You have to add oil to the fuiel of a two-stroke engine.
2006-09-16 15:04:52
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answer #1
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answered by Computer Guy 7
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A 4-stroke engine consumes just petrol or diesel, a 2-stroke engine consumes petrol or diesel with oil mixed with it for engine lubrication, and that oil is burned along with the fuel, unlike the 4-stroke where the oil returns to the sump.
2006-09-16 22:01:29
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answer #2
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answered by Phish 5
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A four stroke engine works on four strokes, hence the name. That would be INTAKE, COMPRESSION, POWER, & EXHAUST. A four stroke engine uses valves & a camshaft. A two stroke engine only uses piston(s) and crankshaft. Each cycle is completed in TWO strokes as opposed to four. There fewer moving parts in a two stroke engine than there is in a four. Therefore, the advantages are lighter weight, more power and more compact. However, they are also noisier, and dirtier, due to the fact that oil (two stroke engine oil, that is) and gasoline are mixed and burned together in a two stroke engine.
2006-09-16 22:04:38
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answer #3
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answered by Anonymous
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in a 2 stroke engine you have 2 mix the oil with the gas to run the engine
2006-09-16 22:00:50
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answer #4
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answered by steve 5
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I am sure you mean FOUR STROKE and TWO STROKE!
The two-stroke cycle of an internal combustion engine differs from the more common four-stroke cycle by having only two strokes (linear movements of the piston) instead of four, although the same four operations (intake, compression, power, exhaust) still occur. Thus, there is a power stroke per piston for every engine revolution, instead of every second revolution. Two-stroke engines can be arranged to start and run in either direction.
The smallest gasoline engines are usually two-strokes. They are commonly used in outboard motors, high-performance, small-capacity motorcycles, mopeds, scooters, snowmobiles, karts, model airplanes (and other model vehicles) and motorized garden appliances like string trimmers, chainsaws and lawnmowers. In each application, they are popular because of their simple design (and therefore, low cost) and very high power-to-weight ratios (because the engine has twice as many combustions per second as a four-stroke engine revolving at the same speed). Two-stroke engines often have a simple lubrication system in which oil is mixed with the fuel, (then known as 'petroil') and therefore reaches all moving parts of the engine. For this reason, for handheld devices, they have the advantage of working in any orientation, as there is no oil reservoir dependent upon gravity. See 'Design Issues' below.
Two-stroke cycles have also been used in diesel engines, notably opposed piston designs, low speed units such as large marine engines, and V8 engines for trucks and heavy machinery
Compared with four-stroke engines
Two-stroke engines have several marked disadvantages that have largely precluded their use in automobiles (although there was some use, such as in historic Saabs and DKWs and until recently in several automobiles produced in the Eastern bloc, including Trabants and Wartburgs, among others) and are reducing their prevalence in the above applications. Firstly, they require much more fuel than a comparably powerful four-stroke engine due to less efficient combustion. The burning oil, and the less efficient combustion, makes their exhaust far smellier and more damaging than a four-stroke engine, thus struggling to meet current emission control laws. They are noisier, partly due to the more penetrating high-frequency buzzing and partly due to the fact that muffling them reduces engine power far more than on a four-stroke engine (high-performance two-stroke engine exhausts are tuned by determining the resonant frequency of the exhaust systems and exploiting it to top-up the fuel air charge just before the cylinder port closes). Finally, they are considered less reliable and durable than four stroke engines.
Two-stroke diesel engines were used in trucks, with a notable example being the 1954 Commer. This engine was the Rootes TS3 (TillingStevens), a horizontal, opposed piston, three-cylinder. The General Motors EMD diesel 2-strokes powered diesel locomotives in the 1930s. These engines had up to 18 cylinders (with a total displacement of approximately 10,000 cubic inches). Typical power output would be 4,300 hp. The Wartsila-Sulzer RTA96-C turbocharged two-stroke diesel engine is the most powerful and most efficient power plant in the world today and is used in ships.
A notable area of use today is in small displacement motorcycles, mostly in off-road "dirt-bikes", and scooters, where their higher power-to-weight ratio, and smaller size outweigh their aforementioned disadvantages.
There are more elaborate possible two-stroke engine configurations, but these often have enough complications that they do not outperform comparable four-stroke engines. New two-stroke designs rely on electronically-controlled fuel injection, oil injection and other design improvements to reduce pollution and increase fuel efficiency. However, such systems increase the cost of the engines to the point that for small systems simple four-stroke engines are most cost-effective. Many large manufacturers, including Ford and Honda are still actively researching ways to build practical and clean two strokes for automotive use.
2006-09-16 22:17:27
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answer #5
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answered by Anonymous
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2 stroke has more power 4 stroke doesnt 2 strokes sometimes use a oil to gas mix 4 strokes have a oil pan and uses a oil pump to get oil to the cylinders.
2006-09-16 22:00:05
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answer #6
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answered by hackstudio 4
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i think you mean a four stroke engine. you burn straight gasoline in a four stroke engine and an oil mix in a two stroke.
2006-09-16 22:00:57
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answer #7
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answered by natallbad 4
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not alot now as they both run on unleaded 95 octain
2006-09-17 01:41:31
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answer #8
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answered by witheringtonkeith 5
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who gives a sh1t........ just use it and when it breaks down, get another thing.. worry about more important things my friend like why people are killing each other........ wake up friend... get real
2006-09-20 10:33:31
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answer #9
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answered by amibothered111 1
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four stroke has more power and two stroke has less power.
2006-09-18 03:19:13
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answer #10
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answered by Anonymous
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