CN115111081B - Engine oil injection control method and device, storage medium and vehicle - Google Patents

Engine oil injection control method and device, storage medium and vehicle Download PDF

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Publication number
CN115111081B
CN115111081B CN202210107969.3A CN202210107969A CN115111081B CN 115111081 B CN115111081 B CN 115111081B CN 202210107969 A CN202210107969 A CN 202210107969A CN 115111081 B CN115111081 B CN 115111081B
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oil
injection
pressure
engine
main
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CN115111081A (en
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胡建月
付亚豪
赵怀北
徐康
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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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
    • F02D41/3809—Common rail control systems
    • 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
    • F02D41/3809—Common rail control systems
    • F02D2041/3881—Common rail control systems with multiple common rails, e.g. one rail per cylinder bank, or a high pressure rail and a low pressure rail

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

The application provides an engine oil injection control method and device, a storage medium and a vehicle, and belongs to the technical field of automobiles. Comprising the following steps: determining what combustion state the engine is in; when it is determined that the engine is in a lean combustion state; acquiring a first oil pressure of a first oil rail connected with a first oil injector of the main combustion chamber and a second oil pressure of a second oil rail connected with a second oil injector of the precombustion chamber; judging which of a plurality of oil injection modes is adopted by the first oil injector to carry out oil injection according to the first oil pressure; and judging whether the second oil injector sprays oil or not according to the second oil pressure. By using the engine oil injection control method provided by the application, the oil injection actions of the first oil injector and the second oil injector are accurately controlled after the first oil pressure and the second oil pressure are respectively judged, so that the control accuracy is improved, and the problems of low oil injection control accuracy and high oil consumption of the existing engine oil injection control method in a lean combustion mode are solved.

Description

Engine oil injection control method and device, storage medium and vehicle
Technical Field
The embodiment of the application relates to the technical field of automobiles, in particular to an engine oil injection control method, an engine oil injection control device, a storage medium and a vehicle.
Background
The engine can effectively reduce the oil consumption of the engine by adopting a lean combustion mode under medium and low load, and the lean combustion mode needs to add a precombustion chamber on the structure of the original engine, and the precombustion chamber is used for supporting combustion in a main combustion chamber. However, after the precombustor is added, the main combustion chamber and the precombustor fuel injection need to be simultaneously and cooperatively controlled. Therefore, the fuel injection control accuracy of the engine is low, and the fuel consumption is increased. Therefore, the fuel injection control method of the existing engine has low fuel injection control accuracy and high fuel consumption in the lean combustion mode, and is a technical problem to be solved urgently.
Disclosure of Invention
The embodiment of the application provides an engine oil injection control method, an engine oil injection control device, a storage medium and a vehicle, and aims to solve the problems of low oil injection control accuracy and high oil consumption of the existing oil injection control method of an engine in a lean combustion mode.
An embodiment of the present application provides a method for controlling fuel injection of an engine, including:
Determining what combustion state the engine is in;
when it is determined that the engine is in a lean combustion state; acquiring a first oil pressure of a first oil rail connected with a first oil injector of the main combustion chamber and a second oil pressure of a second oil rail connected with a second oil injector of the precombustion chamber;
Judging which of a plurality of oil injection modes is adopted by the first oil injector to carry out oil injection according to the first oil pressure;
And judging whether the second oil injector sprays oil or not according to the second oil pressure.
Optionally, determining what combustion state the engine is in includes:
The main ECU acquires current operation parameters of the engine; wherein the operating parameters include rotational speed and torque;
When the rotation speed is between the first preset rotation speed and the second preset rotation speed and the torque is between the first preset torque and the second preset torque, the main ECU determines that the engine is in a lean combustion state;
otherwise the main ECU determines that the engine is not in a lean combustion state.
Optionally, the method further comprises:
And when the engine is not in the lean combustion state, controlling the first oil injector to spray oil according to the oil spraying parameters of the main combustion chamber, and controlling the second oil injector not to spray oil.
Optionally, the plurality of injection modes include a high-pressure injection mode and a low-pressure injection mode, and determining which of the plurality of injection modes is adopted by the first injector to inject the fuel according to the first oil pressure includes:
The main ECU compares the first oil pressure with a first preset oil pressure threshold value and judges whether a high-pressure oil injection condition is met, if the high-pressure oil injection condition is met, the main ECU controls the first oil injector to adopt a high-pressure oil injection mode for oil injection according to the oil injection parameter of the main combustion chamber, and if the high-pressure oil injection condition is not met, the main ECU controls the first oil injector to adopt a low-pressure oil injection mode for oil injection according to the oil injection parameter of the main combustion chamber;
Judging whether the second oil injector sprays oil according to the second oil pressure, comprising:
The main ECU compares the second oil pressure with a second preset oil pressure threshold value to judge whether the pre-chamber oil injection condition is met, if the pre-chamber oil injection condition is met, the main ECU sends the pre-chamber oil injection parameter to the auxiliary ECU, the auxiliary ECU controls the second oil injector to perform oil injection according to the pre-chamber oil injection parameter, if the pre-chamber oil injection condition is not met, the main ECU sends an oil cut-off instruction to the auxiliary ECU, and the auxiliary ECU controls the second oil injector not to perform oil injection.
Optionally, the main combustion chamber fuel injection parameters include a fuel injection angle and a fuel injection pulse width, and the calculation method of the main combustion chamber fuel injection parameters includes:
the main ECU calculates the required air quantity according to the current operation parameters of the engine and the required torque, wherein the operation parameters comprise the torque;
the main ECU calculates the required oil quantity according to the required gas quantity and the air-fuel ratio;
the main ECU obtains a judging result of whether the second oil injector sprays oil or not;
If the second fuel injector sprays fuel, the main ECU calculates the required gas quantity of the main combustion chamber according to the gas quantity required proportion of the main combustion chamber, and calculates the required oil quantity of the main combustion chamber according to the required gas quantity, the required gas quantity and the required oil quantity of the main combustion chamber; the main ECU calculates the fuel injection parameters of the main combustion chamber according to the fuel quantity required by the main combustion chamber;
if the second oil injector does not spray oil, the main ECU calculates the oil spraying parameter of the main combustion chamber according to the required oil quantity.
