Exhaust gas recirculation cooler

An exhaust gas recirculation assembly for an engine is disclosed in which an EGR cooler and a bypass passage are combined in a single housing. Two EGR valves are used to control exhaust gas flow through the EGR cooler and the bypass passage respectively. By using two EGR valves, the disclosure obvia...

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Bibliographische Detailangaben
1. Verfasser:	EWEN KENNETH ALFRED
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	An exhaust gas recirculation assembly for an engine is disclosed in which an EGR cooler and a bypass passage are combined in a single housing. Two EGR valves are used to control exhaust gas flow through the EGR cooler and the bypass passage respectively. By using two EGR valves, the disclosure obviates bypass baffles or flaps which can suffer from leakage problems. The arrangement of the EGR valves permits the use of un-cooled EGR valves and the EGR valves can be used to control not only the flow of exhaust gas through the EGR cooler or bypass passage, but also the EGR flow for the engine.