CN101858271B - Rotational speed control method and device for idle speed of petrol engine and working condition of small accelerator - Google Patents
Rotational speed control method and device for idle speed of petrol engine and working condition of small accelerator Download PDFInfo
- Publication number
- CN101858271B CN101858271B CN 201010161523 CN201010161523A CN101858271B CN 101858271 B CN101858271 B CN 101858271B CN 201010161523 CN201010161523 CN 201010161523 CN 201010161523 A CN201010161523 A CN 201010161523A CN 101858271 B CN101858271 B CN 101858271B
- Authority
- CN
- China
- Prior art keywords
- speed
- rotating speed
- engine
- target
- idling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000008569 process Effects 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 238000010304 firing Methods 0.000 claims description 49
- 230000001105 regulatory effect Effects 0.000 claims description 31
- 238000005496 tempering Methods 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000009123 feedback regulation Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 2
- 230000002028 premature Effects 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a method and a device for controlling idle speed of a petrol engine and rotational speed of a small accelerator. The device comprises an engine body, an electric control unit (ECU), a fuel injection device, an ignition device, a restrictor body and the like. The device is characterized in that: the restrictor body has nonadjustable and large enough idle speed air inlet quantity at an idle speed position; the electric control unit controls the ignition device; and the idle speed or a preset target rotational speed reached by the rotational speed of the small accelerator is fed back and controlled through great adjustment of an ignition advance angle. The method comprises the following steps of: 1) judging a compressed expansion process or an intake/exhaust process at present; 2) giving an ignition signal in the compressed expansion process, and avoiding giving the ignition signal in the intake/exhaust process; and 3) determining the ignition advance angle according to a difference between the current measured rotational speed of the engine and the target rotational speed and a basic ignition angle.
Description
Technical field
The present invention relates to the electronic fuel injection commonly used such as automatically controlled spark-ignited internal combustion engine, particularly automobile and motorcycle and the four-stroke gasoline engine of igniting.
Background technique
Spark-ignited internal combustion engine adopts the electronic control ignition technology, can freely adapt to various operating modes to the different requirements of ignition advance angle (sometimes referred to as firing angle),, reduction discharging texts energy-efficient in the hope of obtaining.Particularly for petrol engine, adopt electronic fuel injection and igniting, can accurately control petrolic combustion mixture air fuel ratio simultaneously, thereby increase substantially petrolic various performance, comprise startability, idling performance, run stability, power, oil consumption and the exhaust emissions etc. of motor.
Existing public technology great majority adopt the mode of automatically controlled idling air valve to change the engine combustion cycle acting of the operating modes such as idling, thereby it is stable to keep the idling speed of motor when different hot states or auxiliary power demand, the idling behind the motor starting a cold engine for example, or battery voltage crosses the idling when exciter current of generator increases suddenly when low, etc.In little throttle idle condition, the output torque characteristic of motor may serious nonlinear change occur with rotating speed, cause little throttle operation and motor to stablize no-load speed and inharmonic sensation occurs, for example throttle almost moving but rotating speed increase a lot.Existing general technology also is to control little throttle rotating speed by regulating idling air valve open area.
Yet, set up the increase that automatically controlled idling air valve must bring cost, the speed of response of idling air valve may not satisfy the demand of quick adjustment in addition.
Summary of the invention
The present invention's purpose is to provide controlling method and the device of the rotating speed of a kind of idling of automatically controlled spark-ignited internal combustion engine and working condition of small accelerator, do not need automatically controlled idling air valve to reach equally stable control idling and working condition of small accelerator rotating speed, adapt to different engine conditions and auxiliary power demand, thereby the simplification engine system reduces the motor cost.