Optionally, the precombustor oil injection parameters include an oil injection angle and an oil injection pulse width, and the method for calculating the precombustor oil injection parameters includes:
the main ECU calculates the required air quantity according to the current operation parameters of the engine and the required torque, wherein the operation parameters comprise the torque;
the main ECU calculates the required oil quantity according to the required gas quantity and the air-fuel ratio;
The main ECU calculates the required gas amount of the precombustion chamber according to the required gas amount ratio of the precombustion chamber, and calculates the required oil amount of the precombustion chamber according to the required gas amount of the precombustion chamber, the required gas amount and the required oil amount; and the main ECU calculates the oil injection parameters of the precombustor according to the oil quantity required by the precombustor.
Optionally, the main ECU compares the first oil pressure with a first preset oil pressure threshold value, and determines whether a high-pressure oil injection condition is satisfied, including:
judging that the high-pressure oil injection condition is met under the condition that the first oil pressure is larger than or equal to a first preset oil pressure threshold value;
under the condition that the first oil pressure is smaller than a first preset oil pressure threshold value, judging that the high-pressure oil injection condition is not met;
the main ECU compares the second oil pressure with a second preset oil pressure threshold value to judge whether the oil injection condition of the precombustor is met or not, and the method comprises the following steps:
when the second oil pressure is greater than or equal to a second preset oil pressure threshold value, judging that the pre-combustion chamber oil injection condition is met;
and when the second oil pressure is smaller than a second preset oil pressure threshold value, judging that the pre-combustion chamber oil injection condition is not met.
A second aspect of the present application provides an engine fuel injection control apparatus comprising:
A first determination module: for determining what combustion state the engine is in;
A first acquisition module: for when it is determined that the engine is in a lean combustion state; acquiring a first oil pressure of a first oil rail connected with a first oil injector of the main combustion chamber and a second oil pressure of a second oil rail connected with a second oil injector of the precombustion chamber;
a first judging module: the first oil pressure judging device is used for judging which of a plurality of oil injection modes is adopted by the first oil injector to carry out oil injection according to the first oil pressure;
and a second judging module: and judging whether the second oil injector sprays oil or not according to the second oil pressure.
A third aspect of the present application provides a readable storage medium having stored thereon an engine oil injection control program which when executed by a processor implements an engine oil injection control method as provided in the first aspect of the present application.
A fourth aspect of the application provides an automobile comprising a controller comprising a readable storage medium and a processor;
the readable storage medium stores an engine oil injection control program;
a processor for executing an engine oil injection control program in a readable storage medium to implement the engine oil injection control method as provided in the first aspect of the application.
The beneficial effects are that:
According to the engine oil injection control method provided by the application, when the engine is in a lean combustion state, the first oil pressure of the first oil rail connected with the first oil injector of the main combustion chamber and the second oil pressure of the second oil rail connected with the second oil injector of the precombustion chamber are obtained, which of a plurality of oil injection modes is adopted by the first oil injector to carry out oil injection is judged according to the first oil pressure, and whether the effect of high-pressure injection can be achieved by the second oil pressure is judged according to the second oil pressure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of an engine fuel injection control method according to an embodiment of the present application;
FIG. 2 is a schematic illustration of lean burn regions in an engine fuel injection control method according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of an engine fuel injection control structure in an engine fuel injection control method according to an embodiment of the present application;
fig. 4 is a block diagram of an engine fuel injection control device according to an embodiment of the present application.
Reference numerals illustrate: 1. a main combustion chamber; 2. a precombustion chamber; 3. a first oil rail; 4. a second oil rail; 5. a first fuel injector; 6. a second fuel injector; 7. a main ECU; 8. a sub ECU; 9. a first pressure sensor; 10. and a second pressure sensor.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The lean combustion mode is a combustion mode in which a precombustion chamber with high concentration of mixed gas is ignited, and then flame in the precombustion chamber enters a main combustion chamber with relatively thin mixed gas through spray holes, and a plurality of ignition points are formed in the main combustion chamber. The equivalent combustion mode is a mode in which the main combustion chamber is directly ignited without combustion supporting in the pre-combustion chamber, and the fuel is fully combusted by controlling the air-fuel ratio of the main combustion chamber to an optimum air-fuel ratio, that is, an equivalent ratio.
In the related art, the engine can effectively reduce the oil consumption of the engine by adopting a lean combustion mode under medium and low load, and the lean combustion mode needs to add a precombustion chamber on the structure of the original engine, and the precombustion chamber is used as a main combustion chamber for supporting combustion. However, after the precombustor is added, the main combustion chamber and the precombustor fuel injection need to be simultaneously and cooperatively controlled. Therefore, the fuel injection control accuracy of the engine is low, and the fuel consumption is increased. Therefore, the fuel injection control method of the existing engine has low fuel injection control accuracy and high fuel consumption in the lean combustion mode, and is a technical problem to be solved urgently.
In view of this, the engine oil injection control method provided by the application obtains the first oil pressure of the first oil rail connected with the first oil injector of the main combustion chamber and the second oil pressure of the second oil rail connected with the second oil injector of the precombustion chamber when the engine is in a lean combustion state, judges which of a plurality of oil injection modes is adopted by the first oil injector to perform oil injection according to the first oil pressure, judges whether the second oil injector can achieve the effect of high-pressure injection according to the second oil pressure, the high-pressure injection can effectively improve the penetration rate and atomization effect of injection, the combustion efficiency of fuel is improved, and the oil injection actions of the first oil injector and the second oil injector are accurately controlled after the first oil pressure and the second oil pressure are respectively judged, so that the control accuracy can be improved, the penetration rate and atomization effect of injection are effectively improved, the combustion efficiency of the fuel is improved, and the technical problem of low oil consumption and high oil injection control accuracy of the existing engine oil injection control method in the lean combustion mode is solved.
Example 1
Referring to FIG. 1, a flow chart of an engine fuel injection control method of the present application is shown, as shown in FIG. 1, comprising the steps of:
Step S1: it is determined what combustion state the engine is in.
The combustion state of the engine includes a lean combustion state and an equivalent combustion state, and the lean combustion state can promote the combustion rate and the thermal efficiency of the engine when the engine is in a lean combustion region, and can achieve lower hydrocarbon emissions.
