Special multifunctional valve for high-pressure oil tank of hybrid vehicle

By designing a multi-function valve for high-pressure fuel tanks of hybrid vehicles with integrated multi-function control, the problems of limited functions, high noise and long response time in the prior art are solved, and efficient and low-noise high-pressure fuel tank pressure relief control is achieved.

CN119712910AActive Publication Date: 2025-03-28DAISHENG AUTOMOTIVE TECHNOLOGY (SUZHOU) CO LTD
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Patent Information

Application Number
CN202510233263.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2025-03-28
Estimated Expiration
2045-02-28

AI Technical Summary

Technical Problem

The control valve function of the high-pressure fuel tank of existing hybrid vehicles is limited, and multiple functions cannot be controlled at the same time. There are noise problems and long response time problems, which cannot meet the pressure relief requirements of the high-pressure fuel tank.

Method used

A multi-function valve for high-pressure fuel tank of hybrid vehicles was designed, integrating the functions of refueling control valve, refueling control valve, slope exhaust valve and liquid collector. It uses irregularly shaped floats and new material phenolic resin, adds rubber shock absorbing pads to reduce noise, and optimizes the valve structure to improve response speed.

Benefits of technology

It realizes integrated multi-function control in small sizes, reduces noise, improves response speed, meets the pressure relief requirements of high-pressure fuel tanks, and improves overall thermal stability and wear resistance.

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Abstract

The invention provides a special multifunctional valve for a high-pressure oil tank of a hybrid vehicle, which comprises an upper cover fixedly connected with the high-pressure oil tank, and a lower shell positioned in the high-pressure oil tank and provided with a first accommodating cavity and a second accommodating cavity; the connecting piece is connected between the upper cover and the lower shell; the refueling control valve assembly is arranged in the first containing cavity of the lower shell and can float up and down in the first containing cavity, and the refueling amount is controlled. The gradient exhaust assembly is arranged in the second containing cavity of the lower shell and can float up and down in the second containing cavity to achieve exhaust. And the oil supplementing and filling control valve assembly is arranged on the connecting piece above the gradient exhaust assembly and used for controlling the oil filling amount during oil supplementing and filling. The valve integrates various control functions such as oil filling, oil supplementing, gradient exhaust and liquid collecting, the floater adopts the noise reduction design, noise is reduced, the oil filling control valve and the gradient exhaust adopt the second-order opening design, and large-range pressure relief control can be achieved within a short time.
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