Method for injecting fuel into the combustion chambers of an air-compressing, self-igniting internal combustion engine

摘要

A method and apparatus for injecting fuel into combustion chambers of an internal combustion engine, in which the total injection quantity for the engine is split into a main injection quantity and a small postinjection quantity, the latter being closely coupled to the end of the main injection quantity and being injected with the same fuel pressure as the main injection quantity. This reduces soot emissions at otherwise identical engine operating parameters. Because of the interaction among soot emissions, NOx emissions and specific consumption, the postinjection, while soot and NOx emissions are kept the same, can also be employed to lower the specific consumption of the engine.