Charging-pressure-guided control method for an internal combustion engine

摘要

A method of controlling a charging pressure of an internal combustion engine having a particle filter for the treatment of exhaust gases, wherein the charging pressure is controlled to achieve a nominal charging pressure value and wherein the nominal charging pressure value is set as a function of operating parameters, wherein there is determined a first value for a charging pressure minimizing a fuel consumption, taking into account a direct influence of the charging pressure on the fuel consumption of an internal combustion engine; as well as an internal combustion engine having a particle filter for the treatment of exhaust gases, using such a control method.

主权项

1. A method of controlling a charging pressure for an internal combustion engine having at least one of a particle filter and a nitrogen oxide catalyst for the treatment of exhaust gases, the method comprising:
setting a nominal charging pressure of the internal engine as a function of operating parameters of the internal combustion engine; controlling the charging pressure of the internal combustion engine to achieve a nominal charging pressure value; determining a first value for the charging pressure that minimizes fuel consumption of the internal combustion engine by taking into account a direct influence of the charging pressure on the fuel consumption of the internal combustion engine; determining a second value for the charging pressure that minimizes the fuel consumption of the internal combustion engine by taking into account an indirect influence of the charging pressure on an interval-determined regeneration of the at least one particle filter and nitrogen oxide catalyst for the treatment of exhaust gases; and setting an optimized nominal charging pressure value by taking into account the first value for the charging pressure and the second value for the charging pressure.