CN108952985B - Engine oil injection control method based on engine cycle - Google Patents
Engine oil injection control method based on engine cycle Download PDFInfo
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- CN108952985B CN108952985B CN201810759623.5A CN201810759623A CN108952985B CN 108952985 B CN108952985 B CN 108952985B CN 201810759623 A CN201810759623 A CN 201810759623A CN 108952985 B CN108952985 B CN 108952985B
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
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- 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
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/10—Introducing corrections for particular operating conditions for acceleration
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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
- F02D41/30—Controlling fuel injection
-
- 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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
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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
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
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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)
- Electrical Control Of Ignition Timing (AREA)
Abstract
The invention discloses an engine oil injection control method based on engine cycle, which comprises the following steps: a. judging the operation condition of the engine; b. the method can control the ignition advance angle or the fuel injection quantity of each working cycle of the engine under the working condition independently, and the method can refine the control of the ignition and the fuel injection of the engine to each working cycle of the engine, further ensure the control parameters (the ignition time, the fuel injection pulse width and the fuel injection phase) of each working cycle of the engine to be more accurate, ensure the accuracy of the control parameters under the transition working condition and finally greatly improve the dynamic property, the economical efficiency and the emission level of the engine.
Description
Technical Field
The invention relates to an engine ignition and oil injection control method, in particular to an engine oil injection control method based on engine circulation.
Background
The ignition system of the engine and the fuel injection system are all important components of the gasoline engine, the ignition system usually comprises a storage battery, a generator, a distributor, an ignition coil, a spark plug and the like, when the engine works, the ignition time has great influence on the working performance of the engine, the ignition in advance is that the spark plug ignites before a piston reaches a compression top dead center to ignite combustible mixed gas in a combustion chamber, the ignition time is used for starting the piston to reach the compression top dead center, the angle rotated by a crankshaft in the period is called as an ignition advance angle, the set quality of the ignition advance angle plays a decisive role in the dynamic property, the economical property and the emission of the engine, and the fuel injection system is used for accurately controlling the fuel injection quantity, the injection time and the injection pressure of the engine to enable the fuel quantity injected into a cylinder to reach an optimal value.
The existing engine ignition control and fuel injection system generally adopts working condition control to control the ignition advance angle and the fuel injection quantity of an engine, not only under a certain specific working condition of the engine, but also the same ignition advance angle and fuel injection quantity are adopted for each working cycle of the working condition, the control method can not realize the accurate control of the engine combustion under the transient action of the engine, in addition, the existing engine fuel injection system generally determines the working condition point according to the running rotating speed and the accelerator load of the engine, and then calibrates and matches the ignition and fuel injection of an electronic fuel injection system according to the engine performance level, the running state and the combustion condition of the working condition point, but the engine is easy to cause the relevant problems of unstable running or poor combustion and the like of the engine in the transition working condition due to the rapid change of the state in the transition working condition.
Therefore, there is a need to improve the existing control method for engine ignition and fuel injection, so that the control of the engine ignition and fuel injection is refined to the engine cycle-based fuel injection control method for each working cycle of the engine, and further, the control parameters (ignition time, fuel injection pulse width and fuel injection phase) of each working cycle of the engine are more accurate, the accuracy of the control parameters in the transient working condition is ensured, and finally, the dynamic property, the economical efficiency and the emission level of the engine are greatly improved.
Disclosure of Invention
In view of the above, the present invention provides a method for controlling fuel injection based on engine cycles, which is capable of refining the control of ignition and fuel injection of the engine to each working cycle of the engine, further making the control parameters (ignition time, fuel injection pulse width and fuel injection phase) of each working cycle of the engine more accurate, ensuring the accuracy of the control parameters in the transient condition, and finally greatly improving the dynamic property, the economical efficiency and the emission level of the engine.
