CN1294258A - Method and device for controlling I.C. engine - Google Patents
Method and device for controlling I.C. engine Download PDFInfo
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- CN1294258A CN1294258A CN00124321A CN00124321A CN1294258A CN 1294258 A CN1294258 A CN 1294258A CN 00124321 A CN00124321 A CN 00124321A CN 00124321 A CN00124321 A CN 00124321A CN 1294258 A CN1294258 A CN 1294258A
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- combustion engine
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- Ignition Installations For Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
According to the rotate speed information of the combustion engine, judging if the rotate speed is accelerate ou of control. So that generating a control signal. And reduing the rotate speed based on the control signal.
Description
The present invention relates to a kind of method and apparatus of controlling combustion engine; In particular, relating to a kind of internal-combustion engine that prevents quickens until method and apparatus out of control.
In spark-ignition internal combustion engine, discharge environmentally harmful gas for best combustion efficient and minimally the firing time of ignition spark is The key factor very.Depend on the rotating speed and the load of motor correct firing time.There are some motors that automatic transmission is housed to equip microprocessor control system, electric control device (ECU) for example, this device comprise the sensor of oxygen content of being used for detecting engine rotating speed, intake temperature and pressure, engine temperature and waste gas etc.
Yet often can not provide the optimal engine performance the suitable firing time that microprocessor determined.For example, particularly vehicle moment of beginning to start, the fault of microprocessor control system may make the rotating speed of internal-combustion engine bring up to degree out of control, thereby forces vehicle suddenly to preshoot.
In addition, even vehicle is popped out road owing to the fault of microprocessor control system outside, internal-combustion engine will still work on.Therefore, also need steering dish, brake petal or the like, to prevent the generation of second accident.
Therefore, the purpose of this invention is to provide a kind of internal-combustion engine that prevents and accelerate to the degree out of control and the method and apparatus of unlikely rapid braking.According to one aspect of the present invention, a kind of method of controlling combustion engine is provided, it comprises the following steps:
Obtain the rotary speed information of above-mentioned internal-combustion engine rotational speed;
According to above-mentioned rotary speed information, determine whether the rotational speed of above-mentioned internal-combustion engine increases to degree out of control, to produce a control signal, wherein, on behalf of the rotating speed of above-mentioned internal-combustion engine, above-mentioned control signal increase to degree out of control; And
According to above-mentioned control signal above-mentioned rotational speed is reduced.
Describe the preferred embodiments of the present invention with reference to the accompanying drawings in detail, will make above and other purpose of the present invention and advantage become more obvious.In the accompanying drawing:
Fig. 1 is used to prevent that according to of the present invention internal-combustion engine from accelerating to the block diagram of device out of control;
Fig. 2 is the block diagram that is used for the device of controlling combustion engine firing time according to of the present invention; And
Fig. 3 is that explanation accelerates to the flow chart of step out of control according to the internal-combustion engine that prevents of the present invention.
See also Fig. 1, expression is used to prevent that according to of the present invention internal-combustion engine from accelerating to the block diagram of device out of control among the figure.
The speed probe 11 of internal-combustion engine is used to measure the rotating speed of internal-combustion engine, preferably measures indirectly.In other words, the measurement of rotating speed should be very small for the influence of internal-combustion engine itself.Because it is that fault by electric control device (ECU) causes that most internal-combustion engine quickens suddenly, so, according to the present invention, the method for measuring rotating speed preferably with provide the method for rotating speed different for electric control device.If necessary, can be with an Equivalence value, for example voltage and so on replaces rotating speed itself.
Information about rotating speed is sent to differentiation element 12, and this unit produces a rotating speed with respect to the derivative of time, i.e. a differential value according to the information of rotating speed.The derivative of rotating speed is offered unexpected acceleration determining unit 13.
Meanwhile, an idle running sensor 14 is used to monitor that whether internal-combustion engine is in idle running.Generally, accelerator pedal is installed on the ground of operator cabin of vehicle, and internal-combustion engine then is installed on this vehicle.Above-mentioned accelerator pedal is pressurizeed by a spring, makes it be in neutral, and can swing along with driver's pressure.Therefore, have the rolling reduction that the idle running sensor 14 that waves the potentiometer on the axle that is installed in accelerator pedal can be used to detect accelerator pedal.The rolling reduction of above-mentioned accelerator pedal also offers unexpected acceleration determining unit 13.
By to the derivative of above-mentioned rotational speed and the comparison of predetermined value, quicken determining unit 13 suddenly and just can differentiate whether need further to control rotating speed.Specifically, judge the derivative N of rotating speed exactly
vPredetermined rotary derivative B during greater than idle running whether.Predetermined rotary derivative B determines with test, and is stored in the storage 15.If the derivative N of rotating speed
vRotary derivative B greater than predetermined then quickens determining unit 13 suddenly and just produces a control signal.This control signal will make the rotating speed of internal-combustion engine reduce.This control signal sends control unit 16 to.
