JP5048621B2 - Control device for vehicle engine - Google Patents

Description

  The present invention relates to a motor that opens and closes a throttle valve of an engine, an accelerator sensor that detects an acceleration / deceleration operation amount by a driver of an accelerator grip supported by a steering handle, and outputs a signal corresponding thereto, and the accelerator The present invention relates to an improvement in a control device for a vehicle engine, comprising an electronic control unit for controlling the operation of the motor so as to open and close a throttle valve in accordance with an output signal of a sensor.

Conventionally, in such a vehicular engine control device, when the accelerator grip is further operated in the deceleration direction from the normal idle position, a cancel switch is provided which operates by the operation force, and the operation signal of the cancel switch is received. An electronic control unit in which the operation of an auxiliary machine such as an auto cruise device is canceled is already known as disclosed in Patent Document 1 below.
JP 2007-113416 A

  In the conventional vehicle engine control device, since a switch for controlling the operation of the auxiliary machine is specially provided, the number of parts increases, the structure becomes complicated, and the operation signal of the switch is sent to the electronic control unit. It is necessary to add an input port for input.

  The present invention has been made in view of such circumstances, so that the accelerator grip can be further rotated in the deceleration direction from the normal idle position, and the output signal of the accelerator sensor accompanying the rotation is used to compensate. An object of the present invention is to provide a control device for a vehicle engine with a simple structure that can control the operation of the machine.

  In order to achieve the above object, the present invention detects the acceleration / deceleration operation amount by the driver of the accelerator grip supported by the motor and the steering handle for opening / closing the throttle valve of the engine, and provides a signal corresponding thereto. A vehicle engine control device comprising an accelerator sensor for output and an electronic control unit for controlling the operation of the motor to open and close a throttle valve in response to an output signal of the accelerator sensor. The accelerator sensor is attached to the sensor holder, a sensor input shaft connected to the accelerator grip via an interlocking mechanism is connected to the input portion of the accelerator sensor, and the driver of the accelerator grip is connected to the rotation path of the sensor input shaft. A reference position corresponding to the non-operating state and an acceleration operation by the accelerator grip driver from this reference position. Throttle control area that enables rotation of the sensor input shaft in the throttle valve opening direction, and rotation of the sensor input shaft in the throttle valve closing direction accompanying deceleration operation by the driver of the accelerator grip from the reference position And a reference positioning mechanism for biasing the sensor input shaft toward the reference position, and connecting the sensor input shaft from the reference position to the auxiliary control region side. The first feature is that an auxiliary machine that is operated via an electronic control unit is provided by the output of an accelerator sensor that accompanies the rotation when it rotates. The auxiliary machine corresponds to the auto-cruise device 12 in the embodiment of the present invention described later.

  According to the present invention, in addition to the first feature, the reference positioning mechanism is connected between a free rotating member that is rotatably supported by the sensor input shaft, and between the sensor input shaft and the free rotating member, An opening spring for urging the sensor input shaft in the opening direction of the throttle valve with respect to the free rotating member, and a closing spring connected between the sensor holder and the free rotating member to urge the free rotating member in the closing direction of the throttle valve And a first stopper means provided between the sensor input shaft and the free rotating member, for preventing rotation of the sensor input shaft relative to the free rotating member against the biasing force of the opening spring, the sensor holder and the free rotating member And a second stopper means for preventing the rotation of the free rotation member relative to the sensor holder against the urging force of the closing spring, and the operation of the first and second stopper means. The sensor input shaft and the second, characterized in that it is positioned in the reference position by.

  Furthermore, in the present invention, in addition to the first feature, the reference positioning mechanism is connected between a free rotation member that is rotatably supported by the sensor input shaft, and between the sensor input shaft and the free rotation member, A closing spring for urging the sensor input shaft in the closing direction of the throttle valve with respect to the free rotating member, and an opening spring connected between the sensor holder and the free rotating member to urge the free rotating member in the opening direction of the throttle valve And a third stopper means provided between the sensor input shaft and the free rotating member for preventing rotation of the sensor input shaft relative to the free rotating member against the biasing force of the closing spring, the sensor holder and the free rotating member A fourth stopper means provided between the first and second stopper means for preventing the rotation of the free rotating member relative to the sensor holder against the biasing force of the opening spring; Said sensor input shaft by movement is positioned at the reference position and the third feature.

  Furthermore, the present invention is characterized in that, in addition to the second or third feature, the set load of the opening spring is set larger than the set load of the closing spring.

