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Method for detecting dynamic air permeability of gasoline fuel tank assembly

A detection method and fuel tank technology, applied in vehicle testing, mechanical component testing, machine/structural component testing, etc., can solve problems such as reduced working capacity and permanent damage of carbon tanks

Pending Publication Date: 2021-12-24
CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid fuel entering the carbon tank will cause a sharp decline in the working capacity of the carbon tank, which cannot be recovered by flushing, causing permanent damage

Method used

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  • Method for detecting dynamic air permeability of gasoline fuel tank assembly

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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0035] A fuel tank is a device for storing fuel in a vehicle. Due to the volatile nature of gasoline, one or more gravity valves are arranged on the upper surface of the fuel tank assembly during design, so that the fuel tank can be used under any working conditions (stationary or dynamic driving, at any angle). The volatilized oil vapor is discharged into the atmosphere to ensure that the pressure of the fuel tank is not too high. The shape of the fuel tank is generally designed to be irregular according to the layout requirements. Excessive pressure of the fuel tank will cause the deformation of the fuel tank. Generally, the pressure of 10kPa will cause a certain weak position of the ...

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Abstract

The invention provides a method for detecting the dynamic air permeability of a gasoline fuel tank assembly. The method comprises a fuel tank assembly to be detected and a carbon tank; the fuel tank assembly and the carbon tank are connected through a connecting pipeline; the connecting pipeline is provided with a collecting bottle; the collecting bottle is provided with a bottle plug; the connecting pipeline comprises a first connecting pipe and a second connecting pipe; one end of the first connecting pipe is connected with a gravity valve on the fuel tank assembly to be detected, and the other end of the first connecting pipe penetrates through the bottle plug and extends into the collecting bottle. According to the method for detecting the dynamic air permeability of the gasoline fuel tank assembly, the problems in the ventilation process of the fuel tank in the running process of a vehicle can be well found, and the method is not influenced by the actual road environment and a driver; and dynamic air permeability conditions under various environmental conditions can be simulated by a method of adjusting an air permeability amount, and dynamic air permeability effects under different liquid level conditions can be verified by loading different oil quantities.

Description

technical field [0001] The invention belongs to the field of test and test, and in particular relates to a method for detecting the dynamic air permeability of a gasoline fuel tank assembly. Background technique [0002] There is also the problem of fluid dynamic leakage while the vehicle is running. During the running of the vehicle, due to the heat dissipation of the fuel pump and the burning of the exhaust pipe, the temperature in the fuel tank will increase and promote the evaporation of fuel, especially in high altitude and high temperature areas. Increased evaporation results in a continuous need for large amounts of oil vapor to exit the fuel tank assembly through the gravity valve. During this process, the driving of the vehicle will cause the oil in the fuel tank to roll over. If the oil moves to the vicinity of the gravity valve during this process, the liquid gasoline will be taken out of the fuel tank assembly from the gravity valve through the exhaust flow due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M17/007G01M3/32
CPCG01M13/00G01M17/007G01M3/32
Inventor 李菁元陈强杨正军凌健钱国刚窦艳涛吕赫仲崇智张泰钰孙家兴刘乐耿培林
Owner CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
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