The present invention's purpose reaches by following technical proposal, that is:
A kind of idle gasoline engine and little throttle method for controlling number of revolution and device, described device comprises: engine body, ECU (Electrical Control Unit) (ECU), fuel injection apparatus, ignition mechanism, throttle body etc., it is characterized in that, described throttle body has and can not turn down at idle position, enough large idle speed air admission amounts, can keep motor and under low temperature environment, stablize idling, in motor warming up process, described ECU (Electrical Control Unit) is controlled described ignition mechanism, significant adjusting by ignition advance angle, come feedback control idling or little throttle rotating speed to reach default rotating speed of target, may further comprise the steps:
1) according to engine condition and/or throttle grade setting rotating speed of target;
2) measure current engine speed;
3) come the feedback regulation firing angle according to the difference of current rotating speed and rotating speed of target, make engine speed close to rotating speed of target
According to this technological scheme, can omit automatically controlled idling air valve and system thereof, make under the prerequisite of engine system cost, engine idle and working condition of small accelerator still have enough air inflows, therefore cold and hot car startability is guaranteed, whether ECU reaches rotating speed of target according to engine speed is come the feedback regulation ignition advance angle, very large frictional loss in the time of can overcoming cold car idling, make the running stabilization of speed, and rapid response provides extra power to satisfy the auxiliary power demand under idling operation.
Because the tolerance of working condition of small accelerator is larger, the basic ignition advance angle of therefore demarcating according to Maximum Torque (MBT) will make working condition of small accelerator that larger moment of torsion is arranged, if after engine throttle leaves idle position, just enter immediately the control of basic ignition advance angle, may cause so the sudden change of Engine torque, stablize engine speed and the speed of a motor vehicle is brought difficulty to operator, may make motor too rough to the response of throttle.Therefore, in the technological scheme of the present invention, working condition of small accelerator is also designed a rotating speed target, come the rotating speed of feedback control working condition of small accelerator to the rotating speed of target convergence by regulating ignition advance angle.
Following technical proposal can further improve the present invention.
Described engine idle and little throttle method for controlling number of revolution are further comprising the steps of:
1) judges current compression-expansion process or the air intake-exhaust process of being in;
2) if be in the compression-expansion process, then provide fire signal, if be in the air intake-exhaust process, then do not provide fire signal;
3) determine ignition advance angle according to difference and the basic ignition angle of the current engine speed that records and rotating speed of target, next time firing angle is regulated as benchmark in default basic ignition angle in the ECU internal memory, if current rotating speed is greater than rotating speed of target, then postpone igniting, if current rotating speed is less than rotating speed of target, then premature ignition if current rotating speed equals rotating speed of target, then keeps current firing angle regulated quantity constant.
Because when phase place is postponed till very late in igniting, for example after top dead center, at intake and exhaust valve overlap open period, if there is ignition spark, to probably light the incoming mixture that just enters cylinder, thereby cause engine flashback, therefore, comprise the scheme of the invalid igniting in rejecting exhaust stroke latter stage in the technological scheme of the present invention, must judge current compression-expansion process or the air intake-exhaust process of being in.So-called " invalid igniting " is the ignition spark that a kind of exhaust stroke not needing to light a fire produces latter stage, do not add in ignition system in order to simplify the four stroke engine ignition mechanism distinguish when being compression top center or exhaust top dead center exist, inevitable ignition spark.In the electronic spark advance angular region of general engine design, invalid igniting can not produce the tempering problem, and reason is that invalid ignition spark only may be present in the waste gas, so be real invalid.
The present invention further improved also comprises:
Each regulated quantity at described basic ignition angle is in proportion with the difference of the current engine speed that records and rotating speed of target, and difference is larger, and regulated quantity is larger, but the ignition advance angle after regulating must be in the ignition advance angle allowed band.In certain scope, more then the every circular work of motor is larger in igniting, and therefore when the engine running resistance was constant, engine speed will be higher.Based on this principle, the proportional more quickly responding engine of the difference of firing angle regulated quantity and engine speed and rotating speed of target running resistance changes, thus fast with stabilization of speed near rotating speed of target, reduce the fluctuation of speed.
Yet, if the each regulated quantity of firing angle is excessive, so owing to measure the hysteresis of rotating speed etc., the quick oscillation on large scale that may bring firing angle and rotating speed, that is so-called adjusting overshoot, this will run counter to desire.On the contrary, if each regulated quantity is too small, so can not the establishment engine speed continue along the same direction rotating speed that departs from objectives.
