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Is the piston on a 4 stroke bigger than stroke 2?
Neither a four stroke nor a two stroke have a bigger piston. It all depends on the size of the engine and how it is built. A 250 four stroke will have the same sized piston that a 250 two stroke would if the bore size is the same. Cc is calculated by bore x stroke (how far up and down the piston moves) so if a 250 four stroke has a stroke of 3.00 inches and a 250 2 stroke has a stroke of 3.00 the piston will be the same size. The only difference between a 2 stroke and four stroke is how the engine works. A 2 stroke has reed valves and it makes power every time the piston goes up but a four stroke it makes power every 4 times the piston goes up.
Are in four stroke engine cylinder move four times in a cycle?
A four stroke engine produces power every other revolution. The term stroke refers to a directional change of the movement of the piston. Taking this into account, the piston moves twice downward and twice upward every time the engine produces power 2 + 2 = 4
Why two stroke engine called by this name?
on 2 stroke engines the cylinder fires everytime the piston comes up. on 4 stroke engines the cylinder fires every other time the piston comes up http://videos.howstuffworks.com/user/4729-two-stroke-cycle-engine-video.htm
Why initial pickup is better in two stroke engine as compare to four stroke engine?
The two stroke has more initial pickup because combustion happens every time the piston is at or near the top dead center. In the four stroke, combustion happens every other time the piston is at or near top dead center. <><><><><> Since the combustion cycle occurs every rotation, instead of every other rotation, there is twice as much torque available to the engine output.
Is there any 3 stroke engine?
No. How could there be? The "stroke" of an engine is the piston going up or down. If the spark plug fires and piston goes down, then up,and then fires again, then it's a two-stroke engine. IN a 4-stroke engine, the spark plug fires, piston does down, then up to exhaust the cylinder, then down to suck in fresh air and cool the cylinder, and up again to compress, and the spark plug fires every other "up". How could you have a "three-stroke" engine? The spark plug fires and the explosion pushes the piston down, and the crankshaft pushes it back up. Then back down. If the spark plug fires while the piston is DOWN, the engine will seize up. Nope. In a piston engine, the number of "strokes" is always an even number. For radial or Wankel engines, things are different - but in those there is no piston, and no "stroke".
Why do 2 cycle engines run hotter than 4 cycle?
A two stroke engine fires (an explosion in the motor) twice as often as a four stroke. A stroke is every time the piston in the engine changes direction. (From up to down) A two stroke engine fires every time the piston comes to the top where a four stroke will fire every other time. So if two single cylinder engines are running at 1,000 RPMs a two stroke will fire 1,000 times a four stroke will fire only 500 times. With twice as many explosions it will be hotter.
Why deflected shape of piston in 2 stroke engine?
Well, isn't that just a happy little question! The deflected shape of the piston in a 2-stroke engine is designed to help optimize the combustion process. By carefully shaping the piston, engineers can ensure efficient fuel intake, compression, and exhaust, all working together in harmony like a beautiful painting coming to life. Just like adding a touch of color to a canvas, every detail in the design of the piston serves a purpose to create a masterpiece of an engine.
How many times does a piston goes up and down to complete the 4-stroke cycle?
In a 4-stroke engine, the piston goes up and down twice to complete one full cycle. This means the piston moves up once during the compression stroke and again during the exhaust stroke, while moving down during the intake and power strokes. Thus, for every complete 4-stroke cycle, the piston makes two complete movements (up and down).
What does bore and stroke mean?
AnswerBore is the size of the pistons. Stroke is each time the piston moves e.g. the piston moving up is 1 stroke then down is another stroke. there are both 2 and 4 stroke engines, a 2 stroke engine 'fires' once every revolution and a 4 stroke engine 'fires' every 2 revolutions. Hope that explains it!The answer is not fully correct. Bore is indeed the size, meaning the "diameter" of the pistons, and the strokeis actually the "depth" of the piston from top to bottom. In other words, it is the distance that the pistons undergo in one stroke ( as explained above ). for example, in service manuals you will find : Bore and Stroke - 74 X 58 mm that is : Bore = 74mm & Stroke = 58mm . :) Ophir BYv :)
If speed of a two-stroke engine is N then what is the speed of a four-stroke engine?
It could be anything. The difference between the two is that in a two-stroke engine the piston goes back and forth (two strokes) for every ignition event (spark plug firing for a gas engine or fuel injection for a Diesel), while it goes back and forth twice (four strokes) for a four stroke engine.
What is a 2 stroke dirt bike?
A 2-stroke engine requires that you mix oil with your gas where a 4-stroke engine uses gas straight out of the pump. A 2-stroke engine does not have any valves and therefore, weighs less than a 4-stroke engine. 2 strokes fire once for each revolution whereas a 4-stroke fires once every other revolution. 2 stroke engines are easier to maintain (less moving parts - no valves, no oil pump, etc.) However, you do have to mix your gas, they are less efficient and much worse for the environment, because there is constantly unburned oil and fuel passing through to the exhaust. yeh, basically a 2 stroke engine has one powerstroke in every 2 strokes of the piston. a power stroke is the piston stroke that provides the power, the spark plug fires and forces the piston downwards. so the 2 stroke cycle is basically compression, power, compression, power etc. it uses the start and end of these 2 strokes to also perfrom intake and exhaust. whereas a 4 stroke has one powerstroke for every 4 strokes of the piston. its cycle is intake, compression, power, exhaust. INTAKE - intake valve(s) open and as the piston moves down and suck in charge (mix of fuel and air), the intake valve(s) then close COMPRESSION- the piston moves upwards compressing the charge, at the top of this stroke the spark plug fires POWER- and ignites the charge forcing the piston downwards. EXHAUST- the exhaust valve opens and the piston moves upwards and forces the exhaust out.
How many piston come in two and four strock accordingly?
In a two-stroke engine, there is typically one piston that completes a power cycle with every revolution of the crankshaft. In contrast, a four-stroke engine uses one piston to complete a power cycle over two revolutions of the crankshaft, meaning there is one piston per cylinder, but it takes two revolutions to produce one power stroke. Thus, both types of engines can have multiple pistons depending on the number of cylinders, but the operation per cycle differs significantly.
