CN113374589B - Self-adaptive air intake control method based on fully variable valve and storage medium - Google Patents
Self-adaptive air intake control method based on fully variable valve and storage medium Download PDFInfo
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- CN113374589B CN113374589B CN202110640027.7A CN202110640027A CN113374589B CN 113374589 B CN113374589 B CN 113374589B CN 202110640027 A CN202110640027 A CN 202110640027A CN 113374589 B CN113374589 B CN 113374589B
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
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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
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
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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
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D2041/001—Controlling intake air for engines with variable valve actuation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention relates to a self-adaptive air intake control method and a storage medium based on a fully variable valve, wherein the method comprises the following steps: obtaining the current working condition of the engine and using EIVCSlightly controlling air inflow; if the current ignition performance of the engine does not meet the performance requirement, the SEVL strategy is used for air intake control, and if the performance requirement is met, the degree of reduction of the current indicated power of the engine relative to the calibrated indicated power under the working condition is calculated; if the degree of decline exceeds a threshold value, using an SEVL strategy for air intake control, otherwise using an EIVC strategy for air intake control; using SEVL policy control, EIVC is used if the degree of degradation still exceeds the threshold L And (4) strategy air inlet control, otherwise, EIVC strategy air inlet control is used. Compared with the prior art, the invention effectively reduces the problems of difficult ignition and combustion and engine power reduction caused by the problem of air inflow of fuel oil in the actual operation of the engine by adjusting the air inflow control strategy in real time, thereby ensuring the smooth and stable operation of the Miller cycle engine under various working conditions.
Description
Technical Field
The invention relates to the field of engine air inlet control, in particular to a self-adaptive air inlet control method based on a fully variable valve and a storage medium.
Background
Compared with fixed valve lift timing arrangement, the variable valve technology of the engine is a technology capable of giving full play to energy conservation and emission reduction potential under partial load of the engine, and particularly, the optimal design of different valve routing lines and intake and exhaust strategies under any working condition can be further realized on the basis of the control strategy of the intake and exhaust system of the engine designed on the basis of the fully variable valve.
In the prior art, an EIVC (enhanced variable frequency) intake valve early closing strategy is a classical control strategy, and the EIVC intake valve early closing strategy is a key strategy for realizing Miller cycle under partial load, so that the effective compression ratio can be reduced, the expansion ratio can be improved, and the pumping loss and the oil consumption can be reduced. However, in the actual operation process of the engine, the pressure, the temperature and the air intake amount in the cylinder are influenced by various factors, the core idea of the EIVC is to reduce the air intake amount of an air inlet valve, and the condition that the air intake amount is insufficient due to condition change often exists in the actual process, so that the work of the engine is influenced, therefore, air intake compensation needs to be carried out through other means, the stability of the compression process in the cylinder is ensured, and the fuel ignition and combustion processes are carried out smoothly.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a self-adaptive air inlet control method and a storage medium based on a fully variable valve, wherein when an EIVC (enhanced variable valve intake valve) strategy is used for air inlet control, whether an SEVL (semi-open valve pressure) strategy is needed to be used for air inlet compensation is judged according to the ignition performance in a cylinder, the current indicating power is calculated in real time based on the pressure in the cylinder, if the current indicating power is reduced to a certain degree compared with the calibrated indicating power of the working condition, the SEVL strategy is firstly used for air inlet compensation, and when the SEVL strategy is not enough to make up for insufficient air inlet amount, the EIVC strategy is used again L Carrying out air inlet compensation by a strategy; through the real-time adjustment of the air inlet control strategy, the problems of difficult ignition and combustion and engine power reduction caused by the problem of air inlet amount of fuel oil in the actual operation of the engine are effectively reduced, and therefore smooth and stable operation of the Miller cycle engine under various working conditions is guaranteed.
