CN109139330A - Engine with supercharger ignition control method and engine with supercharger Iganition control system - Google Patents

Engine with supercharger ignition control method and engine with supercharger Iganition control system Download PDF

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Publication number
CN109139330A
CN109139330A CN201710506653.0A CN201710506653A CN109139330A CN 109139330 A CN109139330 A CN 109139330A CN 201710506653 A CN201710506653 A CN 201710506653A CN 109139330 A CN109139330 A CN 109139330A
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CN
China
Prior art keywords
engine
ignition
angle
load
cylinder pressure
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Pending
Application number
CN201710506653.0A
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Chinese (zh)
Inventor
陈琛
刘清强
王金龙
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SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center Co Ltd
Original Assignee
SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAIC General Motors Corp Ltd, Pan Asia Technical Automotive Center Co Ltd filed Critical SAIC General Motors Corp Ltd
Priority to CN201710506653.0A priority Critical patent/CN109139330A/en
Publication of CN109139330A publication Critical patent/CN109139330A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02PIGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00Advancing or retarding ignition; Control therefor
    • F02P5/04Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145Advancing 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
    • F02P5/15Digital data processing

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Ignition Timing (AREA)

Abstract

The invention discloses a kind of engine with supercharger ignition control method and engine with supercharger Iganition control systems.Engine with supercharger ignition control method is the following steps are included: recommendation first angle of ignition of the first engine of record in each load and cylinder pressure;Cylinder pressure of second engine under multiple load conditions is measured, recommendation first angle of ignition of first engine in identical load and cylinder pressure is searched according to the load of the second engine and measured cylinder pressure;Recommendation second angle of ignition of second engine in identical load and cylinder pressure is set with reference to first angle of ignition of recommendation found.Engine with supercharger Iganition control system includes: storing mechanism, measuring mechanism and lookup mechanism.The recommendation angle of ignition of engine with supercharger to be calibrated can be set according to the present invention with reference to the angle of ignition of the similar engine in specific load and cylinder pressure, so that the angle of ignition for simplifying engine with supercharger matches work.

