CN117536720A - Method, device, equipment and medium for adjusting engine rotation speed - Google Patents
Method, device, equipment and medium for adjusting engine rotation speed Download PDFInfo
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- CN117536720A CN117536720A CN202311484462.0A CN202311484462A CN117536720A CN 117536720 A CN117536720 A CN 117536720A CN 202311484462 A CN202311484462 A CN 202311484462A CN 117536720 A CN117536720 A CN 117536720A
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000002347 injection Methods 0.000 claims abstract description 47
- 239000007924 injection Substances 0.000 claims abstract description 47
- 239000000446 fuel Substances 0.000 claims abstract description 43
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 238000004590 computer program Methods 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/08—Introducing corrections for particular operating conditions for idling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
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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
- F02D2200/101—Engine speed
Abstract
The invention discloses a method, a device, equipment and a medium for regulating the rotating speed of an engine, wherein the method comprises the following steps: calculating the expected air inflow under the idle working condition based on the initial oil injection quantity of the engine under the idle working condition; when the current air inflow of the engine is larger than the expected air inflow, the idle speed of the engine is reduced by a preset amplitude, the current speed of the engine is obtained, whether the current speed is larger than the limiting speed is judged, and when the current speed is larger than the limiting speed, the step of obtaining the current air inflow of the engine is returned; when the current air inflow of the engine is smaller than or equal to the expected air inflow or the current rotating speed is smaller than or equal to the limiting rotating speed, taking the sum of the current rotating speed and the preset amplitude as the set rotating speed of the engine under the idle working condition; when the initial air inflow is smaller than or equal to the expected air inflow, the initial rotating speed of the engine is taken as the set rotating speed of the engine under the idle working condition. The fuel consumption is reduced while the dynamic performance is ensured, and the economic benefit is improved.
Description
Technical Field
The present invention relates to the field of vehicle technologies, and in particular, to a method, an apparatus, a device, and a medium for adjusting an engine speed.
Background
According to market interview, the idle speed ratio is very high in the actual running process of a part of the whole vehicle, for example, the idle speed of a logistics vehicle is as long as 2-3 hours when loading and unloading is carried out, and the idle speed value of an engine is higher in a cold state and lower in a heat engine state and fixed in the idle running process, so that the calibration has the advantages of being capable of quickly heating the engine and keeping stable rotation speed control, and the defects of being incapable of controlling the rotation speed along with the load, being higher in oil consumption and large in noise.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for regulating the rotating speed of an engine, which are used for solving the problems of high oil consumption and high noise when the engine runs at idle speed in the related technology.
According to a first aspect of the present invention, there is provided a method of adjusting an engine speed, comprising:
calculating the expected air inflow under the idle working condition based on the initial oil injection quantity of the engine under the idle working condition, wherein the expected air inflow can meet the starting power requirement of the whole vehicle;
acquiring the current air inflow of the engine; judging whether the current air inflow is larger than the expected air inflow or not;
when the current air inflow of the engine is larger than the expected air inflow, reducing the idle speed of the engine by a preset amplitude, acquiring the current speed of the engine, judging whether the current speed is larger than a limiting speed, and returning to the step of acquiring the current air inflow of the engine when the current speed is larger than the limiting speed;
when the current air inflow of the engine is smaller than or equal to the expected air inflow or the current rotating speed is smaller than or equal to the limiting rotating speed, taking the sum of the current rotating speed and the preset amplitude as the set rotating speed of the engine under the idle working condition; and when the initial air inflow is smaller than or equal to the expected air inflow, taking the initial rotating speed of the engine as the set rotating speed of the engine under the idle working condition.
Optionally, the calculating the expected air intake amount under the idle working condition based on the initial fuel injection amount of the engine under the idle working condition comprises:
the expected air inflow is the product of the initial oil injection quantity and a first parameter, a second parameter and a first constant;
the first parameter is a preset excess air coefficient when the reserve torque is reached, the second parameter is a calibrated multiple of the fuel injection quantity and the initial fuel injection quantity when the reserve torque is reached, and the first constant is an air-fuel ratio; the first parameter is greater than 1 and less than an actual excess air ratio of the engine under idle conditions, and the second parameter is greater than 1.
Optionally, after obtaining the set rotation speed of the engine under the idle working condition, the method further comprises:
judging whether a clutch signal is received or not;
when no clutch signal is received, maintaining the set rotating speed of the engine under the idle working condition;
and when the clutch signal is received, the set rotating speed of the engine under the idle working condition is restored to the initial rotating speed.
