发明申请
US20160265485A1 DUAL PATH COOLED EXHAUST GAS RECIRCULATION FOR TURBOCHARGED GASOLINE ENGINES
审中-公开
涡轮机汽油发动机双路冷却排气回收
- 专利标题: DUAL PATH COOLED EXHAUST GAS RECIRCULATION FOR TURBOCHARGED GASOLINE ENGINES
- 专利标题(中): 涡轮机汽油发动机双路冷却排气回收
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申请号: US15062668申请日: 2016-03-07
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公开(公告)号: US20160265485A1公开(公告)日: 2016-09-15
- 发明人: Nicolas Massard , Alan G. Falkowski , Thomas G. Lawrence , Massimo Fulfaro
- 申请人: Nicolas Massard , Alan G. Falkowski , Thomas G. Lawrence , Massimo Fulfaro
- 主分类号: F02M26/06
- IPC分类号: F02M26/06 ; F02D9/08 ; F02M26/38 ; F02M26/21 ; F02M26/22
摘要:
A dual path exhaust gas recirculation (EGR) system for an engine includes a common EGR intake path and first and second low pressure EGR paths including respective first and second EGR valves. The common EGR intake path is connected to the exhaust system downstream of a catalyst and includes an EGR cooler. The first EGR path is coupled directly to the EGR cooler and an inlet of a turbocompressor. The second EGR path is coupled directly to the EGR cooler and the intake system, thereby bypassing the turbocharger and an engine throttle valve. The engine includes an absence of any high pressure EGR path and the EGR valves are controlled such that the first EGR valve is closed and the second EGR valve is open at low engine speed and load operating conditions thereby providing EGR directly to the intake system that bypasses the turbocharger and throttle valve.
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