Bypass for exhaust gas cooler

An exhaust gas recirculation cooler (100, 300), typically of the drawn cup design, with a bypass (9, 301) and control valve (6, 342) is disclosed. The control valve (6, 342) can direct a proportion of the exhaust gas to the cooler (80) and a proportion to bypass the cooler depending on the input tem...

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Bibliographische Detailangaben
Hauptverfasser:	REYMONDET, STEPHANE, SMITH, WILLI J, LEMON, ANGUS, SAYERS, JON A
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION HEAT EXCHANGE IN GENERAL HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	An exhaust gas recirculation cooler (100, 300), typically of the drawn cup design, with a bypass (9, 301) and control valve (6, 342) is disclosed. The control valve (6, 342) can direct a proportion of the exhaust gas to the cooler (80) and a proportion to bypass the cooler depending on the input temperature of the exhaust gas and the required temperature of the exhaust gas. The proportion of the exhaust gas directed to the cooler (80)/bypassing the cooler (80) can be varied as required and so the temperature of the exhaust gas can be controlled. One benefit of certain embodiments of the invention is that engine damaging chemicals, such as sulphuric acid, which result from over-cooling the exhaust gas are reduced.