So, improvement of the present invention also comprises: each regulated quantity at described basic ignition angle has a limit value, and described limit value can be a fixed value, or determines a value that dynamically changes according to nearest adjusting historical results, rotating speed is more responsive to the adjusting of firing angle, and described limit value is less.So just can namely prevent from regulating overshoot, also can prevent from regulating deficiency, thereby make engine running the most stable.
For vehicular petrol engine, in order to reduce discharging, exhaust device for catalytic treatment commonly used reaches certain value but the prerequisite that the exhaust device for catalytic treatment can effectively be worked is its temperature.Therefore, behind the motor starting a cold engine, hope can rapid heating exhaust device for catalytic treatment, and rapid warming-up in order to reach these purposes, generally behind starting a cold engine, can adopt the high idle speed strategy simultaneously.So improvement of the present invention also comprises: described rotating speed of target depends on engine temperature and starts rear running time, at idle position, be made as the high idle speed of constant rotational speed in the certain hour of described rotating speed of target behind starting a cold engine, and after described high idle speed process finished, the idling rotating speed of target was made as certain the constant normal idling speed that is lower than the high idle speed rotating speed.
As previously mentioned, the working condition of small accelerator control stability is one of the problem to be solved in the present invention.Petrolic characteristics are, at unloaded or little load behavior, vehicle low speed constant-speed driving operating mode for example, air input of engine by air is very responsive to throttle position or throttle position, after particularly technological scheme of the present invention has adopted very large idling tolerance, the output torque of working condition of small accelerator may be larger, cause easily throttle to the controlled variation of rotating speed, so, the present invention also comes the control engine rotating speed according to rotating speed of target under working condition of small accelerator, the improvement of this respect also comprises: described rotating speed of target depends on that accelerator open degree is (mainly for the E-Gas motor, throttle for machinery control, be equal to throttle opening), little throttle position in non-idling, described rotating speed of target increases with the increase of accelerator open degree or throttle opening, in predefined little throttle or trifle valve opening scope, by regulating the ignition advance angle feedback control on engine near described rotating speed of target, and when regulating ignition advance angle, the allowed band of ignition advance angle is: firing angle equals basic ignition angle default in the ECU internal memory the earliest, firing angle equals the critical firing angle of tempering the latest, the critical firing angle of described tempering depends on engine speed, and it is inner to be preset in the ECU control program.
Improvement of the present invention also comprises: during described ECU (Electrical Control Unit) feedback control idling speed, the scope of regulating ignition advance angle can be made as front 25 degree of crankshaft top dead center to atdc 25 degree; The door-plate of described throttle body is provided with the circular aperture of the minimum tolerance of control idling, and its diameter can be determined according to the required inlet flow area of cold car idling of motor, for example be not less than 1.2mm.The area of the circular aperture/length of side is minimum, therefore is subjected to the impurity adhesion such as dust, carbon deposit in the intake duct and changes that the possibility of inlet flow area is minimum, the circulation area pace of change is the slowest.Ignition advance angle can not be because at idling operation, the igniting of morning not only can not improve the circular work of motor again, may reduce on the contrary the circular work of motor early than 25 degree before the crankshaft top dead center; And light a fire after can not arriving atdc 25 degree, be because the igniting in evening can cause in-cylinder combustion very slowly can not finish again, the waste gas that burns away may be lighted next the circulation and enter the incoming mixture of cylinder, tempering namely occurs.Certainly, different engine design, the adjustable extent of this ignition advance angle can be different.
As previously mentioned, for fear of spark plug sparking during taking a breath, in technological scheme of the present invention, can not during the exhaust aspirating stroke of motor, produce so-called " invalid spark ", therefore must judge the running stroke of motor, ECU also comprises described in the present invention: device and/or the stroke judgement computer program of judging engine strokes.