The invention discloses an engine ignition control method based on an engine cycle, which comprises the following steps:
a. judging the operation condition of the engine; the method for judging the working condition can adopt the existing working condition judging method, for example, the working condition judgment is carried out according to parameters such as the opening of a throttle valve of an engine, the variation of the opening of the throttle valve in unit time and the like;
b. the ignition advance angle of each working cycle of the engine under the working condition is controlled independently;
the method enables the ignition control of the engine to be refined to each working cycle of the engine, further enables the ignition time of each working cycle of the engine to be more accurate, ensures the accuracy of the ignition time in the transition working condition, and finally greatly improves the dynamic property, the economical efficiency and the emission level of the engine;
further, the method for performing the independent control comprises the following steps: when the engine is in a starting working condition, setting the ignition advance angles of the engine in the first m working cycles under the working condition as-alpha, and setting the ignition advance angles of the engine in the m +1 th to the nth working cycles under the working condition as-beta, wherein beta is larger than alpha; obviously, m and n are integers, m is more than 0 and less than n, the ignition advance angles of m working cycles before the starting working condition are controlled to be smaller angles, at the moment, because the engine is just started, the temperature in a combustion chamber is relatively lower, the air-fuel mixture is relatively poorer, the combustion rate is reduced, the knocking tendency of the engine is weaker, the smaller ignition advance angle alpha is adopted to facilitate the ignition of the engine, and the ignition advance angle of the engine is increased to be beta after the mth working cycle of the starting working condition so as to increase the output power of the engine;
when the engine is in an acceleration working condition, increasing a set angle gamma on a basic ignition angle by the ignition advance angle of the first p working cycles of the engine under the working condition, controlling the ignition advance angle of the engine from the p +1 to the q working cycles under the working condition to be gradually reduced, and controlling the ignition advance angle of each working cycle after the q working cycle of the engine under the working condition to be recovered to the basic ignition angle, obviously, p and q are integers and are more than 0 and less than q, the ignition advance angle of the p working cycles before the acceleration working condition is controlled to be a larger angle, the power of the engine can be improved, the acceleration performance of the vehicle can be rapidly improved to meet the power requirement of the vehicle, the ignition advance angle is gradually reduced after the m working cycles, at the moment, the temperature of a combustion chamber of the engine is higher, the ignition advance angle is gradually reduced to avoid the detonation of the engine, in addition, the fuel consumption and the emission performance of the engine can be further improved by reducing the ignition advance angle;
further, after the nth working cycle of the engine under the starting working condition is finished, if the engine does not ignite, controlling the ignition angle of each working cycle of the engine after the nth working cycle under the starting working condition to delay by a set angle theta, when the ignition angle of the engine is too large, when the ignition angle is too advanced, when the engine under the starting working condition, a piston does not go up to a top dead center, mixed gas expands due to the advanced ignition, the upward force of the piston is in conflict with the force of gas expansion, so that the running resistance of the engine is large during starting, the starting is difficult and the phenomenon of cylinder knocking is accompanied, the ignition failure is easily caused, and if the engine does not ignite after the nth working cycle under the starting working condition, the ignition angle should be delayed by the set angle theta to ensure that the engine smoothly ignites to realize starting;
further, m is 1 and n is 5; the ranges of the ignition advance angles-alpha and-beta are respectively as follows: -3 ° < -alpha < 8 °, -5 ° < -beta < 5 °, a smaller ignition advance angle-alpha is adopted in the first working cycle of the engine under the starting working condition, so as to ensure that the starting can be realized in the first working cycle, and a larger ignition advance angle-beta is adopted from the second working cycle, so as to improve the output power of the engine, and simultaneously, the engine is stably transited from the starting working condition to the subsequent steady state working condition or acceleration working condition;
further, p is 1 and q is 3; and when the rotating speed of the engine is more than 3000rpm and less than 5000rpm, the range of the set angle gamma is as follows: 5 ° < γ < 30 °, when the rotational speed of the engine is greater than 5000rpm and less than 10000rpm, the range of the set angle γ is: gamma is more than 3 degrees and less than 20 degrees, and because the temperature of a combustion chamber is relatively high when the engine rotates at a high speed and the detonation is easy to occur, the increment of the ignition advance angle is adjusted to be low at the high speed so as to avoid the detonation;
further, the range of the retardation angle θ is: 0 DEG < theta < 10 DEG, and when the vehicle is in an extreme environment, such as a cold environment, the engine still can not be ignited after n working cycles, and the ignition angle can be properly delayed to enable the engine cylinder to be heated quickly.
