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Unlike a four-stroke engine, the crankcase of which is closed except for its ventilation system, a two-stroke engine uses the crankcase as part of the induction tract, so oil must be mixed with gasoline to be distributed throughout the engine for lubrication. [1] The resultant mix is referred to as premix or petroil. [2]
Animation of a two-stroke engine. A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle.
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The 2si 460 is a family of in-line twin-cylinder, two-stroke, single ignition, aircraft engines that were designed for ultralight aircraft. [1]The basic engine was originally designed and produced by ILO-Motorenwerke of Germany and was later acquired by the AMW Cuyuna Engine Company of Beaufort, South Carolina and marketed under the Cuyuna brand name.
The "Pure Enduro" series of off-road racing motorcycles ran from 1977 through to 1984 in engine displacements from 175cc through 400cc. All engines were case-reed valve, air-cooled, two-stroke and single-cylinder with plain steel bores. Lubrication was provided via 20:1 pre-mix.
A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...
Circa-1960 Saab two-stroke engine 2010 Suzuki K10B engine. Among the first cars to use a straight-three engine is the 1953–1955 DKW F91, powered by a 900 cc (55 cu in) two-stroke engine, although this was predated by the 3 cylinder 15hp Rolls Royce produced in 1905 and a number of other cars of this era also used 3 cylinder engines.
Yamaha RS-100T Torque induction series, also known as RS-100 series, is a series of two-stroke motorcycle models manufactured by Yamaha Motors Co. Ltd as a successor of the Philippines' most popular 2T motorcycle/tricycle model. It debuted in 1977 especially for the Asian market (although it is identical with the original design of the RS-100 ...