Description

Engine with supercharger ignition control method and engine with supercharger Iganition control system
Technical field
The present invention relates to engine electronic control system fields, in particular to a kind of engine with supercharger ignition control method And the engine with supercharger Iganition control system using such engine with supercharger ignition control method.
Background technique
Modern gasoline machine development trend is the turbocharger that small displacement engine matches high supercharging pressure level, is met increasingly with this The oil consumption of raising and emission request.In the rack development process of gasoline engine, ignition control is critically important a part, it is necessary to really It protects and lights compressed air-fuel mixture at the accurate moment, and cause stable burning.Accurate time of ignition can be with Bring the inhibition and clean exhaust of maximum output power, optimal fuel economy, combustion knock.Modern Engine pipe Reason system generallys use electronic control, i.e. centered on electronic control unit (ECU), ECU receiving comes from engine management system The various information of sensor issue control signal to each actuator after handling, analyzing.In Engine Matching work, It is exactly to be tested by various matchings, each parameter of ECU is configured, to reaches the target of Engine Matching work.
It is well known that time of ignition is related to the best input power and optimum oil consumption of engine, also it is directly related to non- The frequency of normal combustion pinking and the raw emissions of engine, so the angle of ignition on engine pedestal within the scope of full load Sweeping an experiment just becomes most important.Therefore angle of ignition MAP chart and the control of the relevant feedback of the angle of ignition are Engine Matching mistakes An essential working link in journey.In engine when Smaller load, optimal ignition angle is found to obtain best torque, in When big negative electrical charge, optimal ignition angle is found to ensure no pinking, when engine ignition, to find optimal ignition angle to ensure The light-off time of catalyst;Therefore the selection of the angle of ignition is a very long and complicated process, the matching of angle of ignition control is one The extremely complex work of item, needs using a large amount of specific purpose tool and equipment, such as the spark plug with combustion pressure sensor, specially Pinking matching controller and knock measurement analyzer etc..
Gasoline engine relies on plug ignition come gaseous mixture in the cylinder that ignites, thus to provide power for automobile.Ignition function Realize the determination for mainly relying on time of ignition.Time of ignition depends primarily on the variation of engine speed and load.It depends on Engine speed be because are as follows: if air-fuel ratio is certain, the time needed for the gaseous mixture completely burned of certain charge is certain;Cause This, when engine speed increases, time of ignition (timing) should be to Forward, i.e. advanced ignition.Depending on load be due to: mixing When gas is diluter, along with the reduction of load coefficient, the percentage of residual gas is improved, and the density of cylinder charge reduces;And these Factor results in ignition-delay period lengthening and mixture combustion rate and reduces, and therefore, time of ignition must shift to an earlier date.When changing igniting Carve the variation that igniting can be made to adapt to engine speed and load.In simple ignition system, ignition timing is mechanical by one Centrifugal advance mechanism and a vacuum control mechanism are adjusted.Intake depression precision reflects the load shape of engine Condition.
The time of ignition of gasoline engine is mainly obtained by platform experiment, in middle Smaller load, when needing to find optimal torque Corresponding minimum ignition angle;The big load in, due to the increase with the angle of ignition, enhancing is inclined in the pinking of engine, so very Just and pinking occurs for multi-loading point in not up to optimal torque, so the optimal angle of ignition of the load is often scheduled on pinking The corresponding minimum ignition angle of critical point.In previous angle of ignition calibration, the optimal angle of ignition is chosen in the interior experiment of full load range It is the very big work of a project amount, and the selection that closes on of pinking often has the subjectivity of very strong engineering.
The component part of the angle of ignition is broadly divided into basic ignition angle, compensates the angle of ignition and three, angle part is moved back in pinking.Substantially The angle of ignition depends on the operating condition (revolving speed and load) of engine, and the compensation angle of ignition is divided into the intake air temperature compensation angle of ignition, water The angle of ignition and the air-fuel ratio compensation angle of ignition are repaid in temperature compensation.When pinking occurs in load big during engine is run to, and it will appear inhibition Angle is moved back in pinking.When automobile starting or when being in idling operation, there are also corresponding starting ignition angle and the idling operation angle of ignition, come Meet the stability of automobile basic starting performance and idling.
At present in industry when demarcating the engine optimum angle of ignition, the experience of engineer is generally relied on, it is small within the engine Load chooses the minimum ignition advance angle for obtaining optimal torque, and the big load in, with the increase of igniting, engine is not reaching Pinking will first occur when to optimal torque, thus in big load when, what engineer chose is the minimum ignition of pinking point of proximity Angle.Since the point that full engine load needs to test is very more, so the calibration engine optimum angle of ignition is one relatively difficult Process.
Summary of the invention
The present invention proposes a kind of engine with supercharger ignition control method, can simplify the angle of ignition matching of engine with supercharger Work.
The engine with supercharger ignition control method proposed on one side according to the present invention, comprising the following steps: record first Recommendation first angle of ignition of the engine in each load and cylinder pressure;The second engine is measured under multiple load conditions Cylinder pressure searches the first engine in identical load and cylinder pressure according to the load of the second engine and measured cylinder pressure First angle of ignition of recommendation;The second engine is set in identical load and cylinder with reference to first angle of ignition of recommendation found Second angle of ignition of recommendation in the case of pressure.
