CN108386289A - A kind of engine ignitor - Google Patents
A kind of engine ignitor Download PDFInfo
- Publication number
- CN108386289A CN108386289A CN201711125837.9A CN201711125837A CN108386289A CN 108386289 A CN108386289 A CN 108386289A CN 201711125837 A CN201711125837 A CN 201711125837A CN 108386289 A CN108386289 A CN 108386289A
- Authority
- CN
- China
- Prior art keywords
- tooth
- oil spout
- ignition
- ang
- engine
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
- F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/1502—Digital data processing using one central computing unit
Abstract
The present invention proposes a kind of engine ignitor, it includes controller and actuator, the actuator is used to execute igniting according to the order of controller, at the time of the controller is used to determine oil spout according to the oil spout ignition duration and degree of advance of engine and execute igniting, and corresponding oil spout or ignition event tooth number are calculated accordingly, and when bent axle interrupts generation, detect whether the tooth is event tooth and executes corresponding oil spout or ignition event.Shown by bench test verification：Using automobile engine smooth running under this igniter, oil spout, ignition control signal accurate and effective are practical.
Description
Technical field
The present invention relates to car engine ignition control technology fields, and in particular to the engine that a kind of can be precisely controlled
Igniter.
Background technology
Using contactless or even without in the electronic ignition system of ignition distributor, oil spout, igniting sequential control are established to song
On the basis that shaft position correctly judges, they decide the action of system bottom fuel injector, ignition coil, and then influence hair
The normal operation of motivation.Therefore design science, effective oil spout, ignition control strategy can be embodied for all multi-parameters of engine
Accurately control so that engine can operate in optimum Working and take into account its dynamic property and discharge index always.
Inventor has devised a kind of engine ignitor of the present invention using automobile engine as research object.
Invention content
The present invention is directed to automobile engine, proposes the igniter of the present invention：
A kind of engine ignitor comprising controller and actuator, the actuator are used for the life according to controller
Order executes igniting, and the controller is for determining oil spout according to the oil spout ignition duration and degree of advance of engine and holding
At the time of row igniting, and corresponding oil spout or ignition event tooth number are calculated accordingly, and when bent axle interrupts generation, detect the tooth
Whether it is event tooth and executes corresponding oil spout or ignition event.
Further, the controller calculates corresponding oil spout or ignition event tooth number as follows：
Calculate the corresponding angle interval of fuel injection pulsewidth according to the following formula first：
ANGFUEL=tpulse*ω/C；
Angle interval between oil injection event tooth and oil spout initial time calculates according to the following formula：
ANGPRE=(A- [ANGFUEL] %A- (ANGFUEL-[ANGFUEL]))
Wherein [] indicates that, to variable rounding, % expressions take the remainder variable；
It is to be calculated according to the following formula according to the tooth number for obtaining oil spout tooth with top dead centre tooth number：
Angle A NG of the igniting initial time to top dead centreIGNIt calculates according to the following formula：
ANGIGN=(tdwell+tadv)*ω/C
Angle A NG of the ignition event tooth to igniting initial timeIGNPREIt calculates according to the following formula：
ANGIGNPRE=(A- [ANGIGNPRE] %A- (ANGIGNPRE-[ANGIGNPRE]))
The tooth number such as following formula of igniting tooth are finally calculated according to top dead centre tooth number：
Wherein A is the number of teeth of gear, and NCIC is the number of teeth in each working cycles of engine；ω is angular speed and has ω
=A*N, unit are：Deg/s, N are the real-time rotating speed of engine, unit r/min；M is top dead centre tooth number；C is that timer is per second
The count value of clock；tpulseFor fuel injection pulsewidth, tdwellFor ignition closed angle, tadvFor Optimum spark advance angle.
Compared with prior art, the present invention has the advantages that：
(1) control method can correctly judge that edentulous site carries out engine synchronization according to crankshaft signal, and with this
On the basis of calculate oil spout, the ignition event tooth number of each cylinder.
(2) control method can be not only used for generating the oil spout ignition signal of petrol engine, while can be used for turning over
Translate the CNG engine management systems of formula.
(3) the engine smooth running under the control method, oil spout, ignition control signal are shown by bench test verification
Accurate and effective, control strategy are practical.
Description of the drawings
Fig. 1 is the tooth schematic diagram calculation of oil spout tooth；
Fig. 2 is the tooth schematic diagram calculation of igniting tooth；
Fig. 3 is the using renderings of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings, but is not limited in any way to the present invention, is based on
Any transformation, each falls within the scope of the present invention made by present invention teach that.
Embodiment one.
