CN112228232B - Operation control method and device for vehicle engine - Google Patents
Operation control method and device for vehicle engine Download PDFInfo
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- CN112228232B CN112228232B CN202011112228.1A CN202011112228A CN112228232B CN 112228232 B CN112228232 B CN 112228232B CN 202011112228 A CN202011112228 A CN 202011112228A CN 112228232 B CN112228232 B CN 112228232B
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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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
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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
- F02D2200/023—Temperature of lubricating oil or working fluid
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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
- F02D2200/0414—Air temperature
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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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1012—Engine speed gradient
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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
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/501—Vehicle speed
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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
- F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
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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)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The embodiment of the invention discloses a method and a device for controlling the operation of a vehicle engine. The operation control method of the vehicle engine comprises the following steps: determining a first given rotational speed acceleration of the engine according to a first acceleration command signal generated by a running control device; if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine; if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as a target rotating speed acceleration; and determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration. According to the technical scheme provided by the embodiment of the invention, the rotating speed acceleration of the engine is limited under the conditions of low load and low vehicle speed, so that the increasing speed of the transient fuel injection quantity is limited, the combustion is more moderate and sufficient, and the purposes of energy conservation and emission reduction are achieved.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a method and a device for controlling the operation of a vehicle engine.
Background
In recent years, automobiles have become an indispensable vehicle. However, the automobile brings convenience to people's transportation and also brings huge energy consumption and pollutant discharge. The fuel consumption and emission of automobiles become one of the most important fuel consumption and pollution sources in cities, and the fuel consumption and emission of automobiles are widely concerned at home and abroad for improving environmental pollution, saving energy, reducing emission and low-carbon life. In addition to encouraging greater adoption of mass transit vehicles, reducing vehicle emissions has become a significant problem.
Disclosure of Invention
The embodiment of the invention provides an operation control method and device of a vehicle engine, which limit the rotating speed acceleration of the engine under the conditions of low load and low vehicle speed so as to limit the increasing speed of transient fuel injection quantity, enable combustion to be more moderate and sufficient, achieve the purposes of energy conservation and emission reduction, and solve the problems that when the load of the engine is smaller, a supercharger does not work basically, if the transient acceleration of the engine is overlarge, the fuel injection quantity is increased rapidly, so that the air intake quantity is insufficient, the combustion is insufficient, fuel oil is wasted, and the emission of soot and the like is increased.
In a first aspect, an embodiment of the present invention provides a method for controlling operation of a vehicle engine, including:
determining a first given rotational speed acceleration of the engine according to a first acceleration command signal generated by a running control device;
if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine;
if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as a target rotating speed acceleration;
and determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration.
Further, before comparing the first given rotational acceleration with the maximum rotational acceleration of the engine, the method further comprises:
establishing a corresponding relation between the load factor of the engine and the maximum rotating speed acceleration, wherein when the load factor of the engine is smaller than a preset load factor, the maximum rotating speed acceleration of the engine is increased along with the increase of the load factor of the engine;
and if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, determining the maximum rotating speed acceleration of the engine according to the current load rate of the engine and the corresponding relation between the load rate of the engine and the maximum rotating speed acceleration.
Further, if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, comparing the first given rotational speed acceleration with the maximum rotational speed acceleration of the engine includes:
if the current running speed of the vehicle is lower than the preset vehicle speed, and the current load rate of the engine is lower than the preset load rate, and at least one of the following conditions is met: and comparing the first given rotational speed acceleration with the maximum rotational speed acceleration of the engine if the air inlet temperature of the engine is greater than or equal to a first threshold value, the ambient temperature is greater than or equal to a second threshold value and the water temperature of the engine is less than or equal to a third threshold value.
Further, before comparing the first given rotational acceleration with the maximum rotational acceleration of the engine, the method further comprises:
if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, determining the maximum rotating speed acceleration of the engine according to the current load rate of the engine and at least one temperature parameter, wherein the at least one temperature parameter comprises: intake air temperature, ambient temperature, and water temperature.
Further, before determining the maximum rotational speed acceleration of the engine according to the current load rate of the engine and at least one temperature parameter, the method further comprises the following steps:
establishing a corresponding relation between the load factor of the engine and the first corrected maximum rotating speed acceleration;
establishing a corresponding relation between each temperature parameter and the second corrected maximum rotating speed and acceleration;
determining a maximum rotational acceleration of the engine based on the current load rate of the engine and the at least one temperature parameter comprises:
determining a first corrected maximum rotating speed acceleration corresponding to the current load rate of the engine according to the current load rate of the engine and the corresponding relation between the load rate of the engine and the first corrected maximum rotating speed acceleration;
for each temperature parameter, determining a second corrected maximum rotating speed acceleration corresponding to the current value of the temperature parameter according to the current value of the temperature parameter and the corresponding relation between the temperature parameter and the second corrected maximum rotating speed acceleration;
and taking the minimum value of the first corrected maximum rotating speed acceleration corresponding to the current load factor of the engine and the second corrected maximum rotating speed acceleration corresponding to the current value of each temperature parameter as the maximum rotating speed acceleration.
Further, the second corrected maximum rotational acceleration corresponding to the intake air temperature of the engine decreases as the intake air temperature of the engine increases;
the second corrected maximum rotational speed acceleration corresponding to the water temperature of the engine increases as the water temperature of the engine increases.
Further, the travel manipulation device includes: an accelerator pedal;
the current running speed of the vehicle is lower than the preset vehicle speed and comprises at least one of the following running states: the vehicle speed gear is zero and the vehicle is in a neutral state.
