公开(公告)号：US20060150722A1

公开(公告)日：2006-07-13

申请号：US11324582

申请日：2006-01-04

申请人： Yasuo Kato ,  Masao Kano ,  Yasunori Kobayashi ,  Shisuke Takakura

发明人： Yasuo Kato ,  Masao Kano ,  Yasunori Kobayashi ,  Shisuke Takakura

IPC分类号： G01M19/00

CPC分类号： F02M25/089 ,  F02M25/0836

摘要： An evaporated fuel leak detector detects leakage of an evaporated fuel generated in a fuel tank. The detector includes: a differential pressure valve, a pump for sucking a detection port side to reduce pressure on a fuel tank side, and pressure detection means for detecting pressure on a detection port side. The valve includes a detection port connecting to a fuel tank side, an atmosphere port opened to atmosphere, a pressure chamber and a valve member displaceable in accordance with differential pressure between the detection port and the pressure chamber for connecting and disconnecting a connection between the detection port and the atmosphere port. The valve member disconnects between the detection port and the atmosphere port in a case where pressure of the pressure chamber becomes larger than pressure of the detection port by a predetermined pressure.

摘要翻译： 蒸发的燃料泄漏检测器检测在燃料箱中产生的蒸发燃料的泄漏。 检测器包括：差压阀，用于吸入检测口侧以减少燃料箱侧的压力的泵以及用于检测检测口侧的压力的压力检测单元。 阀包括连接到燃料箱侧的检测口，向大气开放的气氛口，压力室和阀构件，其可根据检测口和压力室之间的压差而移动，用于连接和断开检测之间的连接 港口和大气港口。 在压力室的压力变得大于检测口的压力预定压力的情况下，阀构件在检测口与大气口之间断开。