The invention also discloses an engine oil injection control method based on the engine cycle, which comprises the following steps: a. judging the operation condition of the engine; the method for judging the working condition can adopt the existing working condition judging method, for example, the working condition judgment is carried out according to parameters such as the opening of a throttle valve of an engine, the variation of the opening of the throttle valve in unit time and the like; b. the fuel injection quantity of each working cycle of the engine under the working condition is independently controlled; the method enables the control of the fuel injection quantity of the engine to be refined to each working cycle of the engine, further enables the ignition time of each working cycle of the engine to be more accurate, ensures the accuracy of the fuel injection quantity in the transition working condition, and finally greatly improves the dynamic property, the economical efficiency and the emission level of the engine;
further, the method for performing the independent control comprises the following steps: when the engine is in a starting working condition, controlling the oil injection quantity of the engine in the first s working cycles under the working condition to be V, and setting the oil injection quantity of the engine in the s +1 th to the t th working cycles under the working condition to be W, wherein V is larger than W; obviously, s and t are integers, s is more than 0 and less than t, the fuel injection quantity of s working cycles before the starting working condition is more, so that a relatively thick mixed gas is formed in a cylinder, at the moment, because the engine is just started, the temperature in a combustion chamber is relatively low, the fuel-air mixing is relatively poor, the combustion rate is reduced, the knocking tendency of the engine is weak, the relatively thick mixed gas is formed in the cylinder at the moment so as to facilitate the ignition of the engine, and the fuel injection quantity of the engine is properly reduced after the t working cycle of the starting working condition so as to reduce the fuel consumption of the engine;
when the engine is in an acceleration working condition, controlling the oil injection quantity of the engine in the first u working cycles under the working condition to be X, controlling the oil injection quantity of the engine in the (u + 1) th to the (v) th working cycles under the working condition to be gradually reduced, and controlling the oil injection quantity of each working cycle of the engine after the (v) th working cycle under the working condition to be recovered as a basic oil injection quantity;
further, after the t-th working cycle of the engine under the starting working condition is finished, if the engine does not ignite, the oil injection pulse width of each working cycle of the engine after the t-th working cycle under the working condition is prolonged, and when the vehicle is in an extreme environment, such as a cold environment, the engine still cannot ignite after the t working cycles, the oil injection pulse width can be properly increased, so that a relatively concentrated mixed gas is formed in a cylinder, and the engine is easy to ignite;
further, the air-fuel ratio of the first s working cycles of the engine under the starting working condition is controlled to be 0-11, the air-fuel ratio of the s +1 th working cycle to the t th working cycle of the engine under the working condition is controlled to be 11-13, and the air-fuel ratio of the first u working cycles of the engine under the acceleration working condition is not more than 12.5;
further, s is 1 and t is 5, u is 3 and v is 5.
The invention has the beneficial effects that: the engine oil injection control method based on the engine cycle judges the operating condition of the engine by using the existing working condition judgment method, for example, the judgment is carried out according to parameters such as the throttle valve change rate, the ignition advance angle or the oil injection quantity of each working cycle of the engine under the working condition is independently controlled after the judgment is finished, the control of the ignition and the oil injection of the engine is refined to each working cycle of the engine, the control parameters (the ignition time, the oil injection pulse width and the oil injection phase) of each working cycle of the engine are more accurate, the accuracy of the control parameters under the transition working condition is ensured, and the dynamic property, the economical efficiency and the emission level of the engine are finally greatly improved.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the control logic of the present invention.