Further, the operation control method of the vehicle engine further includes:
if the current running speed of the vehicle is higher than the preset vehicle speed or the current load rate of the engine is higher than the preset load rate, taking the first given rotating speed acceleration as a target rotating speed acceleration;
and if the first given rotating speed acceleration is smaller than or equal to the maximum rotating speed acceleration of the engine, taking the first given rotating speed acceleration as the target rotating speed acceleration.
Further, the operation control method of the vehicle engine further includes:
and determining a second given rotating speed acceleration as the target rotating speed acceleration according to a second acceleration command signal generated by the automatic gearbox or the anti-lock brake system.
In a second aspect, an embodiment of the present invention further provides an operation control apparatus for a vehicle engine, including:
the first determining module is used for determining a first given rotating speed acceleration of the engine according to a first acceleration command signal generated by a running control device;
the comparison module is used for comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate;
the acceleration determining module is used for taking the maximum rotating speed acceleration of the engine as a target rotating speed acceleration if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine;
and the fuel injection quantity determining module is used for determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration.
According to the technical scheme of the embodiment of the invention, a first given rotating speed acceleration of an engine is determined according to a first acceleration command signal generated by a running control device; if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine; if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as a target rotating speed acceleration; the fuel injection quantity of an injector of the engine is determined according to the target rotating speed acceleration, the rotating speed acceleration of the engine is limited under the conditions of low load and low vehicle speed, so that the increasing speed of transient fuel injection quantity is limited, the combustion is more moderate and sufficient, the purposes of energy saving and emission reduction are achieved, and the problems that when the load of the engine is small, a supercharger does not work basically, if the transient acceleration of the engine is too large, the fuel injection quantity is increased rapidly, the air input is insufficient, the combustion is insufficient, fuel oil is wasted, and the emission of soot and the like is increased are solved.
Drawings
FIG. 1 is a flowchart of an operation control method of a vehicle engine according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an engine and supercharger connection provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of an internal structure of an engine according to an embodiment of the present invention;
FIG. 4 is a flowchart of a method for controlling operation of an engine of a vehicle according to another embodiment of the present invention;
FIG. 5 is a flowchart of a method for controlling operation of an engine of a vehicle according to another embodiment of the present invention;
FIG. 6 is a flowchart of a method for controlling the operation of a vehicle engine according to yet another embodiment of the present invention;
FIG. 7 is a flowchart of a method for controlling operation of an engine of a vehicle according to another embodiment of the present invention;
FIG. 8 is a flowchart of a method for controlling operation of an engine of a vehicle according to another embodiment of the present invention;
fig. 9 is a schematic structural diagram of an operation control device of a vehicle engine according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of an operation control device of a further vehicle engine according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another operation control device for a vehicle engine according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
The embodiment of the invention provides an operation control method of a vehicle engine. Fig. 1 is a flowchart of an operation control method of a vehicle engine according to an embodiment of the present invention. The method may be performed by an operation Control device of a vehicle engine, which may be implemented by software and/or hardware, and may be integrated in an Electronic Control Unit (ECU) of the engine. The operation control method of the vehicle engine specifically includes the steps of:
in step 110, a first predetermined rotational acceleration of the engine is determined based on a first acceleration command signal generated by the travel control device.
The driver can control the acceleration of the vehicle in the front-rear running movement by operating the running control device. Optionally, the driving operation device comprises: an accelerator pedal. The first acceleration command signal and the first given rotational speed acceleration may be previously established in correspondence to each other, so that when the driver manipulates the travel manipulation device, the first given rotational speed acceleration of the engine is determined based on the first acceleration command signal generated by the travel manipulation device and the correspondence between the first acceleration command signal and the first given rotational speed acceleration. For example, the greater the force of the driver on the accelerator pedal, the greater the first given rotational acceleration corresponding to the first acceleration command signal is generated. The engine may be used to provide power for towing the vehicle in a fore and aft travel movement.
And step 120, if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine.
Wherein the preset vehicle speed may be zero or a smaller vehicle speed. The load factor may be a ratio of a current torque of the engine to a maximum external characteristic torque that the engine reaches at the current speed. The preset vehicle speed and the preset load factor can be set according to requirements, but the preset vehicle speed and the preset load factor are not limited in the embodiment of the invention, and optionally, the preset load factor can be 20%. The current running speed of the vehicle is lower than the preset vehicle speed and comprises at least one of the following running states: the vehicle speed gear is zero and the vehicle is in a neutral state. A vehicle speed gear of zero corresponds to the clutch being in a disengaged state. The driver can also realize gear shifting operations such as gear shifting, gear shifting and the like by operating the gear control handle.
And step 130, if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as the target rotating speed acceleration.
And if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, limiting the rotating speed acceleration of the engine.
And step 140, determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration.
The larger the target rotational speed acceleration is, the larger the amount of fuel injected by the injector of the engine or the amount of increase in the amount of fuel injected is. The correspondence relationship between the target rotational speed acceleration and the amount of fuel injected by the injector of the engine or the amount of increase in the amount of fuel injected may be established in advance, so that the amount of fuel injected by the injector of the engine or the amount of increase in the amount of fuel injected may be determined based on the target rotational speed acceleration and the correspondence relationship between the target rotational speed acceleration and the amount of fuel injected by the injector of the engine or the amount of increase in the amount of fuel injected. After step 140, the vehicle speed and the load factor of the engine are slowly increased, the vehicle speed and the load factor of the engine may be continuously monitored, and step 120 may be performed again until the current running speed of the vehicle is higher than the preset vehicle speed, or the current load factor of the engine is higher than the preset load factor, the limitation on the rotational speed acceleration of the engine is removed, and the first given rotational speed acceleration is taken as the target rotational speed acceleration. Optionally, before step 110, a first acceleration command signal generated by the driving control device may be obtained at preset time intervals, so as to control the rotation speed and acceleration in real time according to the operation of the driver.
