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Two-stroke engines often have a higher power-to-weight ratio than a four-stroke engine, since their power stroke occurs twice as often. Two-stroke engines can also have fewer moving parts, and thus be cheaper to manufacture and weigh less. In countries and regions with stringent emissions regulation, two-stroke engines have been phased out in ...
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 four-stroke engine is more efficient when running at full throttle, while the opposite is the case for the two-stroke engine. When a small car under heavy load runs at half speed, the engine automatically switches to the two-cycle mode, which is then more efficient. The research on this showed a 27% reduction in fuel consumption. [8] [9]
Engine construction was not allowed until 1947 but engines of the British Army on the Rhine were repaired and orders came from occupying forces. Many motorcycle manufacturers opted for ILO. In 1954, 1,500 people produced 184,000 units - making ILO the largest manufacturer of two-stroke engines in Germany. In 1957 Moped used ILO piano engines.
The only moving parts inside simple two-stroke engines are the crankshaft, the connecting rod, and the piston. It is the same simplicity in design, however, that causes a two-stroke engine to be less fuel-efficient and produce high specific levels of undesirable exhaust gas emissions. At the bottom of the power stroke, the transfer ports, which ...
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The Wärtsilä RT-flex96C is a two-stroke turbocharged low-speed diesel engine designed by the Finnish manufacturer Wärtsilä. It is designed for large container ships that run on heavy fuel oil . Its largest 14-cylinder version is 13.5 meters high, 26.59 meters long, weighs over 2,300 tonnes , and produces 80.08 megawatts .
Data from Instruction and Maintenance Manual MZ 202 General characteristics Type: Twin-cylinder, two-stroke aircraft engine Bore: 76 mm (2.99 in) Stroke: 69 mm (2.72 in) Displacement: 626 cc (38.20 cu in) Length: 313.5 mm (12.34 in) Width: 299.4 mm (11.79 in) Height: 331.1 mm (13.04 in) Dry weight: 38 kg (84 lb) with starter motor, two carburettors, fuel pump, cooling system and exhaust system ...