The invention relates to a fuel tank structure. The purpose of the present invention is to suppress closing of a float of a full-tank limiting valve by airflow. A fuel tank structure (10) is provided with: a fuel tank (12); a canister (20) capable of adsorbing and desorbing vapor generated in the fuel tank (12); a vapor passage (21) that connects the fuel tank (12) and the canister (20); and a full tank control valve (40) connected to an end of the vapor passage (21) on the fuel tank side. A full tank control valve is provided with: a full tank restriction valve (42) having a float (43) which floats by the buoyancy of fuel in a fuel tank (12) and which closes the valve when the tank is full; and a diaphragm actuator (45) that operates using the pressure difference between the pressure inside the fuel tank (12) and the pressure inside the vapor passage (21). The diaphragm actuator (45) is provided with an operating member (67) that moves in the direction in which the float (43) is pressed by the operation of the diaphragm actuator so that the float (43) does not move in the direction in which the valve is closed.
本发明涉及燃料箱构造。抑制由气流引起的满箱限制阀的浮标的闭阀。燃料箱构造(10)具备:燃料箱(12);吸附罐(20),其能够对在燃料箱(12)内产生的蒸气进行吸附以及脱附;蒸气通路(21),其连接燃料箱(12)和吸附罐(20);和满箱控制阀(40),其与蒸气通路(21)的靠燃料箱侧的端部连接。满箱控制阀具备:满箱限制阀(42),其具有利用燃料箱(12)内的燃料的浮力浮起并在满箱时闭阀的浮标(43);和隔膜致动器(45),其利用燃料箱(12)的箱内压力与蒸气通路(21)内的压力的压力差进行工作。隔膜致动器(45)具备工作构件(67),该工作构件通过隔膜致动器的工作而向按压浮标(43)的方向移动,以使浮标(43)不向闭阀方向移动。
Fuel tank structure
燃料箱构造
2022-11-08
Patent
Elektronische Ressource
Chinesisch
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 |