Fig. 2 is a schematic diagram of connection between an engine and a supercharger according to an embodiment of the present invention. Fig. 3 is a schematic diagram of an internal structure of an engine according to an embodiment of the present invention. The supercharger 3 may be powered by exhaust gases from the engine 1. The supercharger 3 may be an exhaust gas turbocharger, which may include a turbine 32 and a compressor 31, as shown in fig. 2. An intake port of the turbine 32 is connected to an exhaust port 13 of the engine, and an exhaust port of the turbine 32 is communicated with an intake port of the exhaust gas purification treatment device 4. An intake port of the compressor 31 is connected to the air cleaner 2, and an exhaust port of the compressor 31 communicates with the intake port 12 of the engine 1. Exhaust gas discharged from the engine 1 is introduced into the turbine 32, and the energy of the exhaust gas is used to rotate the turbine 32, thereby driving the compressor 31 coaxial with the turbine to achieve supercharging. When the load of the engine 1 is small and the vehicle speed is small, the exhaust gas discharged by the engine 1 is small at this time, and the supercharger 3 does not work basically, so the air inflow of the air inlet 12 of the engine 1 is insufficient, the transient fuel injection quantity of the injector 11 is limited by limiting the rotating speed acceleration of the engine, and the situations of insufficient combustion, fuel waste, increased emission of soot and the like caused by overlarge fuel injection quantity are avoided. The method is characterized in that the rotating speed acceleration of the engine is limited in the low-load and low-vehicle-speed states to limit the increasing speed of the transient fuel injection quantity, and after the vehicle speed and the load factor of the engine are increased, the limitation on the rotating speed acceleration of the engine is removed, so that the fuel injection quantity of the engine is matched with the speed of compressed air of a supercharger, the combustion is mild and sufficient, and the purposes of energy conservation and emission reduction are achieved.
In the technical scheme of the embodiment, a first given rotating speed acceleration of the engine is determined according to a first acceleration command signal generated by a running control device; if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine; if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as a target rotating speed acceleration; the fuel injection quantity of an injector of the engine is determined according to the target rotating speed acceleration, the rotating speed acceleration of the engine is limited under the conditions of low load and low vehicle speed, so that the increasing speed of transient fuel injection quantity is limited, the combustion is more moderate and sufficient, the purposes of energy saving and emission reduction are achieved, the problems that when the engine load is small, a supercharger does not work basically, if the transient acceleration of the engine is too large, the fuel injection quantity is increased rapidly, the air intake quantity is insufficient, the combustion is insufficient, fuel oil is wasted, and the emission of soot and the like is increased are solved, and the problems that the air intake quantity is reduced due to high temperature in summer and the soot is emitted when a passenger car starts in summer and the like are solved.
The embodiment of the invention provides another operation control method of a vehicle engine. Fig. 4 is a flowchart of another operation control method for a vehicle engine according to an embodiment of the present invention. On the basis of the above embodiment, the operation control method of the vehicle engine includes:
and step 210, establishing a corresponding relation between the load factor of the engine and the maximum rotating speed acceleration, wherein when the load factor of the engine is smaller than a preset load factor, the maximum rotating speed acceleration of the engine is increased along with the increase of the load factor of the engine.
The maximum rotating speed acceleration which enables the emission of the engine to meet the requirements can be debugged under different load rates through methods such as tests, and the corresponding relation between the load rate of the engine and the maximum rotating speed acceleration is established. The larger the load factor of the engine 1 is, the more the exhaust gas is discharged from the engine 1, the more the supercharger 3 compresses the air, and the more the intake air amount is taken into the intake port of the engine 1, so that the maximum rotational speed acceleration can be appropriately increased after the load factor of the engine 1 is gradually increased, the fuel injection amount of the injector 11 can be increased, and the acceleration time can be shortened while ensuring sufficient combustion.
In step 220, a first predetermined rotational acceleration of the engine is determined based on a first acceleration command signal generated by the travel control device.
And step 230, if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, determining the maximum rotating speed acceleration of the engine according to the current load rate of the engine and the corresponding relation between the load rate of the engine and the maximum rotating speed acceleration.
Wherein the larger the current load rate of the engine, the larger the maximum rotational speed acceleration of the engine may be. Step 240, comparing the first given rotational acceleration with the maximum rotational acceleration of the engine.
And step 250, if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as the target rotating speed acceleration.
And step 260, determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration.
After step 260, the vehicle speed and the load factor of the engine are slowly increased, the vehicle speed and the load factor of the engine can be continuously monitored, and the step 230 is executed again until the current running speed of the vehicle is higher than the preset vehicle speed or the current load factor of the engine is higher than the preset load factor, the limitation on the rotating speed acceleration of the engine is removed, and the first given rotating speed acceleration is used as the target rotating speed acceleration.