Detailed Description
The first embodiment is as follows: FIG. 1 is a schematic diagram of the control logic of the present invention; as shown in the figure: the engine ignition control method based on the engine cycle of the embodiment comprises the following steps:
a. judging the operation condition of the engine; the method for judging the working condition can adopt the existing working condition judging method, for example, the working condition judgment is carried out according to parameters such as the opening of a throttle valve of an engine, the variation of the opening of the throttle valve in unit time and the like; b. the ignition advance angle of each working cycle of the engine under the working condition is controlled independently;
the ignition advance angle of each working cycle of the engine under a certain working condition is independently controlled, so that the ignition control of the engine can be refined to each working cycle of the engine, the control parameters of each working cycle of the engine are more accurate, the accuracy of the control parameters under the transition working condition is ensured, and finally the dynamic property, the economical efficiency and the emission level of the engine are greatly improved.
In this embodiment, the method for performing the independent control includes: when the engine is in a starting working condition, setting the ignition advance angle of the engine in the 1 st working cycle under the working condition as-alpha, and setting the ignition advance angles of the engine in the 2 nd to 5 th working cycles under the working condition as-beta, wherein beta is larger than alpha; the ignition advance angle of the 1 st working cycle of the starting working condition is controlled to be a small angle, at the moment, because the engine is just started, the temperature in a combustion chamber is relatively low, the mixture of oil and gas is relatively poor, the combustion rate is reduced, the knocking tendency of the engine is weak, at the moment, the small ignition advance angle alpha is adopted to facilitate the ignition of the engine, and the ignition advance angle is increased to be beta after the 1 st working cycle of the starting working condition of the engine so as to increase the output power of the engine;
when the engine is in an acceleration working condition, increasing the ignition advance angle of the engine in the first 2 working cycles under the working condition by a set angle gamma on the basic ignition angle, and controlling the ignition advance angle of the engine in the 3 rd to 7 th working cycles to be gradually reduced under the working condition, and controls the ignition advance angle of each working cycle after the 7 th working cycle of the engine under the working condition to be recovered as the basic ignition angle, controls the ignition advance angle of 2 working cycles before the acceleration working condition to be a larger angle, can improve the power of the engine, thereby rapidly improving the acceleration performance of the vehicle to meet the power requirement of the vehicle, gradually reducing the ignition advance angle after 2 working cycles, at the moment, the temperature of the combustion chamber of the engine is higher, the ignition advance angle is gradually reduced, so that the detonation of the engine can be avoided, in addition, the fuel consumption and the emission performance of the engine can be further improved by reducing the ignition advance angle;
in the embodiment, after the 5 th working cycle of the engine under the starting working condition is finished, if the engine does not ignite, the ignition angle of each working cycle of the engine after the 5 th working cycle under the starting working condition is controlled to delay by a set angle theta, when the ignition angle of the engine is too large, when the ignition angle of the engine is too advanced, when the piston does not go up to the top dead center, the mixed gas expands due to the advanced ignition, the upward force of the piston is in conflict with the force of gas expansion, so that the running resistance of the engine is large during starting, the starting is difficult and the phenomenon of cylinder knocking is accompanied, the ignition failure is easily caused, and if the engine does not ignite after the 5 th working cycle under the starting working condition, the ignition angle is delayed by the set angle theta to ensure that the engine smoothly ignites to realize starting;
in this embodiment, the ranges of the spark advance angles- α and- β are respectively: -3 ° < - α < 8 °, -5 ° < - β < 5 °, wherein the angle of ignition advance- α is preferably-3 °, 0 ° or 8 °, and the angle of ignition advance- β is preferably-5 °, 0 ° or 5 °.