Judge engine strokes, can be by the judgement to the phase detector signal installed on the camshaft, and for single-cylinder engine, can also judge by the pressure phase that inlet pressure sensor (MAPS) is measured, also can judge calculating according to certain logic program by the speed of crankshaft difference during the different strokes.
In a word, benefit of the present invention is, a kind of idle gasoline engine and little throttle method for controlling number of revolution and device are provided, can omit automatically controlled idling air valve and system thereof, make the engine system cost, but still realize good performance: under idling and working condition of small accelerator, air inflow is enough large, start easily, engine speed is in the rotating speed of target steady running, very large frictional loss and the fluctuation of hot car state engine speed when overcoming cold car idling, and rapid response provides extra power to satisfy the auxiliary power demand under idling operation, and the rotating speed speed of a motor vehicle is easy to control when little throttle operation.
Description of drawings
Fig. 1 is the formation sketch of the present invention's engine system.
Fig. 2 is that the firing angle of the embodiment of the invention is regulated the control logic sketch.
Fig. 3 is that the little throttle rotating speed of target of the embodiment of the invention is given an example.
Fig. 4 is that the critical igniting angular curve of tempering of the little throttle rotating speed of target control of the embodiment of the invention is given an example.
Fig. 5 be the starting a cold engine of the embodiment of the invention and start after the engine idle rotating speed and firing angle change procedure control result for example.
Fig. 6 is that the cold car of the embodiment of the invention is controlled the result for example to idling speed and the firing angle change procedure of hot car.
Fig. 7 is that little other rotating speed of throttle level and the firing angle change procedure control result of the embodiment of the invention gives an example.
Numbering and symbol description are as follows among the figure:
1-bent axle footmark and speed probe 2-bent axle 3-engine body
4-camshaft phase sensor 5-camshaft 6-engine temperature sensing unit
7-fuel injection apparatus 8-throttle body 9-throttle position sensor
10-solar term door-plate 11-master's idle speed air admission hole 12-ECU (Electrical Control Unit) (ECU)
13-intake manifold pressure sensor (MAPS) 14-ignition mechanism 20～38-logical calculated step
I-throttle or throttle opening rank (I＜0.75 is idling, and I=16 is standard-sized sheet) n-engine speed
Nct (I)-little throttle rank rotating speed of target nit-idling current rotating speed of rotating speed of target Dn-and rotating speed of target poor
The little throttle rank igniting of dsc-regulated quantity dsi-idling rank igniting regulated quantity
The little throttle rank igniting of kc-adjusting ratio ki-idling rank igniting adjusting ratio Sita-output firing angle
The minimum idling firing angle of the maximum idling firing angle of IGNmap-basic ignition angle Idmax-Idmin-
The critical firing angle Ignition-igniting of Bkf-tempering output control logic variable
The below describes the present invention in detail by these accompanying drawings.
Embodiment
In enforcement the present invention's shown in Figure 1 engine system, include engine body 3, bent axle 2, camshaft 5, throttle body 8, ECU (Electrical Control Unit) (ECU) 12, ignition mechanism 14, fuel injection apparatus 7 and various sensor.On throttle body 8, be provided with the solar term door-plate 10 of adjusting engine air input, be provided with uncontrollable main idle speed air admission hole 11 at solar term door-plate 10, its size is stablized the required minimum air inflow of idling according to motor and is determined, for example for the motorcycle engine of 125-150cc discharge capacity, can design main idle speed air admission hole 11 and be the circular hole of diameter 2-2.5mm, for the motorcycle engine of 50-110cc discharge capacity, can design main idle speed air admission hole 11 and be the circular hole of diameter 1.2-2.2mm.Certainly, the idle speed air admission amount is except flowing into by main idle speed air admission hole 11, and a certain amount of idle speed air admission also can be flow through in the slit that the periphery of solar term door-plate 10 and intake duct form.Can also design in addition a bypass idling flow control device (not shown) to adapt to the excessive and especially big idling tolerance of needs of individual engines idling resistance, also be conducive to when altitude environment is used motor, further tune up the idle speed air admission Flow area simultaneously.ECU 12 receives the signal that records from bent axle footmark and speed probe 1, camshaft phase sensor 4, engine temperature sensing unit 6, throttle position sensor 9, intake manifold pressure sensor (MAPS) 13 etc., calculate engine speed n, the current residing stroke of this cylinder and crank phase, engine temperature, suction press, closure (throttle) Grade I etc., and after logical calculated is processed according to definite phase place and pulsewidth output fuel injection pulse to fuel injection apparatus 7, export firing pulse to ignition mechanism 14 according to definite phase place and pulsewidth.
