The invention discloses a fuel tank shell for preventing volatilization of a fuel. The fuel tank shell is included, an oil inlet pipe and a breather pipe are fixedly connected to the upper surface ofthe fuel tank shell, a piston column and a piston pipe are slidably connected to the inner wall of the breather pipe, the piston column is made of rubber, the top end of the piston column is fixedly connected with a first compression spring, the other end of the first compression spring is fixedly connected with the inner top wall of the breather pipe, and the opposite surfaces of the piston column and the piston pipe are fixedly connected with connecting arc plates. According to the internal ventilation type fuel tank shell, the piston column, the piston pipe, the first compression spring, the second compression spring, an air inlet and an air outlet are arranged so that when the internal pressure of an oil tank is reduced, the piston column drives the piston pipe to move downwards to expose the air inlet, and under the action of the first compression spring and the second compression spring at ordinary times, the piston column and the piston pipe block and seal the air inlet and theair outlet correspondingly so that the fuel in the fuel tank shell is effectively prevented from volatilizing.
本发明公开了一种用于防止燃料挥发的油箱壳体,包括油箱壳体,所述油箱壳体的上表面分别固定连接有进油管和通气管,所述通气管的内壁分别滑动连接有活塞柱和活塞管,所述活塞柱的材料为橡胶,所述活塞柱的顶端固定连接有第一压缩弹簧,且第一压缩弹簧的另一端与通气管的内顶壁固定连接,所述活塞柱和活塞管的相对面固定连接有连接弧板。该内通气式油箱壳体,通过设置活塞柱、活塞管、第一压缩弹簧、第二压缩弹簧、进气口和出气口,便于在油箱内部压力降低时,活塞柱带动活塞管向下运动使进气口露出,而在平时则在第一压缩弹簧和第二压缩弹簧的作用下,活塞柱和活塞管分别将进气口和出气口堵住密封,从而有效的防止油箱壳体内部燃料挥发。
Fuel tank shell for preventing volatilization of fuel
一种用于防止燃料挥发的油箱壳体
2021-02-05
Patent
Electronic Resource
Chinese
Fuel tank venting system for preventing negative pressure generation of fuel tank
European Patent Office | 2017
|Apparatus for preventing fuel flowing of vehicle fuel tank
European Patent Office | 2019
|Fuel tank venting system for preventing negative pressure generation of fuel tank
European Patent Office | 2021