The invention relates to an automobile fuel tank valve body arrangement method and structure. The valve body arrangement structure comprises a fuel tank upper shell, a safety valve, an evaporation pipe, an oil discharge valve and an oil discharge pipe. The oil tank upper shell is provided with an air vent, the safety valve is installed on the inner wall of the oil tank upper shell, and the evaporation pipe is communicated with the air vent and the safety valve. A sinking groove is further formed in the oil tank upper shell, and the evaporation pipe passes through the sinking groove to form a sinking section; the oil discharge valve is mounted on the inner wall of the oil tank upper shell; the oil discharge pipe is communicated with the oil discharge valve and the sinking section; the oil drain valve is arranged to communicate with the sinking section of the evaporation pipe, when the liquid level in the fuel tank descends to a certain height, fuel accumulated in the sinking section flows back into the fuel tank through the oil drain valve, and the situation that the pressure inside and outside the right half part of the fuel tank is unbalanced due to pipeline blockage of the sinking section is avoided; 2, the oil discharge valve is preferably a GVV valve, and when the oil tank is full of the oil level, an inner valve body of the GVV valve floats upwards under buoyancy and is automatically closed; and when the fuel level drops to a certain height, the floater in the GVV valve sinks and is automatically opened.
本发明涉及一种汽车燃油箱阀体布置方法及结构,阀体布置结构包括油箱上壳体、安全阀、蒸发管、排油阀和排油管;油箱上壳体上设置有通气口,安全阀安装在油箱上壳体的内壁,蒸发管连通通气口和安全阀;油箱上壳体上还设置有下沉槽,蒸发管经过下沉槽形成下沉段;排油阀安装在油箱上壳体的内壁,排油管连通排油阀和下沉段;本发明通过设置一排油阀连通蒸发管的下沉段,在燃油箱内液位下降到一定高度时,下沉段内累积的燃油通过排油阀流回油箱内,避免下沉段管路堵塞导致右半部分油箱内外压力失衡;2、排油阀优选为GVV阀,油箱满油位时,GVV阀的内部阀体受浮力上浮自动关闭。燃油液位下降到一定高度,GVV阀的内部浮子下沉自动打开。
Automobile fuel tank valve body arrangement method and structure
一种汽车燃油箱阀体布置方法及结构
2022-03-25
Patent
Electronic Resource
Chinese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
Automobile fuel tank isolating valve and valve element sealing structure
European Patent Office | 2022
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