Unlock instant, AI-driven research and patent intelligence for your innovation.

Valves with pilot control especially for fuel vapor retention systems

一种先导控制阀、阀门的技术，应用在用于在密封面上卸压的装置、装料系统、与内燃机燃料供给结合的布置等方向，达到简单结构的效果

Active Publication Date: 2017-10-27
A KAYSER AUTOMOTIVE SYST
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these pilot-operated control valves exhibit the disadvantage of requiring many components, since this type of valve comprises two valves, thus requiring two valve bodies or discs with appropriate offsets devices (such as springs) and corresponding operating devices (such as drives, plunger rods, etc.)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Valves with pilot control especially for fuel vapor retention systems
  • Valves with pilot control especially for fuel vapor retention systems
  • Valves with pilot control especially for fuel vapor retention systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Such as figure 1 and Figure 4 As shown in , the valve releases fluid passage between the first valve port 50 and the second valve port 60 in its open position. The valve body 12 can be pressed against the valve seat 11 to close the fluid passage of the main valve 10 . Furthermore, the diaphragm 22 of the pilot control valve 20 can close the opening of the passage 14 provided in the valve body 12 of the main valve 10 so as to prevent fluid from passing through the passage 14 .

[0029] exist figure 2 The closed position of the main valve 10 and the pilot control valve 20 is shown in . To close the valve, the plunger 30 is pressed against the top of the membrane 22 so that the membrane 22 deflects and abuts at the entrance to the channel 14 due to the deflection. In this way, the passage 14 is closed by the sealing surface 22a of the diaphragm 22 so as to close the passage of fluid from the first valve port 50 into the second valve port 60 through the opening 16 and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a valve with pilot control, especially for a fuel vapor retention system, comprising: a main valve (10) comprising a valve body (12) for opening and closing a fluid passage; a pilot control valve (20), It is provided at the valve body (12) for opening and closing the channel (14) provided in the valve body (12), and has an elastically deformable diaphragm (22); and a plunger (30) for The diaphragm (22) presses against the entrance and exit of the passage (14), thereby closing the passage (14), and displacing the valve body (12) in the closing direction to abut against the valve seat (11).

Description

technical field [0001] The present invention relates to a valve with pilot control, especially for use as a fuel tank shut-off valve for a fuel (fuel) vapor retention system. Furthermore, the present invention relates to a fuel vapor retention system. Background technique [0002] Today, for environmental reasons, the fuel vapors generated in the fuel tanks of motor vehicles are no longer vented into the atmosphere, but are collected in activated carbon containers so that the fuel vapors are fed to the suction line and the fuel vapors burned during engine operation fuel vapors. For regeneration or to purge the charcoal container, the connecting line between the fuel tank and the charcoal container can be temporarily disconnected. For this purpose, a corresponding tank shut-off valve, usually actuated electromagnetically, is arranged in the connecting line between the fuel tank and the activated carbon container. [0003] Due to the relatively large flow cross-section of s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/34F02M25/08B60K15/035F16K7/16F16K31/06
CPCB60K15/03519B60K2015/03276B60K2015/03302F02M25/0836F16K31/0655F16K39/024
Inventor 斯特凡·黑廷格托尔斯滕·格利希
Owner A KAYSER AUTOMOTIVE SYST