Therefore, when the undesired rising of rotating speed, and internal-combustion engine also works on, so steering wheel, brake petal or the like can be handled.
See also Fig. 2, wherein represented block diagram according to the device of controlling combustion engine of the present invention firing time.
Usually, all use ignition transformer 196 to be provided at and produce the electric arc necessary high voltages between the gap of spark plug 200, so that fire fuel and AIR MIXTURES.Wherein, igniting makes primary air produce the low pressure excitation, and secondary winding produces high voltage output, again spark plug 200 is delivered in high pressure output.Very short following period of time after secondary winding is subjected to encouraging produces a high voltage.
One end ground connection of the secondary winding of ignition transformer 196, and its other end is connected with power supply 194, switch 190 and relay 180.Power supply 194 provides electric energy for all elements in the device, and is to make electric energy offer all elements in the device off and on by the effect of the switch 190 of electric control device 192 control.
According to the present invention, a magnetic flux Test coil 111 is set near being preferably in the spark plug cable 198 that is connected with secondary winding, above-mentioned secondary winding is used to produce the high voltage output that flows to spark plug 200.Magnetic flux Test coil 111 detects the variation of the magnetic flux that is produced around the spark plug cable 198.If necessary, also can be arranged on the primary air place to magnetic flux Test coil 111, rather than be arranged on the secondary winding place.As mentioned above, be transported in the spark plug 200 and go because high voltage is a gap operating according to switch 190, so the period of change of spark plug cable 198 ambient magnetic flux amounts just equals the operation cycle of switch 190.
A FV convertor 115 converts the period of change of magnetic flux to a voltage.This voltage is best and rotating speed is proportional.Above-mentioned information of voltage offers a differentiation element 120, and this differentiation element is determined the derivative of above-mentioned voltage with respect to the time.The derivative of voltage is offered unexpected acceleration determining unit 130.
Meanwhile, an idle running sensor 140 monitors whether above-mentioned internal-combustion engine dallies.Above supervision result is offered unexpected acceleration determining unit 130.
Compare by derivative and predetermined value to voltage, above-mentioned unexpected acceleration determining unit 130 need can judge whether further control rotating speed, promptly controls the firing time of spark plug.Specifically, whether the derivative of judging voltage exactly predetermined voltage derivative during greater than idle running, and predetermined voltage derivative wherein is definite through testing, and is stored in the storage 150.If the derivative of voltage is greater than predetermined voltage derivative, just above-mentioned unexpected acceleration determining unit 130 produces a control signal.This control signal flows to a control unit 160.
See also Fig. 3, Fig. 3 is that explanation accelerates to the flow chart of step out of control according to the internal-combustion engine that prevents of the present invention.
At first, in step S31, detect the variation of spark plug cable magnetic flux on every side.
In step S32, the variation of magnetic flux is converted to a voltage, wherein, this voltage and above-mentioned rotating speed are proportional.
In step S33, voltage was differentiated to the time, to produce the derivative of a voltage.
In step S34, with the derivative D of the voltage that produced
vCompare with predetermined differential voltage B.If the derivative D of voltage
vGreater than predetermined differential voltage B, then program enters step S35, otherwise, program constipation bundle.
In step S35, judge whether internal-combustion engine dallies by the motion that detects accelerator pedal.If idling of IC engine, just then program enters step S36 and S37.If necessary, can carry out step S36 or step S37.
In step S36, the control Fuelinjection nozzle makes it spray less fuel in the igniting process each time.In step S37, the relay that is used for the control ignition time is controlled, make the firing time of spark plug longer.
Though more than only the present invention has been described with certain embodiments, for those skilled in the art, clearly, do not breaking away under the prerequisite by the determined spirit and scope of claim of the present invention, the present invention can have various changes and modifications.
Claims (14)
1. the method for a controlling combustion engine, it comprises the following steps:
Obtain the rotating speed data of above-mentioned internal-combustion engine rotational speed;
According to the information of above-mentioned rotational speed, determine whether the rotational speed of above-mentioned internal-combustion engine increases to degree out of control, to produce a control signal, wherein, on behalf of the rotating speed of above-mentioned internal-combustion engine, above-mentioned control signal increase to degree out of control; And
According to above-mentioned control signal above-mentioned rotational speed is reduced.
2. the method for claim 1 is characterized in that, it also comprises the following steps:
Monitor whether above-mentioned internal-combustion engine dallies, to produce an idle running signal;
According to above-mentioned idle running signal above-mentioned control signal is modified to a control signal through revising; And
Replace above-mentioned control signal with above-mentioned through the control signal of revising.
