Invention Grant
- Patent Title: Dual path cooled exhaust gas recirculation for turbocharged gasoline engines
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Application No.: US15062668Application Date: 2016-03-07
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Publication No.: US10094337B2Publication Date: 2018-10-09
- Inventor: Nicolas Massard , Alan G Falkowski , Thomas G Lawrence , Massimo Fulfaro
- Applicant: Nicolas Massard , Alan G Falkowski , Thomas G Lawrence , Massimo Fulfaro
- Applicant Address: US MI Auburn Hills
- Assignee: FCA US LLC
- Current Assignee: FCA US LLC
- Current Assignee Address: US MI Auburn Hills
- Agent Ralph E Smith
- Main IPC: F02B37/00
- IPC: F02B37/00 ; F02D9/08 ; F02M26/06 ; F02M26/07 ; F02M26/22 ; F02M26/35 ; F02M26/38 ; F02M26/44 ; F02M26/21 ; F02M26/20 ; F02M26/00 ; F02D41/00

Abstract:
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.
Public/Granted literature
- US20160265485A1 DUAL PATH COOLED EXHAUST GAS RECIRCULATION FOR TURBOCHARGED GASOLINE ENGINES Public/Granted day:2016-09-15
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