The engine with supercharger Iganition control system proposed according to one embodiment of the present invention, comprising: storing mechanism is used for Store recommendation first angle of ignition of first engine in each load and cylinder pressure;Measuring mechanism, for measuring the second hair Cylinder pressure of the motivation under multiple load conditions;Mechanism is searched, for looking into according to the load and measured cylinder pressure of the second engine Look for recommendation first angle of ignition of first engine in identical load and cylinder pressure;Output mechanism is searched for reference To first angle of ignition of recommendation export second angle of ignition of recommendation of the second engine.
The beneficial effects of the present invention are: being arranged with reference to the angle of ignition of the similar engine in specific load and cylinder pressure The recommendation angle of ignition of engine with supercharger to be calibrated, so that the angle of ignition for simplifying engine with supercharger matches work.
Detailed description of the invention
It is explained with reference to the disclosure.It is to be appreciated that these attached drawings are intended solely for illustrative purposes, and It is not intended to limit the scope of protection of the present invention.In figure:
Fig. 1 schematically illustrates engine with supercharger Iganition control system according to one embodiment of the present invention.
Specific embodiment
According to an embodiment of the present invention, engine with supercharger ignition control method is the following steps are included: the first hair of record Recommendation first angle of ignition of the motivation in each load and cylinder pressure;Measure cylinder of second engine under multiple load conditions Pressure, according to the load of the second engine and measured cylinder pressure the first engine of lookup in identical load and cylinder pressure Recommend first angle of ignition;The second engine is set in identical load and cylinder pressure with reference to first angle of ignition of recommendation found In the case of second angle of ignition of recommendation, such as first angle of ignition of recommendation found is provided as the second engine identical Load and cylinder pressure in the case of second angle of ignition of recommendation.Using method according to the invention it is possible to simplify engine with supercharger The angle of ignition matches work, or even realizes the automatic Calibration engine optimum angle of ignition.In engine is run to when Smaller load, The combustion case in cylinder is detected by Combustion tester, and is this combustion coefficient of CA50, CA50 by combustion case Quantitative yield I.e. in cylinder when combustion gas mixture combustion 50%, the angle of engine crankshaft corner.According to engineering experience, CA50 can be arranged The optimal torque point being under the load at measured engine is carried out between 7-9, thus to obtain the optimal angle of ignition under the load. When big load during engine is run to, combustion knock tendency increases, and based on according to method of the invention, can mitigate work significantly Workload of the Cheng Shi when demarcating the angle of ignition, can also to avoid different engineers when demarcating the angle of ignition caused by artificially miss Difference.
According to an embodiment of the present invention, recommending first angle of ignition is the igniting that the first engine is under pinking critical point Angle.
According to an embodiment of the present invention, recommending first angle of ignition is that the first engine is in pinking under big load condition The angle of ignition under critical point.
According to an embodiment of the present invention, recommendation first angle of ignition of first engine in each load and cylinder pressure Record is in the database.According to the experience of accumulation, the various threshold values judgment criteria for judging engine and pinking whether occurring are established Database.When demarcating to new engine, the angle of ignition is continuously increased to approach pinking threshold values, knock system can basis The cylinder of acquisition presses signal, and the cylinder intercepted in one section of crank angle from compression after point presses signal, carries out high pass filter to it Wave;Mathematical treatment, the fluctuation amplitude to be burnt, according to the engine combustion handled are carried out to the signal after the completion of filtering again Fluctuation amplitude signal, searches the pinking threshold values judgment criteria of similar engine in the database, to judge that the angle of ignition is It is no to have touched the pinking point of proximity of engine under which loading, to obtain the optimal angle of ignition under the load.
According to an embodiment of the present invention, the first engine and the second engine are similar engine, that is to say, that structure Identical or number of cylinders is identical or engine displacement is identical.
According to an embodiment of the present invention, the cylinder pressure of the second engine by with combustion pressure sensor spark plug come Measurement.
The engine with supercharger Iganition control system proposed according to an embodiment of the present invention, using according to above-mentioned The engine with supercharger ignition control method for one or more embodiments of anticipating obtains second angle of ignition of recommendation of the second engine, Therefore the technical characteristic having and the technical effect having correspond to the description of front.
It is schematically shown according to an embodiment of the present invention according to Fig. 1, wherein engine with supercharger Iganition control system 10 It include: storing mechanism 1, for storing recommendation first angle of ignition of first engine in each load and cylinder pressure;Measurement Mechanism 2, for measuring cylinder pressure of second engine under multiple load conditions;Mechanism 3 is searched, for according to the second engine Load and measured cylinder pressure search recommendation first angle of ignition of first engine in identical load and cylinder pressure;Output Mechanism 4, for exporting second angle of ignition of recommendation as the second engine with reference to first angle of ignition of recommendation found.
According to an embodiment of the present invention, engine with supercharger Iganition control system 10 is integrated in automobile experiment rack, Be conducive to the integrated of experimental provision.
Technical scope of the invention is not limited solely to the content in above description, and those skilled in the art can not take off Under the premise of from technical thought of the invention, many variations and modifications are carried out to above-described embodiment, and these deformations and modification should all In belonging to the scope of protection of the present invention.

