CN115506908B - Correction method for automobile PTO function and engine controller - Google Patents

Correction method for automobile PTO function and engine controller Download PDF

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Publication number
CN115506908B
CN115506908B CN202211060396.XA CN202211060396A CN115506908B CN 115506908 B CN115506908 B CN 115506908B CN 202211060396 A CN202211060396 A CN 202211060396A CN 115506908 B CN115506908 B CN 115506908B
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engine
adjustment
engine controller
pto
value
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CN115506908A (en
Inventor
干平
黄灵灵
朱燕
覃洋
吴澄华
宋抒丹
陈昌淼
黄河
吴建晨
陈云宝
庞家兴
叶颜俊
刘海媚
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Guangxi Yuchai Machinery Co Ltd
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Guangxi Yuchai Machinery Co Ltd
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Priority to CN202211060396.XA priority Critical patent/CN115506908B/en
Publication of CN115506908A publication Critical patent/CN115506908A/en
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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
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • 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
    • 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
    • F02D2200/703—Atmospheric pressure

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The embodiment of the application discloses a method for correcting a PTO function of an automobile in a special environment and an engine controller, which are used for reducing the occurrence probability of insufficient kinetic energy output of the engine in a low-pressure environment. The method comprises the following steps: when the engine is in a PTO auxiliary power output control mode, the engine controller obtains the ambient pressure where the current engine operates; the engine controller obtains a corresponding rotating speed calibration value of the PTO according to the ambient pressure; the engine controller receives a rotation speed adjustment signal of the PTO; the engine controller obtains an adjustment reference value of the rotation speed adjustment signal; and the engine controller sums the adjustment reference value and the rotating speed calibration value to obtain a target adjustment value, and adjusts the rotating speed of the engine through the target adjustment value.

Description

Correction method for automobile PTO function and engine controller
Technical Field
The embodiment of the application relates to the field of automobile functions, in particular to a method for correcting an automobile PTO function and an engine controller.
Background
In human development, automobiles take important roles, and for certain special operating conditions, the automobiles derive a plurality of related whole automobile functions. Therefore, for an engine that provides power output, there is an increasing need for logic control schemes, one of which is PTO function.
In the prior art, PTO, auxiliary power take-off control is used for operating conditions requiring constant speed control of the engine, and the engine is operated at a desired set speed within the limits of the external characteristics. At this time, the accelerator of the vehicle is disabled, but the engine is operated at a certain set rotational speed, such as an engine rotational speed and a load condition of the whole vehicle in a certain requirement. For example: the sanitation vehicle runs at a lower speed with a fixed gear, but the higher engine speed is required to provide hydraulic power for the whole vehicle besides the forward power of the vehicle, so as to carry out pressurized sprinkling working condition; the crane can take out heavy objects at a specific rotation speed, and the like.
As described above, in a special environment, if the engine speed is not increased in a corresponding targeted modification, the working condition of the engine may be affected by the working environment, thereby causing the functional failure.
Disclosure of Invention
The embodiment of the application provides a method for correcting the PTO function of an automobile in a special environment, which is used for reducing the probability of insufficient kinetic energy output of an engine in a low-pressure environment.
The first aspect of the present application provides a method for correcting a PTO function of an automobile in a specific environment, including:
when the engine is in a PTO auxiliary power output control mode, the engine controller obtains the ambient pressure where the current engine operates;
the engine controller obtains a corresponding rotating speed calibration value of the PTO according to the ambient pressure;
the engine controller receives a rotation speed adjustment signal of the PTO;
the engine controller obtains an adjustment reference value of the rotation speed adjustment signal;
and the engine controller sums the adjustment reference value and the rotating speed calibration value to obtain a target adjustment value, and adjusts the rotating speed of the engine through the target adjustment value.
Optionally, before the engine controller obtains the ambient pressure at which the current engine operates, the method further includes:
and establishing a calibration reference table according to the actual displacement and the rotating speed of the engine, wherein the mapping relation between the atmospheric pressure and the rotating speed of the PTO is recorded in the calibration reference table.
Optionally, the engine controller obtaining the corresponding rotational speed calibration value of the PTO according to the ambient pressure includes:
and the engine controller determines a corresponding rotating speed calibration value of the PTO through the ambient pressure according to the mapping relation in the calibration reference table.
Optionally, before the engine controller obtains the ambient pressure at which the current engine operates, the method further includes:
the engine controller controls the engine to enter a PTO auxiliary power take off control mode.
