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Combination valve for automobile fuel tank

A combination valve and fuel tank technology, which is applied in the direction of the arrangement combined with the fuel supply of internal combustion engines, balance valves, valve devices, etc., can solve the problems of large volume, inconsistent performance, and different buoyancy of combined valves, and achieve reduced complexity and size Small, low-cost effect

Active Publication Date: 2021-07-16
YAPP AUTOMOTIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a combined valve for automobile fuel tanks to solve the problem that the combined valves in the prior art have large volume, many parts and high cost. Different buoyancy results in different buoyancy, and there will be problems with inconsistent performance at different inclination angles

Method used

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  • Combination valve for automobile fuel tank
  • Combination valve for automobile fuel tank

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Embodiment Construction

[0028] The technical solution of the present invention is described in detail below through the examples, and the following examples are only exemplary and can only be used to explain and illustrate the technical solution of the present invention, rather than being interpreted as a limitation to the technical solution of the present invention.

[0029] like figure 1 and figure 2 As shown, the present application provides a combination valve for automobile fuel tanks, the valve includes: a valve body shell 1, the valve body shell 1 defines the space size of the valve, the valve body shell 1 is a cylinder with an opening at the top, The side is provided with the first exhaust window and the top exhaust hole, the position and height of the first exhaust window can be adjusted; the bottom of the valve body shell 1 is provided with a spring connection structure for connecting the first float spring 4 At the lower end, the upper end of the first float spring 4 is connected to the ...

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Abstract

The invention relates to a combination valve for an automobile fuel tank. The combination valve comprises a valve body shell, a valve body upper cover, a first floater spring, a first floater, a first floater sealing gasket, a pressure maintaining structure, a boss, a second floater spring, a second floater and a sealing structure. A brand new floater arrangement mode is used, a CROV floater is arranged in an FLVV floater, and meanwhile, a pressure maintaining module is integrated on the FLVV floater, the purpose of simultaneously achieving the functions of FLVV and CROV valves is achieved, the fuel tank has the advantages of being small in size, few in parts and low in cost, the number of fuel tank pipelines can be reduced, and the complexity of arrangement of a fuel tank exhaust system can be reduced; and in addition, due to the fact that the two floaters are of a symmetrical structure, the valve has the characteristic that the performance is kept consistent at different inclination angles.

Description

technical field [0001] The invention belongs to the field of automobile fuel tanks, in particular to a combination valve of an automobile fuel tank with both FLVV and CROV functions. Background technique [0002] At present, the ventilation system in the automobile fuel tank is generally composed of two types of valves, including the fuel level control valve (FLVV) and the rollover pressure maintaining valve (CROV). The steam is discharged in time, and when the rated volume is reached, it is closed in time; the function of the overturning pressure-holding valve is to adjust the internal pressure of the fuel tank, especially to control the amount of refill when refilling. At the same time, both types of valves have anti-leakage functions when the fuel tank is tilted or turned over. [0003] At present, a combination valve has appeared in the field of automotive fuel tanks, which integrates the functions of FLVV and CROV. This type of combination valve can be divided into two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/20F16K21/18F16K17/12F16K17/164B60K15/03B60K15/035
CPCF16K31/20F16K21/18F16K17/12F16K17/164B60K15/03B60K15/03519B60K2015/03256Y02T10/30
Inventor 姜林高德俊吕昊朱凯李进
Owner YAPP AUTOMOTIVE PARTS
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