Patent ID: 7174250
Filing Date: 2007-02-06
Classification: F01P,F02B,F02D,F02M,Y02T

Abstract:
1. A method for determining exhaust gas recirculation quantity for an internal combustion engine having exhaust gas recirculation wherein: the exhaust gas recirculation quantity is determined based on at least one of an exhaust gas temperature, a fresh gas temperature, a fresh gas quantity, and a volumetric efficiency; the fresh gas temperature is determined using a fresh gas temperature model that is adaptively adjusted in response to influencing parameters relevant to the fresh gas temperature; at least one model for determining the variables fresh gas temperature, exhaust gas temperature, or volumetric efficiency comprises a basic model which is used to determine a basic value, and a correction model, which generates an output value that is used to correct the basic value when the values of variables relevant to the variable to be determined deviate from reference values of these variables.