The magnitude of the actual rotational speed acceleration of the engine is determined by the output torque (related to the fuel injection quantity) and the actual load, and when the load factor is large, the actual rotational speed acceleration of the engine is not so large because the maximum output torque of the engine is limited, and the significance of whether the rotational speed acceleration of the engine is limited or not is small. When the load is large, the rotating speed acceleration is not limited any more, and the actual acceleration can be adjusted by the maximum output torque and the actual load. When the engine is in idle load or low load, the rotating speed acceleration of the engine can be limited; at high loads, for example greater than a predetermined load factor, the engine speed acceleration is determined by the ability of the engine to output torque and the actual load and is not limited. Under the condition that the engine is loaded, the rotating speed acceleration cannot be limited blindly (or the limit value needs to be adjusted in an adaptive mode), and the influence on the dynamic property of transient acceleration is avoided.
The embodiment of the invention provides another operation control method of a vehicle engine. Fig. 5 is a flowchart of another method for controlling the operation of a vehicle engine according to an embodiment of the present invention. On the basis of the above embodiment, the operation control method of the vehicle engine includes:
in step 310, a first predetermined rotational acceleration of the engine is determined based on a first acceleration command signal generated by the travel control device.
Step 320, if the current running speed of the vehicle is lower than the preset vehicle speed, and the current load rate of the engine is lower than the preset load rate, and at least one of the following conditions is met: and comparing the first given rotational speed acceleration with the maximum rotational speed acceleration of the engine if the air inlet temperature of the engine is greater than or equal to a first threshold value, the ambient temperature is greater than or equal to a second threshold value and the water temperature of the engine is less than or equal to a third threshold value.
Wherein, a throttle valve may be provided on an intake pipe connected to the intake port 12 of the engine. The intake air temperature may be a temperature of gas in a conduit between an engine throttle and an engine combustion chamber. The higher the intake temperature is, the less the intake mass of the air is, so that the lower the air concentration in the combustion chamber of the engine is, the more the engine is not beneficial to full combustion, and therefore, when the intake temperature of the engine is greater than or equal to a first threshold value, the increase speed of transient fuel injection quantity is limited by limiting the rotating speed acceleration of the engine, so that the combustion is more moderate and full, and the purposes of energy conservation and emission reduction are achieved. The ambient temperature is too high, and the intake mass of the compressed air of the supercharger is too little, so that the combustion is not beneficial to being sufficient, when the ambient temperature is greater than or equal to the second threshold value, the increase speed of the transient fuel injection quantity is limited by limiting the rotating speed acceleration of the engine, the combustion is more moderate and sufficient, and the purposes of energy conservation and emission reduction are achieved. The lower the water temperature of a cooling system of the engine is, the lower the temperature of the engine in the cylinder is during ignition is, the more unfavorable the sufficient combustion is, so that the increase speed of the transient fuel injection quantity can be limited by limiting the rotating speed acceleration of the engine when the water temperature of the engine is less than or equal to a third threshold value, the combustion is more moderate and sufficient, and the purposes of energy conservation and emission reduction are achieved. The first threshold, the second threshold, and the third threshold may be set as needed, which is not limited in the embodiment of the present invention. Alternatively, the first threshold may be 40 ℃. Alternatively, the second threshold may be 40 ℃. Alternatively, the third threshold may be 40 ℃.
And 330, if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as the target rotating speed acceleration.
And 340, determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration.
Wherein after step 340, the vehicle speed and the load rate of the engine slowly increase, the vehicle speed and the load rate of the engine may be continuously monitored, and step 320 may be executed again until at least one of the following conditions is satisfied: the current running speed of the vehicle is higher than the preset vehicle speed, the current load rate of the engine is higher than the preset load rate, the air inlet temperature of the engine is smaller than a first threshold value, the ambient temperature is smaller than a second threshold value, and the water temperature of the engine is larger than a third threshold value, the limitation on the rotating speed acceleration of the engine is removed, and the first given rotating speed acceleration is taken as the target rotating speed acceleration.
The embodiment of the invention provides another operation control method of a vehicle engine. Fig. 6 is a flowchart of still another method for controlling the operation of an engine of a vehicle according to an embodiment of the present invention. On the basis of the above embodiment, the operation control method of the vehicle engine includes:
in step 410, a first predetermined rotational acceleration of the engine is determined based on a first acceleration command signal generated by the travel control device.
Step 420, if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, determining the maximum rotating speed and acceleration of the engine according to the current load rate of the engine and at least one temperature parameter, wherein the at least one temperature parameter comprises: intake air temperature, ambient temperature, and water temperature.
However, the smaller the load of the engine 1, the smaller the exhaust gas discharged from the engine 1, the smaller the amount of air compressed by the supercharger 3, and the smaller the intake air amount of the intake port of the engine 1, the more unfavorable the combustion becomes. The higher the intake temperature, the less the intake mass of the air, resulting in a lower air concentration in the engine combustion chamber, which is more detrimental to combustion completeness. When the ambient temperature is too low, the temperature in the engine cylinder during ignition is too low, which is not favorable for full combustion, and white smoke (unburned oil molecules), black smoke and the like appear; when the ambient temperature is too high, the air inlet quality of the compressed air of the supercharger is too low, the combustion is not sufficient, and black smoke is generated. The lower the temperature of the cooling system of the engine, the lower the temperature at the time of ignition in the engine cylinder, and the more unfavorable the combustion becomes. The maximum rotating speed acceleration which enables the emission of the engine to meet the requirements can be debugged by methods such as tests under different load rates and temperature parameters, and the corresponding relation between the maximum rotating speed acceleration of the engine and the load rate and at least one temperature parameter of the engine is established in advance.
Step 430, comparing the first given acceleration of speed with the maximum acceleration of speed of the engine.