Step S2: when it is determined that the engine is in a lean combustion state; a first oil pressure of a first oil rail 3 connected to a first oil injector 5 of the main combustion chamber 1 and a second oil pressure of a second oil rail 4 connected to a second oil injector 6 of the pre-combustion chamber 2 are obtained.
The first fuel rail 3 is used for storing fuel injected into the main combustion chamber 1, and the second fuel rail 4 is used for storing fuel injected into the precombustion chamber 2, and when the engine is determined to be in a lean combustion state, the first oil pressure and the second oil pressure are acquired in real time.
Step S3: it is determined which of a plurality of injection modes the first injector 5 performs injection based on the first oil pressure.
Whether the first oil sprayer 5 can achieve the effect of high-pressure injection or not is judged according to the first oil pressure, the high-pressure injection can effectively improve the penetration rate and atomization effect of injection, and the combustion efficiency of fuel oil is improved. When the first oil pressure is insufficient to meet the effect that the first oil injector 5 achieves high-pressure injection, the first oil injector 5 adopts an oil injection mode capable of achieving the high-pressure injection effect, and when the first oil pressure is insufficient to meet the effect that the first oil injector 5 achieves high-pressure injection, the first oil injector 5 adopts an oil injection mode incapable of achieving the high-pressure injection effect so as to meet the normal operation of the engine. Therefore, after the first oil pressure judges which of a plurality of oil injection modes is adopted by the first oil injector 5 to perform oil injection, the oil injection action of the first oil injector 5 is accurately controlled, so that the control accuracy can be improved, the injection penetration rate and atomization effect can be effectively improved, and the combustion efficiency of the fuel oil can be improved.
Step S4: whether the second fuel injector 6 injects fuel or not is judged according to the second fuel pressure.
Whether the second oil sprayer 6 can achieve the effect of high-pressure injection or not is judged according to the second oil pressure, the high-pressure injection can effectively improve the penetration rate and atomization effect of injection, and the combustion efficiency of fuel oil is improved. When the second oil pressure is insufficient to meet the effect of high-pressure injection of the second oil injector 6, if oil injection is performed at the moment, the penetration rate and atomization effect of injection are poor, the injected fuel cannot be fully combusted, and the combustion efficiency is low; when the second oil pressure meets the effect of high-pressure injection of the second oil injector 6, oil injection is performed at the moment, so that the penetration rate and atomization effect of injection can be effectively improved, and the combustion efficiency of fuel oil is improved. Therefore, whether the second oil injector 6 sprays oil or not is judged through the second oil pressure, and then the oil spraying action of the second oil injector 6 is accurately controlled, so that the control accuracy can be improved, the penetration rate and atomization effect of the injection can be effectively improved, and the combustion efficiency of the fuel oil can be improved.
According to the engine oil injection control method provided by the application, when the engine is in a lean combustion state, the first oil pressure of the first oil rail 3 connected with the first oil injector 5 of the main combustion chamber 1 and the second oil pressure of the second oil rail 4 connected with the second oil injector 6 of the precombustion chamber 2 are obtained, which of a plurality of oil injection modes is adopted by the first oil injector 5 for oil injection is judged according to the first oil pressure, and whether the effect of high-pressure injection can be achieved by the second oil injector 6 is judged according to the second oil pressure, so that the penetration rate and atomization effect of injection can be effectively improved, the combustion efficiency of fuel is improved, and the oil injection actions of the first oil injector 5 and the second oil injector 6 are accurately controlled after the first oil pressure and the second oil pressure are respectively judged, so that the penetration rate and atomization effect of injection can be improved, the combustion efficiency of the fuel is improved, and the technical problems of low oil injection control accuracy and high oil consumption of the existing engine oil injection control method in the lean combustion mode are solved.
Based on the above engine oil injection control method, the present application provides the following examples of specific embodiments, and each example may be arbitrarily combined to form another engine oil injection control method without contradiction, and it should be understood that, for another engine oil injection control method formed by combining any examples, all the examples fall within the protection scope of the present application.
In one possible embodiment, determining what combustion state the engine is in includes:
Step S11: a main electronic control unit (Electronic Control Unit, ECU) acquires the current operation parameters of the engine; wherein the operating parameters include rotational speed and torque.
And acquiring the running parameters of the current engine in real time, wherein the running parameters comprise the rotating speed and the torque of the engine, and judging whether the engine is in a lean combustion state or not according to the acquired running parameters of the current engine.
Step S12: when the rotation speed is between the first preset rotation speed and the second preset rotation speed, and the torque is between the first preset torque and the second preset torque, the main ECU7 determines that the engine is in a lean combustion state; otherwise the main ECU7 determines that the engine is not in the lean combustion state.
Referring to fig. 2, a schematic diagram of a lean combustion region in an engine fuel injection control method according to the present application is shown, and as shown in fig. 2, when the rotational speed is between a first preset rotational speed and a second preset rotational speed and the torque is between the first preset torque and the second preset torque, the engine is in the lean combustion region, and the square frame region in fig. 2 is the lean combustion region. When the engine is in a lean combustion area, the fuel consumption of the engine can be effectively reduced by adopting a lean combustion mode; when the engine is not in a lean combustion area, the fuel consumption of the engine can be effectively reduced by adopting the equivalent combustion mode.
Example: the first preset rotating speed is 1500r/min, and the second preset rotating speed is 3000r/min; the first preset torque is 30Nm, the second preset torque is 200Nm, when the engine speed is 1500-3000r/min and the engine torque is 30-200Nm, the engine is in a lean combustion area, a lean combustion mode is adopted at the moment, and when the engine is not in the lean combustion area, an equivalent combustion mode is adopted.
In one possible embodiment, the method further comprises:
step S5: when it is determined that the engine is not in the lean combustion state, the first injector 5 is controlled to inject fuel according to the main combustion chamber fuel injection parameter, and the second injector 6 is controlled not to inject fuel.
The lean combustion state is a combustion state in which the pre-combustion chamber 2 having a high mixture concentration is ignited, and then flame in the pre-combustion chamber 2 is introduced into the main combustion chamber 1 having a relatively lean mixture through the nozzle holes, thereby forming a plurality of ignition points in the main combustion chamber 1. When it is determined that the engine is not in the lean combustion state, the engine is in the equivalent combustion state, which is a state in which the fuel is fully combusted by controlling the air-fuel ratio of the main combustion chamber 1 to an optimum air-fuel ratio, that is, an equivalent ratio, by directly igniting the main combustion chamber 1 without the need for combustion supporting by the pre-combustion chamber 2. Thus, when the engine is in the equivalent combustion state, the first injector 5 is controlled to inject fuel according to the main combustion chamber injection parameter, and the second injector 6 is controlled not to inject fuel.
