EXHAUST GAS RECIRCULATION SYSTEM WITH CONTROL OF EGR GAS TEMPERATURE

Title:

EXHAUST GAS RECIRCULATION SYSTEM WITH CONTROL OF EGR GAS TEMPERATURE

Document Type and Number:

WIPO Patent Application WO2006058339

Kind Code:

A3

Abstract:

A method and system for controlling the temperature of recirculated exhaust gas in an exhaust gas recirculation (EGR) system, such as those used in connection with diesel engines. An EGR loop (which may be either a high pressure loop or a low pressure loop) has a dual-leg segment with an EGR cooler on one leg and an EGR heater on the other leg. By means of a valve, the EGR gas may be diverted to either one leg or the other, thereby providing either cooled or heated EGR gas to the engine.

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WO/1993/024749	METHOD AND APPARATUS TO REDUCE ENGINE COMBUSTION NOISE UTILIZING UNIT VALVE ACTUATION

Inventors:

KHAIR MAGDI K (US)
HUANG YIQUN (US)
SHARP CHRISTOPHER A (US)
WEBB CYNTHIA C (US)

Application Number:

PCT/US2005/043211

Publication Date:

October 19, 2006

Filing Date:

November 29, 2005

Export Citation:

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Assignee:

SOUTHWEST RES INST (US)
KHAIR MAGDI K (US)
HUANG YIQUN (US)
SHARP CHRISTOPHER A (US)
WEBB CYNTHIA C (US)

International Classes:

F02M25/07; F02B33/44; F02B47/08

Foreign References:

US6367256B1	2002-04-09
US6826903B2	2004-12-07
US5617726A	1997-04-08
US6742506B1	2004-06-01
US6138649A	2000-10-31

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