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2. Compression ratio - Wikipedia

   en.wikipedia.org/wiki/Compression_ratio

   [2] [3] [4] The SkyActiv engine achieves this compression ratio with ordinary unleaded gasoline (95 RON in the United Kingdom) through improved scavenging of exhaust gases (which ensures cylinder temperature is as low as possible before the intake stroke), in addition to direct injection. Toyota Dynamic Force engine has a compression ratio up ...

3. Two-stroke engine - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_engine

   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.

4. Two-stroke power valve system - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_power_valve_system

   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 ...

5. Leak-down tester - Wikipedia

   en.wikipedia.org/wiki/Leak-down_tester

   Compression tests should normally be done with all spark plugs removed to maximize cranking speed. Cranking compression is a dynamic test of the actual low-speed pumping action, where peak cylinder pressure is measured and stored. A compression tester. Leak-down testing is a static test. Leak-down tests cylinder leakage paths.

6. Two-stroke diesel engine - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_diesel_engine

   Nordberg two-stroke radial diesel engine formerly used in a pumping station at Lake Okeechobee. A two-stroke diesel engine is a diesel engine that uses compression ignition in a two-stroke combustion cycle. It was invented by Hugo Güldner in 1899. [1]

7. Compression release - Wikipedia

   en.wikipedia.org/wiki/Compression_release

   The most common kind of small engine compression release uses a camshaft mounted mechanical lever that pushes the exhaust valve tappet slightly, venting engine compression through the exhaust valve. Once the engine spins to starting speed, centrifugal force causes the lever to move out of the way, and the exhaust valve is allowed to seat fully.

8. Wärtsilä-Sulzer RTA96-C - Wikipedia

   en.wikipedia.org/wiki/Wärtsilä-Sulzer_RTA96-C

   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 .

9. Joseph Day (inventor) - Wikipedia

   en.wikipedia.org/wiki/Joseph_Day_(inventor)

   Joseph Day (1855 – 1946) is a little-known [1] English engineer who developed the extremely widely used crankcase-compression two-stroke petrol engine, [1] [2] as used for small engines from lawnmowers to mopeds and small motorcycles.