In this embodiment, when the engine is in an acceleration condition, and when the rotation speed of the engine is greater than 3000rpm and less than 5000rpm, the advance angle of ignition of the first 2 working cycles is increased by a set angle γ on the basis of the basic ignition angle, and the range of the angle γ is as follows: 5 ° < γ < 30 °, in this embodiment, the angle γ may preferably be 5 °, 15 °, or 30 °; when the rotational speed of the engine is greater than 5000rpm and less than 10000rpm, the range of the angle γ is: 3 ° < γ < 20 °, the angle γ can preferably be 3 °, 7 ° or 10 °; because the temperature of the combustion chamber is relatively high when the engine rotates at a high speed, and the detonation is easy to occur, the increment of the ignition advance angle is adjusted to be low at the high speed, and the detonation is avoided.
In this embodiment, if the engine has not yet ignited after 5 working cycles before the start-up condition is completed, the ignition angle delay setting angle θ of the subsequent working cycle is controlled, and the range of θ is: 0 < theta < 10 deg., in this embodiment, the angle theta is preferably 0 deg., 3 deg., or 5 deg., and when the engine is still unable to light off after 5 operating cycles when the vehicle is in an extreme environment, such as a cold environment, the engine cylinder can be rapidly heated by appropriately retarding the ignition angle.
Example two: the engine fuel injection control method based on the engine cycle comprises the following steps: a. judging the operation condition of the engine; the method for judging the working condition can adopt the existing working condition judging method, for example, the working condition judgment is carried out according to parameters such as the opening of a throttle valve of an engine, the variation of the opening of the throttle valve in unit time and the like; b. the fuel injection quantity of each working cycle of the engine under the working condition is independently controlled; the independent control of the fuel injection quantity of each working cycle of the engine under a certain working condition can enable the fuel injection control of the engine to be refined to each working cycle of the engine, so that the control parameters of each working cycle of the engine are more accurate, the accuracy of the control parameters under the transition working condition is ensured, and finally the dynamic property, the economical efficiency and the emission level of the engine are greatly improved.
In this embodiment, the method for performing the independent control includes: when the engine is in a starting working condition, controlling the oil injection quantity of the engine in the 1 st working cycle under the working condition to be V, and setting the oil injection quantity of the engine in the 2 nd to 5 th working cycles under the working condition to be W, wherein V is larger than W; the fuel injection quantity of the 1 st working cycle of the starting working condition is more, so that a relatively concentrated mixed gas is formed in the cylinder, at the moment, the temperature in a combustion chamber is relatively lower due to the fact that the engine is just started, the mixture of oil and gas is relatively poor, the combustion rate is reduced, the knocking tendency of the engine is relatively weak, the relatively concentrated mixed gas is formed in the cylinder at the moment, the engine is convenient to start, and the fuel injection quantity is properly reduced after the 1 st working cycle of the starting working condition of the engine so as to reduce the fuel consumption of the engine;
when the engine is in an acceleration working condition, controlling the oil injection quantity of 1 st to 3 rd working cycles of the engine under the working condition to be X, controlling the oil injection quantity of the engine under the working condition to gradually reduce from 4 th to 5 th working cycles, and controlling the oil injection quantity of each working cycle of the engine after the 5 th working cycle under the working condition to recover as a basic oil injection quantity, wherein the oil injection quantity of 3 working cycles before the acceleration working condition is more, so that a relatively concentrated mixed gas is formed in a cylinder, the power of the engine can be improved, the acceleration performance of the vehicle can be rapidly improved to meet the power requirement of the vehicle, and the oil injection quantity is gradually reduced after the 3 working cycles to improve the oil consumption and the emission performance of the engine;