Claims (10)

1. engine with supercharger ignition control method, which comprises the following steps:
Record recommendation first angle of ignition of first engine in each load and cylinder pressure;
Cylinder pressure of second engine under multiple load conditions is measured, is looked into according to the load of the second engine and measured cylinder pressure Look for recommendation first angle of ignition of first engine in identical load and cylinder pressure;
Second engine pushing away in identical load and cylinder pressure is set with reference to first angle of ignition of recommendation found Recommend second angle of ignition.
2. the method according to claim 1, wherein recommending first angle of ignition is that the first engine faces in pinking The angle of ignition under boundary's point.
3. according to the method described in claim 2, it is characterized in that, recommending first angle of ignition is the first engine in big load feelings The angle of ignition under condition under pinking critical point.
4. the method according to claim 1, wherein the first engine pushing away in each load and cylinder pressure Recommend first angle of ignition record in the database.
5. the method according to claim 1, wherein the first engine and the second engine are similar engine.
6. according to the method described in claim 5, it is characterized in that, the first engine and the second engine structure is identical or cylinder The identical or engine displacement of number is identical.
7. the method according to claim 1, wherein the cylinder pressure of the second engine with combustion pressure by sensing The spark plug of device measures.
8. engine with supercharger Iganition control system (10), which is characterized in that using according to claim 1 to described in Arbitrary Term in 7 Method obtain the second engine second angle of ignition of recommendation.
9. engine with supercharger Iganition control system (10) according to claim 8 characterized by comprising
Storing mechanism (1), for storing recommendation first angle of ignition of first engine in each load and cylinder pressure;
Measuring mechanism (2), for measuring cylinder pressure of second engine under multiple load conditions;
It searches mechanism (3), for searching the first engine identical according to the load and measured cylinder pressure of the second engine First angle of ignition of recommendation in the case of load and cylinder pressure;
Output mechanism (4), for exporting the recommendation second point of the second engine with reference to first angle of ignition of recommendation found Fiery angle.
10. engine with supercharger Iganition control system (10) according to claim 8, which is characterized in that it is integrated in automobile In experimental stand.
CN201710506653.0A 2017-06-28 2017-06-28 Engine with supercharger ignition control method and engine with supercharger Iganition control system Pending CN109139330A (en)

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CN201710506653.0A CN109139330A (en) 2017-06-28 2017-06-28 Engine with supercharger ignition control method and engine with supercharger Iganition control system

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CN201710506653.0A CN109139330A (en) 2017-06-28 2017-06-28 Engine with supercharger ignition control method and engine with supercharger Iganition control system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110987442A (en) * 2019-12-30 2020-04-10 宁波洁程汽车科技有限公司 Calibration method for performance of engine pedestal of extended range electric automobile
CN113738555A (en) * 2021-08-20 2021-12-03 合众新能源汽车有限公司 Ignition angle correction method and device

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CN1601072A (en) * 2003-09-27 2005-03-30 厦门信源交通器材股份有限公司 Method for raising efficiency of ignition of engine
JP2009103054A (en) * 2007-10-23 2009-05-14 Toyota Motor Corp Control device for internal combustion engine
CN101725448A (en) * 2008-10-31 2010-06-09 比亚迪股份有限公司 Detonation calibrating method of engine
CN102966445A (en) * 2011-08-31 2013-03-13 福特环球技术公司 Method and internal combustion engine for a supercharged internal combustion engine

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US4459808A (en) * 1981-02-19 1984-07-17 Ab Volvo System for controlling the charge air pressure in a turbo-charged combustion engine
US4496286A (en) * 1983-07-18 1985-01-29 J-W Operating Company Control system for engine-driven compressor unit and method of operation thereof
US4612900A (en) * 1984-02-24 1986-09-23 Mitsubishi Denki Kabushiki Kaisha Engine operating parameter control apparatus
US4646522A (en) * 1984-07-04 1987-03-03 Mazda Motor Corporation Knock control system for supercharged engine
EP0370594A1 (en) * 1988-11-19 1990-05-30 Ford Motor Company Limited Engine management system
US5116356A (en) * 1990-04-04 1992-05-26 Mitsubishi Denki Kabushiki Kaisha Control apparatus for an internal combustion engine
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110987442A (en) * 2019-12-30 2020-04-10 宁波洁程汽车科技有限公司 Calibration method for performance of engine pedestal of extended range electric automobile
CN113738555A (en) * 2021-08-20 2021-12-03 合众新能源汽车有限公司 Ignition angle correction method and device

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Application publication date: 20190104