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Failure detection method and device of gas supply system and electronic control unit

A technology of electronic control unit and air supply system, which is applied in the field of vehicles, can solve problems such as low efficiency of fault detection, achieve automatic detection and improve detection efficiency

Active Publication Date: 2020-01-07
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a fault detection method, device, and electronic control unit for a gas supply system to solve the problem of low fault detection efficiency in the prior art by manually detecting whether a voltage regulator is faulty

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  • Failure detection method and device of gas supply system and electronic control unit
  • Failure detection method and device of gas supply system and electronic control unit
  • Failure detection method and device of gas supply system and electronic control unit

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Embodiment Construction

[0066] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0067] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other than...

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Abstract

The embodiment of the invention provides a failure detection method and device of a gas supply system and an electronic control unit. The method comprises the steps that after it is detected that an electronic control unit is powered on and an engine is started, state parameters of the engine are obtained, according to the state parameters, whether the engine is in the preset injection valve shutdown working condition or not is judged, if the engine is in the preset injection valve shutdown working condition, gas pressure value of a gas rail is obtained, if the gas pressure value is larger than or equal to the first preset pressure value, failure prompt existing in a voltage stabilizer is sent to an alarm device, automatic detection of the failure of the voltage stabilizer is achieved, thewhether the failure exists in the voltage stabilizer or not is determined according to the obtained test result without waiting for manual specific test operation of the vehicle, and the detection efficiency of the failure of the voltage stabilizer can be improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of vehicles, and in particular to a fault detection method, device and electronic control unit for an air supply system. Background technique [0002] The gas supply device of a natural gas engine consists of a gas tank, a gas shut-off valve, a gas supply pipeline for a voltage regulator, a gas rail, and an injection valve (such as figure 1 shown), wherein the voltage stabilizer is a mechanical structure whose function is to control the flow of gas entering the gas rail, thereby adjusting the gas pressure in the gas rail. When the voltage regulator fails, the voltage regulator cannot control the amount of gas entering the gas rail, and the gas pressure in the gas rail may be too high or too low, resulting in insufficient engine power and abnormal vehicle operation. drive. Therefore, in order to prevent the vehicle from being unable to run normally due to failure of the voltage reg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02F02D41/00F02D41/22
CPCF02D41/0027F02D41/22F02D2041/228F02D2200/602F02M21/0239F02M21/0248F02M21/0293Y02T10/30Y02T10/40
Inventor 曹石秦涛黄玉平魏倩雯李苑玮
Owner WEICHAI POWER CO LTD
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