In one possible embodiment, the plurality of injection modes includes a high-pressure injection mode and a low-pressure injection mode, and determining which of the plurality of injection modes the first injector 5 uses to inject the fuel according to the first oil pressure includes:
Step S31: the main ECU7 compares the first oil pressure with a first preset oil pressure threshold value to judge whether a high-pressure oil injection condition is met, if the high-pressure oil injection condition is met, the main ECU7 controls the first oil injector 5 to perform oil injection in a high-pressure oil injection mode according to the main combustion chamber oil injection parameter, and if the high-pressure oil injection condition is not met, the main ECU7 controls the first oil injector 5 to perform oil injection in a low-pressure oil injection mode according to the main combustion chamber oil injection parameter.
The first preset oil pressure threshold value is used for representing whether the first oil pressure can meet the requirement that the first oil injector 5 sprays oil to the main combustion chamber 1 to achieve the effect of high-pressure injection, when the first oil pressure meets the requirement that the first oil injector 5 sprays oil to the main combustion chamber 1 to achieve the effect of high-pressure injection, at the moment, the first oil injector 5 is controlled to spray oil in a high-pressure oil spraying mode according to the oil spraying parameters of the main combustion chamber, at the moment, the effect of high-pressure injection can be achieved by the oil spraying of the first oil injector 5, the penetration rate and atomization effect of injection are effectively improved, and the combustion efficiency of fuel is improved; when the first oil pressure is insufficient to meet the effect that the first oil injector 5 injects oil to the main combustion chamber 1 to achieve high-pressure injection, the main ECU7 controls the first oil injector to inject oil in a low-pressure oil injection mode according to the main combustion chamber oil injection parameters. After judging whether the first oil injector 5 meets the high-pressure oil injection condition through the first oil pressure, accurately controlling the first oil injector 5 to take a corresponding mode for oil injection, improving the accuracy of controlling and judging whether the high-pressure oil injection condition is met, effectively improving the penetration rate and atomization effect of injection, and improving the combustion efficiency of fuel oil.
Judging whether the second fuel injector 6 injects fuel according to the second fuel pressure, comprising:
Step S41: the main ECU7 compares the second oil pressure with a second preset oil pressure threshold value to judge whether the pre-chamber oil injection condition is met, if the pre-chamber oil injection condition is met, the main ECU7 sends the pre-chamber oil injection parameter to the auxiliary ECU8, the auxiliary ECU8 controls the second oil injector 6 to perform oil injection according to the pre-chamber oil injection parameter, if the pre-chamber oil injection condition is not met, the main ECU7 sends an oil cut-off instruction to the auxiliary ECU8, and the auxiliary ECU8 controls the second oil injector 6 not to perform oil injection.
The second preset oil pressure threshold is used for representing whether the second oil pressure can meet the requirement that the oil injection of the second oil injector 6 to the precombustor 2 achieves the effect of high-pressure injection, when the second oil pressure meets the requirement that the oil injection of the second oil injector 6 to the precombustor 2 achieves the effect of high-pressure injection, the second oil injector 6 is controlled to inject oil to the precombustor 2, and then the oil injection of the second oil injector 6 can achieve the effect of high-pressure injection, so that the penetration rate and atomization effect of injection are effectively improved, and the combustion efficiency of fuel is improved; when the second oil pressure is insufficient to satisfy the effect of high-pressure injection of the second injector 6 into the precombustor 2, if injection is performed at this time, the penetration rate and atomization effect of the injection are not good, the injected fuel cannot be combusted sufficiently, and the combustion efficiency is low, so that the second injector 6 is controlled not to perform injection into the precombustor 2 at this time. The first preset oil pressure threshold value and the second preset oil pressure threshold value may be the same or different, and are not limited herein.
In one possible embodiment, the main combustion chamber fuel injection parameters include a fuel injection angle and a fuel injection pulse width, and the calculating method of the main combustion chamber fuel injection parameters includes:
step S311: the main ECU7 calculates the required air amount based on the current operation parameters of the engine including the torque and the required torque.
The main ECU7 includes an inflation model, and inputs the current torque and the required torque into the inflation model, so that the required amount of air for the engine required from the current torque to the required torque can be calculated.
Step S312: the main ECU7 calculates the required oil amount from the required air amount and the air-fuel ratio.
The air-fuel ratio is the ratio of the mass between air and fuel, and the ratio of the required air amount to the air-fuel ratio is the required oil amount.
The main ECU7 obtains the result of the determination as to whether the second injector 6 is injecting fuel.
Step S313: if the second fuel injector 6 performs fuel injection, the main ECU7 calculates the required gas quantity of the main combustion chamber according to the gas quantity required proportion of the main combustion chamber, and calculates the required oil quantity of the main combustion chamber according to the required gas quantity, the required gas quantity and the required oil quantity of the main combustion chamber; the main ECU7 calculates the main combustion chamber fuel injection parameters based on the main combustion chamber required fuel amount.
The product of the gas demand and the gas demand ratio of the main combustion chamber 1 is the gas demand of the main combustion chamber 1, and the product of the gas demand of the engine and the gas demand ratio of the main combustion chamber is the gas demand of the main combustion chamber; the main ECU7 calculates the required oil quantity of the main precombustion chamber according to the required gas quantity, the required gas quantity and the required oil quantity of the main combustion chamber, wherein the required oil quantity of the main combustion chamber is the required oil quantity multiplied by the ratio of the required gas quantity to the required gas quantity of the main combustion chamber; the main ECU7 calculates the injection angle and the injection pulse width of the main combustion chamber 1 based on the required oil amount of the main combustion chamber.
Step S314: if the second fuel injector 6 does not perform fuel injection, the main ECU7 calculates the fuel injection parameters of the main combustion chamber according to the required fuel quantity.
