Patent ID: 9574524
Date: 2017-02-21
CPC Classifications: F01N,F02B,F02D,F02M,Y02T,Y10T

Claim:
1. An internal combustion engine system for propelling a vehicle comprising: an internal combustion engine having a gas intake side and an exhaust gas outlet side, an exhaust gas aftertreatment system which is connected to the exhaust gas outlet side of the internal combustion engine by means of an exhaust gas duct, a connection duct connecting the exhaust gas outlet side of the internal combustion engine and the gas intake side of the internal combustion engine, wherein the connection duct is arranged to provide gas recirculation of exhaust gas to the gas intake side of the internal combustion engine, at least one valve controlling the recirculation of the exhaust gas, at least one controller arranged to control the at least one valve to open the at least one valve and/or to close the at least one valve depending on the sensed temperature only in case the internal combustion engine is in the idle or motoring engine operation mode, thereby providing an exhaust gas recirculation through the connection duct to the gas intake side of the internal combustion engine only in case the internal combustion engine is determined to be in an idle or motoring engine operation mode, so that the temperature of the gas at the gas intake side of the internal combustion engine is controlled to be within a predetermined temperature range.