The purpose of the invention can be realized by the following technical scheme:
an adaptive air inlet control method based on fully variable valves comprises the following steps:
s1, obtaining the current working condition of the engine, and obtaining the calibration indication power P of the engine under the current working condition i Performing air inlet control by using an EIVC strategy;
s2, acquiring the in-cylinder pressure and in-cylinder temperature of the engine, judging whether the current ignition performance meets the preset performance requirement, if not, executing a step S4, otherwise, executing a step S3;
s3, calculating the current indicated power P 'of the engine according to the in-cylinder pressure' i The value range of lambda is (0, 1) if P' i ＜(λ×P i ) If not, executing the step S4, otherwise, repeating the step S1 when the air inflow of the engine is normal;
s4, performing air intake control by using an SEVL strategy, and compensating air intake of an air intake valve under an EIVC strategy;
s5, acquiring the current working condition of the engine, and acquiring the calibrated indicated power P of the engine under the current working condition i Obtaining the in-cylinder pressure of the engine, and calculating the current indicated power P 'of the engine according to the in-cylinder pressure' i The value range of lambda is (0, 1) if P' i ＜(λ×P i ) If the EIVC strategy is adopted, the SEVL strategy cannot compensate the intake valve air under the EIVC strategy, and the EIVC strategy is adopted L The strategy performs air intake control and repeats step S5, otherwise, the engine air intake is normal and repeats step S1.
Further, the MAP of the EIVC policy is obtained in the following manner: performing air inlet control by using an EIVC strategy under each working condition, and recording the optimal air inlet control parameters of each working condition to obtain an MAP (MAP) diagram of the EIVC strategy;
the MAP of the SEVL strategy is obtained in the following manner: performing air inlet control by using an SEVL strategy under each working condition, and recording the optimal air inlet control parameters of each working condition to obtain an MAP (MAP of the SEVL strategy);
EIVC L the acquisition mode of the MAP of the strategy is as follows: using EIVC under various working conditions L The air inlet control is carried out by strategy, the optimal air inlet control parameter of each working condition is recorded, and the EIVC is obtained L MAP of the policy;
the ignition performance MAP graph is obtained in the following way: and acquiring ignition performances under different in-cylinder pressures and different in-cylinder temperatures to obtain an ignition performance MAP.
Further, in step S1, the intake control parameters for the current operating condition are obtained by looking up the MAP of the EIVC strategy.
Further, in step S4, the intake air control parameter for the current operating condition is obtained by looking up the MAP of the SEVL strategy.
Further, in step S5, the EIVC is processed L And the MAP table look-up of the strategy obtains the air inlet control parameters of the current working condition.
Further, in step S2, the in-cylinder pressure and in-cylinder temperature of the engine are acquired, the current ignition performance is obtained by looking up the ignition performance MAP, and if the current ignition performance does not meet the preset performance requirement, step S4 is executed, otherwise, step S3 is executed.
Further, in step S1 and step S5, the current fuel injection amount B is acquired e And the engine speed n according to the current fuel injection quantity B e And determining the current working condition of the engine according to the engine speed n, and after the current working condition is determined, looking up a working condition-calibration indication power MAP graph to obtain calibration indication power P under the current working condition i The working condition-calibration indication power MAP is calibrated when the engine leaves the factory, and the calibration indication power P of the engine under the working condition can be obtained by directly looking up a table according to the current working condition i 。
Further, in step S1 and step S5, the power P 'is currently indicated' i The calculation formula of (2) is as follows:
where n represents the engine speed, i represents the number of engine cylinders, P represents the in-cylinder pressure, τ represents the number of strokes, and dV represents the differential of the engine cylinder volume.
Further, in step S1 and step S5, λ is 0.95.
A computer storage medium having stored thereon an executable computer program which, when executed, implements an adaptive air induction control method as described above.
