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

A fuel cut-off and control module technology, which is applied to the safety device of the power plant control mechanism, motor vehicles, 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: 2020-10-30
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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  • Fuel cut-off method and device, engine control module and fuel cut-off system
  • Fuel cut-off method and device, engine control module and fuel cut-off system
  • Fuel cut-off method and device, engine control module and fuel cut-off system

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Experimental program
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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 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.

[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 one frame of the CAN message are both the first preset value, cut off the powe...

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Abstract

The invention provides a fuel cut-off method, a fuel cut-off device, an engine control module and a fuel cut-off system. The method comprises the steps that a multi-frame CAN message sent by a vehiclebody control module is received, wherein the CAN message comprises a collision signal and a check signal of the collision signal, and the multi-frame CAN message is sent by the vehicle body control module at a set time point or when the collision signal is received at the same time; whether the signal values of the collision signal and the check signal in one frame of CAN message are first presetvalues or not; and if so, power supply of the high-pressure oil pump is cut off to cut off fuel oil. According to the invention, collision judgment is carried out through multiple frames of CAN messages; the check signals of the collision signals are added to the CAN messages, even if some CAN messages are interfered when being transmitted on the CAN bus in the whole process, other CAN messagescan still transmit correct collision signals, so that an engine control module is prevented from executing wrong fuel cut-off operation.

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 Applications(China)
IPC IPC(8): B60K28/14B60R16/023
CPCB60K28/14B60R16/023
Inventor 谢颖茹龚晖
Owner JIANGLING MOTORS