in the embodiment, after the 5 th working cycle of the engine under the starting working condition is finished, if the engine does not ignite, the oil injection pulse width of each working cycle of the engine after the 5 th working cycle under the working condition is prolonged, and when a vehicle is in an extreme environment, such as a cold environment, the engine still cannot ignite after the 5 working cycles, at the moment, the oil injection pulse width can be properly increased, so that a relatively concentrated mixed gas is formed in a cylinder, and the engine is easy to ignite;
in the embodiment, the air-fuel ratio of the 1 st working cycle of the engine under the starting working condition is controlled to be 10-11, the air-fuel ratio can be preferably 10.5, the air-fuel ratio of the 2 nd to 5 th working cycles of the engine under the working condition is controlled to be 11-13, the air-fuel ratio can be preferably 12 in the embodiment, and the air-fuel ratio of the first 3 working cycles of the engine under the accelerating working condition is not more than 12.5.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (4)
1. An engine fuel injection control method based on an engine cycle, characterized by comprising the steps of:
a. judging the operation condition of the engine;
b. according to the judged operating condition of the engine, independently controlling the fuel injection quantity of each working cycle of the engine under the operating condition;
the method for performing the individual control is as follows:
if the engine is in a starting working condition, controlling the oil injection quantity of the engine in the first s working cycles under the working condition to be V, and controlling the oil injection quantity of the engine in the s +1 th to the t th working cycles under the working condition to be W, wherein s and t are positive integers, s is more than s +1 and less than t, and V is more than W;
and if the engine is under an acceleration working condition, controlling the oil injection quantity of the engine in the first u working cycles under the working condition to be X, controlling the oil injection quantity of the engine in the (u + 1) th to the (v) th working cycles under the working condition to be gradually reduced, and controlling the oil injection quantity of each working cycle after the (v) th working cycle of the engine under the working condition to be recovered to the basic oil injection quantity of the engine under the acceleration working condition, wherein u and v are positive integers, and u is more than u +1 and more than v.
2. The engine cycle-based engine fueling control method of claim 1, wherein: after the t-th working cycle of the engine under the starting working condition is finished, if the engine does not ignite, the oil injection pulse width of each working cycle of the engine after the t-th working cycle under the working condition is prolonged.
3. The engine cycle-based engine fueling control method of claim 1, wherein: the air-fuel ratio of the first s working cycles of the engine under the starting working condition is controlled to be 10-11, the air-fuel ratio of the s +1 th to the t th working cycles of the engine under the starting working condition is controlled to be 11-13, and the air-fuel ratio of the first u working cycles of the engine under the accelerating working condition is not more than 12.5.
4. The engine cycle-based engine fueling control method of claim 1, wherein: s is 1 and t is 5, u is 3 and v is 5.
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| CN201610748499.3A CN106246437B (en) | 2016-08-26 | 2016-08-26 | Engine ignition based on cycle of engine controls control method |
| CN201810759623.5A CN108952985B (en) | 2016-08-26 | 2016-08-26 | Engine oil injection control method based on engine cycle |
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| CN111636970B (en) * | 2020-06-05 | 2021-08-24 | 吉林大学 | Cold start oil injection ignition control method based on composite injection engine |
| CN111622855A (en) * | 2020-06-09 | 2020-09-04 | 中国第一汽车股份有限公司 | Control method for fuel injection of direct injection engine |
| CN114251213A (en) * | 2020-09-24 | 2022-03-29 | 深圳臻宇新能源动力科技有限公司 | Multi-cylinder engine ignition control method and device and vehicle |
| CN114635807B (en) * | 2022-03-21 | 2023-08-18 | 重庆隆鑫发动机有限公司 | Motorcycle and fuel injection control method, system and device after engine start thereof |
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| CN105143650A (en) * | 2013-04-16 | 2015-12-09 | 株式会社电装 | Internal combustion engine control device capable of estimating temperature of internal combustion engine |
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Also Published As
| Publication number | Publication date |
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| CN108952985A (en) | 2018-12-07 |
| CN106246437B (en) | 2019-01-04 |
| CN106246437A (en) | 2016-12-21 |
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