Fig. 2 is that the firing angle of the embodiment of the invention is regulated the control logic sketch, in revolution, at first measure current operating parameters (step 20), then judge whether current be compression-expansion stroke (step 21), if not then entering step 37, the output control logic variable Ignition assignment of will lighting a fire is false, if yes then enter step 22, and be true in the step 36 output control logic variable Ignition assignment of will lighting a fire.In step 22, judge whether the throttle rank is in idling, namely whether I if yes then enter step 23, calculates idling firing angle less than 0.75, if not then entering step 28, calculates non-idling firing angle.The calculating of firing angle Sita is based on: the basic ignition angle IGNmap in the difference Dn of current rotation speed n and target idling speed nit or non-idling rotating speed of target nct (I), igniting adjusting ratio ki or kc, the control table, the maximum idling firing angle Idmax of permission and the minimum idling firing angle Idmin or the critical firing angle Bkf of tempering that allow.The reason of distinguishing idling and non-idling is, the basic ignition angle IGNmap of non-idling is generally take Maximum Torque igniting angle as the basis, and that the basic ignition angle IGNmap of idle position often obtains the firing angle more corresponding than maximum mean indicated pressure is little, so the igniting adjustment of non-idling only allows to postpone, it is Dsc＞0, such as step 29 to shown in the step 34, and the igniting adjustment of idling both can have been postponed and also can shift to an earlier date, but must be within the scope of Idmax and Idmin restriction, such as step 24 to shown in step 27, the step 35.After changing non-idling over to from idling, idling rank igniting regulated quantity dsi will be set to 0 (step 34) at every turn, be to begin feedback regulation idling firing angle from IGNmap to guarantee to enter next time after the idling.In like manner, change idling over to from non-idling at every turn after, non-idling rank igniting regulated quantity dsc will be set to 0 (step 35), also be to begin feedback regulation from IGNmap to guarantee to enter next time after the non-idling.In step 38, the last processing result of output revolution comprises output fuel injection pulse and/or firing pulse etc., changes again afterwards step 20 over to, carries out the processing that next turns.
Fig. 3 is the relation curve exemplary plot of little other rotating speed of target of throttle level of the non-idling of a 125cc motorcycle engine and throttle Grade I, and y coordinate represents with the difference of idling rotating speed of target nit with little other rotating speed of target of throttle level nct (I) among the figure.The throttle Grade I is larger, and then nct (I)-nit is just larger.It is relevant with running time after engine temperature and/or the startup that Nit generally is designed to, when engine temperature is lower than certain numerical value or within the regular hour after the startup, Nit is made as high idle speed, 1600r/min for example, and after the high idle speed condition does not satisfy, Nit is made as normal idling, for example 1450r/min.When the throttle rank is larger, can by nct (I) is made as more than or equal to motor the rotating speed of high permission realize moving according to basic ignition angle IGNmap under the non-little throttle rank.
Fig. 4 be the critical firing angle Bkf of tempering of non-idling operation of a 125cc motorcycle engine and rotating speed relation for example, because the rotating speed increase may cause residual waste gas quantity to increase, and the increase of the combustion duration that the rotating speed increase brings is greater than the increase of velocity of combustion, therefore the after-burning possibility increases, and the critical firing angle Bkf of tempering has also correspondingly shifted to an earlier date.In fact, Idmin is equivalent to the critical firing angle of tempering under the idling speed.Because the restriction of tempering phenomenon, the idle speed air admission amount can not unrestrictedly increase, if the idle speed air admission amount is excessive, will can not adjust to than the critical firing angle of tempering is also late and dwindle the effective coverage that firing angle is controlled rotating speed owing to igniting, hot car rotating speed may still can be higher.
