Patent ID: 7617679
Filing Date: 2009-11-17
Classification: F02B,F02M,Y02T

Abstract:
1. An exhaust gases cooler of a supercharged combustion engine fed by compressed air led from an outside inlet line to the supercharged combustion engine, the compressed air having a first temperature and the exhaust gases cooler being operable to cool exhaust gases by means of a first coolant cooled by an engine coolant radiator that cools engine coolant and by means of a second coolant cooled by a secondary radiator positioned apart from the engine coolant radiator, the exhaust gases cooler comprising: a first EGR cooler operable, as a first cooling step, to cool the exhaust gases by means of the first coolant; and a second cooling system comprising a second EGR cooler operable, as a second cooling step, to cool the exhaust gases by means of the second coolant, the second cooling system being operable to cool the second coolant to cool the exhaust gases to a second temperature, the second temperature being substantially the same as the first temperature of the compressed air led to the supercharged combustion engine.