Crankshaft-position signal is the basis of oil spout ignition timing, generally passes through the contactless biography on engine body
Sensor obtains the signal, magnetoelectric sensor of the engine management system generally use equipped with permanent magnet and is installed on song
On axis, the pulse disc made of ferrimagnet judge bent axle current location and rotating speed.The one kind that provides for of this example is started
Machine igniter comprising controller and actuator, the actuator are used to execute igniting, the control according to the order of controller
At the time of device processed is used to determine oil spout according to the oil spout ignition duration and degree of advance of engine and execute igniting, and according to
This calculates corresponding oil spout or ignition event tooth number, and when bent axle interrupts generation, detects whether the tooth is event tooth and holds
The corresponding oil spout of row or ignition event.
Further, the controller calculates corresponding oil spout or ignition event tooth number as follows：
Calculate the corresponding angle interval of fuel injection pulsewidth according to the following formula first：
ANGFUEL=tpulse* ω/C；
Angle interval between oil injection event tooth and oil spout initial time calculates according to the following formula：
ANGPRE=(A- [ANGFUEL] %A- (ANGFUEL- [ANGFUEL]))
Wherein [] indicates that, to variable rounding, % expressions take the remainder variable；
It is to be calculated according to the following formula according to the tooth number for obtaining oil spout tooth with top dead centre tooth number：
The angle A NGIGN of igniting initial time to top dead centre is calculated according to the following formula：
ANGIGN=(tdwell+tadv) * ω/C
The angle A NGIGNPRE of ignition event tooth to igniting initial time is calculated according to the following formula：
ANGIGNPRE=(A- [ANGIGNPRE] %A- (ANGIGNPRE- [ANGIGNPRE]))
The tooth number such as following formula of igniting tooth are finally calculated according to top dead centre tooth number：
Wherein A is the number of teeth of gear, and NCIC is the number of teeth in each working cycles of engine；ω is angular speed and has ω
=A*N, unit are：Deg/s, N are the real-time rotating speed of engine, unit r/min；M is top dead centre tooth number；C is that timer is per second
The count value of clock；Tpulse is fuel injection pulsewidth, and tdwell is ignition closed angle, and tadv is Optimum spark advance angle.
Embodiment two.
The pulse disc of the engine of this example is uniformly distributed by 60 teeth, wherein having two tooth vacancies, when pulse disc follows bent axle
When rotation, the permanent magnetic line of force in each tooth cutting sensor causes magnetic flux change and generates alternating voltage, amplitude and fluted disc
It is inversely proportional with the distance of sensor.The square-wave signal that crankshaft-position signal is filtered, is converted into constant amplitude after shaping is sent to
It is current to enter interrupt service routine calculating bent axle when main control chip captures edging trigger signal for the input capture module of ECU
Position and rotating speed judge that hypodontia signal carries out engine synchronization and executes corresponding spray according to event tooth number computed in advance
Oil, ignition event.
Due in one working cycles of four-stroke engine, crank rotation two weeks, therefore think the spray in a working cycles
Oil, ignition event are driven by (60-2) * 2=NCIC events teeth.Trigger when bent axle continuous rotation and then constantly software interrupt
When service routine, system provides current time value when Digital Time-stamp service log enters interrupt routine, and is remembered according to last time
Value calculates the adjacent time interval entered twice between interrupt routine at the time of record, and current time interval is more than the last time
Interval twice when, it is believed that be hypodontia signal, and for transient rotative speed fluctuation be provided with corresponding mechanism for correcting errors.Four cycle engines
The camshaft speed of machine is the half of speed of crankshaft, therefore in each working cycles, crank rotation two encloses and camshaft
One circle of rotation, certain cylinder can be distinguished by camshaft-position signal caused by the hall sensor on camshaft
Compression top center and exhaust top dead center.When camshaft signal and hypodontia signal are detected simultaneously, it is believed that the point is in compression
Dead-centre position is numbered to working as nipper and synchronous Success Flag position is arranged.
The computational methods that oil spout tooth position is set are as shown in the parts Fig. 1, computational methods such as Fig. 3 (2) part for setting of igniting tooth position
It is shown：Fuel injection pulsewidth (timer count value), which is subtracted, according to top dead center position obtains starting oil spout position.Since ECU is in bent axle
(the rising edge saltus step of crankshaft signal) executes oil spout ignition event function when disconnected generation, therefore is sent out with oil injection event in the present invention
A upper positive transition at raw moment, as oil injection event tooth, while recording the oil injection event tooth to the commencement of fuel injection moment along place tooth
Time interval.The crankshaft toothed wheel for lacking 2 teeth for 60, each engine operational cycle have NCIC (this example is 116) a tooth, often
The corresponding rotation angle of one tooth is 6 °, then the relationship of angular velocity of crankshaft and engine speed is：
ω=6*N (1)
Wherein N is the real-time rotating speed of engine, unit r/min；ω is angular speed, and unit is (deg/s).
