the secondary power cylinder 303 are designed to forced the compressed cool air to blow onto the inner surface of the engine head in the respective power cylinders the compress ratio of the cooling cylinder 302 is unlimited thereby the compressed cool air in the cooling cylinder 302 is completely compressed into the primary power cylinder 301 and the secondary power cylinder 303 at the end of the first compression stroke and the second compression stroke respectively referring now to fig1 and fig4 to fig1 first stroke is the intake stroke of the primary power cylinder 301 the primary power cylinder 301 is supplied with air fuel mixture operating from 0 degree to 180 degree of crankshaft angle second stroke is the first intake stroke of the cooling cylinder 302 the cooling cylinder 302 is supplied with air only from the compressor of the turbo operating from 90 degree to 270 degree of crankshaft angle third stroke is the compression stroke of the primary power cylinder 301 the air fuel mixture inside the primary power cylinder 301 is compressed and ignited at designed crankshaft angle operating from 180 degree to 360 degree of crankshaft angle fourth stroke is the first compression stroke of the cooling cylinder 302 the cool air inside the cooling cylinder 302 is compressed from 270 degree to 450 degree of crankshaft angle whereby the primary coordinating port 307 is open from approximately 420 degree to 450 degree of crankshaft angle allowing passage of the compressed cool air into the primary power cylinder 301 the compressed cool air is blown.