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    • 12. 发明授权
    • Fuel tank venting system for vehicles
    • 车辆燃油箱排气系统
    • US5868119A
    • 1999-02-09
    • US72928
    • 1998-05-05
    • Yasunobu EndoAtsushi OtaTsuyoshi ChiyouHisayuki GomaMasaaki Horiuchi
    • Yasunobu EndoAtsushi OtaTsuyoshi ChiyouHisayuki GomaMasaaki Horiuchi
    • B60K15/04F02M33/02F02M37/00
    • F02M33/02
    • A fuel tank venting system for a vehicle comprises first and second vent passages connected to the fuel tank, and a third vent passage connected to the fuel tank. The first to third vent passages each have one end thereof located in the fuel tank at an upper front location thereof, an upper rear location thereof, and an upper central location thereof, respectively. An anti-overcharging valve is arranged in the fuel tank and connected to the other end of the third vent passage. A first valve is connected to the one ends of the first and second vent passages, and a confluent vent passage extends from the first valve toward an internal combustion engine installed in the vehicle. A second valve is arranged across the confluent vent passage on one side of the first valve closer to the engine. The third vent passage has the other end thereof connected to the confluent vent passage at a location intermediate between the first valve and the second valve. The sum of set pressure of the first valve and set pressure of the second valve is set to a value higher than head pressure of the fuel tank assumed when the fuel tank is fully charged.
    • 用于车辆的燃料箱排放系统包括连接到燃料箱的第一和第二排气通道以及连接到燃料箱的第三排气通道。 第一至第三排气通道各自的一端分别位于燃料箱的上前部位置,其上部后部位置和上部中央位置。 在该燃料箱内配置有防过充阀,与第三排气通路的另一端连接。 第一阀连接到第一和第二排气通道的一端,汇流排气通道从第一阀向安装在车辆中的内燃机延伸。 第二阀布置在靠近发动机的第一阀一侧的汇合排气通道上。 第三排气通道的另一端在第一阀和第二阀之间的位置处连接到汇合排气通道。 第一阀的设定压力和第二阀的设定压力的总和设定为高于当燃料箱完全充电时假定的燃料箱的头部压力的值。