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CN-122009135-A - Control method and device for Cheng Qiqi stop, engineering machinery vehicle and storage medium

CN122009135ACN 122009135 ACN122009135 ACN 122009135ACN-122009135-A

Abstract

The invention discloses a Cheng Qiqi stop control method and device, an engineering machinery vehicle and a storage medium. The range extender stopping control method is applied to an engineering machinery vehicle matched with a range extender hybrid power system, the range extender hybrid power system comprises a range extender and a hydraulic device, the range extender comprises a generator and an engine, the generator is connected with the hydraulic device, the range extender stopping control method comprises the steps of powering off the vehicle when an ignition switch is placed in an ON gear, controlling the range extender to stop based ON a stop instruction of the range extender, receiving a handle position signal through a whole vehicle controller during the stopping process of the range extender, acquiring actual torque of the engine when the engine is in an idle state, controlling the engine to stop according to the handle position signal and the actual torque, powering ON the vehicle again when the ignition switch is placed in the ON gear, controlling the range extender to start based ON a start instruction of the range extender, acquiring starting current of a starter during the starting process of the range extender, and determining whether to start the engine according to the starting current.

Inventors

  • ZHAN DONGHONG

Assignees

  • 潍柴动力股份有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (10)

  1. 1. The control method for the stop of the range extender Cheng Qiqi is characterized in that the control method for the stop of the range extender Cheng Qiqi is applied to an engineering mechanical vehicle matched with a range extender hybrid power system, the range extender comprises a range extender and a hydraulic device, the range extender comprises a generator and an engine, the generator is connected with the hydraulic device, and the control method for the stop of the range extender Cheng Qiqi comprises the following steps: When the ignition switch is placed in an ON gear, the vehicle is powered off, and the range extender is controlled to stop based ON a stop instruction of the range extender; In the stopping process of the range extender, a handle position signal is received through a whole vehicle controller, the actual torque of the engine in an idle state is obtained, and the stopping of the engine is controlled according to the handle position signal and the actual torque; when the ignition switch is placed in an ON gear, the vehicle is electrified again, and the range extender is controlled to start based ON a range extender starting instruction; and in the starting process of the range extender, acquiring the starting current of a starter, and determining whether to start the engine according to the starting current.
  2. 2. The add Cheng Qiqi stop control method according to claim 1, wherein controlling the engine stop based on the handle position signal and the actual torque includes: if the handle position is determined to be in the middle position based on the handle position signal, controlling the engine to stop according to the actual torque; if the handle position is determined not to be in the middle position based on the handle position signal, override the handle position to be in the middle position and controlling the engine to stop according to the actual torque.
  3. 3. The increase Cheng Qiqi stop control method according to claim 2, wherein controlling the engine stop according to the actual torque includes: if the torque difference value between the actual torque and the friction torque is larger than or equal to a torque threshold value, reporting a hydraulic valve maintenance fault in the hydraulic device, and controlling the engine to stop; And if the torque difference between the actual torque and the friction torque is smaller than the torque threshold value, controlling the engine to stop.
  4. 4. The increase Cheng Qiqi stop control method according to claim 1, wherein the increase Cheng Qiqi stop control method further includes: and in the stopping process of the range extender, if the handle position signal is not received by the whole vehicle controller, the override control handle position is in the middle position.
  5. 5. The range extender Cheng Qiqi stop control method of claim 1, further comprising, after controlling said range extender to start based on a range extender start instruction: the override handle position is continuously in neutral.
  6. 6. The increase Cheng Qiqi stop control method according to claim 1, wherein determining whether to start the engine according to the start current includes: if the starting current exceeds a current threshold value and the duration time of the starting current exceeding the current threshold value reaches a set time length, stopping starting the engine and reporting a hydraulic valve maintenance fault in the hydraulic device; And if the starting current does not exceed the current threshold value, starting the engine.
  7. 7. The increase Cheng Qiqi stop control method according to claim 1, wherein the increase Cheng Qiqi stop control method further includes: if the hydraulic valve maintenance fault in the hydraulic device is reported in the stopping process of the range extender, checking whether the hydraulic valve maintenance fault exists in the restarting process of the range extender.
  8. 8. The utility model provides a increase Cheng Qiqi stop controlling means, its characterized in that increases Cheng Qiqi stop controlling means is applied to the working machine vehicle that has the hybrid power system of increase range, the hybrid power system of increase range includes increase journey ware and hydraulic means, increase journey ware includes generator and engine, the generator with hydraulic means connects, increase Cheng Qiqi stop controlling means includes: the range extender stopping module is used for executing power failure of the vehicle when the ignition switch is placed in an ON gear and controlling the range extender to stop based ON a range extender stopping instruction; The engine stopping module is used for receiving a handle position signal through the whole vehicle controller in the stopping process of the range extender, acquiring the actual torque of the engine in an idle state and controlling the engine to stop according to the handle position signal and the actual torque; The range extender restarting module is used for executing the vehicle to power up again when the ignition switch is placed in the ON gear, and controlling the range extender to start based ON a range extender starting instruction; and the starting engine module is used for acquiring the starting current of the starter in the starting process of the range extender and determining whether to start the engine according to the starting current.
  9. 9. The engineering mechanical vehicle is characterized by comprising a range extender hybrid power system, wherein the range extender hybrid power system comprises a range extender, a hydraulic device, a driving motor and a power battery, the range extender comprises a generator and an engine, the generator is connected with the power battery through a generator controller, the hydraulic device is connected with the generator, and the driving motor is connected with the power battery through a driving motor controller; the construction machine vehicle further includes: 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 up Cheng Qiqi stop control method of any one of claims 1-7.
  10. 10. A computer readable storage medium storing computer instructions for causing a processor to implement the increase Cheng Qiqi stop control method of any one of claims 1-7 when executed.