  According to the first feature of the present invention, the signal output from the accelerator sensor accompanying the rotation from the reference position of the sensor input shaft to the auxiliary machine control region side is recognized as an auxiliary machine control signal by the electronic control unit. Auxiliary equipment can be controlled, so there is no need to install a special auxiliary switch, and there is no need to add an input port to the electronic control unit, thus simplifying the structure and reducing costs. be able to.

  In addition, since it is not necessary to provide a special auxiliary switch around the accelerator grip, the steering handle can be reduced in weight and size, and the appearance can be improved.

  According to the second feature of the present invention, in the throttle control region of the sensor input shaft, the free rotating member rotates together with the sensor input shaft in conjunction with the acceleration / deceleration operation of the accelerator grip, and the relative rotation therebetween is not performed. Since it does not occur, there is little rotational friction, the sensor input shaft can be rotated smoothly, and therefore the acceleration grip addition and deceleration operations can be made light. Further, since the set loads of the closing spring and the opening spring can be set independently, the acceleration operation load and the deceleration operation load from the reference position of the accelerator grip can be arbitrarily set.

  According to the third feature of the present invention, when the sensor input shaft is rotated from the reference position in the opening direction of the throttle valve, the free rotation member is fixed by the second stopper means and the sensor input shaft is Since this causes rotation, friction is generated between the sensor input shaft and the free rotating member, and this friction contributes to compensating for the insufficient hysteresis between the acceleration grip operating force and the deceleration operating force. , The operation feeling of the accelerator grip can be improved. Also in this case, since the set loads of the closing spring and the opening spring can be set independently, the acceleration operation load and the deceleration operation load from the reference position of the accelerator grip can be arbitrarily set.

  According to the fourth aspect of the present invention, normally, when the driver returns the accelerator grip to the reference position side in the throttle control region, the reference position is inadvertently set by receiving a large set load of the opening spring. It is possible to prevent erroneous operation that causes the auxiliary machine to rotate beyond the auxiliary machine control area.

  Embodiments of the present invention will be described below on the basis of preferred embodiments of the present invention shown in the accompanying drawings.

  FIG. 1 is a cross-sectional view of a throttle valve opening / closing drive device in a control device for a vehicle engine according to a first embodiment of the present invention, FIG. 2 is an electric circuit diagram for controlling the operation of a motor and the like in FIG. 1, and FIG. FIG. 4 is a sectional view taken along line 4-4 in FIG. 3, FIG. 5 is a load characteristic diagram of the opening spring and the closing spring in FIG. 4, and FIG. 6 is an accelerator in FIG. FIG. 7 is a diagram corresponding to FIG. 3, showing a second embodiment of the present invention.

  First, the description starts with the description of the first embodiment of the present invention shown in FIGS. In FIG. 1, a throttle body 1 attached to an intake port portion of a motorcycle engine has intake passages 2 (two in the illustrated example) corresponding to the number of cylinders of the engine, and opens and closes each intake passage 2. A common valve shaft 3 a of the butterfly throttle valve 3 is rotatably supported by the throttle body 1. A gear case 4 is integrally connected to the right end portion of the throttle body 1. A motor 5 is connected to the gear case 4, and a reduction gear device 6 that reduces the rotation of the output shaft of the motor 5 and transmits it to the valve shaft 3 a. Is contained and supported. Thus, the throttle valve 3 can be opened and closed by rotating the output shaft of the motor 5 forward and backward.

  The gear case 4 has an open right end surface, and a cover 7 is bolted to the gear case 4 so as to close the open surface. A throttle sensor 8 for detecting the opening degree of the throttle valve 3 is attached to the cover 7 via the valve shaft 3a.

  In FIG. 2, the output signals of the throttle sensor 8, the accelerator sensor 19 and the auto-cruise selection switch 11 are input to an electronic control unit 10 installed at a proper position on the motorcycle body, and the electronic control unit 10 The operation of the motor 5 and the auto cruise device 12 is controlled according to the output signal.