And step 440, if the first given rotation speed acceleration is larger than the maximum rotation speed acceleration of the engine, taking the maximum rotation speed acceleration of the engine as the target rotation speed acceleration.
And step 450, determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration.
After step 450, the vehicle speed and the load factor of the engine are slowly increased, the vehicle speed and the load factor of the engine can be continuously monitored, and the step 420 is executed again until the current running speed of the vehicle is higher than the preset vehicle speed or the current load factor of the engine is higher than the preset load factor, the limitation on the rotating speed acceleration of the engine is removed, and the first given rotating speed acceleration is taken as the target rotating speed acceleration.
The embodiment of the invention provides another operation control method of a vehicle engine. Fig. 7 is a flowchart of another method for controlling the operation of a vehicle engine according to an embodiment of the present invention. On the basis of the above embodiment, the operation control method of the vehicle engine includes:
and step 510, establishing a corresponding relation between the load factor of the engine and the first corrected maximum rotating speed acceleration.
Wherein, canThrough a method such as an experiment, under the condition that the values of all temperature parameters are not changed, such as the air inlet temperature of the engine is equal to a first threshold value, the ambient temperature is equal to a second threshold value and the water temperature of the engine is equal to a third threshold value, the corresponding relation between the load factor of the engine and the first corrected maximum rotating speed acceleration is established. Illustratively, the load factor of the engine and the first modified maximum acceleration of rotation a 1 See the following table for correspondence:
| load rate/%) | 0 | 10 | 20 | 40 | 70 | 90 |
| First corrected maximum rotational speed acceleration a 1 (rpm/s) | 200 | 300 | 400 | 600 | 800 | 400 |
And step 520, establishing a corresponding relation between each temperature parameter and the second corrected maximum rotating speed and acceleration.
Wherein, the intake temperature of the engine and the corresponding second corrected maximum rotating speed acceleration a can be respectively established by a method of experiment and the like under the condition that the load factor and the values of the other temperature parameters are kept unchanged, for example, the load factor is equal to the preset load factor 21 Establishing the ambient temperature of the engine and the corresponding second corrected maximum rotating speed acceleration a 22 Establishing the water temperature of the engine and the corresponding second corrected maximum rotating speed acceleration a 23 The corresponding relationship of (1). Optionally, a second corrected maximum rotational acceleration a corresponding to the intake air temperature of the engine 21 Decreases as the intake air temperature of the engine increases. Optionally, a second corrected maximum rotational speed acceleration a corresponding to the water temperature of the engine 23 Increases with the increase of the water temperature of the engine.
Illustratively, the intake air temperature of the engine corresponds to a second corrected maximum acceleration of rotation a 21 See the following table for correspondence:
| inlet air temperature/. Degree.C | 10 | 30 | 40 | 50 | 70 | 90 |
| Second corrected maximum rotational speed acceleration a 21 (rpm/s) | 1000 | 600 | 500 | 400 | 300 | 200 |
Illustratively, the ambient temperature of the engine corresponds to a second modified maximum acceleration of rotation a 22 See the following table for correspondence:
| ambient temperature/. Degree.C | -10 | 0 | 10 | 20 | 30 | 40 |
| Second corrected maximum rotational speed acceleration a 22 (rpm/s) | 300 | 600 | 500 | 1000 | 500 | 200 |
Illustratively, the water temperature of the engine and its corresponding second modified maximum acceleration of rotation a 23 See the following table for correspondence:
| water temperature/. Degree C | -30 | -10 | 10 | 30 | 50 | 80 |
| Second corrected maximum rotational speed acceleration a 23 (rpm/s) | 200 | 300 | 400 | 500 | 600 | 1000 |
In step 530, a first given rotational acceleration of the engine is determined based on a first acceleration command signal generated by the travel control device.
And 540, if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, determining a first corrected maximum rotating speed acceleration corresponding to the current load rate of the engine according to the current load rate of the engine and the corresponding relation between the load rate of the engine and the first corrected maximum rotating speed acceleration.
Illustratively, if the current load factor is 20%, the first corrected maximum rotational speed and acceleration a 1 At 400rpm/s.
And step 550, for each temperature parameter, determining a second corrected maximum rotating speed acceleration corresponding to the current value of the temperature parameter according to the current value of the temperature parameter and the corresponding relation between the temperature parameter and the second corrected maximum rotating speed acceleration.
Illustratively, if the current value of the intake air temperature of the engine is 30 ℃, the second corrected maximum rotational speed acceleration a corresponding thereto 21 Is 600rpm/s. If the current value of the environmental temperature of the engine is 10 ℃, the corresponding second corrected maximum rotating speed acceleration a 22 Is 500rpm/s. If the current value of the water temperature of the engine is 10 ℃, the corresponding second corrected maximum rotating speed acceleration a 23 Is 400rpm/s.
And step 560, taking the minimum value of the first corrected maximum rotating speed acceleration corresponding to the current load factor of the engine and the second corrected maximum rotating speed acceleration corresponding to the current value of each temperature parameter as the maximum rotating speed acceleration.
The temperature parameters include, for example: taking the intake air temperature, the ambient temperature and the water temperature as examples, the maximum rotational speed acceleration a = min { a } 1 ，a 21 ，a 22 ，a 23 }。
And step 570, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine.
And 580, if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as the target rotating speed acceleration.
And step 590, determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration.
