Patent ID: 7520273
Filing Date: 2009-04-21
Classification: F02B,F02M,Y02T

Abstract:
1. A method for recirculating exhaust cias, the method which comprises: providing an internal combustion engine operating with a partial homogeniztion of a combustion; providing an air-supply line connected to an air inlet of the internal combustion engine and an exhaust-gas line connected to an exhaust-gas outlet of the internal combustion engine; providing a turbine disposed in the exhaust-gas line such that the turbine drives a compressor disposed in the air-supply line; connecting the exhaust-gas line to the air-supply line via an exhaust-gas recirculation line of a low-pressure exhaust-cias recirculation device, the exhaust-gas recirculation line branching off from the exhaust-gas line in flow direction behind the turbine such that during operation of the internal combustion engine the exhaust-gas recirculation line is open in a low-load range of the internal combustion engine as well as in a full-load range of the internal combustion engine allowing exhaust-gas to flow from the exhaust-gas outlet back to the air inlet via the exhaust-gas recirculation line; and providing an exhaust-gas recirculation rate between 30 and 70% in a rotational speed range of the internal combustion engine between 900 and 3,500 1/mm and a mean pressure in a cylinder of the internal combustion engine between 6 and 12 bar.