Control system for compression ratio of engine by exhaust air valve to convert waste heat of engine in kinetic energy, compress air by one part of compression stroke in combustion engine

摘要

The control system compress air by one part of the compression stroke in a combustion engine. One third of the exhaust gas is directed to the cooling water for heating. The engine has double mechanical compression ratio and optimal compression ratio by blowing extra air during the compression stroke through an exhaust air valves (7,10). Independent claims are also included for the following : (1) a production method for additional expansion pressure in the combustion chamber of an engine (2) an optimization method for the partial load in operation of a petrol engine.