  3 and 4, a sensor holder 17 is fixed to the bracket 16 fixed to the vehicle body 15 of the motorcycle with bolts 18. An accelerator sensor 19 is attached to the sensor holder 17 with a screw 20, and an input portion of the accelerator sensor 19, that is, a sensor input shaft 21 connected to the rotor 19 a is connected to the sensor holder 17 via a pair of left and right bearings 22 and 22. It is supported rotatably. The sensor input shaft 21 and an accelerator grip 26 rotatably provided at the right end portion of the steering handle 25 of the motorcycle are connected to each other via an interlocking mechanism 27. The interlock mechanism 27 includes a drive drum 28 fixed to the inner end of the accelerator grip 26, a driven drum 29 fixed to the sensor input shaft 21, and an acceleration Bowden cable for connecting the drive and driven drums 28 and 29 to each other. 30 and a deceleration Bowden cable 31. The acceleration and deceleration Bowden cables 30, 31 are each composed of inner cables 30a, 31a and outer cables 30b, 31b for guiding the movement of the inner cables 30a, 31a. One end portions of the accelerating and decelerating inner cables 30a, 31a are connected to the driving drum 28 from opposite directions, and the other end portions thereof are connected to the driven drum 29 from opposite directions. One end portions of the deceleration outer cables 30 b and 31 b are fixed to the steering handle 25, and the other end portions thereof are fixed to the outer support member 32 fixed to the sensor holder 17.

  A free rotating member 33 is supported on the sensor input shaft 21 so as to be relatively rotatable adjacent to the driven drum 29. Connected between the driven drum 29 and the free rotating member 33 is an opening spring 35 made of a torsion coil spring that biases the driven drum 29 in the opening direction of the throttle valve 3 with respect to the free rotating member 33. First stopper means 37 is provided to prevent rotation of the driven drum 29 relative to the free rotating member 33 by a biasing force of the opening spring 35 at a predetermined position. The first stopper means 37 includes a stopper pin 39 protruding from one side surface of the free rotating member 33 and a stopper piece protruding radially from the driven drum 29 and contacting the stopper pin 39 at the predetermined position of the driven drum 29. 40.

  Further, between the sensor holder 17 and the free rotating member 33, a closing spring 36 made of a torsion coil spring that biases the free rotating member 33 in the closing direction of the throttle valve 3 with respect to the sensor holder 17 is connected. In addition, second stopper means 38 is provided for preventing the rotation of the free rotation member 33 relative to the sensor holder 17 by the biasing force of the closing spring 36 at a predetermined position. The second stopper means 38 includes an idle stopper bolt 41 that is adjustably provided on one side surface of the sensor holder 17, and projects radially from the free rotating member 33 to the idle stopper bolt 41 at the predetermined position of the free rotating member 33. It is comprised with the stopper piece 42 to contact | abut.

  One end portion 35 a of the opening spring 35 is locked to the stopper piece 40 of the driven drum 29, and the other end portion 35 b is locked to a locking hole 45 provided in the free rotation member 33. One end portion 36 a of the closing spring 36 is locked to the locking hole 46 of the free rotating member 33, and the other end portion 36 b is locked to a locking pin 48 fixed to the sensor holder 17.

  Thus, the sensor input shaft 21 is positioned at the reference position P (see FIGS. 5 and 6) by the simultaneous operation of the first and second stopper means 37, 38. Therefore, the sensor input shaft 21 is 5, the set load F2 of the opening spring 35 and the set load F1 of the closing spring 36 are biased to the reference position P, and the setting load F2 of the opening spring 35 is the closing spring. It is set to be larger than 36 set load F1.

  In the above, the reference rotation mechanism 47 for spring-biasing the sensor input shaft 21 to the reference position P is constituted by the free rotation member 33, the opening spring 35, the closing spring 36, the first stopper means 37 and the second stopper means 38. The

  As shown in FIGS. 3 and 6, the rotation path of the sensor input shaft 21 from the reference position P to the throttle valve opening direction accompanying the acceleration operation by the driver of the accelerator grip 26 is included in the rotation path of the sensor input shaft 21. A throttle control region A that enables the rotation of the sensor input shaft 21 in the throttle valve closing direction accompanying the deceleration operation by the driver of the accelerator grip 26 from the reference position P. Provided. The limit of the throttle control region A on the side opposite to the reference position P is defined by the stopper piece 42 of the free rotating member 33 coming into contact with a fully open stopper bolt 43 provided on the sensor holder 17 so that the position can be adjusted. The limit of the machine control region B opposite to the reference position P is defined by the stopper piece 40 of the driven drum 29 coming into contact with an auxiliary stopper bolt 44 provided on the free rotating member 33 so that the position of the stopper piece 40 can be adjusted.