Optionally, the engine controller obtaining the adjustment reference value of the rotation speed adjustment signal includes:
the engine controller obtains a rotation speed adjustment state according to the rotation speed adjustment signal;
the engine controller determines the adjustment reference value according to the rotation speed adjustment state.
A second aspect of the present application provides an engine controller comprising:
the first acquisition unit is used for acquiring the environmental pressure of the current engine when the engine is in the PTO auxiliary power output control mode;
a second obtaining unit, configured to obtain a corresponding rotational speed calibration value of the PTO according to the ambient pressure;
a receiving unit for receiving the rotation speed adjustment signal of the PTO;
a third acquisition unit configured to acquire an adjustment reference value of the rotation speed adjustment signal;
and the calculation unit is used for summing the adjustment reference value and the rotating speed calibration value to obtain a target adjustment value, and adjusting the rotating speed of the engine through the target adjustment value.
Optionally, the engine controller further includes:
the establishing unit is used for establishing a calibration reference table according to the actual displacement and the rotating speed of the engine, wherein the mapping relation between the atmospheric pressure and the PTO rotating speed is recorded in the calibration reference table.
Optionally, the second obtaining unit is further configured to:
and determining a corresponding rotating speed calibration value of the PTO through the ambient pressure according to the mapping relation in the calibration reference table.
Optionally, the engine controller further includes:
and the mode switching unit is used for controlling the engine to enter a PTO auxiliary power output control mode.
Optionally, the third obtaining unit includes:
the acquisition module is used for acquiring a rotation speed adjustment state according to the rotation speed adjustment signal;
and the determining module is used for determining the adjustment reference value according to the rotating speed adjustment state.
A third aspect of the present application provides an engine controller comprising:
the device comprises a processor, a memory, an input/output unit and a bus;
the processor is connected with the memory, the input/output unit and the bus;
the processor specifically performs the same operations as the aforementioned first aspect.
According to the technical scheme, under the condition that the engine is operated in a low-pressure area caused by a special environment by adding a logic strategy, a certain rotation speed adjusting value is purposefully improved when the rotation speed of the engine in a PTO state is adjusted through the current air pressure value, the purpose of improving the rotation speed of the engine is achieved, the load capacity of the engine is ensured, and the waste of oil consumption is avoided.
Drawings
FIG. 1 is a flow chart of an embodiment of a method for modifying a PTO function of an automobile in a special environment according to an embodiment of the present application;
FIG. 2 is a flowchart of another embodiment of a method for modifying the PTO function of an automobile in a special environment according to the present application;
FIG. 3 is a schematic diagram of one embodiment of an apparatus for an engine controller according to an embodiment of the present application;
FIG. 4 is a schematic diagram of another embodiment of an apparatus for an engine controller according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of another embodiment of an apparatus for an engine controller according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a method for correcting the PTO function of an automobile in a special environment, which is used for reducing the probability of insufficient kinetic energy output of an engine in a low-pressure environment.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 1, an embodiment of a method for correcting a PTO function of an automobile in a special environment is provided, including:
101. when the engine is in a PTO auxiliary power output control mode, the engine controller obtains the ambient pressure where the current engine operates;
the PTO is an auxiliary power output control for operating the engine at a desired set rotational speed within an external characteristic limit range under a condition where the engine is required to be controlled at the set rotational speed. The engine in PTO mode does not respond to control of the vehicle throttle and therefore in this case the rotational speed of the engine can only be regulated regularly by means of a PTO control module provided on the vehicle.
In actual use, low air pressure can cause engine running to lose dynamic performance, so when the PTO adjusts the engine rotating speed, the adjusting value needs to be adjusted corresponding to the air pressure, and when the engine is in the PTO mode, the engine controller needs to acquire the environmental pressure of the current environment of the engine.
102. The engine controller obtains a corresponding rotating speed calibration value of the PTO according to the ambient pressure;
when the engine controller acquires the ambient pressure, the engine controller acquires a corresponding PTO rotational speed calibration value according to the ambient pressure, the rotational speed calibration value is used for accumulating an adjustment value for adjusting the rotational speed of the engine when the engine controller acquires a control signal acquired by external hardware of the PTO, and the rotational speed of the engine is correspondingly corrected by increasing or decreasing the rotational speed of the engine through a result value obtained by accumulation.
103. The engine controller receives a rotation speed adjustment signal of the PTO;
in practice, the PTO sends a signal to the engine controller via external hardware to control the engine speed. The PTO hardware consists of a PTO control switch set, typically four keys: the design of the three keys, namely the resume switch 'RES key', the stop switch 'OFF key', the adjustment switch 'plus key' and the adjustment switch 'key', is also available, and the resume switch 'RES key' and the stop switch 'OFF key' are integrated into the same key, but the overall control logic is similar. The engine controller receives a rotational speed adjustment signal from the PTO when the engine is performing rotational speed adjustment.