Optionally, before the engine enters the initial fuel injection amount under the idle working condition, the method further comprises:
acquiring a current speed, a current clutch signal, a current accelerator gear and a current hand brake signal of the engine-driven vehicle;
judging whether the engine enters an idle working condition, and when the current vehicle speed is not 0, or the current clutch signal is not 0, or the current accelerator gear is not 0, or the current hand brake signal is 0, not entering the idle working condition;
when the current vehicle speed is 0, the current clutch signal is 0, the current accelerator gear is 0, and the current hand brake signal is not 0, the engine enters an idle working condition.
According to a second aspect of the present invention, there is provided an engine speed adjusting device comprising:
the expected air inflow calculation module is used for calculating the expected air inflow under the idle working condition based on the initial oil injection quantity of the engine under the idle working condition, and the expected air inflow can meet the starting power requirement of the whole vehicle;
an acquisition module for acquiring a current air inflow of the engine;
the first judging module is used for judging whether the current air inflow is larger than the expected air inflow or not; when the current air inflow of the engine is larger than the expected air inflow, reducing the idle speed of the engine by a preset amplitude, acquiring the current speed of the engine, judging whether the current speed is larger than a limiting speed, and returning to the step of acquiring the current air inflow of the engine when the current speed is larger than the limiting speed;
the judging module is further used for taking the sum of the current rotating speed and the preset amplitude as the set rotating speed of the engine under the idle working condition when the current air inflow of the engine is smaller than or equal to the expected air inflow or the current rotating speed is smaller than or equal to the limit rotating speed; and when the initial air inflow is smaller than or equal to the expected air inflow, taking the initial rotating speed of the engine as the set rotating speed of the engine under the idle working condition.
Optionally, the desired intake air amount is a product of the initial fuel injection amount and a first parameter, a second parameter, and a first constant;
the first parameter is a preset excess air coefficient when the reserve torque is reached, the second parameter is a calibrated multiple of the fuel injection quantity and the initial fuel injection quantity when the reserve torque is reached, and the first constant is an air-fuel ratio; the first parameter is greater than 1 and less than an actual excess air ratio of the engine under idle conditions, and the second parameter is greater than 1.
Optionally, the method further comprises:
the second judging module is used for judging whether the clutch signal is received or not;
when no clutch signal is received, maintaining the set rotating speed of the engine under the idle working condition;
and when the clutch signal is received, the set rotating speed of the engine under the idle working condition is restored to the initial rotating speed.
Optionally, the method further comprises:
the acquisition module is also used for acquiring the current speed, the current clutch signal, the current accelerator gear and the current hand brake signal of the engine-driven vehicle;
the third judging module is used for judging whether the engine enters an idle working condition, and when the current vehicle speed is not 0, or the current clutch signal is not 0, or the current accelerator gear is not 0, or the current hand brake signal is 0, the engine does not enter the idle working condition;
when the current vehicle speed is 0, the current clutch signal is 0, the current accelerator gear is 0, and the current hand brake signal is not 0, the engine enters an idle working condition.
According to a third aspect of the present invention, there is provided an electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of regulating engine speed according to any one of the embodiments of the present invention.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to execute a method of adjusting an engine speed according to any one of the embodiments of the present invention.
According to the technical scheme, the rotation speed of the engine is adjusted and reduced, so that the current air inflow is reduced, oil consumption and noise are reduced, meanwhile, the current air inflow is compared with the set expected air inflow, the current air inflow is not lower than the expected air inflow, and the black smoke of the engine and the power shortage during restarting are avoided. Meanwhile, the rotating speed of the engine is ensured to be above the limiting rotating speed, so that the normal mechanical performance of the vehicle engine is ensured.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and 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 a method for regulating engine speed according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for regulating engine speed in accordance with one embodiment of the present invention;
FIG. 3 is a flow chart of a method for regulating engine speed in accordance with another embodiment of the present invention;
fig. 4 is a schematic structural view of an electronic device implementing a method of adjusting engine speed according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a method for adjusting engine speed according to an embodiment of the present invention. As shown in fig. 1, the adjustment method includes:
s101, calculating the expected air inflow under an idle working condition based on the initial oil injection quantity of the engine under the idle working condition, wherein the expected air inflow can meet the starting power requirement of the whole vehicle;
wherein, when the vehicle is to be started, the intake air amount of the engine is in a state where the intake air amount is desired, and black smoke of insufficient combustion does not occur. The desired intake air amount is set in association with the model of the engine and the initial fuel injection amount when the engine enters the idle condition. The initial fuel injection amount can be measured by an associated sensor on the engine.