If the second fuel injector 6 does not perform fuel injection, the required fuel quantity of the engine is equal to the required fuel quantity of the main fuel chamber at this time, the main ECU7 converts the required fuel quantity into a fuel injection pulse width and a fuel injection angle, and controls fuel injection to the main fuel chamber 1 according to the fuel injection pulse width and the fuel injection angle, so that the fuel injection quantity can be controlled more accurately, and the control accuracy is improved.
In one possible embodiment, the precombustor injection parameters include an injection angle and an injection pulse width, and the method for calculating the precombustor injection parameters includes:
Step S411: the main ECU7 calculates the required air amount based on the current operation parameters of the engine including the torque and the required torque.
The main ECU7 includes an inflation model, and inputs the current torque and the required torque into the inflation model, so that the amount of air of the engine required from the current torque to the required torque can be calculated.
Step S412: the main ECU7 calculates the required oil amount from the required air amount and the air-fuel ratio.
The air-fuel ratio is the ratio of the mass between air and fuel, and the ratio of the required air amount to the air-fuel ratio is the required oil amount.
Step S413: the main ECU7 calculates the required gas amount of the precombustor according to the required gas amount proportion of the precombustor, and calculates the required oil amount of the precombustor according to the required gas amount, the required gas amount and the required oil amount of the precombustor; the main ECU7 calculates the oil injection parameters of the precombustor according to the oil quantity required by the precombustor.
The main ECU7 calculates the demand gas quantity of the precombustor according to the demand gas quantity and the demand ratio of the precombustor, and the product of the demand gas quantity of the engine and the demand ratio of the precombustor is the demand gas quantity of the precombustor; the main ECU7 calculates the required oil quantity of the precombustor according to the required gas quantity, the required gas quantity and the required oil quantity of the precombustor, wherein the required oil quantity of the precombustor is the required oil quantity multiplied by the ratio of the required gas quantity of the precombustor to the required gas quantity; the main ECU7 calculates the oil injection angle and the oil injection pulse width of the precombustor 2 according to the oil quantity required by the precombustor.
In one possible embodiment, the main ECU7 compares the first oil pressure with a first preset oil pressure threshold value, and determines whether the high-pressure oil injection condition is satisfied, including:
step S315: judging that the high-pressure oil injection condition is met under the condition that the first oil pressure is larger than or equal to a first preset oil pressure threshold value; and under the condition that the first oil pressure is smaller than a first preset oil pressure threshold value, judging that the high-pressure oil injection condition is not met.
Under the condition that the first oil pressure is larger than or equal to a first preset oil pressure threshold value, the main combustion chamber 1 meets the high-pressure oil injection condition, the first oil pressure meets the effect that the first oil injector 5 injects oil to the main combustion chamber 1 to achieve high-pressure injection, at the moment, the main combustion chamber 1 is controlled to inject oil, and then the effect of high-pressure injection can be achieved by the oil injection of the first oil injector 5, so that the penetration rate and atomization effect of injection are effectively improved, and the combustion efficiency of fuel oil is improved; under the condition that the first oil pressure is smaller than the first preset oil pressure threshold value, if the main combustion chamber 1 does not meet the high-pressure oil injection condition, the first oil pressure is insufficient to meet the effect that the first oil injector 5 injects oil to the main combustion chamber 1 to achieve high-pressure injection, and at the moment, the main ECU7 controls the first oil injector 5 to inject oil in a low-pressure oil injection mode according to the oil injection parameters of the main combustion chamber. The first oil pressure is compared with the first preset oil pressure threshold value, so that whether the first oil injector 5 meets the high-pressure oil injection condition is judged, the first oil injector 5 is accurately controlled to take a corresponding mode for oil injection, the accuracy of controlling and judging whether the high-pressure oil injection condition is met can be improved, the penetration rate and atomization effect of injection are effectively improved, and the combustion efficiency of fuel is improved.
The main ECU7 compares the second oil pressure with a second preset oil pressure threshold value, and determines whether the pre-chamber 2 oil injection condition is satisfied, including:
Step S411: when the second oil pressure is greater than or equal to a second preset oil pressure threshold value, judging that the pre-combustion chamber oil injection condition is met; and when the second oil pressure is smaller than a second preset oil pressure threshold value, judging that the pre-combustion chamber oil injection condition is not met.
When the second oil pressure is greater than or equal to a second preset oil pressure threshold value, the second oil pressure meets the effect that the second oil injector 6 injects oil to the precombustor 2 to achieve high-pressure injection, at the moment, the main ECU7 sends the precombustor oil injection parameters to the auxiliary ECU8, and the auxiliary ECU8 controls the second oil injector 6 to inject oil to the precombustor 2 according to the precombustor oil injection parameters, so that the effect of high-pressure injection can be achieved by the oil injection of the second oil injector 6, the penetration rate and atomization effect of injection are effectively improved, and the combustion efficiency of fuel is improved; if the second oil pressure is smaller than the second preset oil pressure threshold, the second oil pressure is insufficient to meet the effect that the second oil injector 6 injects oil to the precombustor 2 to achieve high-pressure injection, if the oil injection is performed at the moment, the penetration rate and atomization effect of the injection are poor, the injected fuel cannot be combusted sufficiently, and the combustion efficiency is low, so that the main ECU7 sends an oil-breaking instruction to the auxiliary ECU8, the auxiliary ECU8 controls the second oil injector 6 not to inject oil to the precombustor 2, and simultaneously adjusts the second oil pressure, and when the second oil pressure is larger than or equal to the second preset oil pressure threshold, the second oil injector 6 is controlled to inject oil to the precombustor 2.
In one possible embodiment, referring to fig. 3, there is shown a schematic diagram of an engine fuel injection control structure in an engine fuel injection control method, as shown in fig. 3, the engine includes a main combustion chamber 1, a pre-combustion chamber 2 communicating with the main combustion chamber 1, a first fuel rail 3 for supplying fuel to the main combustion chamber 1 for fuel injection, a second fuel rail 4 for supplying fuel to the pre-combustion chamber 2 for fuel injection, a first fuel injector 5, a second fuel injector 6, a main ECU7, a sub ECU8, and a first pressure sensor 9 for detecting the oil pressure of the first fuel rail 3 in real time and a second pressure sensor 10 for detecting the oil pressure of the second fuel rail 4 in real time. One end of the first oil rail 3 is connected with the main ECU7, and the other end is connected with the first oil sprayer 5; one end of the second oil rail 4 is connected with the auxiliary ECU8, and the other end of the second oil rail is connected with the second oil sprayer 6; the first injector 5 is used for injecting fuel into the main combustion chamber 1 and the second injector 6 is used for injecting fuel into the prechamber 2.
