットル開度特性を選択されたものに変更する
ことを特徴とする内燃機関制御システム。 - 前記操作部によって選択される前記スロットル開度特性は、変更前の前記スロットル開度特性よりも、前記アクセルペダル操作量の増加に伴う前記スロットル開度の増加が大きく設定されている
ことを特徴とする請求項1に記載の内燃機関制御システム。 - 前記制御部は、前記スロットル開度特性を選択されたものに変更した後に前記操作部が再操作された場合に、前記スロットル開度特性を変更前のものに変更する
ことを特徴とする請求項1に記載の内燃機関制御システム。 - 前記制御部は、前記スロットル開度特性を選択されたものに変更した後に前記アクセルペダル操作量が減少する操作があった場合に、前記スロットル開度特性を変更前のものに変更する
ことを特徴とする請求項1に記載の内燃機関制御システム。 - 前記車両のブレーキペダル操作を検出するブレーキペダル操作検出部を備え、
前記制御部は、前記スロットル開度特性を選択されたものに変更した後に前記ブレーキペダル操作が検出された場合に、前記スロットル開度特性を変更前のものに変更する
ことを特徴とする請求項1に記載の内燃機関制御システム。 - 車両の車速を検出する車速検出部を備え、
前記制御部は、前記車速が所定車速未満である場合には、前記操作部の操作による前記スロットル開度特性の選択後に、前記アクセルペダル操作量が増加しても前記スロットル開度特性の変更を禁止する
ことを特徴とする請求項1に記載の内燃機関制御システム。 - 前記車両は、
前記内燃機関とともに当該車両の動力源として機能するモータと、
前記モータに電力を供給するバッテリと、
を備えており、
前記内燃機関制御システムは、前記バッテリの蓄電量を検出するバッテリ蓄電量検出部を備え、
前記制御部は、前記バッテリの蓄電量が所定蓄電量未満である場合には、前記操作部の操作による前記スロットル開度特性の選択後に、前記アクセルペダル操作量が増加しても前記スロットル開度特性の変更を禁止する
ことを特徴とする請求項1に記載の内燃機関制御システム。 - 前記車両の舵角を検出する舵角検出部を備え、
前記制御部は、前記舵角が所定操舵角を超える場合には、前記操作部の操作による前記スロットル開度特性の選択後に、前記アクセルペダル操作量が増加しても前記スロットル開度特性の変更を禁止する
ことを特徴とする請求項1に記載の内燃機関制御システム。 - 前記制御部からの出力に基づいて、前記スロットル開度特性が選択された待機状態と、選択された前記スロットル開度特性に変更された作動中状態と、を通知する通知部を備える
ことを特徴とする請求項1から請求項8のいずれか一項に記載の内燃機関制御システム。 - 前記スロットル開度特性が選択された待機状態と、選択された前記スロットル開度特性に変更された作動中状態と、を通知する通知部を備え、
前記制御部は、前記スロットル開度特性の変更を禁止した場合に、その旨を前記通知部へ出力する
ことを特徴とする請求項7又は請求項8に記載の内燃機関制御システム。
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US14/425,468 US10138818B2 (en) | 2012-09-04 | 2013-09-03 | Internal combustion engine control system |
JP2014534365A JP5848828B2 (ja) | 2012-09-04 | 2013-09-03 | 内燃機関制御システム |
CN201380042242.0A CN104520556A (zh) | 2012-09-04 | 2013-09-03 | 内燃机控制系统 |
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WO2022176343A1 (ja) * | 2021-02-16 | 2022-08-25 | 本田技研工業株式会社 | 鞍乗り型車両 |
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