According to one embodiment of the present invention, calculating the desired intake air amount in the idle condition based on the initial fuel injection amount of the engine in the idle condition includes:
the expected air inflow is the product of the initial oil injection quantity and the first parameter, the second parameter and the first constant;
the first parameter is a preset excess air coefficient when the reserve torque is reached, the second parameter is a calibrated multiple of the fuel injection quantity and the initial fuel injection quantity when the reserve torque is reached, and the first constant is the air-fuel ratio; the first parameter is greater than 1 and less than the actual excess air ratio of the engine during idle conditions, and the second parameter is greater than 1.
That is, the desired intake air amount=first parameter×second parameter×initial fuel injection amount×first constant;
the first parameter may be an actual air excess factor greater than 1 but less than the engine entering idle condition, and if the actual air excess factor is 3.2, the first parameter may be any value between 1 and 3.2, and is 2. The second parameter is a calibration multiple of the fuel injection quantity when the reserve torque is reached and the initial fuel injection quantity, and the fuel injection quantity when the reserve torque is reached is the fuel injection quantity which can start the whole vehicle, so that the fuel injection quantity needs to be larger than the initial fuel injection quantity, namely the second parameter is larger than 1, and the second parameter can be 3. The first constant is the air-fuel ratio, i.e., 14.5. It is understood that the first parameter and the second parameter may be empirical values, and that only the desired intake air amount that is required to be obtained may be sufficient to satisfy both the minimum starting dynamics requirement and the absence of smoldering combustion. According to different types of the engine, different initial oil injection amounts of the engine when the engine enters an idle working condition can be obtained, and corresponding first parameters and second parameters can be obtained according to empirical values or related tests. When the model of the engine is determined, the first parameter and the second parameter are determined.
S102, acquiring the current air inflow of an engine;
wherein the current intake air amount can be detected according to a related sensor on the engine.
S103, judging whether the current air inflow is larger than the expected air inflow or not;
s104, when the current air inflow of the engine is larger than the expected air inflow, reducing the idle speed of the engine by a preset amplitude, acquiring the current speed of the engine, judging whether the current speed is larger than the limiting speed, and returning to the step of acquiring the current air inflow of the engine when the current speed is larger than the limiting speed;
s105, when the current air inflow of the engine is smaller than or equal to the expected air inflow or the current rotating speed is smaller than or equal to the limiting rotating speed, taking the sum of the current rotating speed and the preset amplitude as the set rotating speed of the engine under the idle working condition; when the initial air inflow is smaller than or equal to the expected air inflow, the initial rotating speed of the engine is taken as the set rotating speed of the engine under the idle working condition.
Wherein the limiting rotational speed is the lowest rotational speed that meets the mechanical properties of the engine.
That is, after the engine enters the idle condition and the desired intake air amount of the engine is determined, the current intake air amount of the engine is detected, wherein if the initial intake air amount is smaller than or equal to the desired intake air amount, the initial rotation speed of the engine entering the idle condition can be maintained. If the initial air inflow is larger than the expected air inflow, the initial rotating speed is reduced by a preset amplitude, the current rotating speed of the engine is obtained, then whether the current rotating speed is lower than the limiting rotating speed is judged, if the current rotating speed is lower than the limiting rotating speed, the current rotating speed cannot meet the mechanical performance of the engine, and further the previous rotating speed of the engine is required to be used as the set rotating speed of the engine under the idle working condition, namely the current rotating speed is increased again by the preset amplitude to be used as the set rotating speed. If the engine speed is higher than the limit rotation speed, the step of initially detecting the current air input of the engine can be returned to perform circulation.
When the current intake air amount is smaller than or equal to the desired intake air amount, after the engine speed is reduced before the description, the current intake air amount is lower than the desired intake air amount, the combustion requirement cannot be met, and then the current speed is increased again by the preset amplitude to serve as the set speed. When the current intake air amount is larger than the desired intake air amount, the rotation speed of the engine is continuously reduced with reference to the aforementioned cycle.