3. the method for claim 1 is characterized in that, above-mentioned determining step comprises following each step:
Produce the differential rotary speed information according to above-mentioned rotary speed information, wherein, above-mentioned differential rotary speed information is corresponding to the differential value of above-mentioned rotating speed; And
Above-mentioned differential rotary speed information and the value of being scheduled to are compared, to produce above-mentioned control signal.
4. method as claimed in claim 3 is characterized in that, above-mentioned control signal represents that the differential value of above-mentioned rotating speed is greater than predetermined value.
5. the method for claim 1 is characterized in that, above-mentioned obtaining step comprises following each step:
Detect the variation of spark plug cable ambient magnetic flux amount, so that carry high voltage output to spark plug;
The variation of above-mentioned magnetic flux is converted to a relevant with it voltage; And calculate above-mentioned rotary speed information according to above-mentioned voltage.
6. the method for claim 1 is characterized in that, the step of above-mentioned reduction rotational speed comprises Fuelinjection nozzle of control, thereby its fuel that is ejected in the above-mentioned internal-combustion engine is reduced.
7. the method for claim 1 is characterized in that, the step of above-mentioned reduction rotational speed comprises the light-off period of controlling spark plug, thereby makes light-off period longer.
8. device that is used for controlling combustion engine, it comprises:
Speed probe is used to obtain the rotary speed information of above-mentioned internal-combustion engine;
Be used for the information according to above-mentioned rotational speed, determine whether the above-mentioned rotational speed of above-mentioned internal-combustion engine increases rapidly, thereby produce the device of a control signal, wherein, on behalf of the rotating speed of above-mentioned internal-combustion engine, above-mentioned control signal increase rapidly; With
Make the device of above-mentioned rotational speed reduction according to above-mentioned control signal.
9. device as claimed in claim 8 is characterized in that it also comprises:
Be used to monitor whether above-mentioned internal-combustion engine dallies, to produce the device of an idle running signal;
According to the idle running signal control signal is modified to a device through the control signal of correction; With
With the device that replaces above-mentioned control signal through the control signal of revising.
10. device as claimed in claim 8 is characterized in that, the above-mentioned device that is used to determine comprises:
According to the differentiation element of above-mentioned rotary speed information generation differential rotary speed information, wherein, above-mentioned differential rotary speed information is corresponding to the differential value of above-mentioned rotating speed; And
Be used for above-mentioned differential rotary speed information and predetermined value are compared, to produce the comparator of above-mentioned control signal.
11. device as claimed in claim 10 is characterized in that, above-mentioned control signal represents that the differential value of above-mentioned rotating speed is greater than predetermined value.
12. device as claimed in claim 8 is characterized in that, above-mentioned speed probe comprises:
Be used to detect the variation of spark plug cable ambient magnetic flux amount, so that carry the magnetic-flux detector of high voltage output to spark plug;
Be used for the variation of above-mentioned magnetic flux is converted to the transducer of a relevant with it voltage; And
Calculate the device of above-mentioned rotary speed information according to above-mentioned voltage.
13. device as claimed in claim 8 is characterized in that, the above-mentioned device that rotating speed is reduced comprises the device of controlling Fuelinjection nozzle, thereby the fuel that is ejected in the above-mentioned internal-combustion engine is reduced.
14. device as claimed in claim 8 is characterized in that, the above-mentioned device that reduces rotational speed that makes comprises the device of controlling the plug ignition time, thereby makes firing time longer.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR22910/1999 | 1999-10-22 | ||
| KR16107/2000 | 2000-03-29 | ||
| KR20000016107 | 2000-03-29 | ||
| KR18596/2000 | 2000-04-10 | ||
| KR1020000018596A KR100337690B1 (en) | 1999-04-21 | 2000-04-10 | Apparatus for detecting and controlling the sudden departure in auto-transmission automobiles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1294258A true CN1294258A (en) | 2001-05-09 |
Family
ID=55082675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00124321A Pending CN1294258A (en) | 1999-10-22 | 2000-08-31 | Method and device for controlling I.C. engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2001140737A (en) |
| CN (1) | CN1294258A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418740A (en) * | 2007-10-23 | 2009-04-29 | 福特环球技术公司 | I.c. engine with shared high-voltage power supply for both fuel injectors and ionization sensors |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101294036B1 (en) | 2007-06-12 | 2013-08-08 | 현대자동차주식회사 | Engine information recording method for vehicle |
-
2000
- 2000-08-31 CN CN00124321A patent/CN1294258A/en active Pending
- 2000-10-13 JP JP2000313926A patent/JP2001140737A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418740A (en) * | 2007-10-23 | 2009-04-29 | 福特环球技术公司 | I.c. engine with shared high-voltage power supply for both fuel injectors and ionization sensors |
| CN101418740B (en) * | 2007-10-23 | 2014-11-26 | 福特环球技术公司 | I.c. engine with shared high-voltage power supply for both fuel injectors and ionization sensors |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001140737A (en) | 2001-05-22 |
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| BB1A | Publication of application | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |