Evaporated fuel treatment device
    2.
    发明授权
    Evaporated fuel treatment device 有权
    蒸发燃料处理装置

    公开(公告)号:US06564779B2

    公开(公告)日:2003-05-20

    申请号:US09792943

    申请日:2001-02-26

    IPC分类号: F02M2508

    CPC分类号: F02M25/089

    摘要: An evaporated fuel treatment device in which performance of a canister can be improved, with the result that efficiency in treatment of evaporated fuel can be enhanced. In the evaporated fuel treatment device, a purge control valve, conventionally disposed on a purge passage, is removed, such that the canister is directly subject to a negative pressure generated on the side of an inlet pipe at the time of starting of an engine. Consequently, a great attraction force acts on the evaporated fuel adsorbed within the canister. Also, by restricting a flow of air introduced into the canister by means of a flow control valve, the negative pressure applied to the canister can further be increased. As a result, in the evaporated fuel treatment device of the invention, the amount of the evaporated fuel which can be desorbed from the canister is larger than that of a conventional device.

    摘要翻译: 可以提高罐的性能的蒸发燃料处理装置,结果可以提高蒸发燃料的处理效率。 在蒸发燃料处理装置中,通常设置在净化通道上的清洗控制阀被去除,使得在发动机启动时,罐直接受到在入口管侧产生的负压。 因此,很大的吸引力作用于吸附在罐内的蒸发燃料。 此外,通过限制通过流量控制阀引入到罐中的空气的流动,可以进一步增加施加到罐的负压。 结果,在本发明的蒸发燃料处理装置中,能够从罐解吸的蒸发燃料的量大于常规装置的量。