Fig. 5 and Fig. 6 be for implementing the idling speed control example of a motorcycle engine of the present invention, Figure 5 shows that starting a cold engine and start after short time in the idling process, rotating speed wherein is transient speed, the throttle rank remains the idling rank always.Use the given basic ignition angle of IGNmap during startup, after starting successfully, be transitioned into gradually according to high idle speed rotating speed of target 1600r/min and adjust firing angle, the result reached the control target in about 12 seconds after startup, entered normal idling rotating speed of target control in about 45 seconds after startup, mean speed is 1450r/min as a result.Further show warming-up process subsequently among Fig. 6, can see in the warming-up process, the idling mean speed is stably controlled at 1450r/min always, and along with the rising of engine temperature, the engine friction resistance reduces, therefore firing angle is postponed automatically gradually, reaches the latest atdc 12 Shaft angle of writing music.
Fig. 7 is that the rotating speed of target control procedure of working condition of small accelerator is given an example, and can see, when the throttle rank is suddenlyd change, because unexpected variation has occured in rotating speed of target, and the current rotating speed of motor just produces difference with rotating speed of target, and at this moment firing angle begins quick adjustment, makes rotating speed level off to rotating speed of target.When the throttle rank remained unchanged, rotating speed was stably controlled near rotating speed of target.
The present invention's idling and the method for controlling number of revolution of working condition of small accelerator and device are applicable to the spark-ignited internal combustion engine of single cylinder and multi-cylinder, are particularly useful for automobile and motorcycle spark-ignited internal combustion engine.
The purpose of above-described embodiment is for the present invention is described, but does not limit the present invention.That all the present invention's of utilization design and Spirit Essence carry out, apparent change design for the those of ordinary skill of related domain still belong to the protection domain of the present invention's claim.
Claims (10)
1. an idle gasoline engine and little throttle method for controlling number of revolution may further comprise the steps:
1) according to engine condition and/or throttle grade setting rotating speed of target;
2) measure current engine speed;
3) come the feedback regulation firing angle according to the difference of current rotating speed and rotating speed of target, make engine speed close to rotating speed of target;
4) when engine condition and operating mode satisfy rotating speed of target control, firing angle is regulated: if current rotating speed greater than rotating speed of target, is then postponed igniting as benchmark in basic ignition angle default in the ECU (Electrical Control Unit) internal memory; If current rotating speed is less than rotating speed of target, then premature ignition; If current rotating speed equals rotating speed of target, then keep current firing angle regulated quantity constant;
5) when ignition advance angle is regulated, the allowed band of ignition advance angle is: firing angle equals basic ignition angle default in the ECU (Electrical Control Unit) internal memory the earliest, firing angle equals the critical firing angle of tempering the latest, the critical firing angle of described tempering depends on engine speed, and it is inner to be preset in the ECU (Electrical Control Unit) control program;
6) judge current compression-expansion process or the air intake-exhaust process of being in;
If be in the compression-expansion process, then provide fire signal, if the air intake-exhaust process does not then provide fire signal.
2. as claimed in claim 1 idle gasoline engine and little throttle method for controlling number of revolution, each regulated quantity of described firing angle, be in proportion with the difference of the current engine speed that records and rotating speed of target, difference is larger, regulated quantity is larger, but the ignition advance angle after regulating must be in the ignition advance angle allowed band.
3. as claimed in claim 2 idle gasoline engine and little throttle method for controlling number of revolution, each variation of the regulated quantity of described firing angle has a limit value, described limit value can be a fixed value, or determine a limit value that dynamically changes according to nearest adjusting historical results: rotating speed is more responsive to the adjusting of firing angle, and described limit value is less.