Illustratively, the initial intake air amount is A, the desired intake air amount is B, the preset amplitude is 15r/s, the initial rotation speed is 800r/s, and the limit rotation speed is 510r/s (this value is an empirical value). When A > B, for 800r/s-15r/s, 785r/s >510r/s. Further, the current intake air amount C is obtained, and when C > B, 785r/s-15r/s is changed to 770r/s >510r/s. And continuously acquiring the current air inflow D, and when D is less than B, taking 770 r/s+15r/s=785r/s as the set rotating speed of the engine under the idle working condition, and maintaining. In this process, although the current intake air amount is larger than the desired intake air amount, after the deceleration, it is found that the current rotation speed becomes 500r/s smaller than 510r/s, and then 500 r/s+15r/s=515 r/s is required as the set rotation speed under the idling condition of the engine and is maintained. In general, the current intake air amount varies according to the adjustment of the rotation speed of the engine, whether the rotation speed of the engine can be reduced is determined by monitoring whether the current intake air amount is greater than the desired intake air amount, and after the rotation speed is reduced, whether the rotation speed exceeds a limit value is determined to determine whether to continue to reduce the rotation speed of the engine. In this cycle, the deceleration cycle is exited immediately after detecting that the current rotation speed does not exceed the limit value, but immediately after detecting that the current intake air amount is smaller than or equal to the desired intake air amount, or immediately after detecting that the current rotation speed exceeds the limit value, although the current intake air amount is larger than the desired intake air amount.
Therefore, through the logic control, the full combustion can be ensured, the oil consumption can be reduced, the noise of the engine in idle working conditions can be reduced, the mechanical property of the engine is not influenced, certain power can be stored in advance on the basis, and the starting capability at any time is further maintained.
Optionally, after obtaining the set rotation speed of the engine under the idle condition, the method further comprises:
judging whether a clutch signal is received or not;
when the clutch signal is not received, maintaining the set rotating speed of the engine under the idle working condition;
and when the clutch signal is received, the set rotating speed of the engine under the idle working condition is restored to the initial rotating speed.
Wherein the clutch signal may be detected by an associated sensor on the vehicle. After the above-described adjustment of the idle rotation speed of the engine, if the vehicle is always in the idle condition, the set rotation speed may be maintained. If the vehicle generates a clutch signal, the vehicle is started, and at the moment, the set rotating speed is restored to the initial rotating speed under the idle working condition, so that the vehicle is ready to be started. Therefore, the set rotating speed can meet the requirement of energy saving and noise reduction in idle running, and the corresponding oil injection quantity of the set rotating speed can also meet the dynamic property in starting, namely the oil injection quantity at the moment can meet the requirement of starting and accelerating.
Optionally, before the initial fuel injection amount based on the engine entering the idle condition, the method further comprises:
acquiring a current speed, a current clutch signal, a current accelerator gear and a current hand brake signal of an engine-driven vehicle;
judging whether the engine enters an idle working condition, and when the current vehicle speed is not 0, or the current clutch signal is not 0, or the current accelerator gear is not 0, or the current hand brake signal is 0, not entering the idle working condition;
when the current vehicle speed is 0, the current clutch signal is 0, the current accelerator gear is 0, and the current hand brake signal is not 0, the engine enters an idle working condition.
It can be understood that the current vehicle speed, the current clutch signal, the current throttle gear, the current hand brake signal and the current rotating speed of the engine can be read through corresponding sensors or can be directly obtained from a whole vehicle controller. The current vehicle speed is O, namely whether the current vehicle has a vehicle speed, wherein 0 has a unit of m/s, and if the current vehicle speed is greater than 0, the current vehicle speed has a vehicle speed. Whether the clutch signal is 0 means whether the driver has an intention to start the vehicle, wherein 0 is a determination signal, if the clutch signal is 0, there is no clutch signal, and if the clutch signal is 1, there is a clutch signal. Whether the accelerator gear is 0 refers to whether the driver has an intention to start the vehicle, i.e., whether the driver steps on the accelerator to engage the gear, if 0, the gear is not engaged, and if not 0, the gear is engaged, if 1. Whether the hand brake signal is 0 or not means whether to pull the hand brake, if the hand brake signal is 0, the hand brake is retracted, if the hand brake signal is 1, the hand brake is pulled up to brake, and the driver has the intention of starting the vehicle. Furthermore, when the current vehicle speed is 0, the current clutch signal is 0, the current accelerator gear is 0, and the current hand brake signal is not 0, the engine enters an idle working condition, one condition is not met, and the engine can be judged not to enter the idle working condition.
