CN103306837A - Method for preventing the premature ignition of a fuel-air mixture within a cylinder of an internal combustion engine - Google Patents
Method for preventing the premature ignition of a fuel-air mixture within a cylinder of an internal combustion engine Download PDFInfo
- Publication number
- CN103306837A CN103306837A CN2013100806742A CN201310080674A CN103306837A CN 103306837 A CN103306837 A CN 103306837A CN 2013100806742 A CN2013100806742 A CN 2013100806742A CN 201310080674 A CN201310080674 A CN 201310080674A CN 103306837 A CN103306837 A CN 103306837A
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- Prior art keywords
- burning
- fuel
- combustion engine
- numerical value
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0611—Fuel type, fuel composition or fuel quality
- F02D2200/0612—Fuel type, fuel composition or fuel quality determined by estimation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/025—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining temperatures inside the cylinder, e.g. combustion temperatures
- F02D35/026—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining temperatures inside the cylinder, e.g. combustion temperatures using an estimation
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to a method for preventing the premature ignition of a fuel-air mixture within a cylinder of an internal combustion engine. The method involves determining measure of risk of premature ignition of a portion of at least one combustion chamber for current or following operating cycles based on one or more parameters of the internal combustion engine. Measurement of the surface temperature is at least partly determined for the measure of the risk of the premature ignition for a subsequent or later cycle and compared with a predetermined limit value. Alternation in an operating parameter of a drive train is initiated for non-compliance with a limit value for a preceding cycle in current or following working phase.
Description
Technical field
The present invention relates to a kind of method for stoping fuel air mixture in cylinder of internal-combustion engine chamber pre-burning.
Background technique
Pre-burning is interpreted as a process, and wherein fuel air mixture especially in the petrol engine with high compression ratio or supercharging, pre-burning uncontrollable and that shift to an earlier date just do not occur before the ignition spark that is produced by ignition system occurring before compression stage finishes.Because the rising of the temperature and pressure that pre-burning produces aggravates by still unclosed compression in the firing chamber.Extreme temperature and pressure value in internal combustion chamber will finally cause the damage of engine component.
DE102008038102A1 is known by patent documentation, in order to stop fuel air mixture pre-burning in the cylinder chamber of the internal-combustion engine with high compression ratio of petrol engine working method, for each clutch release slave cylinder is measured or definite current cylinder interior force value.At this, cylinder pressure is determined by the angular velocity curve of the bent axle of the internal-combustion engine that detects or by pressure transducer.By the cylinder interior pressure that in current work cycle, calculates, can determine the burning position of centre of gravity of each cylinder, expected pre-burning tendency in the work cycle after calculating thus.
Patent documentation DE102010064186A1 has described a kind of for process the not method and apparatus of control burning at internal-combustion engine, method is to determine the quantity of the not control burning detected and compare with threshold value in monitoring window, if wherein surpass the temperature that threshold value then reduces combustion chambers of internal combustion engines.The shortcoming of this method is, just can be detected when pre-burning occurring actual, therefore can only stop pre-burning in follow-up work cycle.The motor that can not stop thus to cause owing to the pre-burning that has occurred damages.
Summary of the invention
Technical problem to be solved by this invention is, stops fuel air mixture pre-burning in the cylinder of internal-combustion engine chamber, farthest, preferably fully stops pre-burning thus before pre-burning forms.
Described technical problem is solved in the method for cylinder of internal-combustion engine chamber pre-burning for the prevention fuel air mixture by a kind of, wherein in according to method of the present invention, one or more parameters according to internal-combustion engine, determine the risk numerical value of the local at least pre-burning tendency of at least one internal combustion chamber for work cycle current or afterwards, wherein, the numerical value of determining surface temperature is as being used for back to back (preferentially) or the risk numerical value that is inclined to of the pre-burning of the work cycle in evening, and compare with default limiting value, if observe the limiting value of this work cycle before being used for, then at least one Operational Limits to power assembly changes at least one times in current (preferably) or follow-up working stage.
