- 专利标题: Exhaust gas recirculation control apparatus for an internal combustion engine
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申请号: US605669申请日: 1996-02-22
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公开(公告)号: US5632258A公开(公告)日: 1997-05-27
- 发明人: Kunihiro Tsuzuki , Hiroo Tsujimoto , Yukihiko Takeuchi , Shiro Maeda
- 申请人: Kunihiro Tsuzuki , Hiroo Tsujimoto , Yukihiko Takeuchi , Shiro Maeda
- 申请人地址: JPX Kariya
- 专利权人: Nippondenso Co., Ltd.
- 当前专利权人: Nippondenso Co., Ltd.
- 当前专利权人地址: JPX Kariya
- 优先权: JPX7-039834 19950228; JPX7-120069 19950518; JPX7-293157 19951110
- 主分类号: F02D21/08
- IPC分类号: F02D21/08 ; F02M25/07
摘要:
According to the present invention, the exhaust gas recirculation control apparatus includes a first switching valve for controlling communication between the positive pressure supplying source and the control valve. The first switching valve opens only when the control means increases and maintains the predetermined pressure supplied to the EGR valve, and under other conditions, the first switching valve closes, so that the positive pressure of the positive pressure supplying source can be utilized only when needed and the positive pressure accumulated inside the positive pressure supplying source can be prevented from leaking from the control valve. When an air compressor, which is mounted for a braking in a vehicle, is commonly used for the EGR valve as the positive pressure supplying source, air pressure of the brake system in the air compressor can be effectively used, a small-sized EGR apparatus being thereby manufactured.
公开/授权文献
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