发明授权
- 专利标题： PUMPVORRICHTUNG
- 专利标题（英）： Pumping device
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申请号： EP96914066.4申请日： 1996-05-10
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公开(公告)号： EP0778921B1公开(公告)日： 2001-04-04
- 发明人: KRIMMER, Erwin , DENZ, Helmut , SCHULZ, Wolfgang , WILD, Ernst , KUHNT, Winfried , SCHWEGLER, Helmut , BLUMENSTOCK, Andreas , MIEHLE, Tilman , ZIMMERMANN, Manfred
- 申请人： ROBERT BOSCH GMBH
- 申请人地址： Postfach 30 02 20 70442 Stuttgart DE
- 专利权人： ROBERT BOSCH GMBH
- 当前专利权人： ROBERT BOSCH GMBH
- 当前专利权人地址： Postfach 30 02 20 70442 Stuttgart DE
- 优先权： DE19523935 19950630
- 国际公布： WO9702421 19970123
- 主分类号： F02M25/08
- IPC分类号： F02M25/08 ; F04B45/047 ; F04B49/24
摘要：
A pumping device (2), in particular for a fuel vapour control system (1) of an internal combustion engine, has a membrane (22) driven by an electromagnet (46) and by a magnetic armature (41). The membrane (22) delimits a feeding chamber (34) with a valve arrangement (24, 25). A first valve (24) can communicate through a supply pipe (29) with ambient air and through a second valve (25) with a feeding pipe (30) provided with an adsorption filter (6). An electromagnetically controlled shut off valve (20) is arranged between the supply pipe (29) and the feeding pipe (30).
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