4. as claimed in claim 3 idle gasoline engine and little throttle method for controlling number of revolution, described rotating speed of target depends on engine temperature and starts rear running time, at idle position, be made as the high idle speed of constant rotational speed in the certain hour of described rotating speed of target behind starting a cold engine, and after described high idle speed process finished, the idling rotating speed of target was made as certain the constant normal idling speed that is lower than the high idle speed rotating speed.
5. as claimed in claim 3 idle gasoline engine and little throttle method for controlling number of revolution, described rotating speed of target depends on accelerator open degree or throttle opening, little throttle position in non-idling, described rotating speed of target increases with the increase of accelerator open degree, in predefined little throttle or trifle valve opening scope, approach to described rotating speed of target by regulating ignition advance angle feedback control on engine rotating speed.
6. an idle gasoline engine and little throttle revolution speed control device, comprise engine body, ECU (Electrical Control Unit), fuel injection apparatus, ignition mechanism and throttle body, it is characterized in that, described throttle body has and can not turn down at idle position, enough large idle speed air admission amounts, can keep motor and under low temperature environment, stablize idling, in motor warming up process, described ECU (Electrical Control Unit) is controlled described ignition mechanism, significant adjusting by ignition advance angle, come the feedback control idling speed to reach default target idling speed, keep motor steady running under near constant idling speed.
7. as claimed in claim 6 idle gasoline engine and little throttle revolution speed control device is characterized in that, during described ECU (Electrical Control Unit) feedback control idling speed, the scope of regulating ignition advance angle is that front 25 degree of crankshaft top dead center are spent to atdc 25.
8. as claimed in claim 6 idle gasoline engine and little throttle revolution speed control device is characterized in that, the door-plate of described throttle body is provided with the circular aperture of the minimum tolerance of control idling, and its diameter is not less than 1.2mm.
9. as claimed in claim 6 idle gasoline engine and little throttle revolution speed control device, it is characterized in that, in predefined trifle valve opening scope, pass through ignition advance angle feedback control on engine rotating speed as far as possible near predefined little throttle rotating speed of target by described ECU (Electrical Control Unit).
10. as claimed in claim 6 idle gasoline engine and little throttle revolution speed control device is characterized in that, in the described ECU (Electrical Control Unit), include device and/or the stroke of judging engine strokes and judge computer program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161523 CN101858271B (en) | 2010-04-30 | 2010-04-30 | Rotational speed control method and device for idle speed of petrol engine and working condition of small accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161523 CN101858271B (en) | 2010-04-30 | 2010-04-30 | Rotational speed control method and device for idle speed of petrol engine and working condition of small accelerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101858271A CN101858271A (en) | 2010-10-13 |
| CN101858271B true CN101858271B (en) | 2013-04-24 |
Family
ID=42944385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010161523 Expired - Fee Related CN101858271B (en) | 2010-04-30 | 2010-04-30 | Rotational speed control method and device for idle speed of petrol engine and working condition of small accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101858271B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343717B (en) * | 2013-07-22 | 2016-04-13 | 力帆实业(集团)股份有限公司 | A kind of motorcycle with electronic fuel injection system idle speed control |
| CN103612633B (en) * | 2013-11-26 | 2016-03-16 | 奇瑞汽车股份有限公司 | A kind of method and apparatus controlling engine idle rotational |
| CN111301182B (en) * | 2018-12-12 | 2022-08-19 | 上海汽车集团股份有限公司 | Charging control method and device and electronic equipment |
| CN110792518A (en) * | 2019-11-18 | 2020-02-14 | 联合汽车电子（重庆）有限公司 | Low-speed low-load control system of electronic fuel injection motorcycle |
| CN115217651A (en) * | 2021-09-23 | 2022-10-21 | 广州汽车集团股份有限公司 | Engine heat engine control method |