The method is applicable to diesel engines. The fuel injection amount of the diesel engine changes due to the change in the rotational speed, and the intake air amount changes due to the change in the fuel injection amount. The change of the intake air amount is more obvious and easy to detect relative to the change of the injection amount.
In one embodiment, FIG. 2 is a flow chart of a method for regulating engine speed in accordance with one embodiment of the present invention. As shown in the figure 2 of the drawings,
firstly, S201, judging whether to enter an idle working condition; if not, returning to the beginning; if yes, executing S202;
s202, judging whether a selection switch is marked with 1; if not, executing S212; if yes, executing S203;
s203, acquiring initial oil injection quantity under an idle working condition;
s204, calculating the expected air inflow under the reserve torque;
s205, acquiring the current air inflow and idle speed;
s206, judging whether the current air inflow is larger than the expected air inflow or not; if yes, then execute S207; if not, executing S209;
s207, reducing the idle speed of the engine by a preset amplitude to obtain the current speed;
s208, judging whether the current rotating speed is larger than the limiting rotating speed or not; if yes, return to S205; if not, executing S209;
s209, taking the sum of the current rotating speed and the preset amplitude as the set rotating speed of the engine under the idle working condition;
s210, judging whether a clutch signal exists, if so, executing S211, and if not, executing S212;
s211, maintaining a set rotating speed;
s212, maintaining the initial rotation speed.
When the current air inflow is smaller than the initial air inflow, the initial rotating speed is maintained.
The selection switch can be manually selected by a driver, and the rotation speed reduction flow is started if the selection switch is selected, and is not started if the selection switch is not selected. The selectivity of the driver is increased. For example, switch flag 1 may be selected when the driver plans to idle the vehicle for longer periods of time, otherwise, switch Guan Biao 0 may be selected.
Fig. 3 is a flowchart of a method for adjusting engine speed according to another embodiment of the present invention. In this embodiment, the desired intake air amount under the idle condition is first selected by the selector switch, and then calculated, and when the vehicle enters the idle condition, a determination of the current intake air amount and the desired intake air amount can be made.
Adding a calibratable detection switch, and calibrating to be 0: the idle reduction function is not activated and the engine idle setting is a fixed value. When the calibration is 1: and the idle speed reducing function is started, and the idle speed of the engine can be adjusted according to the comparison between the current air inflow and the air inflow expected by the reserved power. When there is no clutch signal, the engine idle speed is set at a slow speed. When the clutch signal is detected, the idle speed setting value is changed from the low value rmp to the idle speed value when the function is not turned on.
Therefore, according to the actual running condition of the whole vehicle, the rotating speed of the idle engine is reduced, energy is saved, noise is reduced, meanwhile, reserve power is introduced to avoid the problem of insufficient power, meanwhile, whether the driving is needed or not is judged according to the clutch signal, the idle speed set value is adjusted in time, and the power performance is further guaranteed. The fuel consumption is reduced while the dynamic performance is ensured, and the economic benefit is improved.
In any of the above embodiments, idle: the idling means that the engine runs under the condition of no load, and only the friction resistance of the internal parts of the engine is overcome, so that the engine does not output power to the outside.
Air excess factor: an important parameter reflecting the fuel to air ratio is the ratio of the actual mass of air supplied to burn 1kg of fuel to the theoretical amount of air required for complete combustion in theory.
Example two
The invention provides an adjusting device of engine rotation speed, comprising:
the expected air inflow calculation module is used for calculating the expected air inflow under the idle working condition based on the initial oil injection quantity of the engine under the idle working condition, and the expected air inflow can meet the starting power requirement of the whole vehicle;
the acquisition module is used for acquiring the current air inflow of the engine;
the first judging module is used for judging whether the current air inflow is larger than the expected air inflow or not; when the current air inflow of the engine is larger than the expected air inflow, the idle speed of the engine is reduced by a preset amplitude, the current speed of the engine is obtained, whether the current speed is larger than the limiting speed is judged, and when the current speed is larger than the limiting speed, the step of obtaining the current air inflow of the engine is returned;
the judging module is also used for taking the sum of the current rotating speed and the preset amplitude as the set rotating speed of the engine under the idle working condition when the current air inflow of the engine is smaller than or equal to the expected air inflow or the current rotating speed is smaller than or equal to the limiting rotating speed; when the initial air inflow is smaller than or equal to the expected air inflow, the initial rotating speed of the engine is taken as the set rotating speed of the engine under the idle working condition.