104. The engine controller obtains an adjustment reference value of the rotation speed adjustment signal;
the adjustment reference value refers to a value of the engine controller for adjusting the rotation speed of the engine when the adjustment switch is pressed each time, and the engine controller determines an adjustment mode corresponding to the rotation speed adjustment signal according to the adjustment signal each time the engine controller receives the adjustment signal under the condition that no air pressure reduction influence is caused by the environment, so that the adjustment reference value is obtained.
In practical situations, the adjustment signal sent by the PTO control button has two states, namely long press and short press, and in general, the adjustment value of the long press is smaller than the adjustment value of the short press, so that the PTO can control the rotational speed of the engine more accurately.
105. And the engine controller sums the adjustment reference value and the rotating speed calibration value to obtain a target adjustment value, and adjusts the rotating speed of the engine through the target adjustment value.
After the adjustment reference value and the rotation speed calibration value are obtained, the engine controller adjusts the rotation speed of the engine according to the rotation speed adjustment signal, and when the engine controller judges that the rotation speed adjustment signal is long-pressed, the engine controller increases the upper rotation speed calibration value every time the rotation speed is changed in the long-pressed state, namely, for example: the speed of the PTO is changed to be 25 rpm, the speed calibration value is 50, the speed of the PTO is changed to be 75 rpm, and the 75 rpm is the target adjustment value. If the rotation speed adjusting signal is short, the adjusting reference value and the rotation speed calibration value are summed to obtain a target adjusting value.
Specifically, the engine controller corrects the rotation speed calibration value by adjusting the reference value to obtain a PTO target adjustment value, and adjusts the PTO target adjustment value as the final output rotation speed of the engine.
According to the technical scheme, when the engine is operated in a low-pressure area caused by a special environment by adding a logic strategy and the rotation speed of the engine in a PTO state is adjusted through the current air pressure value, a certain adjustment rotation speed value is corrected and improved in a targeted manner, the purpose of improving the rotation speed of the engine is achieved, the load capacity of the engine is guaranteed, and the waste of oil consumption is avoided.
Referring to fig. 2, an embodiment of a method for correcting a PTO function of an automobile in a special environment is provided in the present application, including:
201. and establishing a calibration reference table according to the actual displacement and the rotating speed of the engine, wherein the mapping relation between the atmospheric pressure and the rotating speed of the PTO is recorded in the calibration reference table.
The engines with different displacement have different adaptability to the processing capacity of the low-pressure environment, and the calibration reference table is a corrected matrix MAP in actual conditions, and the corrected matrix MAP is stored in an engine controller.
The set rule of the modified matrix MAP is as follows:
1. when the atmospheric pressure is lower (the altitude is higher), the correction force can be larger, so that the increasing value of the engine speed is larger, the carrying capacity is ensured, and the running stability of the engine is ensured;
2. when the PTO of the engine requests lower rotation speed, the correction force can be larger, so that the value of the increase of the rotation speed of the engine is larger, the running stability of the engine is ensured, and the load capacity of the engine is ensured;
3. therefore, when the environmental pressure of the engine is lower, the PTO request rotating speed is lower, so that the increasing value of the rotating speed of the engine is larger, the carrying capacity is ensured, and the running stability of the engine is ensured;
4. when the environmental pressure of the engine is higher, the PTO request rotating speed is higher, the performance of the engine is less influenced by the environmental pressure, and the running stability and the carrying capacity are ensured, so that correction is not needed, and the oil consumption is ensured;
in summary, the engine can be corrected specifically according to the effect of the corrected matrix MAP. If the engine is only running on plain, this logic will not be enabled, or the corrected matrix MAP will be marked with 0 in its entirety, and the speed correction on altitude will not be reflected.
The corrected matrix MAP determines a specific parameter from two values, namely the atmospheric pressure (hPa) and the requested PTO rotational speed (r/min), which is the current rotational speed of the engine when the engine controller receives the rotational speed adjustment signal.
202. The engine controller controls the engine to enter a PTO auxiliary power take off control mode.
The engine essentially works on the vehicle as a drive for the vehicle, and entering the PTO mode means that the current engine needs to power large equipment external to the vehicle, and therefore, the engine needs to maintain a high engine speed without accelerating the vehicle through throttle control, so that the engine maintains a high kinetic energy output.
