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Because 2-strokes fire on every turn of the crankshaft while 4-strokes fire on ever 2nd turn of the crank.
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∙ 10y ago
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Why do most very large engines operate on two stroke cycle?
very large is the keyword here. for a very large engines that runs large machines, we need high power engines. two-strike cycle engines produce more power than 4-stroke cycle engines. that's why they are used. as they produce more pollution than 4-strokes, they must be limited to small spaced engines machines or large machines that required very high power.
Four-stroke cycle engines are more fuel efficient than two-stroke engines?
Unless we are talking about big diesels - Yes.
Why do most very small engines operate on a two-stroke cycle?
two-stroke engines can produce more power than four-stroke engines that have the same size. they can occupy small spaces and produce the desired power. they are on the other hand produce more pollution than 4-stroke engines. that's why they are limited or suitable for small engine spaced machines
Why 2 stroke diesel engines are not used in two wheelers?
Two stroke engines will create a lot of visible smoke pollution and also more noise than four stroke engines. For these reason, many countries have required that all new motorcycles should be four-stroke.
Why is a 2 stroke diesel engine used for marine propulsion engines rather than 4 stroke engines?
because iring nag gakos ( cats are embracing)
Which supplies more power a 4 stroke engine or 2 stroke engine?
2-stroke engines produce much more power than 4-stroke.
Why you prefer four stroke engine over two stroke engine?
Four stroke engines are quieter than two strokes, but have less power.
Why do most very small engines operate on 2 stroke?
Most small engines are two stroke because you can get more power from a smaller engine with two stroke rather than a four stroke engine. It takes less to cool and to operate the engine.
Why do diesel engines have more torque than gas engines?
Engines with longer piston stroke, higher turbo boost pressures, and diesel fuel has more energy in it than gasoline.
How to Choose an Outboard Motor?
Instead of buying a new boat, the best alternative may be simply purchasing a new motor. For those that have fishing boats and other working craft, he or she probably has an outboard motor, which are popular on these particular vessels. Outboard motors can be found in a number of places although it is best to purchase one from an authorized dealer or someone that is trustworthy. The reason for this is that simply outboard motors require special knowledge of engine parts to repair and refurbish. If the proper care and time is not taken for the repair, the motor could fail at the most inopportune time.Four Stroke EnginesThe most popular outboard engines of the present are the quiet and reliable four-stroke engines. These engines have recently made their debut over the last ten years because of their ease of use. Four-stroke engines do not use oil as two-stroke engines do, and they also use less gas than two-stroke engines. Also, the four-stroke engine is much quieter than the noisy two-stroke engine, which makes it far less intrusive for those long trips to the Gulf Stream. The only down-side to four-stroke engines are that they are more expensive than two-stroke engines. Four-stroke engines are also considered safer to purchase from classified advertisements or other places. Four-stroke engines do not require specialized repair personnel for general maintenance and small repairs. A 150 horsepower engine can be found for prices starting at $5000.Two Stroke EnginesTwo-stroke engines are the most traditionally used outboard motor on the market. They incorporate the use of oil in their gas tanks and are said to be able to attain more overall torque than four-stroke engines. Two stroke engines are great engines and can be found re-built for relatively cheap. For instance, $500 will get one a two-stroke outboard motor up to fifty horsepower. The best place to look for two-stroke outdoor motors are at authorized used boat dealers or licensed small engine repair shops. Two-stroke engines are different from other engines and takes one with specialized knowledge to make even the most general repairs.
Two stroke engines pollute the air more than four stroke engines?
Yes, two stroke (or Two cycle) engines have oil that is mixed into the fuel to lubricate the motor's moving parts. Where as, in a 4 stroke engine the oil is separate from the fuel. When the fuel oil mix is burned in a two cycle engine more pollution is given off.
2 stroke vs 4 stroke?
On a 2 stroke engine, each cylinder fires every time the piston comes up. On a 4 stroke engine, the cylinder only fires every OTHER time the piston comes up. 4 stroke engines have 4 strokes: Intake, compression, power, and exhaust. 2 stroke engines complete these cycles in only two strokes of the piston by use of ports in the cylinder walls. 2 stroke engines usually produce more power for a given weight/size. But, in gasoline engines, 2 stroke engines are typically less efficient (use more gas) and have much higher pollution levels (note: some newer "direct injection" 2 stroke engines do much better on pollution levels than the typical 2 stroke)