| CN114412682B (en) * | 2022-01-04 | 2023-12-15 | 武汉菱电汽车电控***股份有限公司 | Separate cylinder ignition control method and system for enhancing idle speed stability |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1380494A (en) * | 2002-05-17 | 2002-11-20 | 西安交通大学 | Miniature carburetor gasoline enging digital ignition control method capable of regulating idle speed and its equipment |
| CN101363380A (en) * | 2008-10-09 | 2009-02-11 | 张和君 | Electric-controlled petrol engine work system |
-
2010
- 2010-04-30 CN CN 201010161523 patent/CN101858271B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1380494A (en) * | 2002-05-17 | 2002-11-20 | 西安交通大学 | Miniature carburetor gasoline enging digital ignition control method capable of regulating idle speed and its equipment |
| CN101363380A (en) * | 2008-10-09 | 2009-02-11 | 张和君 | Electric-controlled petrol engine work system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101858271A (en) | 2010-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101644195B (en) | Engine automatic stop-start controller | |
| CN101858271B (en) | Rotational speed control method and device for idle speed of petrol engine and working condition of small accelerator | |
| JP2857660B2 (en) | Air-fuel ratio control method for internal combustion engine having spark plug with heater | |
| US20060225701A1 (en) | Method for increasing the reproducibility of the start-up during start-stop operation of an internal combustion engine | |
| CN103573378A (en) | Method and system for regulating engine temperature | |
| CN101605975B (en) | Controller of internal combustion engine | |
| JP3589011B2 (en) | Fuel injection control device for internal combustion engine | |
| CN103790715B (en) | Petrol engine control system and its control method | |
| JPH09250435A (en) | Engine control method and control device therefor | |
| JP3966216B2 (en) | Fuel injection control device for internal combustion engine | |
| JPH1047039A (en) | Method for activating catalyst of engine and catalyst activating device | |
| JP3846349B2 (en) | Powertrain control device | |
| JP2004278326A (en) | Egr control device of internal combustion engine | |
| JP5029059B2 (en) | Internal combustion engine control system | |
| JP3729147B2 (en) | Powertrain control device | |
| JP4055542B2 (en) | Fuel property discrimination device for internal combustion engine | |
| JP2979872B2 (en) | Warm-up control method for exhaust gas purification device of internal combustion engine | |
| US7324890B2 (en) | Ignition timing control apparatus for internal combustion engine | |
| JP7331785B2 (en) | Control device for internal combustion engine | |
| JPH0353001Y2 (en) | ||
| JP2005030253A (en) | Control device of internal combustion engine with variable compression ratio mechanism | |
| JPH1018885A (en) | Idle speed controller for internal combustion engine | |
| JPH05231285A (en) | Control device for engine | |
| JPH0523808Y2 (en) | ||
| JPH09209818A (en) | Fuel properties detector and fuel injection controller for engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SHAOXING PINGGUO ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHEJIANG FAI ELECTRONICS CO., LTD. Effective date: 20110624 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310018 NO. 22, 22ND STREET, HANGZHOU ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE (XIASHA), HANGZHOU CITY, ZHEJIANG PROVINCE TO: 312300 NO. 105, NO. 299, HAIBIN AVENUE, LIHAI TOWN, SHAOXING BINHAI NEW CITY, SHAOXING CITY, ZHEJIANG PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20110624 Address after: 312300, No. 299, Haibin Avenue, Lek Hai Town, Shaoxing Binhai New Town, Zhejiang, Shaoxing, 105 Applicant after: Shaoxing Pingguo Electronics Technology Co.,Ltd. Address before: 310018, No. 22, No. 22, Hangzhou economic and Technological Development Zone (Xiasha), Zhejiang, Hangzhou Applicant before: Zhejiang FAI Electronics Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG FAI ELECTRONICS CO., LTD. Free format text: FORMER OWNER: SHAOXING PINGGUO ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20120419 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 312300 SHAOXING, ZHEJIANG PROVINCE TO: 310013 HANGZHOU, ZHEJIANG PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20120419 Address after: 310013, room 413, 612 Pier Road, Hangzhou, Zhejiang, Xihu District Applicant after: Zhejiang FAI Electronics Co., Ltd. Address before: 312300, No. 299, Haibin Avenue, Lek Hai Town, Shaoxing Binhai New Town, Zhejiang, Shaoxing, 105 Applicant before: Shaoxing Pingguo Electronics Technology Co.,Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20170430 |