The first pressure sensor 9 and the second pressure sensor 10 are respectively connected with the main ECU7 in communication; the main ECU7 and the sub ECU8 are connected in communication via a controller area network (Controller Area Network, hereinafter referred to as CAN) bus. The main ECU7 is configured to acquire the oil pressure of the first oil rail 3 and the oil pressure of the second oil rail 4 in real time, calculate the oil injection parameter of the main combustion chamber 1 and the oil injection parameter of the pre-combustion chamber 2 from the acquired data, and send the oil injection parameters of the pre-combustion chamber 2 to the sub ECU8. The main ECU7 is also used for controlling the main combustion chamber 1 to spray oil according to the oil spraying parameters of the main combustion chamber 1; the sub ECU8 is used to control the injection of fuel into the prechamber 2 according to the injection parameters of the prechamber 2.
According to the application, the first fuel rail 3 for providing fuel for fuel injection to the main combustion chamber 1 and the second fuel rail 4 for providing fuel for fuel injection to the precombustion chamber 2 are respectively arranged, the main combustion chamber 1 and the precombustion chamber 2 are respectively connected with the corresponding special fuel rails, so that interference can not be generated between the main combustion chamber 1 and the precombustion chamber 2, and the anti-interference capability of fuel injection control of an engine is improved.
Example two
Based on the same inventive concept, another embodiment of the present application provides an engine oil injection control apparatus for performing the engine oil injection control method according to the first embodiment of the present application; referring to fig. 4, which shows a block diagram of the structure of an engine oil injection control apparatus, as shown in fig. 4, the engine oil injection control apparatus includes:
The first determination module 11: for determining what combustion state the engine is in.
The first acquisition module 12: for when it is determined that the engine is in a lean combustion state; a first oil pressure of a first oil rail 3 connected to a first oil injector 5 of the main combustion chamber 1 and a second oil pressure of a second oil rail 4 connected to a second oil injector 6 of the pre-combustion chamber 2 are obtained.
The first judging module 13: for determining which of a plurality of injection modes the first injector 5 is injecting based on the first oil pressure.
The second judging module 14: whether the second fuel injector 6 injects fuel or not is judged according to the second fuel pressure.
According to the engine oil injection control device provided by the application, when the engine is in a lean combustion state, the first oil pressure of the first oil rail 3 connected with the first oil injector 5 of the main combustion chamber 1 and the second oil pressure of the second oil rail 4 connected with the second oil injector 6 of the precombustion chamber 2 are obtained, which of a plurality of oil injection modes is adopted by the first oil injector 5 for oil injection is judged according to the first oil pressure, and whether the effect of high-pressure injection can be achieved by the second oil injector 6 is judged according to the second oil pressure, so that the penetration rate and atomization effect of injection can be effectively improved, the combustion efficiency of fuel is improved, and the oil injection actions of the first oil injector 5 and the second oil injector 6 are accurately controlled after the first oil pressure and the second oil pressure are respectively judged, so that the penetration rate and atomization effect of injection can be improved, the combustion efficiency of the fuel is improved, and the technical problems of low oil injection control accuracy and high oil consumption of the existing engine oil injection control method in the lean combustion mode are solved.
In one possible embodiment, the first determining module 11 comprises:
The first acquisition unit 111: for the main ECU7 to acquire current operating parameters of the engine; wherein the operating parameters include rotational speed and torque;
The first determination unit 112: for determining that the engine is in a lean combustion state when the rotation speed is between the first preset rotation speed and the second preset rotation speed and the torque is between the first preset torque and the second preset torque by the main ECU 7; otherwise the main ECU7 determines that the engine is not in the lean combustion state.
In one possible embodiment, the engine oil injection control device further includes:
the first control unit 15: for controlling the first injector 5 to inject fuel according to the fuel injection parameters of the main combustion chamber 1 and controlling the second injector 6 not to inject fuel when it is determined that the engine is not in the lean combustion state.
In one possible embodiment, the plurality of fuel injection modes includes a high-pressure fuel injection mode and a low-pressure fuel injection mode, and the first judging module 13 includes:
The first control unit 131: the main ECU7 is configured to compare the first oil pressure with a first preset oil pressure threshold value, determine whether a high-pressure oil injection condition is met, if the high-pressure oil injection condition is met, the main ECU7 controls the first oil injector 5 to perform oil injection in a high-pressure oil injection mode according to the main combustion chamber oil injection parameter, and if the high-pressure oil injection condition is not met, the main ECU7 controls the first oil injector 5 to perform oil injection in a low-pressure oil injection mode according to the main combustion chamber oil injection parameter.
The second judging module 14 includes:
The second control unit 141: the main ECU7 compares the second oil pressure with a second preset oil pressure threshold value to judge whether the pre-chamber oil injection condition is met, if the pre-chamber oil injection condition is met, the main ECU7 sends the pre-chamber oil injection parameter to the auxiliary ECU8, the auxiliary ECU8 controls the second oil injector 6 to perform oil injection according to the pre-chamber oil injection parameter, if the pre-chamber oil injection condition is not met, the main ECU7 sends an oil cut-off instruction to the auxiliary ECU8, and the auxiliary ECU8 controls the second oil injector 6 not to perform oil injection.
In another possible embodiment, the main chamber injection parameters include injection angle and injection pulse width, and the first control unit 131 includes:
first computing subunit 1311: the main ECU7 calculates the required air amount based on the current operation parameters of the engine including the torque and the required torque.
Second computing subunit 1312: the main ECU7 calculates the required oil amount based on the required air amount and the air-fuel ratio.
The main ECU7 obtains a judgment result of whether the second fuel injector 6 performs fuel injection;
third calculation subunit 1313: if the second fuel injector 6 is used for fuel injection, the main ECU7 calculates the required gas quantity of the main combustion chamber according to the gas quantity required proportion of the main combustion chamber, and calculates the required oil quantity of the main combustion chamber according to the required gas quantity, the required gas quantity and the required oil quantity of the main combustion chamber; the main ECU7 calculates the main combustion chamber fuel injection parameters based on the main combustion chamber required fuel amount.