In the case where considering that engine installs mechanical deflection, it is assumed that top dead centre tooth number is m, the counting of timer each second
Value is C, calculates the corresponding angle interval of fuel injection pulsewidth；
To improve control accuracy, the usually value of negated integer and non-6 integral multiple then continues to count for calculating angle interval
The angle interval calculated between oil injection event tooth and oil spout initial time is calculated using following formula.
If being t by the calculated Optimum spark advance angle of current workingadv, ignition advance angle is subtracted according to top dead center position
Igniting finish time is obtained, then subtracts and igniting start time is obtained by the ignition closed angle that coil time to recharge is calculated.With
Light a fire start time a upper positive transition along place tooth as ignition event tooth, while record ignition event tooth to light a fire start
Time interval between moment.
Then calculate igniting initial time to top dead centre angle and ignition event tooth to light a fire initial time angle,
The position of igniting tooth is calculated according to top dead centre tooth number simultaneously,
When oil spout ignition event is not executed in time, engine fire may be caused.To avoid this case,
Mechanism for correcting errors is may be incorporated into, principle is as follows：Skip events flag bit juxtaposition 1 is added, event is performed rear flag bit and resets.
It in the event of execution, first determines whether flag bit is 1, shows that event is not performed if flag bit non-1, at this time according to current
Tooth and object event tooth calculate the number of teeth missed, and judge whether to need to re-execute the event, by prolonging error event
(generally 1~2 tooth) is executed late, ensure that the integrality of work schedule in cycle.
The control unit of engine (ECU) of independent research has originally been used to carry out oil spout igniting synchronisation control means in this example
Bench test (such as Fig. 3) is idling operation respectively by dynamometer machine by engine stabilizer in randomly selected two operating modes
(throttle opening 30%, rotating speed are for (closed throttle, idling speed 1000rpm) and moderate rotation and load condition
2000rpm), it is measured respectively with MSO2014B mixed signal oscillographs and obtains the 4th cylinder crankshaft camshaft location letter under two kinds of operating modes
Number and oil spout light a fire driving control signal.Test nearest top dead center position and edentulous site after measuring hypodontia first before
Differential seat angle is 108 ° (i.e. 18 teeth), can learn that the 4th cylinder compression stroke top dead centre is the 18th tooth (for calculating igniting tooth),
Exhaust stroke top dead center is the 106th tooth (for calculating oil spout tooth).By ATI VISION calibration softwares to the inside ECU in experiment
Parameter is monitored on-line to obtain：Monitoring obtains fuel injection pulsewidth as 4ms under idling operation, and ignition closed angle 5.9ms, igniting carries
Anterior angle is 15 °.Between 15 and 16 teeth, Range compress stroke TDC is about that 2.5 teeth are (right for the position that ignition signal terminates
It is 15 ° to answer angle), the time to recharge (ignition closed angle) of ignition coil is about 6ms, and the fuel injection pulsewidth time is about 4ms, with reality
The built-in variable value of monitoring is consistent, and end of injection position matches with exhaust stroke top dead center, further illustrates sequential export
Reasonability；Throttle opening 30%, it is 4.9ms that monitoring, which obtains fuel injection pulsewidth, under rotating speed 2000rpm operating modes, and ignition closed angle is
5.9ms, ignition advance angle are 24 °.As shown, the position that ignition signal terminates is between 14 teeth, on Range compress stroke
Stop is about 4 teeth (corresponding angle be 24 °), and the time to recharge (ignition closed angle) of ignition coil is about 6ms, when fuel injection pulsewidth
Between about 5ms, it is consistent with the built-in variable value of actual monitoring, and end of injection position matches with exhaust stroke top dead center.
It analyzes known to rack experimental result：The quantitative and timing computational methods energy of designed oil spout, igniting in the present invention
Enough generate accurately and effectively controls signal, and in the entire experiment process, engine overall operation is steady, no pinking, catch fire etc. it is existing
As generating.
The foregoing is merely the preferred embodiment of the present invention, and it cannot be said that the specific implementation of the present invention is confined to these and says
It is bright.It, without departing from the inventive concept of the premise, can be with for the related technical personnel of the technical field of the invention
Several simple deduction or replace, wherein any modification, equivalent replacement, improvement and so on are made, should be included in the present invention's
Within protection domain.
Claims (2)
1. a kind of engine ignitor comprising controller and actuator, the actuator are used for the order according to controller
Execute igniting, which is characterized in that the controller is used for true according to the oil spout ignition duration and degree of advance of engine
At the time of determining oil spout and execute igniting, and corresponding oil spout or ignition event tooth number are calculated accordingly, and occur when bent axle interrupts
When, detect whether the tooth is event tooth and executes corresponding oil spout or ignition event.
