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A fuel cut-off method, device, engine control module and system

A fuel cut-off and control module technology, which is applied to the safety device of the power unit control mechanism, motor vehicle, transportation and packaging, etc., can solve the problem of wrong fuel cut-off operation, and achieve the effect of avoiding fuel cut-off operation

Active Publication Date: 2022-03-01
JIANGLING MOTORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, the purpose of the present invention is to provide a fuel cut-off method, device, engine control module and system to solve the existing technical problems that are easy to perform wrong fuel cut-off operations

Method used

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  • A fuel cut-off method, device, engine control module and system
  • A fuel cut-off method, device, engine control module and system
  • A fuel cut-off method, device, engine control module and system

Examples

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Embodiment 1

[0050] see figure 1 , shows the fuel cut-off method in the first embodiment of the present invention, which is applied to the engine control module, and the engine control module can implement the method through software and / or hardware, and the method specifically includes steps S01 to S03.

[0051] Step S01, receiving a multi-frame CAN message sent by the vehicle body control module, the CAN message includes a collision signal and its verification signal, and the multi-frame CAN message is the vehicle body control module at a set time point or Sent simultaneously when a collision signal is received.

[0052]It should be noted that, in the case of no collision, the body control module needs to send a CAN message to the engine control module at regular intervals (that is, at the set time point). At this time, the collision signal in the CAN message The signal value is the second preset value (such as 1), indicating that there is no collision at present; similarly, in the cas...

Embodiment 2

[0063] see figure 2 , shows the fuel cut-off method in the second embodiment of the present invention, which is applied to the engine control module, and the engine control module can implement the method through software and / or hardware, and the method specifically includes step S11-step S15.

[0064] Step S11, receiving the multi-frame CAN message sent by the body control module, the CAN message includes the collision signal and its verification signal, and the multi-frame CAN message is the vehicle body control module at the set time point or Sent simultaneously when a collision signal is received.

[0065] Step S12, judging whether there is a frame in which the collision signal and the verification signal in the CAN message have both the first preset value.

[0066] Specifically, in this embodiment, the first preset value is 2, and the second preset value is 1. When step S12 judges that there is a frame of collision signal and its verification signal in the multi-frame ...

Embodiment 3

[0079] see image 3 , shows the fuel cut-off method in the third embodiment of the present invention, which is applied to the engine control module, and the engine control module can implement the method through software and / or hardware, and the method specifically includes step S21-step S23.

[0080] Step S21, receiving the multi-frame CAN message sent by the body control module, the CAN message includes a collision signal and its verification signal, and the multi-frame CAN message is the vehicle body control module at a set time point or Sent simultaneously when a collision signal is received.

[0081] Step S22, judging frame by frame whether the signal values ​​of the collision signal and the verification signal of the multi-frame CAN message are both the first preset value.

[0082] Step S23, when it is judged that the signal values ​​of the collision signal and the verification signal in the CAN message in one frame are both the first preset value, cut off the power su...

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Abstract

The present invention provides a fuel cut-off method, device, engine control module and system. The method includes: receiving a multi-frame CAN message sent by the vehicle body control module. The CAN message includes a collision signal and a verification signal thereof. The multi-frame CAN message is sent by the vehicle body control module at the set time point or when receiving the collision signal; judge whether there is a frame of the CAN message in the collision signal and the signal value of the verification signal is the first preset value; if so, cut off the power supply of the high-pressure oil pump to cut off the fuel. The present invention performs collision judgment through multi-frame CAN messages, and also adds a verification signal of the collision signal in the CAN messages. Even if individual CAN messages are disturbed when being transmitted on the CAN line in the whole process, other CAN messages are still The correct collision signal can be transmitted to avoid the wrong fuel cut operation of the engine control module.

Description

technical field [0001] The invention relates to the technical field of fuel control, in particular to a fuel cut-off method, device, engine control module and system. Background technique [0002] With the continuous increase of car ownership and the development of the road transportation industry, cars have entered thousands of households and become one of the main means of transportation that people rely on. As the requirements for vehicle functional safety are getting higher and higher, the redundant design of functions related to personal safety becomes very necessary. [0003] Among them, automatic fuel cut-off in the event of a collision is an important aspect of vehicle functional safety. Automatically cut off the fuel, which can effectively prevent the fuel from being ignited and explosion after collision, thus ensuring the life safety and property of drivers and passengers. [0004] Among the existing technologies, the current fuel cut-off scheme is as follows: th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K28/14B60R16/023
CPCB60K28/14B60R16/023
Inventor 谢颖茹龚晖
Owner JIANGLING MOTORS