The invention discloses a multifunctional combination valve, and relates to the field of valves of ventilation systems in automobile fuel tanks. The valve comprises a valve body shell and a valve body upper cover, a first floater is connected with the bottom of the valve body shell, the first floater is of a step structure, a second floater is overlapped on the step surface of the first floater, and a second through hole is formed in the middle of the second floater. The first floater and the second floater can move up and down within a certain range along the axis of the valve. A liquid level control valve FLVV and a turnover pressure retaining valve CROV can be integrated in one valve body, and the functions of the liquid level control valve FLVV and the functions of the turnover pressure retaining valve CROV are achieved at the same time. The number of fuel tank pipelines can be decreased, the arrangement complexity of a fuel tank exhaust system is reduced, the size is small, parts are few, and cost is low. In addition, the characteristic that the performance is kept consistent at different inclination angles is achieved.
本发明公开了一种多功能组合阀,涉及汽车燃油箱中通气系统的阀门领域,该阀门包括:阀体外壳和阀体上盖,阀体外壳底部连接的第一浮子,第一浮子为台阶结构,第二浮子叠加在第一浮子的台阶面上,第二浮子中间设置有第二通孔,第一浮子和第二浮子都可以沿阀门的轴线在一定范围内上下移动。本发明可以将液位控制阀FLVV和翻转保压阀CROV的集成在一个阀体内,同时具备两者的功能。可以减少燃油箱管路数量,降低了燃油箱排气系统布置的复杂程度,尺寸小,零部件少,成本低;并且具备在不同的倾斜角度下,保持性能一致的特性。
Multifunctional combination valve
一种多功能组合阀
2021-07-23
Patent
Electronic Resource
Chinese
European Patent Office | 2024
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