2. device as described in claim 1, which is characterized in that the controller calculates corresponding oil spout as follows
Or ignition event tooth number：
Calculate the corresponding angle interval of fuel injection pulsewidth according to the following formula first：
ANGFUEL=tpulse*ω/C；
Angle interval between oil injection event tooth and oil spout initial time calculates according to the following formula：
ANGPRE=(A- [ANGFUEL] %A- (ANGFUEL-[ANGFUEL]))
Wherein [] indicates that, to variable rounding, % expressions take the remainder variable；
It is to be calculated according to the following formula according to the tooth number for obtaining oil spout tooth with top dead centre tooth number：
Angle A NG of the igniting initial time to top dead centreIGNIt calculates according to the following formula：
ANGIGN=(tdwell+tadv)*ω/C
Angle A NG of the ignition event tooth to igniting initial timeIGNPREIt calculates according to the following formula：
ANGIGNPRE=(A- [ANGIGNPRE] %A- (ANGIGNPRE-[ANGIGNPRE]))
The tooth number such as following formula of igniting tooth are finally calculated according to top dead centre tooth number：
Wherein A is the number of teeth of gear, and NCIC is the number of teeth in each working cycles of engine；ω is angular speed and has ω=A*
N, unit are：Deg/s, N are the real-time rotating speed of engine, unit r/min；M is top dead centre tooth number；C is timer each second
Count value；tpulseFor fuel injection pulsewidth, tdwellFor ignition closed angle, tadvFor ignition advance angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711125837.9A CN108386289A (en) | 2017-11-15 | 2017-11-15 | A kind of engine ignitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711125837.9A CN108386289A (en) | 2017-11-15 | 2017-11-15 | A kind of engine ignitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108386289A true CN108386289A (en) | 2018-08-10 |
Family
ID=63076916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711125837.9A Withdrawn CN108386289A (en) | 2017-11-15 | 2017-11-15 | A kind of engine ignitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108386289A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482788A (en) * | 2021-07-30 | 2021-10-08 | 青驭汽车科技(太仓)有限公司 | Engine fuel multiple injection control method |
| CN113756961A (en) * | 2021-09-16 | 2021-12-07 | 重庆隆鑫通航发动机制造有限公司 | Starting control method and system for universal aircraft engine starting integrated motor |
| CN113933060A (en) * | 2021-09-08 | 2022-01-14 | 东风越野车有限公司 | Method and equipment for measuring zero reference angle of diesel engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4365602A (en) * | 1979-12-21 | 1982-12-28 | Volkswagenwerk Aktiengesellschaft | Timing signal generator for ignition and fuel injection systems in a 4-stroke internal combustion engine |
| WO2002008596A1 (en) * | 2000-07-26 | 2002-01-31 | Siemens Aktiengesellschaft | Method for synchronizing an internal combustion engine |
| CN101968009A (en) * | 2010-09-29 | 2011-02-09 | 镇江恒驰科技有限公司 | Phase detection method of electric control engine |
| CN102042107A (en) * | 2009-10-09 | 2011-05-04 | 光阳工业股份有限公司 | Control method for engine |
| CN105257420A (en) * | 2015-09-28 | 2016-01-20 | 奇瑞汽车股份有限公司 | Realization method for limp-home function based on phase judgment |
-
2017
- 2017-11-15 CN CN201711125837.9A patent/CN108386289A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4365602A (en) * | 1979-12-21 | 1982-12-28 | Volkswagenwerk Aktiengesellschaft | Timing signal generator for ignition and fuel injection systems in a 4-stroke internal combustion engine |
| WO2002008596A1 (en) * | 2000-07-26 | 2002-01-31 | Siemens Aktiengesellschaft | Method for synchronizing an internal combustion engine |
| CN102042107A (en) * | 2009-10-09 | 2011-05-04 | 光阳工业股份有限公司 | Control method for engine |
| CN101968009A (en) * | 2010-09-29 | 2011-02-09 | 镇江恒驰科技有限公司 | Phase detection method of electric control engine |
| CN105257420A (en) * | 2015-09-28 | 2016-01-20 | 奇瑞汽车股份有限公司 | Realization method for limp-home function based on phase judgment |
Non-Patent Citations (1)
| Title |
|---|
| 解涛: "曲轴凸轮轴信号控制策略研究", 《农业装备与车辆工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482788A (en) * | 2021-07-30 | 2021-10-08 | 青驭汽车科技(太仓)有限公司 | Engine fuel multiple injection control method |
| CN113933060A (en) * | 2021-09-08 | 2022-01-14 | 东风越野车有限公司 | Method and equipment for measuring zero reference angle of diesel engine |
| CN113933060B (en) * | 2021-09-08 | 2023-11-17 | 东风越野车有限公司 | Method and equipment for measuring zero reference angle of diesel engine |
| CN113756961A (en) * | 2021-09-16 | 2021-12-07 | 重庆隆鑫通航发动机制造有限公司 | Starting control method and system for universal aircraft engine starting integrated motor |
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Application publication date: 20180810 |