Described internal-combustion engine is petrol engine or diesel engine preferably.A work cycle of internal-combustion engine is interpreted as the work cycle of cylinder.For example in four stroke engine, work cycle is made of twice rotation of four working stages and bent axle.Described definite especially (preferably) can be to calculate or measure.
Advantage according to method of the present invention is have the pre-burning of threat can be determined and to identify before forming.Can farthest stop pre-burning and therefore can avoid damaging motor by the Operational Limits that changes in the power assembly.Another advantage is, for the numerical value of determining surface temperature can be considered the different parameters that has been used for other purposes.The measure that can cause the Operational Limits of power assembly to change also is a lot.Independent measure and the combination of a plurality of measures can both stop pre-burning.Particularly in petrol engine, supercharging and/or compression ratio can be improved by the present invention, and therefore also fuel consumption can be reduced.If calculated the numerical value of surface temperature, just then do not need the extra measuring system for detection of pre-burning by technological scheme of the present invention.
A kind of preferred implementing form of this method, wherein belong to internal-combustion engine parameter be to determine the rotating speed of internal-combustion engine of period and integrated, the fuel consumption of load, firing time, ambient temperature, external pressure, humidity of the air, cooling water temperature, oil temperature, fuel temperature, fuel pressure, failed storage.Can determine in several ways these parameters.Preferably (directly or indirectly) measure a plurality of parameters, such as fuel consumption, firing time, ambient temperature, external pressure, humidity of the air.Can calculate rotating speed and load integrated.Particularly preferably be, consider that all parameters are to determine the numerical value of surface temperature.But only consider that some parameters also are enough, preferably consider rotating speed and integrated, the time of ignition of load and fuel quality.
In a kind of particularly preferred form of implementation, fuel quality belongs to the Operational Limits of internal-combustion engine.To fuel quality really usual practice as realizing by the assessment to the operation of pinking controlling device: the pinking controlling device comprises detonation sensor (solid-borne noise sound sensor).Study the typical dither component in pinking in the signal of this detonation sensor by electronic filter and DSP digital signal processor.If detonation sensor is recorded to the pinking of motor, then automatically regulate by this way time of ignition, until determine no longer to occur the pinking noise.Can infer fuel quality by the assessment to the pinking controlling device.
The Operational Limits that belongs to internal-combustion engine about the information that pre-burning occurs.This information preferably draws from the assessment to the pre-burning authentication function engine controller.The pre-burning authentication function is a kind of function that can accurately simulate the pre-burning tendency of cylinder.For example can adopt two functions that are used for identification pre-burning.One is so-called the second pinking window, and another is the assessment of the engine speed (HMD) to high-res.Common pinking function can be identified special Vibration Cylinder Body and it is attributed to a certain cylinder, needs the specific identification window for single cylinder for this reason.The length of window is for example determined (ignition angle is depended in the burning of common pinking) according to rotating speed, engine load and ignition angle on engine test stand.
The second recognition window is positioned at the front of the first recognition window.The second pinking window the time engrave under usual conditions and knocking combustion can not occur because the time between ignition angle and inception of knock is very short.Yet when detonation signal appears in detonation sensor, there is pre-burning.
HMD analyzes engine speed.Have vibration in this signal, the moment of torsion that cylinder cycle ground produces is depended in this vibration.Raise if the rotating speed early of not expectation occurs, then have pre-burning.
In addition, described method can be implemented like this with practical way, namely changes the Operational Limits of power assembly by implementing one or more following measures.These measures for example are short-terms and change chronically inflation or air inlet degree and load, change discharge time, shifter cylinder, change ignition angle, change fuel-air ratio, change camshaft and locking or postpone shift process.Implement one of these measures and can cause the Operational Limits of power assembly to be changed by this way, so that pre-burning is prevented from.Yet particularly importantly change fuel-air ratio, because can affect especially economically thus the operation of motor.Shifter cylinder and locking or delay shift process are especially effectively to stop at once the measure of pre-burning, and needn't implement other follow-up measures.
According to the present invention, by the numerical value of controller for the assessment of engine parameter and the surface temperature that next draws based on computation model, and obtain the limiting value of pre-burning risk proneness.
