An amount of air taken into an air leading type two-stroke engine is increased to enhance an engine output, and gas emission characteristic deterioration caused by blow-back is inhibited. An inhibition member 16 is disposed between a choke valve 4 in a ful...

The certainty of supplying air to a scavenging channel through a piston groove is improved. In a cylinder wall 2 , a gas venting port 10 is formed below and adjacent to a scavenging port 6a . The gas venting port 10 is independent from the scavenging port ...

A scavenging port 24 is composed of a main port portion 28 directly ranging to a scavenging passage 22 and a port extension 30 extending from the main port portion 28 in the lateral direction. The port extension 30 extends to the opposite side of an exhaus...

The engine has a cylinder (10) provided with a combustion chamber (14). An exhaust unit (22) is provided with an exhaust manifold (24) that is controlled by an exhaust valve (26). An air inlet channel (32) allows the flow of supercharged air through into t...

A scavenging passage structure for a two-stroke engine, having a scavenging passage communicating a scavenging port provided in a cylinder with a crank chamber formed inside a crankcase, the scavenging passage being formed to extend through respective fast...

A two-stroke internal combustion engine (1), comprising a carburettor which supplies a base, a transfer conduit which opens into a cylinder through an air/fuel inlet port (24), and a fuel storage system which communicates with a first port (15) located abo...

The method involves regulating opening/closing of exhaust valve at crank angle during exhaust phase operation of a diesel type engine. The opening/closing sequence of exhaust valve starts after the start of exhaust phase where the piston sets in bottom dea...

A two-stroke internal combustion engine, in particular for portable tools such as power saws, bush cutters, etc., comprising a bed (2) in which for the reciprocating piston (8) at least one chamber (44) is provided to which the mixture inlet port (20) and ...

Two-stroke diesel engine (1) with longitudinal scavenging comprises at least one cylinder (2) in which a piston (3) is movably arranged and having an outlet valve (5) for removing combustion gases and several scavenging air openings (21) bringing scavengin...