公开(公告)号：US3823556A

公开(公告)日：1974-07-16

申请号：US38504373

申请日：1973-08-02

申请人： TOYOTA MOTOR CO LTD

发明人： GOTO K ,  MIZUNO K

IPC分类号： F01N3/20 ,  F01N3/30 ,  F01N3/14 ,  F02B75/10

CPC分类号： F01N3/2053 ,  F01N3/30 ,  F01N2390/04 ,  Y02T10/20 ,  Y10T137/2663 ,  Y10T137/86895

摘要： This invention relates to a change-over valve assembly for a gas passageway. Said valve assembly comprises a pair of openings formed in a valve casing in positions symmetrical with each other for selectively causing a gas inlet duct to communicate with one of two gas outlet ducts, a plurality of valve bodies firmly secured to opposite ends of a stem so that each may open and close one of said pair of openings, two diaphragm means disposed near opposite sides of the valve casing in positions symmetrical with each other and each comprising a diaphragm and having one of said valve bodies firmly secured to a middle portion of the respective diaphragm, a two-way valve adapted to cause two diaphragm chambers of said two diaphragm means to communicate with a negative pressure source and a positive pressure source respectively, and a plurality of enlarged gas passage portions each formed between one of said pair of openings and the diaphragm of each said diaphragm means. Said plurality of valve bodies are spaced apart from each other a distance greater than the distance between said pair of openings. Said two diaphragm chambers each is defined by an outer cover of the valve casing and the respective diaphragm.

摘要翻译： 本发明涉及一种用于气体通道的转换阀组件。

公开(公告)号：US3097074A

公开(公告)日：1963-07-09

申请号：US6756960

申请日：1960-11-07

申请人： GEN MOTORS CORP

发明人： JOHNSON RALPH S

IPC分类号： F01N3/20

CPC分类号： F01N3/2053 ,  F01N2390/04