Compared with the prior art, when the EIVC strategy is used for air inlet control, whether an SEVL strategy is needed to be used for air inlet compensation is judged according to the ignition performance in a cylinder, the current indication power is calculated in real time based on the pressure in the cylinder, if the current indication power is reduced to a certain degree relative to the calibrated indication power under the working condition, the SEVL strategy is firstly used for air inlet compensation, and when the SEVL strategy is not enough to make up for the insufficient air inlet amount, the EIVC strategy is used L Carrying out air inlet compensation by a strategy; the method and the device effectively reduce fuel oil caused by air inflow problem in actual operation of the engine by adjusting the air inflow control strategy in real timeThe problems of difficult ignition and combustion and engine power reduction are solved, thereby ensuring smooth and stable operation of the Miller cycle engine under various working conditions.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
an adaptive air inlet control method based on fully variable valves is shown in figure 1 and comprises the following steps:
s1, acquiring the current working condition of the engine (based on the current fuel injection quantity B) e Determining the current working condition with the engine speed n, which is not described herein and can be understood by practitioners in relevant industries), and obtaining the calibrated indicated power P of the engine under the current working condition i The intake control is carried out by using the EIVC strategy through looking up a MAP graph of the EIVC strategy and controlling an intake valve;
s2, acquiring the in-cylinder pressure and in-cylinder temperature of the engine through a pressure sensor and a temperature sensor which are arranged in the engine cylinder, judging whether the current ignition performance meets the preset performance requirement, if not, executing the step S4, otherwise, executing the step S3;
s3, calculating the current indicated power P 'of the engine according to the in-cylinder pressure' i The value range of lambda is (0, 1) if P' i ＜(λ×P i ) If not, executing the step S4, otherwise, repeating the step S1 when the air inflow of the engine is normal;
s4, performing air inlet control by using an SEVL strategy through looking up a MAP chart of the SEVL strategy, controlling an air inlet valve and compensating air inlet of the air inlet valve under the EIVC strategy;
s5, acquiring the current working condition of the engine, and acquiring the calibrated indication power P of the engine under the current working condition i Obtaining the pressure in the cylinder, and calculating the current indicated power of the engine according to the pressure in the cylinderP′ i The value range of lambda is (0, 1) if P' i ＜(λ×P i ) Then, the SEVL strategy can not compensate the intake valve air under the EIVC strategy, and the intake valve air is subjected to the EIVC strategy L MAP graph lookup for policy, using EIVC L The strategy performs air inlet control, controls an air inlet valve and repeats step S5, otherwise, the air inlet quantity of the engine is normal and repeats step S1.
A computer storage medium having stored thereon an executable computer program which, when executed, implements the fully variable valve based adaptive air induction control method as described above.
The EIVC strategy is an intake valve early closing strategy, namely compared with the traditional intake control strategy, the intake valve is closed earlier, so that the effective compression ratio is reduced, the expansion ratio is improved, and the pumping loss and the oil consumption are reduced. However, in actual use, the intake air amount may be insufficient due to early closing of the intake valve, which may affect the stability and combustion performance of the in-cylinder compression process, and thus the power performance of the engine.
When the engine works, the EIVC strategy is used for controlling air intake, and whether the fuel combustion requirement is met or not is judged according to the in-cylinder pressure and the in-cylinder temperature. If the current EIVC strategy affects the ignited combustion in the cylinder, so that the ignited combustion is difficult, the EIVC strategy is closed, and the intake air amount compensation of exhaust gas recirculation is carried out by using the exhaust valve secondary opening SEVL strategy to supplement the intake air amount, the temperature and the pressure in the cylinder. If the normal ignition combustion can be carried out in the cylinder under the current EIVC strategy, the ignition performance is not influenced by the primary judgment, and then the subsequent control is carried out.
After the EIVC strategy does not influence the ignition performance, performing subsequent control, acquiring in-cylinder pressure, and calculating the current indicated power P 'of the engine based on the in-cylinder pressure' i If power P 'is currently indicated' i Compared with the calibrated indicated power P of the engine under the working condition i Decrease over (1-lambda), i.e. P' i ＜(λ×P i ) If the intake air amount is insufficient, the engine is not operated normally, the power is obviously reduced, the EIVC strategy is closed, the exhaust valve secondary opening SEVL strategy is used for compensating the intake air amount of the exhaust gas recirculation, and the intake in the cylinder is supplemented by the exhaust gas recirculationGas amount, temperature and pressure. If Power P 'is currently indicated' i If the reduction does not exceed (1-lambda), the engine is considered to be normally operated, the power is not obviously reduced, and the EIVC strategy can be continuously used for air inlet control.
