Management of combustion engines to give minimal emissions

摘要

A process for managing combustion engines ensures lower gas emissions by returning the exhaust gases given out from the engine (1) through a channel (5) to an inlet pipe (3). A governor-unit (6) controls the return rate (R) of the gas stream, proportionally mixed with fresh air at the inlet, by alignment of the actual value to a predetermined preferred value, using a valve (8) with a variable diameter. Both before and after the junction of the return channel with the inlet pipe the oxygen content of the gas stream is measured. The governor unit determines the immediate return rate from these results. The system ensures minimal exhaust emissions.