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1. 发明申请

US20080141671A1 EXHAUST GAS RECIRCULATION SYSTEM FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于内燃机的排气回送系统
公开(公告)号：US20080141671A1
公开(公告)日：2008-06-19
申请号：US11950805
申请日：2007-12-05
申请人： Eiji TAKEMOTO
发明人： Eiji TAKEMOTO
IPC分类号： F02B33/44
CPC分类号： F02M26/35 , F01N11/002 , F01N2560/08 , F02B37/00 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , F02M26/25
摘要： A low pressure EGR system includes a low pressure EGR passage connecting a downstream portion of an exhaust gas cleaner disposed in an exhaust passage to an upstream portion of a supercharger compressor disposed in an intake passage. A device for trapping foreign particles contained in EGR gas to be recirculated is disposed in the low pressure EGR passage. The trapping device may be positioned lower than the passage connected thereto so that foreign particles drop into the device by their own weight. A cross-sectional area of the trapping device may be made larger than that of the passage so that the flow speed of the EGR gas is reduced in the trapping device and the foreign particles are easily trapped. A valve for closing the low pressure EGR passage may be disposed therein to stop EGR when malfunctions are detected in the exhaust gas cleaner or the supercharger.
摘要翻译：低压EGR系统包括将布置在排气通道中的排气净化器的下游部分连接到设置在进气通道中的增压压缩机的上游部分的低压EGR通路。用于捕集包含在要再循环的EGR气体中的异物的装置设置在低压EGR通路中。捕集装置可以定位成低于与其连接的通道，使得外来颗粒通过其自身的重量落入装置中。捕集装置的截面积可以大于通道的横截面面积，使得在捕集装置中EGR气体的流速减小，并且外来颗粒容易被捕获。在排气净化器或增压器中检测到故障时，用于关闭低压EGR通道的阀可以设置在其中以便停止EGR。

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