SPARK IGNITION ENGINE AND METHOD OF CONTROLLING COMBUSTION OF THE ENGINE

摘要

A spark ignition engine and a method of controlling the combustion of the engine, wherein the occurrence of heat in a combustion chamber is retarded by setting an ignition timing at a time immediately before a top dead center or thereafter in a compression stroke in a warmingup when the temperature of the engine is low to exhaust the large amount of unburnt HC and oxygen and exhaust emission (exhaust gases) containing carbon monoxide to an exhaust passage, and a turbulent flow generating means for producing disturbance in exhaust flow is installed in the exhaust passage to promote the mixing of the HC and oxygen and carbon monoxide, whereby the HC can be burned in the exhaust passage to increase an exhaust emission temperature and effectively reduce the volume thereof, and since the temperature of exhaust emission is increased, a catalytic converter for exhaust emission control can be prematurely activated.