The embodiment of the invention provides another operation control method of a vehicle engine. Fig. 8 is a flowchart of another method for controlling the operation of a vehicle engine according to an embodiment of the present invention. On the basis of the above embodiment, the operation control method of the vehicle engine includes:
in step 610, a first given rotational speed acceleration of the engine is determined based on a first acceleration command signal generated by the travel control device.
And step 620, judging whether the current running speed of the vehicle is lower than a preset vehicle speed.
If the current running speed of the vehicle is lower than the preset vehicle speed, executing step 630; if the current running speed of the vehicle is higher than the preset vehicle speed, step 660 is executed.
And step 630, judging whether the current load rate of the engine is lower than a preset load rate.
If the current load rate of the engine is lower than the preset load rate, executing step 640; if the current load rate of the engine is higher than the preset load rate, step 660 is executed.
And step 640, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine.
If the first given rotational speed acceleration is greater than the maximum rotational speed acceleration of the engine, step 650 is executed; if the first given acceleration is less than or equal to the maximum acceleration of the engine, step 660 is performed.
Step 650, taking the maximum rotation speed acceleration of the engine as the target rotation speed acceleration
And 660, taking the first given rotating speed acceleration as a target rotating speed acceleration.
And step 670, determining a second given rotating speed acceleration as a target rotating speed acceleration according to a second acceleration command signal generated by the automatic gearbox or the anti-lock brake system.
Among them, an automatic transmission, an antilock brake system, an ECU of a vehicle network, and the like are involved in safety issues and the like, and since control commands generated by the automatic transmission, the antilock brake system, the ECU of the vehicle network, and the like have a high priority, the rotational speed and acceleration of an engine are not limited.
And step 680, determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration.
It should be noted that step 620 may be executed before step 630, and may also be executed after step 630, which in any case satisfies: if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine; and if the current running speed of the vehicle is higher than the preset vehicle speed or the current load rate of the engine is higher than the preset load rate, taking the first given rotating speed acceleration as the target rotating speed acceleration.
The Power Take Off (PTO) mode is different from a Power transmission mode in which an engine-clutch-gearbox-axle-tire-driven vehicle longitudinally runs, and the PTO transmits Power in parallel through a flywheel, a gear and the like, for example, the Power is transmitted to a stirring tank on a cement stirring truck (the stirring tank needs to keep rotating, the Power is not interrupted and the rotating speed is adjustable when the vehicle runs or is stationary), and the rotating speed is generally taken as a control target. The rear Power Take Off (PTO) mode also includes a remote throttle control mode, and it is more common for a crane to shield a lower vehicle throttle (a throttle for driving the vehicle to move) when the vehicle is stationary, and then use the throttle (i.e. remote throttle) of a hoisting operation room to perform hoisting operation, generally taking the rotating speed as a control target. The load of the PTO mode is not related to the vehicle speed, etc., and the PTO mode may pursue a high rotational acceleration of the empty vehicle, so that it is not necessary to limit the rotational acceleration of the engine.
The embodiment of the invention provides an operation control device of a vehicle engine. Fig. 9 is a schematic structural diagram of an operation control device of a vehicle engine according to an embodiment of the present invention. The operation control device of the vehicle engine may be used to execute the operation control method of the vehicle engine provided in any embodiment of the invention. The operation control device for the vehicle engine includes: a first determination module 710, a comparison module 720, an acceleration determination module 730, and an injection determination module 740.
The first determining module 710 is used for determining a first given rotation speed acceleration of the engine according to a first acceleration command signal generated by a running control device; the comparison module 720 is configured to compare the first given rotational speed acceleration with the maximum rotational speed acceleration of the engine if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate; the acceleration determining module 730 is configured to take the maximum rotational speed acceleration of the engine as a target rotational speed acceleration if the first given rotational speed acceleration is greater than the maximum rotational speed acceleration of the engine; the injection determination module 740 is configured to determine an injection of an injector of the engine based on the target rotational speed acceleration.
The operation control device for a vehicle engine according to the embodiment of the present invention may be used to execute the operation control method for a vehicle engine according to any embodiment of the present invention, and therefore, the operation control device for a vehicle engine according to the embodiment of the present invention also has the beneficial effects described in the above embodiments, and details are not repeated herein.
Optionally, on the basis of the foregoing embodiment, fig. 10 is a schematic structural diagram of a further operation control device for a vehicle engine according to an embodiment of the present invention, where the operation control device for a vehicle engine further includes: a first relationship establishing module 750 and a second determining module 760, wherein the first relationship establishing module 750 is configured to establish a corresponding relationship between a load factor of the engine and a maximum rotational speed acceleration of the engine before the comparing module 720 compares the first given rotational speed acceleration and the maximum rotational speed acceleration of the engine, and the maximum rotational speed acceleration of the engine increases with the increase of the load factor of the engine when the load factor of the engine is smaller than a preset load factor; the second determining module 760 is configured to determine the maximum rotational speed and acceleration of the engine according to the current load rate of the engine and the corresponding relationship between the load rate and the maximum rotational speed and acceleration of the engine if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate.
Optionally, on the basis of the foregoing embodiment, the comparing module 720 is configured to, if the current running speed of the vehicle is lower than the preset vehicle speed, and the current load rate of the engine is lower than the preset load rate, and at least one of the following conditions is met: and comparing the first given rotational speed acceleration with the maximum rotational speed acceleration of the engine if the air inlet temperature of the engine is greater than or equal to a first threshold value, the ambient temperature is greater than or equal to a second threshold value and the water temperature of the engine is less than or equal to a third threshold value.