According to the present invention, the numerical value of surface temperature or measure surface temperature or the radiation power of at least a portion that is at least one firing chamber.Thus, can determine whole numerical value of the heat exchange of at least a portion of at least one firing chamber and surrounding environment, and as the standard of cylinder pre-burning tendency.
In a kind of preferred form of implementation, in described method, by with the numerical value of the surface temperature risk numerical value as the pre-burning tendency that is used for back to back work cycle, and compare with default limiting value, thereby be the risk numerical value of the pre-burning tendency of current work cycle at least a portion of determining at least one firing chamber according to one or more parameters of internal-combustion engine.If observe the limiting value that this is used for work cycle before, then in the work at present stage, change at least one Operational Limits of power assembly.Therefore, in the work at present stage of motor, avoided the pre-burning risk.Thus in order pre-burning not occur, and continue to monitor surface temperature.
Internal-combustion engine has controller usually, its control, the function of regulating and monitoring motor.This controller can will be stored in the storage of engine controller as program control function according to method of the present invention effectively.
A kind of particularly advantageous device is, this device is installed in the Motor Vehicle, and the motor of this Motor Vehicle comprises engine controller, has program stored therein in the storage of controller, and at least a portion of this program can be implemented according to method of the present invention.
Motor Vehicle can be the wheeled vehicle of trackless.
Description of drawings
Set forth other purposes of the present invention, feature and favourable application possibility by embodiment's following description and with reference to accompanying drawing.In the accompanying drawings:
Fig. 1 illustrates the schematic diagram according to the form of implementation of method of the present invention, and
Fig. 2 illustrates the mode of execution according to automobile of the present invention, and it has adopted the method for implementing as function in controller.
Embodiment
Fig. 1 illustrates the schematic diagram according to the inventive method.In step 1, determined the numerical value of surface temperature by the parameter of internal-combustion engine 8.The limiting value of determined result and pre-burning tendency compares, and verifies in step 2, whether observes this limiting value.If observe limiting value 5 then step 4 end.If do not observe limiting value 6 then in step 3, take measures, reduce thus the risk of pre-burning or stop pre-burning fully.
Fig. 2 illustrates the partial schematic diagram according to vehicle 9 of the present invention, and described vehicle forwardly zone is dissectd.In the front area of vehicle 9, there are controller 7 and internal-combustion engine 8.Be implemented as function in controller 7 according to method of the present invention.By controller 7 implementing measure in power assembly, finally avoid pre-burning by this measure.
List of numerals
1. determine the numerical value of surface temperature
2. judge: observe limiting value
3. for the measure of pre-burning
4. finish
5. be
6. no
7. engine controller
8. internal-combustion engine
9. vehicle
Claims (10)
1. one kind is used for stoping fuel air mixture in the method for cylinder of internal-combustion engine chamber pre-burning, wherein according to one or more parameters of internal-combustion engine, determine the risk numerical value of the local at least pre-burning tendency of at least one internal combustion chamber for work cycle current or afterwards, it is characterized in that, determine that the numerical value of surface temperature is as the risk numerical value that is used for pre-burning tendency back to back or the work cycle in evening, and compare with default limiting value, if observe the limiting value that this is used for work cycle before, then at least one Operational Limits to power assembly changes at least one times in current or follow-up working stage.
2. in accordance with the method for claim 1, it is characterized in that, the parameter of described internal-combustion engine comprises:
-determine rotating speed and the load of the internal-combustion engine of period,
-fuel consumption,
-firing time,
-ambient temperature,
-external pressure,
-humidity of the air,
-cooling water temperature,
-oil temperature,
-fuel temperature,
-fuel pressure,
-failed storage.
3. according to claim 1 or 2 described methods, it is characterized in that, one of described parameter or described parameter are fuel qualities, determine described fuel quality by the assessment to the operation of pinking controlling device.
4. according to claim 1 or 2 described methods, it is characterized in that, one of described parameter or described parameter are about the information of pre-burning occurs, in engine controller by described information is determined in the assessment of pre-burning authentication function.