  FIG. 6 shows the output (voltage) status of the accelerator sensor 19 as the sensor input shaft 21 rotates. Thus, at the reference position P of the sensor input shaft 21, the accelerator sensor 19 generates an output V2. Based on the output V2, the electronic control unit 10 causes the motor to maintain the throttle valve 3 at the idle opening. Control the operation of

  When the driver rotates the accelerator grip 26 in the acceleration direction, the sensor input shaft 21 can be rotated from the reference position P in the opening direction of the throttle valve 3 via the interlocking mechanism 27. The rotation of the sensor input shaft 21 is detected by the accelerator sensor 19, and an output signal corresponding to the rotation is input from the accelerator sensor 19 to the electronic control unit 10. Therefore, the electronic control unit 10 controls the operation of the motor 5 so that the output signal of the throttle sensor 8 corresponds to the output signal of the accelerator sensor 19, thereby opening the throttle valve 3 according to the operating angle of the accelerator grip 26. That is, it can be controlled to an opening desired by the driver. Meanwhile, the driven drum 29 connected to the sensor input shaft 21 opens the throttle valve 3 in the direction of opening of the free rotation member 33 against the urging force of the closing spring 36 through the stopper piece 40 and the stopper pin 39 that are in contact with each other. The rotation limit is determined by the stopper piece 42 of the free rotation member 33 coming into contact with the fully open stopper bolt 43.

  Now, it is assumed that the electronic control unit 10 activates the auto-cruise device 12 in response to the ON signal of the auto-cruise selection switch 11 and the vehicle is traveling at a constant speed. In this driving state, since the driver loosens the gripping force on the accelerator grip 26, the sensor input shaft 21 is held at the reference position P by the action of the reference positioning mechanism 47. In such a case, when the driver strongly returns the accelerator grip 26 to the deceleration side in order to stop the operation of the auto cruise device 12, the sensor input shaft 21 is moved from the reference position P to the auxiliary machine control region B via the interlocking mechanism 27. Since the output of the accelerator sensor 19 decreases to V2 or less due to the rotation, the electronic control unit 10 that has received the output is when the output of the accelerator sensor 19 becomes less than a predetermined value V1 lower than V2. , This is regarded as a cancel signal, and the operation of the auto-cruise device 12 is stopped.

  At this time, since the free rotating member 33 is prevented from rotating toward the auxiliary control region B by bringing the stopper piece 42 into contact with the idle stopper bolt 41, the driven drum 29 together with the sensor input shaft 21 opens the spring 35. It rotates against the urging force toward the auxiliary machine control region B, and its rotation limit is determined by the stopper piece 40 coming into contact with the auxiliary stopper bolt 44 of the free rotating member 33.

  In this way, the signal output from the accelerator sensor 19 accompanying the rotation of the sensor input shaft 21 from the reference position P toward the auxiliary machine control region B is recognized as a cancel signal by the electronic control unit 10, and thereby the auto cruise device 12. Therefore, a special cancel switch is not required, and there is no need to add an input port to the electronic control unit 10, thereby simplifying the structure and reducing the cost.

  In addition, since it is not necessary to provide a special auxiliary switch around the accelerator grip 26, the steering handle can be reduced in weight and size, and the appearance can be improved.

  Further, since the set loads of the opening spring 35 and the closing spring 36 for urging the accelerator grip 26 and the sensor input shaft 21 to the reference position P can be set independently, the reference position P of the accelerator grip 26 can be set. Acceleration operation load and deceleration operation load from can be arbitrarily set. At this time, in particular, when the set load of the opening spring 35 and the closing spring 36 is set so that the set load F2 of the opening spring 35 is larger than the set load F1 of the closing spring 36, the driver usually throttles the accelerator grip 26. In the control area A, when returning to the reference position P side, by receiving a large set load F2 of the opening spring 35, an erroneous operation that inadvertently exceeds the reference position P and rotates to the auxiliary machine control area B side. Can be prevented.

  In the throttle control area A of the sensor input shaft 21, the free rotation member 33 rotates together with the sensor input shaft 21 in conjunction with the acceleration / deceleration operation of the accelerator grip 26, and no relative rotation occurs between them. The rotational friction is small and the sensor input shaft 21 can be smoothly rotated. Therefore, the acceleration / deceleration operation of the accelerator grip 26 can be simplified.

  Next, a second embodiment of the present invention shown in FIG. 7 will be described.

