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Leakage detection device of fuel oil evaporation system

A technology of fuel evaporation system and leakage detection device, which can solve the leakage of fuel evaporation system by detecting the appearance of fluid at the leakage point, by measuring the rate of increase and deceleration of fluid, and using liquid/vacuum for liquid tightness measurement. Difficult to troubleshoot and other issues

Active Publication Date: 2020-01-07
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a fuel evaporation system leakage detection device and method, aiming to solve the technical problem that the leakage point of the fuel evaporation system is difficult to check

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  • Leakage detection device of fuel oil evaporation system
  • Leakage detection device of fuel oil evaporation system
  • Leakage detection device of fuel oil evaporation system

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Embodiment Construction

[0054] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0055] refer to figure 1 , figure 1 It is a structural block diagram of the first embodiment of the fuel evaporation system leakage detection device of the present invention; the device includes: a gas storage tank 100, an electric pump 200, a pressure sensing unit 300, a voltage control unit 700 and a colored smoke generator 400; wherein,

[0056] The input end of the electric pump 200 is connected to the output end of the gas storage tank 100 and the output end of the colored smoke generator 400, and the controlled end of the electric pump 200 is connected to the control end of the voltage control unit 700 connected, the output end of the electric pump 200 is connected to the input end of the pressure sensing unit 300, the output end of the pressure sensing unit 300 is connected to the receiving end of the voltage ...

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Abstract

The invention, which belongs to the technical field of fuel oil leakage detection, discloses a leakage detection device of a fuel oil evaporation system. The leakage detection device comprises an electric pump, a pressure sensing unit, a voltage control unit, and a color smoke generator. The electric pump is used for filling a fuel oil evaporation system with gas in a gas storage tank. The pressure sensing unit is used for detecting a current pressure value in the fuel oil evaporation system. The voltage control unit is used for receiving the current pressure value fed back by the pressure control unit and determining whether the fuel oil evaporation system has an unqualified leakage point or not according to the current pressure value and a first preset pressure value. The color smoke generator is used for outputting color smoke to the fuel oil evaporation system when an unqualified leakage point exists in the fuel oil evaporation system so as to prompt the position of a leakage point. In addition, the invention further discloses a leakage detection method of the fuel oil evaporation system, so that the leakage points of the fuel oil evaporation system are convenient to remove, the detection efficiency is improved, and maintenance procedures are reduced.

Description

technical field [0001] The invention relates to the technical field of fuel oil leakage detection, in particular to a fuel oil evaporation system leakage detection device and method. Background technique [0002] The vehicle OBD (On Board Diagnostics) uses the principle of negative pressure detection to detect the leakage fault of the fuel evaporation system. After the fuel evaporation system is found to have a leak of more than 0.5 or 1mm small hole, it is necessary to check the leak point. The fuel evaporation system of the National VI standard has many parts and complicated pipelines, and the leakage is small, and the colorless gasoline vapor cannot be eliminated with the naked eye. The OBD of the whole vehicle can detect the leakage point, but it cannot know which component or which pipeline has the leakage point. At present, the leak point investigation can only be based on the experience of maintenance personnel, replace the pipelines and components one by one, and t...

Claims

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Application Information

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IPC IPC(8): G01M3/26G01M3/20
CPCG01M3/20G01M3/26
Inventor 吴昌庆马骁宇刘聪聪
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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