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公开(公告)号：EP0840000A1
公开(公告)日：1998-05-06
申请号：EP97118414.8
申请日：1997-10-23
申请人： Isuzu Motors Limited
CPC分类号： F02M26/61 , F02M26/05 , F02M26/10 , F02M26/16 , F02M26/21 , F02M26/28 , F02M26/39 , F02M26/40 , F02M26/50 , F02M26/60 , F02M26/71
摘要： An exhaust gas recirculation apparatus capable of preventing the occurrence of dewing inside an exhaust gas recirculation pipe after the engine stop and corrosion inside the exhaust gas recirculation pipe, an EGR valve, a reed valve, etc., and eventually capable of improving engine durability and engine life. This exhaust gas recirculation apparatus includes
an exhaust gas recirculation pipe having an EGR valve for controlling an exhaust recirculation quantity and connected between an exhaust passage and an intake passage in an internal combustion engine equipped with a supercharger, and a check valve for preventing intake air from flowing into the exhaust gas recirculation pipe when an internal pressure of the exhaust gas recirculation pipe is lower than an internal pressure of the intake passage, disposed at the junction between the exhaust gas recirculation pipe and the intake passage, wherein the check valve has a clearance for communication between the exhaust gas recirculation pipe and the intake passage while the engine stops.摘要翻译： 一种废气再循环装置，其能够防止在排气再循环管，EGR阀，簧片阀等内的发动机停止和腐蚀之后在排气再循环管内发生排气，并且最终能够提高发动机耐久性， 发动机寿命。 该排气再循环装置具有排气再循环管，其具有用于控制排气再循环量并连接在配备有增压器的内燃机中的排气通路与进气通路之间的EGR阀，以及用于防止来自 当废气再循环管的内部压力低于设置在排气再循环管和进气通道之间的接合处的进气通道的内部压力时，流入排气再循环管，其中止回阀具有间隙 用于在发动机停止时废气再循环管和进气通道之间的连通。
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