Alternatively, the desired intake air amount is a product of the initial fuel injection amount and the first parameter, the second parameter, and the first constant;
the first parameter is a preset excess air coefficient when the reserve torque is reached, the second parameter is a calibrated multiple of the fuel injection quantity and the initial fuel injection quantity when the reserve torque is reached, and the first constant is the air-fuel ratio; the first parameter is greater than 1 and less than the actual excess air ratio of the engine during idle conditions, and the second parameter is greater than 1.
Optionally, the method further comprises:
the second judging module is used for judging whether the clutch signal is received or not;
when the clutch signal is not received, maintaining the set rotating speed of the engine under the idle working condition;
and when the clutch signal is received, the set rotating speed of the engine under the idle working condition is restored to the initial rotating speed.
Optionally, the method further comprises:
the acquisition module is also used for acquiring the current speed of the engine-driven vehicle, the current clutch signal, the current accelerator gear, the current hand brake signal and the current rotating speed of the engine;
the third judging module is used for judging whether the engine enters an idle working condition, and when the current vehicle speed is not 0, or the current clutch signal is not 0, or the current accelerator gear is not 0, or the current hand brake signal is 0, the engine does not enter the idle working condition;
when the current vehicle speed is 0, the current clutch signal is 0, the current accelerator gear is 0, and the current hand brake signal is not 0, the engine enters an idle working condition.
The engine speed adjusting device provided by the embodiment of the invention can execute the engine speed adjusting method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
Example III
The invention provides an electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of regulating engine speed of any one of the embodiments of the present invention.
The present invention provides a computer readable storage medium storing computer instructions for causing a processor to execute a method of regulating engine speed according to any one of the embodiments of the present invention.
Fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the Random Access Memory (RAM) 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, read Only Memory (ROM) 12 and Random Access Memory (RAM) 13 are connected to each other by a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
The various components in the electronic device 10 are connected to an input/output (I/O) interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the method of regulation of engine speed.
In some embodiments, the method of regulating engine speed may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via Read Only Memory (ROM) 12 and/or communication unit 19. When the computer program is loaded into Random Access Memory (RAM) 13 and executed by processor 11, one or more steps of the method of regulating engine speed described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the method of adjustment of the engine speed in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
According to the technical scheme, the rotation speed of the engine is adjusted and reduced, so that the current air inflow is reduced, oil consumption and noise are reduced, meanwhile, the current air inflow is compared with the set expected air inflow, the current air inflow is not lower than the expected air inflow, and the black smoke of the engine and the power shortage during restarting are avoided. Meanwhile, the rotating speed of the engine is ensured to be above the limiting rotating speed, so that the normal mechanical performance of the vehicle engine is ensured.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method of adjusting an engine speed, comprising:
calculating the expected air inflow under the idle working condition based on the initial oil injection quantity of the engine under the idle working condition, wherein the expected air inflow can meet the starting power requirement of the whole vehicle;
acquiring the current air inflow of the engine; judging whether the current air inflow is larger than the expected air inflow or not;
when the current air inflow of the engine is larger than the expected air inflow, reducing the idle speed of the engine by a preset amplitude, acquiring the current speed of the engine, judging whether the current speed is larger than a limiting speed, and returning to the step of acquiring the current air inflow of the engine when the current speed is larger than the limiting speed;
when the current air inflow of the engine is smaller than or equal to the expected air inflow or the current rotating speed is smaller than or equal to the limiting rotating speed, taking the sum of the current rotating speed and the preset amplitude as the set rotating speed of the engine under the idle working condition; and when the initial air inflow is smaller than or equal to the expected air inflow, taking the initial rotating speed of the engine as the set rotating speed of the engine under the idle working condition.
2. The method of adjusting engine speed according to claim 1, wherein calculating the desired intake air amount under the idle condition based on the initial fuel injection amount under the engine entering the idle condition includes:
the expected air inflow is the product of the initial oil injection quantity and a first parameter, a second parameter and a first constant;
the first parameter is a preset excess air coefficient when the reserve torque is reached, the second parameter is a calibrated multiple of the fuel injection quantity and the initial fuel injection quantity when the reserve torque is reached, and the first constant is an air-fuel ratio; the first parameter is greater than 1 and less than an actual excess air ratio of the engine under idle conditions, and the second parameter is greater than 1.