A fourth computing subunit 1314: for calculating the main combustion chamber fuel injection parameters according to the required fuel amount by the main ECU7 if the second fuel injector 6 does not perform fuel injection
In a possible embodiment, the prechamber 1 injection parameters include injection angle and injection pulse width, and the second control unit 141 comprises:
A fifth calculation subunit 1411: the main ECU7 calculates the required air amount based on the current operation parameters of the engine including the torque and the required torque.
Sixth calculation subunit 1412: the main ECU7 calculates the required oil amount based on the required air amount and the air-fuel ratio.
A seventh calculation subunit 1413: the main ECU7 is used for calculating the gas demand of the precombustor according to the gas demand proportion of the precombustor and calculating the oil demand of the precombustor according to the gas demand of the precombustor, the gas demand and the oil demand; the main ECU7 calculates the oil injection parameters of the precombustor according to the oil quantity required by the precombustor.
In one possible embodiment, the first control unit 131 includes:
first determination subunit 1315: the method comprises the steps of judging that a high-pressure oil injection condition is met under the condition that a first oil pressure is larger than or equal to a first preset oil pressure threshold value; and under the condition that the first oil pressure is smaller than a first preset oil pressure threshold value, judging that the high-pressure oil injection condition is not met.
The second control unit 141 includes:
The second determination subunit 1414: the oil injection device is used for judging that the oil injection condition of the precombustion chamber is met when the second oil pressure is larger than or equal to a second preset oil pressure threshold value; and when the second oil pressure is smaller than a second preset oil pressure threshold value, judging that the pre-combustion chamber oil injection condition is not met.
For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
Example III
The embodiment of the application also provides a readable storage medium, and the readable storage medium stores an engine oil injection control program which is executed by a processor to realize the engine oil injection control method provided by the first aspect of the application.
According to the readable storage medium provided by the application, when the engine is in a lean combustion state, the first oil pressure of the first oil rail 3 connected with the first oil sprayer 5 of the main combustion chamber 1 and the second oil pressure of the second oil rail 4 connected with the second oil sprayer 6 of the precombustion chamber 2 are obtained, which of a plurality of oil spraying modes is adopted by the first oil sprayer 5 for oil spraying is judged according to the first oil pressure, whether the effect of high-pressure spraying can be achieved by the second oil sprayer 6 is judged according to the second oil pressure, the penetration rate and atomization effect of the spraying can be effectively improved, the combustion efficiency of the fuel is improved, the oil spraying actions of the first oil sprayer 5 and the second oil sprayer 6 are accurately controlled after the first oil pressure and the second oil pressure are respectively judged, the penetration rate and the atomization effect of the spraying can be improved, the combustion efficiency of the fuel is improved effectively, and the technical problems of low oil spraying control accuracy and high oil consumption of the oil spraying control method of the existing engine in the lean combustion mode are solved.
Example IV
The embodiment of the application also provides an automobile, which comprises a controller, wherein the controller comprises a readable storage medium and a processor;
the readable storage medium stores an engine oil injection control program;
a processor for executing an engine oil injection control program in a readable storage medium to implement the engine oil injection control method as provided in the first aspect of the application.
According to the automobile provided by the application, when the engine is in the lean combustion state, the first oil pressure of the first oil rail 3 connected with the first oil sprayer 5 of the main combustion chamber 1 and the second oil pressure of the second oil rail 4 connected with the second oil sprayer 6 of the precombustion chamber 2 are obtained, the first oil sprayer 5 is judged to adopt one of a plurality of oil spraying modes according to the first oil pressure, and whether the second oil sprayer 6 can achieve the effect of high-pressure spraying or not is judged according to the second oil pressure, so that the penetration rate and atomization effect of spraying can be effectively improved, the combustion efficiency of fuel is improved, the oil spraying actions of the first oil sprayer 5 and the second oil sprayer 6 are accurately controlled after the first oil pressure and the second oil pressure are respectively judged, the penetration rate and atomization effect of spraying can be improved, the combustion efficiency of the fuel is improved, and the technical problems of low oil spraying control accuracy and high oil consumption of the existing oil spraying control method of the engine in the lean combustion mode are solved.
It should be understood that while the description of the application has described preferred embodiments of the application, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the application.
The above description of the method, the device, the storage medium and the vehicle for controlling the fuel injection of the engine provided by the application applies specific examples to illustrate the principle and the implementation of the application, and the description of the above examples is only used for helping to understand the method and the core idea of the application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims (9)

1. An engine fuel injection control method, comprising:
Determining what combustion state the engine is in;
When it is determined that the engine is in a lean combustion state; acquiring a first oil pressure of a first oil rail connected with a first oil injector of the main combustion chamber and a second oil pressure of a second oil rail connected with a second oil injector of the precombustion chamber;
judging which of a plurality of oil injection modes is adopted by the first oil injector to perform oil injection according to the first oil pressure;
judging whether the second oil injector sprays oil or not according to the second oil pressure;
The plurality of oil injection modes comprise a high-pressure oil injection mode and a low-pressure oil injection mode, the judging of which of the plurality of oil injection modes is adopted by the first oil injector for oil injection according to the first oil pressure comprises the following steps:
The main ECU compares the first oil pressure with a first preset oil pressure threshold value and judges whether a high-pressure oil injection condition is met, if the high-pressure oil injection condition is met, the main ECU controls the first oil injector to adopt a high-pressure oil injection mode for oil injection according to a main combustion chamber oil injection parameter, and if the high-pressure oil injection condition is not met, the main ECU controls the first oil injector to adopt a low-pressure oil injection mode for oil injection according to the main combustion chamber oil injection parameter;
Judging whether the second oil injector sprays oil according to the second oil pressure, wherein the judging comprises the following steps:
And the main ECU compares the second oil pressure with a second preset oil pressure threshold value, judges whether the pre-chamber oil injection condition is met, if the pre-chamber oil injection condition is met, the main ECU sends the pre-chamber oil injection parameter to the auxiliary ECU, the auxiliary ECU controls the second oil injector to perform oil injection according to the pre-chamber oil injection parameter, and if the pre-chamber oil injection condition is not met, the main ECU sends an oil cut-off instruction to the auxiliary ECU, and the auxiliary ECU controls the second oil injector not to perform oil injection.
