公开(公告)号：US3728846A

公开(公告)日：1973-04-24

申请号：US3728846D

申请日：1971-07-22

Applicant: SAAB SCANIA AB

Inventor： NILSON D

IPC: B01D46/00 ,  B60K15/035 ,  F02M25/08 ,  B60K15/02

CPC classification number: B60K15/03504 ,  B01D46/00 ,  F02M25/0854 ,  F02M25/089 ,  F02M2025/0863 ,  Y10S55/28

Abstract: The present invention relates to an arrangement for a motor vehicle fuel system. The arrangement comprises a fuel tank, a filler tube connected to the fuel tank and being sealable by a tank cap and a vent line opening into said fuel tank, the vent line being divided into at least two parts, e.g. a lower and an upper vent line. The vent line is connected to a filter means, which is connected to the intake system of the motor. This filter is capable of accumulating and filtering fuel vapors coming from the fuel tank, so that these vapors will not pollute the atmosphere. Instead, the vapors are sucked into the motor and burned when the motor is operating. The arrangement is chiefly characterized in tat the lower vent line, which is connected to the fuel tank, and one end of the upper vent line open into the filler tube at a place adjacent to the tank cap. Further, the end of the lower vent line opening into the filler tube can be sealed by means of a valve operated by the tank cap, the valve being arranged to close when the tank cap is removed and to open when the tank cap is mounted, and further, the upper vent line between the filler tube and the filter reaches, in a previously known way, substantially up to the highest point of the vehicle and constitutes a liquid trap for a gas-liquid mixture destined for the filter means.

Abstract translation: 本发明涉及一种用于机动车辆燃料系统的装置。 该装置包括燃料箱，连接到燃料箱的加油管，并且能够通过罐盖和通向所述燃料箱的通气线密封，所述排气管线被分成至少两部分，例如， 下排和上排气管。 排气管线连接到过滤器装置，其连接到电动机的进气系统。 该过滤器能够积聚和过滤来自燃料箱的燃料蒸气，使得这些蒸汽不会污染大气。 相反，蒸汽被吸入电机并在电机运行时燃烧。 该装置的主要特征在于连接到燃料箱的下排气管线，并且上排气管线的一端在与罐盖相邻的位置处开放到加注管中。 此外，通过由罐盖操作的阀可以密封进入加注管的下排气管路的端部，该阀门被布置成当罐盖被移除时关闭，并且当安装罐盖时打开， 此外，填充管和过滤器之间的上排气管线以先前已知的方式到达车辆的最高点，并构成用于过滤装置的气液混合物的液阱。