After the current working condition is determined, the calibration indication power P under the current working condition is obtained by looking up a working condition-calibration indication power MAP (MAP) i The working condition-calibration indication power MAP is calibrated when the engine leaves the factory, and the calibration indication power P of the engine under the working condition can be obtained by directly looking up a table according to the current working condition i 。
After switching from the EIVC strategy to the SEVL strategy (because the EIVC strategy affects firing performance, or because the EIVC strategy currently indicates power P' i Excessive drop), intake air compensation is performed. Further judging whether the air intake compensation can compensate the air intake amount, and determining the current working condition and the calibration indication power P under the current working condition after the SEVL strategy is used for air intake control i Acquiring in-cylinder pressure in real time, calculating current indication power based on the in-cylinder pressure, and if the current indication power is P' i If the drop still exceeds (1-lambda), the SEVL strategy is not enough to compensate the power loss caused by the insufficient air intake quantity, the SEVL strategy is closed, the Miller degree is reduced, and the EIVC is started L The strategy comprises the steps of delaying the early closing angle of an air inlet valve, increasing the compression stroke and improving the compression final pressure so as to improve the dynamic property of the engine until the current indicated power P' i The decrease does not exceed (1-lambda).
Multiple tests can be performed in advance, the EIVC strategy is used for air inlet control under each working condition, so that an MAP (MAP) graph of the EIVC strategy is obtained, the working conditions can be directly obtained during subsequent real vehicle control, table lookup is performed to obtain the EIVC strategy air inlet control corresponding to the working conditions, and air inlet control parameters such as the early closing angle of an air inlet valve are obtained. Similarly, multiple tests can be performed in advance to obtain a MAP graph and an EIVC of the SEVL strategy L And (4) looking up a table to obtain air inlet control parameters corresponding to the working conditions during subsequent actual vehicle control by using a MAP (MAP of the strategy). The ignition performance MAP can also be obtained by multiple tests in advance, the in-cylinder pressure and the in-cylinder temperature are changed, the ignition performance is recorded, an ignition performance MAP graph is obtained, and the in-cylinder pressure and the in-cylinder temperature of the engine are obtained during subsequent real vehicle controlAnd (5) looking up a table to obtain the current ignition performance.
In steps S3 and S5, the power P 'is currently indicated' i The calculation formula of (2) is as follows:
wherein, P mi Indicating the mean indicated pressure, P the in-cylinder pressure, V s The cylinder volume of the engine, dV represents the differential of the engine cylinder volume, n represents the engine speed, i represents the number of engine cylinders, τ represents the number of strokes, in this embodiment the engine is a four-stroke engine, τ has a value of 4.
The in-cylinder pressure corresponds to one cycle of the engine, the calculation of the current indicating power corresponds to one cycle of the engine, the current indicating power is calculated once after each cycle of the engine, and the current indicating power is compared with the calibration indicating power of the current working condition to judge whether the air inlet control strategy needs to be switched.
In step S3 and step S5, λ is 0.95. In other embodiments, the value of λ may be adjusted based on the power demand on the engine. In this embodiment, under the EIVC policy, if the power P 'is currently indicated' i Decrease by more than 5% (i.e. P' i ＜0.95×P i ) If so, closing the EIVC strategy, and changing the SEVL strategy to compensate the intake valve air intake under the EIVC strategy; under the SEVL policy, if power P 'is currently indicated' i The decline is still over 5% (i.e. P' i ＜0.95×P i ) Then use EIVC instead L Strategy, further compensating intake valve air; if power P 'is currently indicated' i And if the reduction is not more than 5%, returning to the EIVC strategy to perform air inlet control.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An adaptive air inlet control method based on a fully variable valve is characterized by comprising the following steps:
s1, acquiring the current working condition of the engine, and acquiring the calibrated indicated power P of the engine under the current working condition i Performing air inlet control by using an EIVC strategy;
s2, acquiring the in-cylinder pressure and in-cylinder temperature of the engine, judging whether the current ignition performance meets the preset performance requirement, if not, executing a step S4, otherwise, executing a step S3;
s3, calculating the current indicated power P 'of the engine according to the in-cylinder pressure' i Lambda is taken in the range (0, 1) if P' i ＜(λ×P i ) If yes, executing step S4, otherwise, if the air inflow of the engine is normal, and repeating step S1;
s4, performing air inlet control by using an SEVL strategy;
s5, acquiring the current working condition of the engine, and acquiring the calibrated indicated power P of the engine under the current working condition i Obtaining the in-cylinder pressure of the engine, and calculating the current indicated power P 'of the engine according to the in-cylinder pressure' i The value range of lambda is (0, 1) if P' i ＜(λ×P i ) Then use EIVC L The strategy performs air intake control and repeats step S5, otherwise, the engine air intake is normal and repeats step S1.