5. according to claim 1 or 2 described methods, it is characterized in that, by implementing one or more following measures, change the Operational Limits of power assembly:
-short-term and chronically reduction inflation or air inlet degree and load,
-change discharge time,
-shifter cylinder,
-change ignition angle,
-change fuel-air ratio,
-change camshaft,
-locking or delay shift process.
6. according to the described method of one of claim 1 to 5, it is characterized in that, by the numerical value of controller for the assessment of engine parameter and the surface temperature that next draws based on computation model, and obtain the limiting value of pre-burning risk proneness.
7. according to the described method of one of claim 1 to 6, it is characterized in that the numerical value of described surface temperature or measure surface temperature or the radiation power of at least a portion that is at least one firing chamber.
8. according to the described method of one of claim 1 to 7, wherein determine the risk numerical value of the local at least pre-burning tendency of at least one firing chamber for the work at present circulation, it is characterized in that, the described work cycle in evening is the work cycle that directly follows closely after described work at present circulation.
9. an engine controller is characterized in that, has program stored therein in the storage of engine controller, can implement at least a portion of this program such as the method according to the described feature of one of claim 1 to 8 or Feature Combination.
10. a Motor Vehicle is characterized in that, described Motor Vehicle comprise be arranged in this Motor Vehicle according to engine controller claimed in claim 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012005227.8 | 2012-03-15 | ||
| DE102012005227A DE102012005227A1 (en) | 2012-03-15 | 2012-03-15 | A method for preventing a pre-ignition of a fuel-air mixture in a cylinder chamber of an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103306837A true CN103306837A (en) | 2013-09-18 |
| CN103306837B CN103306837B (en) | 2017-04-12 |
Family
ID=47709959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310080674.2A Active CN103306837B (en) | 2012-03-15 | 2013-03-14 | Method for preventing the premature ignition of a fuel-air mixture within a cylinder of an internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2639433B1 (en) |
| CN (1) | CN103306837B (en) |
| DE (1) | DE102012005227A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386885A (en) * | 2014-08-21 | 2016-03-09 | 通用汽车环球科技运作有限责任公司 | Engine emission control system including combustion chamber temperature monitoring system |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6353664B2 (en) | 2014-02-20 | 2018-07-04 | 日立オートモティブシステムズ株式会社 | Engine control device |
| US11034912B2 (en) | 2014-04-29 | 2021-06-15 | Infineum International Limited | Lubricating oil compositions |
| DE102014222527A1 (en) * | 2014-11-05 | 2016-05-12 | Robert Bosch Gmbh | Method and device for avoiding uncontrolled burns in an internal combustion engine |
| DE102016221448B4 (en) * | 2016-11-02 | 2018-10-18 | Bayerische Motoren Werke Aktiengesellschaft | Method for reducing pre-ignition |
| DE102021116045A1 (en) | 2021-06-22 | 2022-12-22 | Bayerische Motoren Werke Aktiengesellschaft | Piston crown cooling method, control unit for carrying out the method, piston crown cooling device, internal combustion engine with a piston crown cooling device and motor vehicle |
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-
2012
- 2012-03-15 DE DE102012005227A patent/DE102012005227A1/en not_active Withdrawn
-
2013
- 2013-02-07 EP EP13154307.6A patent/EP2639433B1/en active Active
- 2013-03-14 CN CN201310080674.2A patent/CN103306837B/en active Active
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| JPH0436066A (en) * | 1990-05-29 | 1992-02-06 | Nippondenso Co Ltd | Knocking controller of engine |
| US5905193A (en) * | 1996-07-15 | 1999-05-18 | Toyota Jidosha Kabushiki Kaisha | Preignition detection apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386885A (en) * | 2014-08-21 | 2016-03-09 | 通用汽车环球科技运作有限责任公司 | Engine emission control system including combustion chamber temperature monitoring system |
| US10196998B2 (en) | 2014-08-21 | 2019-02-05 | GM Global Technology Operations LLC | Engine emission control system including combustion chamber temperature monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012005227A1 (en) | 2013-09-19 |
| CN103306837B (en) | 2017-04-12 |
| EP2639433B1 (en) | 2017-06-14 |
| EP2639433A1 (en) | 2013-09-18 |
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