Optionally, on the basis of the foregoing embodiment, fig. 11 is a schematic structural diagram of a further operation control device for a vehicle engine according to an embodiment of the present invention, where the operation control device for a vehicle engine further includes: a third determining module 770, configured to determine the maximum rotational acceleration of the engine according to the current load rate of the engine and at least one temperature parameter before the comparing module 720 compares the first given rotational acceleration with the maximum rotational acceleration of the engine, if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, where the at least one temperature parameter includes: intake air temperature, ambient temperature, and water temperature.
Optionally, on the basis of the above embodiment, the operation control device of the vehicle engine further includes: a second relationship establishing module 780 and a third relationship establishing module 790, wherein the second relationship establishing module 780 is configured to establish a corresponding relationship between the load factor of the engine and the first modified maximum rotational speed acceleration before the third determining module 770 determines the maximum rotational speed acceleration of the engine according to the current load factor of the engine and the at least one temperature parameter; the third relationship establishing module 790 is used for establishing the corresponding relationship between each temperature parameter and the second corrected maximum rotating speed and acceleration before the third determining module 770 determines the maximum rotating speed and acceleration of the engine according to the current load rate of the engine and at least one temperature parameter. The third determining module 770 includes a first determining unit 771, a second determining unit 772 and a minimum calculating unit 773, where the first determining unit 771 is configured to determine a first corrected maximum rotation speed acceleration corresponding to the current load rate of the engine according to the current load rate of the engine and a corresponding relationship between the load rate of the engine and the first corrected maximum rotation speed acceleration; the second determining unit 772 is configured to determine, for each temperature parameter, a second corrected maximum rotational speed and acceleration corresponding to the current value of the temperature parameter according to the current value of the temperature parameter and the corresponding relationship between the temperature parameter and the second corrected maximum rotational speed and acceleration; the minimum value calculating unit 773 is configured to use the minimum value of the first corrected maximum rotational acceleration corresponding to the current load factor of the engine and the second corrected maximum rotational acceleration corresponding to the current value of each temperature parameter as the maximum rotational acceleration.
Alternatively, the second corrected maximum acceleration of speed corresponding to the intake air temperature of the engine decreases as the intake air temperature of the engine increases.
Optionally, the second corrected maximum rotational speed acceleration corresponding to the water temperature of the engine increases with an increase in the water temperature of the engine.
Optionally, the driving operation device comprises: an accelerator pedal.
Optionally, the current running speed of the vehicle is lower than the preset vehicle speed, and the current running speed of the vehicle comprises at least one of the following running states: the vehicle speed gear is zero and the vehicle is in a neutral state.
Alternatively, with continued reference to fig. 11 on the basis of the above-described embodiment, the operation control device of the vehicle engine further includes: a fourth determining module 800, configured to take the first given rotational speed acceleration as a target rotational speed acceleration if a current running speed of the vehicle is higher than a preset vehicle speed, or a current load rate of the engine is higher than a preset load rate;
alternatively, with continued reference to fig. 11 on the basis of the above-described embodiment, the operation control device of the vehicle engine further includes: the fifth determination module 810 is configured to use the first given rotational speed acceleration as the target rotational speed acceleration if the first given rotational speed acceleration is less than or equal to a maximum rotational speed acceleration of the engine.
Alternatively, with continued reference to fig. 11, based on the above embodiment, the apparatus for controlling the operation of the engine of the vehicle further includes a sixth determining module 820 for determining a second given rotational speed acceleration as the target rotational speed acceleration based on a second acceleration command signal generated by the automatic transmission or the antilock brake system.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (7)
1. An operation control method of a vehicle engine, characterized by comprising:
determining a first given rotating speed acceleration of the engine according to a first acceleration command signal generated by a running control device;
if the current running speed of the vehicle is lower than a preset vehicle speed and the current load rate of the engine is lower than a preset load rate, comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine;
if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine, taking the maximum rotating speed acceleration of the engine as a target rotating speed acceleration;
determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration;
before comparing the first given acceleration of rpm with the maximum acceleration of rpm of the engine, further comprising:
if the current running speed of the vehicle is lower than a preset vehicle speed and the current load rate of the engine is lower than a preset load rate, determining the maximum rotating speed acceleration of the engine according to the current load rate of the engine and at least one temperature parameter, wherein the at least one temperature parameter comprises: intake air temperature, ambient temperature, and water temperature;
before determining the maximum rotation speed acceleration of the engine according to the current load rate and at least one temperature parameter of the engine, the method further comprises the following steps:
establishing a corresponding relation between the load factor of the engine and a first corrected maximum rotating speed acceleration;
establishing a corresponding relation between each temperature parameter and a second corrected maximum rotating speed acceleration;
determining a maximum acceleration of speed of the engine based on the current load rate of the engine and at least one temperature parameter comprises:
determining a first corrected maximum rotating speed acceleration corresponding to the current load rate of the engine according to the current load rate of the engine and the corresponding relation between the load rate of the engine and the first corrected maximum rotating speed acceleration;
for each temperature parameter, determining a second corrected maximum rotating speed acceleration corresponding to the current value of the temperature parameter according to the current value of the temperature parameter and the corresponding relation between the temperature parameter and the second corrected maximum rotating speed acceleration;
taking the minimum value of the first corrected maximum rotating speed acceleration corresponding to the current load rate of the engine and the second corrected maximum rotating speed acceleration corresponding to the current value of each temperature parameter as the maximum rotating speed acceleration;
wherein the second corrected maximum rotational acceleration corresponding to the intake air temperature of the engine decreases as the intake air temperature of the engine increases;
the second corrected maximum rotational speed acceleration corresponding to the water temperature of the engine increases as the water temperature of the engine increases.
