2 STROKE ENGINE WITH FUEL INJECTION, ROCKING PORTS AND SEPARATE CHAMBER FOR PRE- COMPRESSION OF INLET AIRSTROKE IC ENGINE WITH ROCKING PORTS AND ANNULAR CHAMBER FOR PRE-COMPRESSION OF INLET AIR

摘要

The invention relates to a modified 2 Stroke IC engine with reciprocating slider valves to control inlet and exhaust ports, which are actuated by cams on crank shaft. The engine has rotary vane compressor to compress inlet air. The modified engine has fuel injector. The sequencing of operation is (i) exhaust port is opened to let out products of combustion (ii) then inlet port is open to let in fresh air alone (without fuel) to scavenge exhaust gases while exhaust port remains open (iii) then exhaust port is closed and inlet port remains open to continue airflow while fuel injection takes place. Then compression, ignition and combustion take place. The cycle continues. The modified 2 stroke IC engine works with least emission of pollutants, splash lubrication to avoid lub oil burning and better fuel efficiency.