Patent ID: 8306721
Filing Date: 2012-11-06
Classification: B60K,B60L,B60W,F02B,F02D,F02M,Y02T

Abstract:
1. An internal combustion engine system comprising: an internal combustion engine; an exhaust gas recirculation system that includes a valve for regulating a flow rate at which exhaust gas from the internal combustion engine is supplied to an intake system of the internal combustion engine, and that opens the valve to recirculate the exhaust gas to the intake system; an intake air flow rate detecting device that detects an air flow rate at which air is introduced into the internal combustion engine; and a controller that, when fuel injection in the internal combustion engine in operation is stopped, controls the internal combustion engine so that i) the fuel injection is started at a fuel injection flow rate that is obtained by adding a first increasing correction flow rate to a reference fuel injection flow rate that is set so as to give a stoichiometric air-fuel ratio on the basis of the detected air flow rate when the opening degree of the valve is lower than a predetermined opening degree, and controls the internal combustion engine so that ii) the fuel injection is started at a fuel injection flow rate that is obtained by adding a second increasing correction flow rate, which is set to be larger than the first increasing correction flow rate, to the reference fuel injection flow rate when the opening degree of the valve is higher than or equal to the predetermined opening degree.