203. When the engine is in a PTO auxiliary power output control mode, the engine controller obtains the ambient pressure where the current engine operates;
step 203 in this embodiment is similar to step 101 in the previous embodiment, and will not be described here again.
204. And the engine controller determines a corresponding rotating speed calibration value of the PTO through the ambient pressure according to the mapping relation in the calibration reference table.
As can be seen from the above, the corrected matrix MAP is stored in the engine controller, and when the engine controller determines the ambient pressure at which the engine is running, a rotational speed calibration value can be obtained according to the ambient pressure and the current rotational speed of the engine.
205. The engine controller receives a rotation speed adjustment signal of the PTO;
step 205 in this embodiment is similar to step 103 in the previous embodiment, and will not be repeated here.
206. The engine controller obtains a rotation speed adjustment state according to the rotation speed adjustment signal;
specifically, the adjustment state is a state in which the PTO case feeds back to the engine controller, and the state generally includes two states, i.e., long press and short press.
207. The engine controller determines the adjustment reference value according to the rotation speed adjustment state.
After the engine controller obtains the rotation speed adjustment state according to the rotation speed adjustment signal, the engine controller can adjust the rotation speed of the engine according to the obtained adjustment reference value in the corresponding state, wherein the adjustment reference value is a value of adjusting the rotation speed of the engine by the PTO in a state of not being influenced by air pressure.
208. And the engine controller sums the adjustment reference value and the rotating speed calibration value to obtain a target adjustment value, and adjusts the rotating speed of the engine through the target adjustment value.
Step 208 in this embodiment is similar to step 105 in the previous embodiment, and will not be described again.
In the embodiment of the application, the engine controller is internally provided with the corrected matrix MAP, namely the calibration reference table, so that the engine controller can acquire a rotating speed calibration value required by the engine controller when the engine controller corrects the rotating speed of the engine according to the logic of the PTO according to the corresponding parameters of the calibration reference table, and the engine controller can sum the adjusting reference value and the rotating speed calibration value, thereby reaching the target adjusting value.
The method for correcting the PTO function of the automobile under the special environment in the embodiment of the present application is described in detail above, and the engine controller will be described in detail below.
Referring to FIG. 3, an embodiment of the present application provides an engine controller comprising:
a first obtaining unit 301, configured to obtain an ambient pressure where the current engine operates when the engine is in the PTO auxiliary power output control mode;
a second obtaining unit 302, configured to obtain a corresponding rotational speed calibration value of the PTO according to the ambient pressure;
a receiving unit 303, configured to receive a rotational speed adjustment signal of the PTO;
a third obtaining unit 304, configured to obtain an adjustment reference value of the rotation speed adjustment signal;
and a calculating unit 305, configured to sum the adjustment reference value and the rotation speed calibration value to obtain a target adjustment value, and adjust the rotation speed of the engine according to the target adjustment value.
In this embodiment, the functions of each unit correspond to the steps in the embodiment shown in fig. 1, and are not described herein.
Referring to FIG. 4, an embodiment of the present application provides an engine controller comprising:
the establishing unit 401 is configured to establish a calibration reference table according to the actual displacement and the rotational speed of the engine, where a mapping relationship between the atmospheric pressure and the PTO rotational speed is recorded in the calibration reference table.
A mode switching unit 402 for controlling the engine to enter a PTO auxiliary power output control mode.
A first obtaining unit 403, configured to obtain an ambient pressure at which the current engine operates when the engine is in the PTO auxiliary power output control mode;
a second obtaining unit 404, configured to obtain a corresponding rotational speed calibration value of the PTO according to the ambient pressure;
a receiving unit 405, configured to receive the rotational speed adjustment signal of the PTO;
a third obtaining unit 406, configured to obtain an adjustment reference value of the rotation speed adjustment signal;
the calculating unit 407 is configured to sum the adjustment reference value and the rotation speed calibration value to obtain a target adjustment value, and adjust the rotation speed of the engine according to the target adjustment value.
In this embodiment of the present application, the second obtaining unit 404 is further configured to:
and determining a corresponding rotating speed calibration value of the PTO through the ambient pressure according to the mapping relation in the calibration reference table.
In the embodiment of the present application, the third obtaining unit 406 includes:
an acquisition module 4061, configured to acquire a rotation speed adjustment state according to the rotation speed adjustment signal;
a determining module 4062, configured to determine the adjustment reference value according to the rotation speed adjustment state.
In this embodiment, the functions of each unit correspond to the steps in the embodiment shown in fig. 2, and are not described herein.