2. The running control method of a vehicle engine according to claim 1, characterized by further comprising, before comparing the first given rotational acceleration and the maximum rotational acceleration of the engine:
establishing a corresponding relation between the load factor of the engine and the maximum rotating speed acceleration, wherein when the load factor of the engine is smaller than the preset load factor, the maximum rotating speed acceleration of the engine is increased along with the increase of the load factor of the engine;
and if the current running speed of the vehicle is lower than the preset vehicle speed and the current load rate of the engine is lower than the preset load rate, determining the maximum rotating speed acceleration of the engine according to the current load rate of the engine and the corresponding relation between the load rate of the engine and the maximum rotating speed acceleration.
3. The operation control method of the vehicle engine according to claim 1, characterized in that if the current running speed of the vehicle is lower than a preset vehicle speed and the current load factor of the engine is lower than a preset load factor, comparing the first given rotational acceleration and the maximum rotational acceleration of the engine includes:
if the current running speed of the vehicle is lower than the preset vehicle speed, and the current load rate of the engine is lower than the preset load rate, and at least one of the following conditions is met: and if the air inlet temperature of the engine is greater than or equal to a first threshold value, the ambient temperature is greater than or equal to a second threshold value and the water temperature of the engine is less than or equal to a third threshold value, comparing the first given rotational speed acceleration with the maximum rotational speed acceleration of the engine.
4. The running control method of a vehicle engine according to claim 1, characterized in that the running manipulation device includes: an accelerator pedal;
the current running speed of the vehicle is lower than the preset vehicle speed and comprises at least one of the following running states: the vehicle speed gear is zero and the vehicle is in a neutral state.
5. The operation control method of the vehicle engine according to claim 1, characterized by further comprising:
if the current running speed of the vehicle is higher than a preset vehicle speed, or the current load rate of the engine is higher than a preset load rate, taking the first given rotating speed acceleration as a target rotating speed acceleration;
and if the first given rotating speed acceleration is smaller than or equal to the maximum rotating speed acceleration of the engine, taking the first given rotating speed acceleration as a target rotating speed acceleration.
6. The operation control method of the vehicle engine according to claim 1, characterized by further comprising:
and determining a second given rotating speed acceleration as a target rotating speed acceleration according to a second acceleration command signal generated by the automatic gearbox or the anti-lock braking system.
7. An operation control device of a vehicle engine, characterized by comprising:
the first determining module is used for determining a first given rotating speed acceleration of the engine according to a first acceleration command signal generated by a running control device;
the comparison module is used for comparing the first given rotating speed acceleration with the maximum rotating speed acceleration of the engine if the current running speed of the vehicle is lower than a preset vehicle speed and the current load rate of the engine is lower than a preset load rate;
the acceleration determining module is used for taking the maximum rotating speed acceleration of the engine as a target rotating speed acceleration if the first given rotating speed acceleration is larger than the maximum rotating speed acceleration of the engine;
the fuel injection quantity determining module is used for determining the fuel injection quantity of an injector of the engine according to the target rotating speed acceleration;
the operation control device further includes: a third determining module, configured to determine a maximum rotational speed acceleration of the engine according to a current load rate of the engine and at least one temperature parameter before the comparing module compares the first given rotational speed acceleration with the maximum rotational speed acceleration of the engine, if the current running speed of the vehicle is lower than a preset vehicle speed and the current load rate of the engine is lower than a preset load rate, where the at least one temperature parameter includes: intake air temperature, ambient temperature, and water temperature;
the operation control device further includes: the second relation establishing module is used for establishing a corresponding relation between the load rate of the engine and the first corrected maximum rotating speed acceleration before the third determining module determines the maximum rotating speed acceleration of the engine according to the current load rate and at least one temperature parameter of the engine; the third relation establishing module is used for establishing a corresponding relation between each temperature parameter and a second corrected maximum rotating speed acceleration before the third determining module determines the maximum rotating speed acceleration of the engine according to the current load rate and at least one temperature parameter of the engine; the third determination module comprises a first determination unit, a second determination unit and a minimum value calculation unit, wherein the first determination unit is used for determining a first corrected maximum rotating speed acceleration corresponding to the current load rate of the engine according to the current load rate of the engine and the corresponding relation between the load rate of the engine and the first corrected maximum rotating speed acceleration; the second determining unit is used for determining a second corrected maximum rotating speed acceleration corresponding to the current value of the temperature parameter according to the current value of the temperature parameter and the corresponding relation between the temperature parameter and the second corrected maximum rotating speed acceleration for each temperature parameter; the minimum value obtaining unit is used for taking the minimum value in the first corrected maximum rotating speed acceleration corresponding to the current load rate of the engine and the second corrected maximum rotating speed acceleration corresponding to the current value of each temperature parameter as the maximum rotating speed acceleration;
wherein the second corrected maximum rotational acceleration corresponding to the intake air temperature of the engine decreases as the intake air temperature of the engine increases;
the second corrected maximum rotational speed acceleration corresponding to the water temperature of the engine increases as the water temperature of the engine increases.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004218780A (en) * | 2003-01-16 | 2004-08-05 | Toyota Motor Corp | Control device of automatic transmission for diesel engine |
| JP4905213B2 (en) * | 2007-03-28 | 2012-03-28 | マツダ株式会社 | Diesel engine control device |
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