2. The method of claim 1, wherein the determining what combustion state the engine is in comprises:
The main ECU acquires the current running parameters of the engine; wherein the operating parameters include rotational speed and torque;
when the rotational speed is between a first preset rotational speed and a second preset rotational speed, and the torque is between a first preset torque and a second preset torque, the main ECU determines that the engine is in a lean combustion state;
Otherwise, the main ECU determines that the engine is not in a lean combustion state.
3. The method according to claim 1, wherein the method further comprises:
And when the engine is not in the lean combustion state, controlling the first oil injector to spray oil according to the oil spraying parameters of the main combustion chamber, and controlling the second oil injector not to spray oil.
4. A method according to claim 1 or 3, wherein the main chamber injection parameters include injection angle and injection pulse width, and the method of calculating the main chamber injection parameters comprises:
The main ECU calculates the required air quantity according to the current operation parameters of the engine and the required torque, wherein the operation parameters comprise the torque;
The main ECU calculates the required oil quantity according to the required air quantity and the air-fuel ratio;
the main ECU acquires a judging result of whether the second oil injector sprays oil or not;
if the second fuel injector is used for fuel injection, the main ECU calculates the required gas quantity of the main combustion chamber according to the gas quantity required proportion of the main combustion chamber, and calculates the required oil quantity of the main combustion chamber according to the required gas quantity of the main combustion chamber, the required gas quantity and the required oil quantity; the main ECU calculates the fuel injection parameters of the main combustion chamber according to the fuel quantity required by the main combustion chamber;
And if the second fuel injector does not perform fuel injection, the main ECU calculates the fuel injection parameter of the main combustion chamber according to the required fuel quantity.
5. The method of claim 1, wherein the prechamber fuel injection parameters include a fuel injection angle and a fuel injection pulse width, and wherein the method of calculating the prechamber fuel injection parameters comprises:
The main ECU calculates the gas demand according to the current operation parameters of the engine and the required torque, wherein the operation parameters comprise the torque;
The main ECU calculates the required oil quantity according to the required air quantity and the air-fuel ratio;
The main ECU calculates the demand gas quantity of the precombustion chamber according to the demand ratio of the precombustion chamber, and calculates the demand oil quantity of the precombustion chamber according to the demand gas quantity of the precombustion chamber, the demand gas quantity and the demand oil quantity; and the main ECU calculates the oil injection parameters of the precombustor according to the oil quantity required by the precombustor.
6. The method of claim 1, wherein the main ECU comparing the first oil pressure with a first preset oil pressure threshold value, determining whether a high pressure fuel injection condition is satisfied, comprises:
Judging that the high-pressure oil injection condition is met under the condition that the first oil pressure is larger than or equal to a first preset oil pressure threshold value;
judging that the high-pressure oil injection condition is not met under the condition that the first oil pressure is smaller than a first preset oil pressure threshold value;
the main ECU compares the second oil pressure with a second preset oil pressure threshold value to judge whether the oil injection condition of the precombustor is met, and the method comprises the following steps:
when the second oil pressure is greater than or equal to a second preset oil pressure threshold value, judging that the pre-combustion chamber oil injection condition is met;
And when the second oil pressure is smaller than the second preset oil pressure threshold value, judging that the pre-combustion chamber oil injection condition is not met.
7. An engine fuel injection control device, characterized in that the device comprises:
A first determination module: for determining what combustion state the engine is in;
a first acquisition module: for when it is determined that the engine is in a lean combustion state; acquiring a first oil pressure of a first oil rail connected with a first oil injector of the main combustion chamber and a second oil pressure of a second oil rail connected with a second oil injector of the precombustion chamber;
A first judging module: the first oil pressure judging device is used for judging which of a plurality of oil injection modes is adopted by the first oil injector to carry out oil injection according to the first oil pressure;
and a second judging module: and judging whether the second oil sprayer sprays oil or not according to the second oil pressure.
8. A readable storage medium, wherein an engine oil injection control program is stored on the readable storage medium, which when executed by a processor, implements the steps of the engine oil injection control method according to any one of claims 1 to 6.
9. A vehicle comprising a controller, the controller comprising a readable storage medium and a processor, wherein the readable storage medium has stored thereon an engine fueling control program;
The processor configured to execute the engine fuel injection control program in the readable storage medium to implement the engine fuel injection control method according to any one of claims 1 to 6.
CN202210107969.3A 2022-01-28 2022-01-28 Engine oil injection control method and device, storage medium and vehicle Active CN115111081B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980059893A (en) * 1996-12-31 1998-10-07 박병재 How to increase injection pressure and change timing in L-B-D-I engine
JP2000310135A (en) * 1999-04-28 2000-11-07 Honda Motor Co Ltd Air-fuel ratio control device for internal combustion engine
CN101377163A (en) * 2007-08-31 2009-03-04 株式会社电装 Fuel injection device, fuel injection system, and method for determining malfunction of the same
CN103161595A (en) * 2011-12-14 2013-06-19 中国第一汽车股份有限公司无锡油泵油嘴研究所 Multiple-injection control method for internal-combustion engine fuel system
CN106121846A (en) * 2016-08-15 2016-11-16 江西汇尔油泵油嘴有限公司 A kind of diesel engine fuel injecting control method
CN107630752A (en) * 2016-07-19 2018-01-26 现代自动车株式会社 Predict the device of diesel engine pressure and the pressure prediction method using the device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980059893A (en) * 1996-12-31 1998-10-07 박병재 How to increase injection pressure and change timing in L-B-D-I engine
JP2000310135A (en) * 1999-04-28 2000-11-07 Honda Motor Co Ltd Air-fuel ratio control device for internal combustion engine
CN101377163A (en) * 2007-08-31 2009-03-04 株式会社电装 Fuel injection device, fuel injection system, and method for determining malfunction of the same
CN103161595A (en) * 2011-12-14 2013-06-19 中国第一汽车股份有限公司无锡油泵油嘴研究所 Multiple-injection control method for internal-combustion engine fuel system
CN107630752A (en) * 2016-07-19 2018-01-26 现代自动车株式会社 Predict the device of diesel engine pressure and the pressure prediction method using the device
CN106121846A (en) * 2016-08-15 2016-11-16 江西汇尔油泵油嘴有限公司 A kind of diesel engine fuel injecting control method

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