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
CN101446512AInactive Publication Date: 2009-06-03SAIC-GM-WULING AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SAIC-GM-WULING AUTOMOBILE CO LTD
Publication Date
2009-06-03
Estimated Expiration
Not applicable Β· inactive patent

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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.
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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 ...

Claims

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