Protection control method for preventing stalling of engine of heavy-duty car
A car engine, protection and control technology, applied in the direction of engine control, combustion engine, machine/engine, etc., can solve the problems of poor processing effect, long processing time, high risk, etc., to achieve protection from damage and good braking effect , the effect of protecting personal safety
Active Publication Date: 2021-05-25
上海新动力汽车科技股份有限公司
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Problems solved by technology
However, the above two approaches have longer processing time, poorer processing effect, and greater risk, and the achieved effect is not good.
Method used
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[0027] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0028] This embodiment is a protection control method for anti-stall of a heavy-duty vehicle engine, which can effectively avoid vehicle coasting caused by engine stall conditions.
[0029] In this embodiment, an electronic control unit ECU is arranged in the vehicle, and the execution body of the protection control method is the electronic control unit ECU.
[0030] see figure 1 , the protection control method includes steps 1 to 8:
[0031] Step 1. In the electronic control unit ECU, the engine speed of the vehicle is compared with the maximum idling speed of the engine. If the engine speed of the vehicle exceeds the maximum idling speed of the engine, it is determined that the vehicle is in the first vehicle overspeed state.
[0032] In this embodiment, the maximum idling speed of the engine is the maximum idling speed of the engine combined wit...
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The invention discloses a protection control method for preventing stalling of an engine of a heavy-duty car. The method comprises the steps that if the rotating speed of the car engine exceeds the highest idle rotating speed of the engine, it is judged that the car is in a first car overspeed state; if the car running speed exceeds the highest limited running speed, it is judged that the car is in a second car overspeed state; if the car is in the first car overspeed state or the second car overspeed state, it is judged that the car is in the car overspeed state; if the fuel injection quantity of the car engine exceeds the fuel injection quantity calibration limit value, it is judged that the car engine is in a running state; if the car is in the car overspeed state and the car engine is in the running state, it is judged that the car is in the engine stall state; and when it is judged that the car is in the engine stall condition, whole car braking measures are triggered immediately. According to the method, car inertial sliding caused by the engine stall condition can be avoided, and therefore the engine is protected against damage, and the personal safety of a driver and passengers is protected.
Description
technical field [0001] The invention relates to an automobile engine control method, in particular to a protection control method for heavy-duty automobile engine stall prevention. Background technique [0002] Compared with ordinary vehicles, heavy-duty vehicles have greater inertia during driving due to their large size. Once the vehicle loses control, it will have a huge impact on other vehicles or pedestrians, often causing serious traffic accidents. , the damage and losses caused are often immeasurable, so it is very important to ensure the stability and controllability of heavy vehicles. [0003] The engine stall condition is a phenomenon in which the mechanical operation process of the engine itself cannot be controlled, and it will cause serious destructive effects on the stability and controllability of the vehicle. [0004] Specifically, when the heavy-duty vehicle is driving downhill, if the driver makes a misoperation from a high gear to a low gear, it is very e...
Claims
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Login to View More IPC IPC(8): F02D41/22F02D29/02
CPCF02D41/22F02D29/02F02D2200/501Y02T10/40
Inventor 管晶晶熊津联李梦立纪丽伟凌建群曹卓尔
Owner 上海新动力汽车科技股份有限公司