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A fuel tank isolation valve

A technology of isolating valve and fuel tank, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of increasing system complexity, poor consistency of spring machining, and difficult control of spring cumulative error.

Active Publication Date: 2017-08-25
JIANGSU AOLIWEI SENSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical processing consistency of the spring is relatively poor, and the cumulative error of the three springs is more difficult to control
Increased system complexity and decreased product yield

Method used

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  • A fuel tank isolation valve
  • A fuel tank isolation valve
  • A fuel tank isolation valve

Examples

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Embodiment Construction

[0035] like Figure 1-7 A fuel tank isolation valve shown includes a fuel tank pipeline 5, a solenoid valve assembly 3, an air release valve assembly 1, an air supply valve assembly 2, and a carbon canister pipe 4, a valve body 301 of the solenoid valve assembly 3, and a second valve body of the air release valve assembly 1. The first housing 101 and the second housing 201 of the air supply valve assembly 2 are integrally formed, and the bottoms of the solenoid valve assembly 3, the air release valve assembly 1, and the air supply valve assembly 2 are all connected to the fuel tank pipeline 5 to form an air circuit The upper parts of the solenoid valve assembly 3, the air release valve assembly 1, and the air supply valve assembly 2 are all connected to the carbon canister pipeline 4, and form a gas path communication. The spaces are connected together through the shells between them;

[0036] The solenoid valve assembly 3 includes a support 306 that divides the valve body 30...

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PUM

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Abstract

The invention discloses an oil tank isolating valve in the field of valves. The oil tank isolating valve comprises an oil tank pipeline, an electromagnetic valve assembly, a release valve assembly, a gulp valve assembly and a carbon tank pipeline. The bottom of the electromagnetic valve assembly, the bottom of the release valve assembly and the bottom of the gulp valve assembly are all connected to the oil tank pipeline and air channels for communication are formed. The upper part of the electromagnetic valve assembly, the upper part of the release valve assembly and the upper part of the gulp valve assembly are all connected to the carbon tank pipeline and air channels for communication are formed. The electromagnetic valve assembly, the release valve assembly and the gulp valve assembly are connected together through shells of the electromagnetic valve assembly, the release valve assembly and the gulp valve assembly. A release valve and a gulp valve are made to cooperate to work, so that the safety and reliability of an oil tank during usage are improved. Meanwhile, an electromagnetic valve is opened during oil filling, and steam in the oil tank is rapidly discharged into a carbon tank in a controlled flow, so that the waiting time for oil filling is shortened, and a fill limit venting valve (FLVV) can be prevented from being blocked; the oil tank isolating valve can be used for a motor vehicle control system.

Description

technical field [0001] The invention relates to a valve, in particular to an oil tank isolation valve. Background technique [0002] In a typical evaporative emissions management system, fuel vapors are vented to the carbon canister through the fuel tank GVV valve. The carbon canister contains activated carbon, which has the function of absorbing fuel vapor. When the engine is started, fresh air is sucked into the carbon tank, and together with the fuel vapor absorbed by the activated carbon, it is sent to the engine to participate in combustion. However, in plug-in hybrid models, there is a long-term use of electric drive mode driving, and the carbon tank has no desorption function in electric mode. If the steam in the fuel tank has been discharged to the carbon tank, it is easy to cause the carbon tank to be saturated. The saturated fuel vapor will be directly discharged into the environment, causing environmental pollution. Therefore a tank isolation valve is required...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/06F16K1/32B60K15/035
CPCB60K15/035F16K1/32F16K31/0655
Inventor 顾常飞孙海鑫俞斌强李冬梅糜帅
Owner JIANGSU AOLIWEI SENSING TECH
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