Patent ID: 9309826
Filing Date: 2016-04-12
CPC Classification: F02D,F02M,Y02T

Claim Text:
1. An automated method for determining a modeling value of at least one physical variable at a specific point in an exhaust gas discharge section of an engine system including an internal combustion engine which is supplied with air via an air supply section, the method comprising: operating the engine system to produce an exhaust gas mass flow in the exhaust gas discharge section; determining instantaneous values of other physical variables; and determining the modeling value of the at least one physical variable by solving a differential equation, which results as a discretization of a differential equation, with aid of the previously ascertained instantaneous values of the other physical variables, wherein the at least one physical variable corresponds to at least one of a pressure and an exhaust gas mass flow at a branching point of the exhaust gas discharge section downstream from a turbine of an exhaust-gas-driven turbocharger, wherein (i) a first branch from the branching point leads to a discharge point for the exhaust gas, and (ii) a second branch from the branching point forms a part of an exhaust gas recirculation line connecting the branching point to an intake point of the air supply section.