Automotive fuel leak detection method

A fuel and leak detection technology, which is applied in the direction of measuring the acceleration and deceleration rate of the fluid and using the liquid/vacuum degree to measure the liquid tightness. Easy to use, simple and reasonable structure, low cost

Inactive Publication Date: 2009-06-03
SAIC-GM-WULING AUTOMOBILE CO LTD
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Problems solved by technology

However, if the fuel tank has been installed on the vehicle and then checked by this method, the fuel tank has to be removed, which is very inconvenient and cannot achieve the effect of leak detection of the entire fuel system

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[0013] The following content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

[0014] Such as figure 1 as well as figure 2 As shown, the automobile fuel oil leak detection method of the present invention comprises the following steps: pressurize the fuel tank; connect a U-shaped tube containing liquid at the interface; observe the change of the liquid level of the liquid in the U-shaped tube to determine whether the fuel tank is leaking Condition.

[0015] The pressurization steps described above can be performed using figure...

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Abstract

The invention provides an automotive fuel leak detection method, comprising the following steps of: pressurizing in a fuel tank; connecting up a U-shaped tube containing liquid at an interface; observing the change of liquid level in the U-shaped tube; and determining that whether the fuel tank is leaked. The automotive fuel leak detection method adopts a U-shaped mode, utilizes pressure change to lead the change of liquid level of the U-shaped tube to realize the leakproofness of detecting an automotive fuel system, thus leading the structure of the U-shaped tube to be simple and reasonable, the carry and use to be convenient and the cost to be low. The method is applicable to the state of the total automobile or test of parts.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a method for detecting automobile fuel oil leaks. Background technique [0002] In the past, the leak detection method for automobile fuel tanks was mainly to fill the tank with water, seal the filling port and other outlets, then turn the tank so that the center line of the filling port was perpendicular to the ground, and check whether there was water leakage from the filling port. However, if the fuel tank has been installed on the vehicle and then checked by this method, the fuel tank must be removed, which is very inconvenient and cannot achieve the effect of leak detection of the entire fuel system. Contents of the invention [0003] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a convenient and efficient automobile fuel leak detection method. [0004] The technical solution adopted by the present invention to solve the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/32
Inventor 赖玉龙郜晗庞晓军
Owner SAIC-GM-WULING AUTOMOBILE CO LTD
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