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Method for diagnosing fuel tank leaks, and apparatus applying same

A technology of fuel tanks and equipment, which is applied to the layout combined with the fuel supply of internal combustion engines, mechanical equipment, and non-fuel substances added to fuel, etc., can solve the problems of increased fuel tank diagnosis rate and inability to properly diagnose fuel tank leakage, etc. for easy diagnosis

Active Publication Date: 2013-05-15
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if a negative pressure cannot be formed when the vehicle is stopped, or if the diagnostic rate of the fuel tank must be increased due to other conditions, the leak of the fuel tank cannot be properly diagnosed by ordinary techniques

Method used

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  • Method for diagnosing fuel tank leaks, and apparatus applying same
  • Method for diagnosing fuel tank leaks, and apparatus applying same
  • Method for diagnosing fuel tank leaks, and apparatus applying same

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Embodiment Construction

[0023] Hereinafter, referring to the accompanying drawings, the device for diagnosing the leakage of the fuel tank 100 according to an exemplary embodiment of the present invention will be described in more detail.

[0024] figure 1 It is a view showing the structure of an apparatus for diagnosing leakage of the fuel tank 100 according to an embodiment of the present invention.

[0025] Such as figure 1 As shown in the figure, the structure for diagnosing the leakage of the fuel tank 100 includes a fuel tank 100, a sensor, a combustion chamber, a carbon canister 200, a canister bleed valve 220, a canister shutoff valve, and an electronic control unit 300. The fuel tank is used for Store fuel provided to the vehicle for operation of the vehicle, the sensor is used to measure the pressure value in the fuel tank 100, the combustion chamber is used to burn the fuel injected when the fuel injection system is operated, and the carbon canister is used for evaporation The gas controller is...

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Abstract

The present invention relates to a method for diagnosing fuel tank leaks, and to an apparatus applying same. The method according to the present invention is configured to adjust the pressure of the fuel tank of a vehicle being driven to the leak diagnosis pressure, and to diagnose the fuel tank for leaks as soon as the vehicle is stopped. Accordingly, the method of the present invention can adjust the pressure of the fuel tank of a vehicle to the leak diagnosis pressure prior to the stopping of the vehicle, and can easily diagnose whether or not there is a leak in the fuel tank when the vehicle is stopped, even in cases where negative pressure is formed or diagnostic accuracy must be increased while the vehicle is stopped. The fuel tank may thus be diagnosed for leaks.

Description

Technical field [0001] The invention relates to a device and method for diagnosing leaks in a fuel tank. More specifically, the present invention relates to an apparatus and method for diagnosing fuel tank leakage, which can control the pressure of the fuel tank during the driving of the vehicle and immediately diagnose the fuel tank leakage when the vehicle is stopped. Background technique [0002] Generally, when the vehicle is stopped, after a negative pressure is formed in the fuel tank, in a state where the fuel tank is closed, the degree of increase in the internal pressure of the fuel tank is checked to diagnose fuel tank leakage. [0003] However, if the negative pressure cannot be formed when the vehicle is stopped, or the diagnosis rate of the fuel tank must be increased due to other conditions, the leak of the fuel tank cannot be properly diagnosed by ordinary technology. Summary of the invention [0004] [Technical Objectives of the Invention] [0005] Therefore, the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D45/00B60K15/06B60K15/03
CPCF02D41/22Y02T10/40F02D2041/225F02D45/00F02M25/0809F02D2200/0602F02D41/003
Inventor 金汉信孙庸准
Owner VTESCO TECH GMBH
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