  In the second embodiment, the reference position determining mechanism 47 is connected between the sensor input shaft 21 and the free rotation member 33, and is connected to the free rotation member 33. Is connected between the sensor holder 17 and the free rotating member 33 and biases the free rotating member 33 in the opening direction of the throttle valve 3. A third spring provided between the opening spring 35 and the sensor input shaft 21 and the free rotating member 33, and prevents rotation of the sensor input shaft 21 relative to the free rotating member 33 at a predetermined position against the biasing force of the closing spring 36. Rotation of the free rotation member 33 relative to the sensor holder 17 against the biasing force of the opening spring 35 provided between the means 50 and the sensor holder 17 and the free rotation member 33 Is composed of a fourth stopper means 51 for preventing, so that the sensor input shaft 21 is positioned at the reference position P by operating the third and fourth stop means 50, 51.

  The third stopper means 50 includes a stopper pin 52 projecting from one side surface of the free rotating member 33 and a stopper piece 53 projecting radially from the driven drum 29 and contacting the stopper pin 52 at the predetermined position of the driven drum 29. It consists of. The fourth stopper means 51 includes an idle stopper bolt 41 that can be adjusted on one side surface of the sensor holder 17 and an idle stopper bolt 41 that protrudes in the radial direction from the free rotation member 33 at the predetermined position of the free rotation member 33. And a stopper piece 54 in contact with.

  One end portion 36 a of the closing spring 36 is locked to the stopper piece 53 of the driven drum 29, and the other end portion 36 b is locked to a locking hole 55 provided in the free rotation member 33. One end 35 a of the opening spring 35 is locked to the locking hole 57 of the free rotating member 33, and the other end 35 b is locked to a locking pin 58 fixed to the sensor holder 17.

  The limit of the throttle control area A of the sensor input shaft 21 on the side opposite to the reference position P is defined by the stopper piece 53 of the driven drum 29 coming into contact with the fully open stopper bolt 43 on the free rotating member 33. The limit of the auxiliary machine control region B on the side opposite to the reference position P is defined by the stopper piece 54 of the free rotating member 33 coming into contact with the auxiliary stopper bolt 44 provided on the sensor holder 17 so that the position can be adjusted.

  Also in the second embodiment, as in the previous embodiment, the set load of the opening spring 35 is set larger than the set load of the closing spring 36.

  Since the other configuration is the same as that of the previous embodiment, the same reference numerals are given to the portions corresponding to those of the previous embodiment in FIG.

  Thus, when the sensor input shaft 21 is rotated from the reference position P in the opening direction of the throttle valve 3, the free rotation member 33 is fixed by the fourth stopper means 51, and the sensor input shaft 21 is The stopper piece 53 of the driven drum 29 can be rotated until it comes into contact with the fully open stopper bolt 43 of the free rotating member 33. The rotation is detected by the accelerator sensor 19 as in the previous embodiment, and the detection signal is the motor signal. 5 is used to control the opening degree of the throttle valve 3.

  At this time, the sensor input shaft 21 rotates with respect to the free rotation member 33, thereby generating friction between them. The friction is between the acceleration direction operating force of the accelerator grip 26 and the deceleration direction operating force. This contributes to compensating for the insufficient hysteresis and can improve the operation feeling of the accelerator grip 26.

  The present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention. For example, when the sensor input shaft 21 rotates to the auxiliary machine control region B side and the output of the accelerator sensor 19 becomes V1 or less, the electronic control unit 10 maintains the output for a predetermined time. It can also be determined as a cancel signal for the auto cruise device 12, and this can prevent inconvenience due to momentary erroneous rotation of the sensor input shaft 21 toward the auxiliary machine control region B. Further, when the sensor input shaft 21 rotates toward the auxiliary machine control region B, the signal output from the accelerator sensor 19 can be used as an operation signal for auxiliary machines such as an engine starter and an engine brake lamp. Further, an open spring and a close spring made of a torsion coil spring can be connected to each other to form a single spring.

1 is a cross-sectional view of a throttle valve opening / closing drive device in a vehicle engine control apparatus according to a first embodiment of the present invention. The electric circuit diagram which controls the action | operation of the motor etc. in FIG. The side view of the accelerator sensor periphery part in the same control apparatus. FIG. 4 is a sectional view taken along line 4-4 of FIG. FIG. 5 is a load characteristic diagram of the opening spring and the closing spring in FIG. 4. FIG. 5 is an output characteristic diagram of the accelerator sensor in FIG. 4 with respect to rotation of the sensor input shaft. FIG. 4 is a diagram corresponding to FIG. 3 showing a second embodiment of the present invention.

