METHOD FOR ADJUSTING THE AIR-FUEL RATIO IN THE EXHAUST GAS OF A DIRECT INJECTION INTERNAL COMBUSTION ENGINE FOR NOx STORAGE CATALYTIC CONVERTER REGENERATION

摘要

Method for adjusting the air-fuel ratio in the exhaust gas of a direct injection internal combustion engine, wherein the combusting fuel injection is divided into a plurality of individual injections, and wherein the air-fuel ratio in the exhaust gas of the internal combustion engine for a given load (PMI) is predictively adjusted by at least one model, by adjusting the position of the centroid of heat release conversion rates and the injection amount of the total combusting fuel injection, to a value that is necessary for the regeneration of an NOx storage catalytic converter in the exhaust system of the internal combustion engine.

主权项

1. A method for adjusting the air-fuel ratio in the exhaust gas of a direct injection internal combustion engine, comprising:
dividing, by an electronic control unit, combusting fuel injection into a plurality of individual injections; and predictively adjusting, by the electronic control unit, an air-fuel ratio in the exhaust gas of the internal combustion engine for a given load to a value that is necessary for regeneration of an NOx storage catalytic converter in the exhaust system of the internal combustion engine by adjusting a position of a centroid of heat release conversion rates and an injection amount of a total combusting fuel injection using at least one model.