Description

Control method and device for Cheng Qiqi stop, engineering machinery vehicle and storage medium Technical Field The invention relates to the technical field of engineering machinery vehicles, in particular to a Cheng Qiqi stop control method and device, an engineering machinery vehicle and a storage medium. Background The engineering machinery is an important component of equipment industry, and in general, all mechanical equipment necessary for realizing comprehensive mechanical construction in earth and stone construction, pavement construction and maintenance, mobile lifting loading and unloading operation and various building engineering is called engineering machinery. Engineering machinery vehicles, particularly large machines that carry heavy work, are common types including excavators, dozers, cranes, road rollers, loaders, concrete mixer trucks, and the like. The vehicle is widely applied to various engineering construction scenes and is mainly responsible for core operations such as excavation, material handling, ground compaction, heavy object lifting and the like. At present, when the traditional engineering machinery vehicles such as a loader, a bulldozer and the like carry out core operations such as shovel loading, the engine is directly relied on to drive the hydraulic component to complete power transmission, so that the operation actions are realized. In order to effectively control the acquisition cost of the assembly in the industry, the loader and the bulldozer adopting the extended-range hybrid power system adopt an integrated design idea, and the extended-range hybrid power system is additionally provided with key hydraulic components such as a hydraulic pump and the like, so that the extended-range hybrid power system has dual functions of being responsible for generating electricity and providing electric power support for an electric system of the whole vehicle, and directly driving the hydraulic components to run to meet the requirements of operations such as shoveling and bulldozing of the vehicle on hydraulic power. However, since the hydraulic components are integrated directly into the range extender, they form a tight coupling relationship on the power link, which also carries a specific risk of failure. Specifically, when mechanical jamming occurs in the hydraulic component, or the hydraulic valve fails to return to the neutral position, or even the hydraulic valve element fails, so that the hydraulic valve element cannot be normally closed, the abnormal state of the hydraulic system continues even when the engine is stopped. When the operator tries to start the engine by using the vehicle next time, the abnormality of the hydraulic system can cause interference to the starting process, or the starter can bear load exceeding the rated range to cause overcurrent, finally the starter is burnt, or the abnormal condition that the generator drags the engine to start can occur, and the abnormal starting mode can in turn damage the hydraulic components. Disclosure of Invention The invention provides a control method and device for adding Cheng Qiqi to stop, an engineering mechanical vehicle and a storage medium, and aims to solve the problem that when an engine is started again after stopping, an excessive current starter is burnt out or a generator drags the engine to start and damage hydraulic components at present once the hydraulic components are jammed, the hydraulic valve is not in the middle position or fails to be closed. According to an aspect of the present invention, there is provided a control method for increasing Cheng Qiqi and Cheng Qiqi a stop, the control method being applied to an engineering machinery vehicle equipped with a range-increasing hybrid power system, the range-increasing hybrid power system including a range extender and a hydraulic device, the range extender including a generator and an engine, the generator being connected with the hydraulic device, the control method for increasing Cheng Qiqi the stop comprising: when the ignition switch is placed in an ON gear, the vehicle is powered off, and the range extender is controlled to stop based ON a stop instruction of the range extender; In the stopping process of the range extender, a handle position signal is received through the whole vehicle controller, the actual torque of the engine in an idle state is obtained, and the stopping of the engine is controlled according to the handle position signal and the actual torque; when the ignition switch is placed in an ON gear, the vehicle is electrified again, and the range extender is controlled to start based ON a range extender starting instruction; And in the starting process of the range extender, acquiring the starting current of the starter, and determining whether to start the engine according to the starting current. Optionally, controlling the engine shutdown based on the handle position signal and the actual torque includes: If the handle positi