3. The method for adjusting the rotational speed of an engine according to claim 1, further comprising, after obtaining the set rotational speed of the engine under the idle condition:
judging whether a clutch signal is received or not;
when no clutch signal is received, maintaining the set rotating speed of the engine under the idle working condition;
and when the clutch signal is received, the set rotating speed of the engine under the idle working condition is restored to the initial rotating speed.
4. The method of adjusting engine speed according to claim 1, further comprising, before the initial fuel injection amount based on the engine entering idle condition:
acquiring a current speed, a current clutch signal, a current accelerator gear and a current hand brake signal of the engine-driven vehicle;
judging whether the engine enters an idle working condition, and when the current vehicle speed is not 0, or the current clutch signal is not 0, or the current accelerator gear is not 0, or the current hand brake signal is 0, not entering the idle working condition;
when the current vehicle speed is 0, the current clutch signal is 0, the current accelerator gear is 0, and the current hand brake signal is not 0, the engine enters an idle working condition.
5. An engine speed adjusting device, comprising:
the expected air inflow calculation module is used for calculating the expected air inflow under the idle working condition based on the initial oil injection quantity of the engine under the idle working condition, and the expected air inflow can meet the starting power requirement of the whole vehicle;
an acquisition module for acquiring a current air inflow of the engine;
the first judging module is used for judging whether the current air inflow is larger than the expected air inflow or not; when the current air inflow of the engine is larger than the expected air inflow, reducing the idle speed of the engine by a preset amplitude, acquiring the current speed of the engine, judging whether the current speed is larger than a limiting speed, and returning to the step of acquiring the current air inflow of the engine when the current speed is larger than the limiting speed;
the judging module is further used for taking the sum of the current rotating speed and the preset amplitude as the set rotating speed of the engine under the idle working condition when the current air inflow of the engine is smaller than or equal to the expected air inflow or the current rotating speed is smaller than or equal to the limit rotating speed; and when the initial air inflow is smaller than or equal to the expected air inflow, taking the initial rotating speed of the engine as the set rotating speed of the engine under the idle working condition.
6. The engine speed adjusting device according to claim 5, characterized in that the desired intake air amount is a product of the initial fuel injection amount and a first parameter, a second parameter, and a first constant;
the first parameter is a preset excess air coefficient when the reserve torque is reached, the second parameter is a calibrated multiple of the fuel injection quantity and the initial fuel injection quantity when the reserve torque is reached, and the first constant is an air-fuel ratio; the first parameter is greater than 1 and less than an actual excess air ratio of the engine under idle conditions, and the second parameter is greater than 1.
7. The engine speed adjusting device according to claim 5, characterized by further comprising:
the second judging module is used for judging whether the clutch signal is received or not;
when no clutch signal is received, maintaining the set rotating speed of the engine under the idle working condition;
and when the clutch signal is received, the set rotating speed of the engine under the idle working condition is restored to the initial rotating speed.
8. The engine speed adjusting device according to claim 5, characterized by further comprising:
the acquisition module is also used for acquiring the current speed, the current clutch signal, the current accelerator gear and the current hand brake signal of the engine-driven vehicle;
the third judging module is used for judging whether the engine enters an idle working condition, and when the current vehicle speed is not 0, or the current clutch signal is not 0, or the current accelerator gear is not 0, or the current hand brake signal is 0, the engine does not enter the idle working condition;
when the current vehicle speed is 0, the current clutch signal is 0, the current accelerator gear is 0, and the current hand brake signal is not 0, the engine enters an idle working condition.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of regulating engine speed of any one of claims 1-4.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions for causing a processor to execute the method of adjusting the engine speed according to any one of claims 1-4.
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| CN202311484462.0A CN117536720A (en) | 2023-11-09 | 2023-11-09 | Method, device, equipment and medium for adjusting engine rotation speed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311484462.0A CN117536720A (en) | 2023-11-09 | 2023-11-09 | Method, device, equipment and medium for adjusting engine rotation speed |
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| CN202311484462.0A Pending CN117536720A (en) | 2023-11-09 | 2023-11-09 | Method, device, equipment and medium for adjusting engine rotation speed |
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| Country | Link |
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| CN (1) | CN117536720A (en) |
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- 2023-11-09 CN CN202311484462.0A patent/CN117536720A/en active Pending
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