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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]
The D-400 series engine or the Iron Horse engine was a light-duty two-stroke engine used for powering lawnmowers produced from the 1950s to the late 1970s. D-400 engines were single-cylinder engines designed and manufactured by the Outboard Marine Corporation (OMC; Johnson and Evinrude) for Lawn-Boy [2] and Masport. The D-400 engines displaced ...
Data from Cuyuna & McCornack General characteristics Type: Direct drive two-stroke piston aircraft engine Bore: 2.658 in (68 mm) Stroke: 2.362 in (60 mm) Displacement: 428 cc (26.11 cubic inches) Dry weight: 65 lb (29 kg) Designer: McCornack/Cuyuna Components Fuel type: Regular auto fuel Oil system: 40:1 premixed fuel and oil Cooling system: fan forced air Performance Power output: 30 hp (22 ...
The second type of Saab two stroke engine was a longitudinally placed inline-three cylinder of 748 cc (45.6 cu in) and initially 33 hp (25 kW). It was used in the Saabs 93, 94 (Sonett I, with an engine tuned to 57.5 hp (42.9 kW)), Saab Sonett II, 95, 96, Saab Granturismo, the Saab Formula Junior and the Saab Quantum.
The bulbous shape of the exhaust of the Cornet and Boss is an anti-noise two-stroke TWN feature. All TWN motorcycle production ceased in 1957. In 1953 TWN showed the model Duplex at a fair. This 250 cm 3 engine was a 2-cylinder split-single with 4 pistons. This motorcycle was not produced.
The AE75's design is compact and light at 49 kg (108 lb) and yields a power-to-weight ratio of 1.14 kW/kg. Lubrication is via 40:1 pre-mix two-stroke oil. [2] [3] Each of the engine's three cylinders has its own carburetor, with an alternate air device to provide carburetor heat.
However, with its actual power output of only 6.95 PS (5 kW; 7 hp) and high fuel consumption of 380 g·PS −1 ·h −1 (517 g·kW −1 ·h −1), it did not prove to be successful; [4] Güldner's two-stroke diesel engine project was abandoned in 1901.
A lag of about 85 deg for the peak suction wave versus about 32 deg for the peak pressure wave. A difference of some 53 deg due to the movement of the gas and piston position. The graph above shows the intake runner pressure over 720 crank degrees of an engine with a 7-inch (180 mm) intake port/runner running at 4500 rpm, which is its torque ...