Explanation of symbols

A ... Throttle control area B ... Auxiliary equipment control area P ... Reference position 3 ... Throttle valve 5 ... Motor 8 ... Throttle sensor 10 ... Electronic control Unit 12 ... Auxiliary machine (auto cruise device)
15 ... Car body 17 ... A sensor holder 19 ... Accelerator sensor 21 ... Sensor input shaft 25 ... Steering handle 26 ... Accelerator grip 27 ... Interlock mechanism 33 ... Free rotating member 35 ... Opening spring 36 ... Closing spring 37 ... First stopper means 38 ... Second stopper means 47 ... Reference positioning mechanism 50 ... Third stopper means 51 ... Fourth stopper means

Claims (4)

The motor (5) that opens and closes the throttle valve (3) of the engine and the accelerator grip (26) supported by the steering handle (25) detects the amount of acceleration / deceleration operation by the driver and outputs a corresponding signal. An accelerator sensor (19) for outputting, and an electronic control unit (10) for controlling the operation of the motor (5) to open and close the throttle valve (3) according to the output signal of the accelerator sensor (19). In a control device for a vehicle engine,
The accelerator sensor (19) is attached to a sensor holder (17) supported by the vehicle body (15), and is connected to an input portion of the accelerator sensor (19) via an interlock mechanism (27) to an accelerator grip (26). The sensor input shaft (21) is connected, and a reference position (P) corresponding to a non-operation state by the driver of the accelerator grip (26) is connected to the rotation path of the sensor input shaft (21) and the reference position (P ) To the accelerator grip (26) from the throttle control region (A) that enables rotation of the sensor input shaft (21) in the throttle valve opening direction accompanying the acceleration operation by the driver, and the reference position (P). An auxiliary machine control region (B) that enables rotation of the sensor input shaft (21) in the throttle valve closing direction accompanying the deceleration operation by the driver of the accelerator grip (26); Connected to the sensor input shaft (21) is a reference positioning mechanism (47) that springs the sensor input shaft (21) toward the reference position (P), and the sensor input shaft (21) is compensated from the reference position (P). When it rotates to the machine control area (B) side, it has the auxiliary machine (12) actuated via the electronic control unit (10) by the output of the accelerator sensor (19) accompanying it. , Control device for vehicle engine. The vehicle engine control device according to claim 1,
The reference positioning mechanism (47) is connected between a free rotating member (33) that is rotatably supported by the sensor input shaft (21), and between the sensor input shaft (21) and the free rotating member (33). , Between the open spring (35) for urging the sensor input shaft (21) with respect to the free rotating member (33) in the opening direction of the throttle valve (3), and the sensor holder (17) and the free rotating member (33) Is connected between the sensor input shaft (21) and the free rotating member (33), and is provided between the sensor input shaft (21) and the free rotating member (33). First stopper means (37) for preventing rotation of the sensor input shaft (21) relative to the free rotating member (33) against the biasing force of the opening spring (35), the sensor holder (17) and the free rotating member ( 33), And second stopper means (38) for preventing the rotation of the free rotating member (33) relative to the sensor holder (17) against the urging force of the closing spring (36), and the first and second stopper means A control device for a vehicle engine, wherein the sensor input shaft (21) is positioned at the reference position (P) by the operation of (37, 38). The vehicle engine control device according to claim 1,
The reference positioning mechanism (47) is connected between a free rotating member (33) that is rotatably supported by the sensor input shaft (21), and between the sensor input shaft (21) and the free rotating member (33). , Between the sensor holder (17) and the free rotating member (33), the closing spring (36) for urging the sensor input shaft (21) with respect to the free rotating member (33) in the closing direction of the throttle valve (3) Is connected between the sensor input shaft (21) and the free rotating member (33), and is provided between the open spring (35) for biasing the free rotating member (33) in the opening direction of the throttle valve (3), Third stopper means (50) for preventing rotation of the sensor input shaft (21) relative to the free rotating member (33) against the biasing force of the closing spring (36), the sensor holder (17) and the free rotating member ( 33), A fourth stopper means (51) for preventing rotation of the free rotating member (33) relative to the sensor holder (17) against the biasing force of the opening spring (35), and the third and fourth stopper means A control device for a vehicle engine, wherein the sensor input shaft (21) is positioned at the reference position (P) by the operation of (50, 51). The control device for a vehicle engine according to claim 2 or 3,
A control device for a vehicle engine, wherein a set load (F2) of the opening spring (35) is set larger than a set load (F1) of the closing spring (36).

Images