2. The adaptive air intake control method based on the fully variable valve according to claim 1, characterized in that the MAP of the EIVC strategy is obtained in a mode that: performing air inlet control by using an EIVC strategy under each working condition, and recording the optimal air inlet control parameters of each working condition to obtain an MAP (MAP) diagram of the EIVC strategy;
the MAP of the SEVL strategy is obtained in the following manner: performing air inlet control by using an SEVL strategy under each working condition, and recording the optimal air inlet control parameters of each working condition to obtain an MAP (MAP of the SEVL strategy);
EIVC L the acquisition mode of the MAP of the strategy is as follows: using EIVC under various working conditions L The air inlet control is carried out by strategy, the optimal air inlet control parameter of each working condition is recorded, and the EIVC is obtained L MAP of the policy;
the ignition performance MAP graph is obtained in the following way: and acquiring ignition performances under different in-cylinder pressures and different in-cylinder temperatures to obtain an ignition performance MAP.
3. The adaptive air intake control method based on the fully variable valve according to claim 2, characterized in that in step S1, the air intake control parameters of the current working condition are obtained by looking up a MAP chart of an EIVC strategy.
4. The adaptive air intake control method based on fully variable valves according to claim 2, wherein in step S4, the air intake control parameters of the current working condition are obtained by looking up a MAP of the SEVL strategy.
5. The adaptive air intake control method based on the fully variable valve according to claim 2, characterized in that in step S5, the EIVC is performed through the control of the EIVC L And the MAP table look-up of the strategy obtains the air inlet control parameters of the current working condition.
6. The adaptive air intake control method based on fully variable valves according to claim 2, characterized in that in step S2, the in-cylinder pressure and in-cylinder temperature of the engine are obtained, the current ignition performance is obtained by looking up the ignition performance MAP, if the current ignition performance does not meet the preset performance requirements, step S4 is executed, otherwise, step S3 is executed.
7. The full variable gas-based fuel gas composition as claimed in claim 1The method for controlling the adaptive intake of the door is characterized in that in the steps S1 and S5, the current fuel injection quantity B is acquired e And the engine speed n according to the current fuel injection quantity B e Determining the current working condition of the engine according to the engine speed n, and determining the calibrated indication power P under the current working condition based on the current working condition i 。
8. The adaptive air intake control method based on fully variable valves according to claim 1, wherein in the steps S1 and S5, the current indicated power P' i The calculation formula of (2) is as follows:
where n represents the engine speed, i represents the number of engine cylinders, P represents the in-cylinder pressure, τ represents the number of strokes, and dV represents the differential of the engine cylinder volume.
9. The adaptive air intake control method based on the fully variable valve according to claim 1, wherein λ is 0.95 in step S1 and step S5.
10. A computer storage medium having an executable computer program stored thereon, wherein the computer program when executed implements an adaptive air induction control method according to any one of claims 1-9.
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| JPH0270960A (en) * | 1988-09-05 | 1990-03-09 | Mitsubishi Electric Corp | Control device for internal combustion engine |
| US6600989B2 (en) * | 2001-05-24 | 2003-07-29 | Delphi Technologies, Inc. | Apparatus and method for early intake valve closing |
| WO2004076831A2 (en) * | 2003-02-24 | 2004-09-10 | Edward Charles Mendler | Controlled auto-ignition engine |
| US7184877B1 (en) * | 2005-09-29 | 2007-02-27 | International Engine Intellectual Property Company, Llc | Model-based controller for auto-ignition optimization in a diesel engine |
| CN102171434B (en) * | 2008-11-19 | 2012-10-17 | 丰田自动车株式会社 | Device and method for detecting abnormality of cylinder pressure sensor and controller of internal combustion engine |
| WO2012098670A1 (en) * | 2011-01-20 | 2012-07-26 | トヨタ自動車株式会社 | Control device for compression ignition type internal combustion engine and method for determining smoke-generating state of compression ignition type internal combustion engine |
| CN106555682A (en) * | 2016-11-16 | 2017-04-05 | 中国北方发动机研究所(天津) | A kind of changeable air valve control method for reducing diesel engine starting operating mode noxious emission |
| CN109538347B (en) * | 2018-09-30 | 2021-12-14 | 天津大学 | Control method capable of realizing efficient clean compression ignition of gasoline in full working condition range |
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