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Pressure valve for fuel tank

A technology for pressure valves and fuel tanks, which is applied in the direction of liquid fuel feeders, valve details, control valves, etc., and can solve problems such as unset gas backflow

Pending Publication Date: 2020-12-25
阿尔伊汽车系统(宁波)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing above-mentioned pressure valve for the fuel tank, the inside of the pressure valve is not provided with a structure to prevent the backflow of gas from the nozzle.

Method used

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  • Pressure valve for fuel tank
  • Pressure valve for fuel tank
  • Pressure valve for fuel tank

Examples

Experimental program
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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment: see Figure 1 to Figure 4 , a fuel tank pressure valve, comprising a main casing 1 with an upper end opening 100, the main casing 1 includes a first chamber 11 and a second chamber 12, the first chamber 11 and the second chamber The cavities 12 communicate with each other through a channel 200 , and a bottom cover 10 sealing the bottom of the first cavity 11 is provided at the bottom of the first cavity 11 .

[0021] A floating spool 2 is movably arranged in the first cavity 11, and a spring 8 elastically biasing the floating spool provided between the floating spool 2 and the bottom cover 11 passes through the floating spool 2 It is active in the first chamber 11 so that the floating spool 2 closes or opens the channel 200 . On one side of the second cavity 12, a diversion nozzle 3 is fixedly arranged, and it communicates with the inside of...

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PUM

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Abstract

The invention provides a pressure valve for a fuel tank. The pressure valve comprises a main shell, the main shell comprises a first containing cavity and a second containing cavity, the first containing cavity communicates with the second containing cavity through a channel, and a bottom cover for sealing the bottom of the first containing cavity is arranged at the bottom of the first containingcavity; a floating valve element is arranged in the first containing cavity, a spring elastically pressing the floating valve element in a bias mode is arranged between the floating valve element andthe bottom cover, and a flow guide nozzle communicating with the interior of the second containing cavity is arranged on one side of the second containing cavity; and a sealing base is arranged in thesecond containing cavity, and a sealing plug block is arranged on the sealing base. According to the pressure valve for the fuel tank, through the sealing base and the sealing plug block which are arranged in the second containing cavity, backflow gas at the flow guide nozzle can be prevented from entering the fuel tank.

Description

technical field [0001] The present invention relates to a valve device, and more particularly, to a pressure valve for a fuel tank. Background technique [0002] Generally, a fuel pump is driven by a DC motor to obtain electric power to supply fuel stored in the fuel tank to the injector. The fuel pump is divided into an external fuel pump installed in the engine room and an external fuel pump installed in the fuel tank. Most of the built-in fuel pumps in the car are built-in fuel pumps that suppress the noise of the fuel pump and prevent air lock and fuel pulsation. In addition, a pressure valve for the fuel tank is provided in the fuel tank, and the fuel or boil-off gas in the fuel tank is prevented from leaking to the outside by the pressure valve for the fuel tank when the vehicle overturns. [0003] That is, because the fuel of a car has high volatility, it is easy to evaporate into a gaseous state under high outdoor temperatures such as summer. When the evaporated gas...

Claims

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Application Information

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IPC IPC(8): F16K17/36F16K15/02F16K27/08F02M37/00B60K15/03
CPCB60K2015/03256B60K2015/03289F02M37/0023F16K15/02F16K17/36F16K27/08
Inventor 李海波王凯
Owner 阿尔伊汽车系统(宁波)有限公司