Referring to fig. 5, another embodiment of an apparatus for an engine controller according to an embodiment of the present application includes:
a processor 501, a memory 502, an input/output unit 503, and a bus 504;
the processor 501 is connected to the memory 502, the input/output unit 503, and the bus 504;
the processor 501 specifically performs operations corresponding to the steps in the methods of fig. 1 to 2, and detailed descriptions thereof are omitted herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM, random access memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Claims (8)

1. A method for correcting the PTO function of an automobile in a special environment is characterized by comprising the following steps:
when the engine is in a PTO auxiliary power output control mode, the engine controller obtains the ambient pressure where the current engine operates;
the engine controller obtains a corresponding rotating speed calibration value of the PTO according to the ambient pressure;
the engine controller receives a rotation speed adjustment signal of the PTO;
the engine controller obtains an adjustment reference value of the rotation speed adjustment signal;
the engine controller sums the adjustment reference value and the rotating speed calibration value to obtain a target adjustment value, and adjusts the rotating speed of the engine through the target adjustment value;
the engine controller obtaining the adjustment reference value of the rotation speed adjustment signal includes:
the engine controller acquires a rotation speed adjustment state according to the rotation speed adjustment signal, wherein the rotation speed adjustment state is fed back to the engine controller by a PTO key, and the adjustment state comprises a long-press state and a short-press state;
the engine controller determines the adjustment reference value according to the rotation speed adjustment state, wherein the adjustment reference value is a value for adjusting the rotation speed of the engine when the adjustment switch is pressed each time.
2. The method of claim 1, wherein prior to the engine controller acquiring the ambient pressure at which the current engine is operating, the method further comprises:
and establishing a calibration reference table according to the actual displacement and the rotating speed of the engine, wherein the mapping relation between the atmospheric pressure and the rotating speed of the PTO is recorded in the calibration reference table.
3. The method of claim 2, wherein the engine controller obtaining a corresponding rotational speed calibration of the PTO based on the ambient pressure comprises:
and the engine controller determines a corresponding rotating speed calibration value of the PTO through the ambient pressure according to the mapping relation in the calibration reference table.
4. A method according to any one of claims 1 to 3, wherein before the engine controller obtains the ambient pressure at which the current engine is running, the method further comprises:
the engine controller controls the engine to enter a PTO auxiliary power take off control mode.
5. An engine controller, comprising:
the first acquisition unit is used for acquiring the environmental pressure of the current engine when the engine is in the PTO auxiliary power output control mode;
a second obtaining unit, configured to obtain a corresponding rotational speed calibration value of the PTO according to the ambient pressure;
a receiving unit for receiving the rotation speed adjustment signal of the PTO;
the third obtaining unit is used for obtaining an adjustment reference value of the rotation speed adjustment signal, wherein the adjustment reference value is a value obtained by adjusting the rotation speed of the engine by the engine controller when the adjustment switch is pressed down each time, and the engine controller determines an adjustment mode corresponding to the rotation speed adjustment signal according to the adjustment signal each time the engine controller receives the adjustment signal under the condition that the air pressure is not reduced due to the environment, so that the adjustment reference value is obtained;
the calculation unit is used for summing the adjustment reference value and the rotating speed calibration value to obtain a target adjustment value, and adjusting the rotating speed of the engine through the target adjustment value;
the third acquisition unit includes:
the acquisition module is used for acquiring a rotating speed adjustment state according to the rotating speed adjustment signal, wherein the rotating speed adjustment state is fed back to the engine controller by the PTO key, and the adjustment state comprises a long-press state and a short-press state;
and the determining module is used for determining the adjustment reference value according to the rotating speed adjustment state, wherein the adjustment reference value is a value for adjusting the rotating speed of the engine by the engine controller when the adjustment switch is pressed each time.
6. The engine controller of claim 5, further comprising:
the establishing unit is used for establishing a calibration reference table according to the actual displacement and the rotating speed of the engine, wherein the mapping relation between the atmospheric pressure and the PTO rotating speed is recorded in the calibration reference table.
7. The engine controller of claim 6, wherein the second acquisition unit is further configured to:
and determining a corresponding rotating speed calibration value of the PTO through the ambient pressure according to the mapping relation in the calibration reference table.
8. The engine controller according to any one of claims 5 to 7, characterized in that the engine controller further comprises:
and the mode switching unit is used for controlling the engine to enter a PTO auxiliary power output control mode.
CN202211060396.XA 2022-08-31 2022-08-31 Correction method for automobile PTO function and engine controller Active CN115506908B (en)

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