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wankel made an engine which is now in the Mazda rx8 which is a rotary engine,in which the piston rotates,rather than go up and down
Also a rotary has not got a piston it has a ROTOR that ROTATES around a bore.(like a block in a 4 or 2 Stroke) a rotor has 3 sides that pass a intake port, a sparkplug chamber and an exhaust port.
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Why three stroke engine not possible?
a stroke is a half rotation of a crankshaft. a three stroke would finish would only be 1 1/2 revolutions.
Is it possible to re-engine a 747 with only 2 GE90?
No it is certified as a 4 engine aircraft it would require 4 engines
Why does other air crafts uses 4 engines to fly while others use 2 engines?
It's a question of trade offs and compromises. Two engines are easier to deal with than four engines, you'll only have two throttles, two fuel systems, two oil pressure gauges etc etc. OTOH, to get the same power out of two engines as you would have out of four, each engine has to be doubly powerful, and that's a problem too. It'll be bigger, heavier, might run warmer etc. And if you lose one out of two engines during flight, that's a much bigger problem than losing one engine out of four.
Can you name and describe the four strokes that make up one full cycle of a 4-stroke engine?
The Otto cycle, know as the four stroke cycle is as follows.InductionCompressionPowerExhaustThis is a simplified explanation of a petrol engine, the basic details are correct. Most are also relevant to a CI engine. It is not meant to be a definitive answer and is only a description for the basic operation.Induction:The inlet valve opens and the piston moves down the cylinder causing a partial vacuum and drawing an air/fuel mixture into the cylinder through the inlet manifold.Compression:The inlet valve closes and the piston moves up the cylinder compressing the air/fuel mixture. The compression ratios vary.Power:Near the top of the compression stroke a spark is induced and the air/fuel mixture is ignited. This causes the gasses to expand rapidly and forces the piston down the cylinder.Exhaust:The exhaust valve opens and the piston moves up the cylinder expelling the burnt gasses out through the exhaust manifold. The exhaust valve closes and the cycle starts again.intake: In this stroke air (and in non-fuel-injected engines gasoline) is drawn in.compression: In this stroke air (and in non-fuel-injected engines gasoline) is compressed (just before the end of this stroke in fuel-injected engines the gasoline is injected, then a spark ignites the fuel/air mixture).expansion: in this stroke the burning fuel/air mixture pushes against the piston, doing work.exhaust: in this stroke the burnt fuel/air mixture is pushed from the cylinder to make room for a fresh charge on the next intake stroke.Intake, compression, power, exhaust.The first stroke down takes the air/fuel mixture in thus intake, then as the cylinder rotates up, the mixture compresses. The fuel is ignited and the power stroke starts down and as the cylinder goes back up it is the exhaust phase where it expels the burnt fuel and then starts the first stroke again
Why two stroke engine not used in aircrafts?
In the two stroke petrol engine as you know suction,compression,ignition,expansion and exhaust is completed in only two stroke and one revolution of crank wheel more over diesel ignites at very high pressure which is not the same in case of petrol........if petrol is also ignited under pressure it explodes producing a big thumping sound.called KNOCKINGthis may reduce the power output and also lead to breakdown of the engine. For the above reason two stroke engine cannot compress air and ignite the fuel like diesel engine.
Do I need to mix oil in with my gas my Yamaha 350 raptor?
No the raptor is a four stroke you only use mix in two stroke engines.
In two stroke engine Crankshaft how many revolution takes place?
A two stroke engine has half the strokes of an otto (or four stroke) engine, therefore it takes two crankshaft roatations to complete a cycle on a four stroke engine and only one revolution in a two stroke engine. There are several types of two stroke engines, the different types have to do with how the receive the air/fuel mixture, also you have two stroke diesel engines.
Does a two stroke engine have only one valve per cylinder?
Some two stroke engines have 4 valves, Detroit Diesel 71 series and 53 series engines for example. Most small 2 stroke engines have no "Valves" at all in the sense of the "POP" valve used in four stroke engines. Some people feel these engine has one valve because the piston acts as the valve covering the ports cut into the cylinder walls.
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.
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.
What mixture do you put in a 4 stroke engine?
Four stroke engines such as lawn mowers etc need only straight fuel. Either leaded or unleaded (depending on age and availability). no oil or other mixing is required
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)
What is the name of the two stroke engine cycle?
I think you are looking for a detailed engineering answer. Common usage is that a two stroke engines is called a two stroke engine. By the way my experience says that two stroke engines only have two strokes and the second one is fatal.
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.
Are 2 stroke and 4 stroke the only engines used commercially?
ye it is because they just use stock atvs,dirtbikes,ext
Difference between the events of four stroke petrol engine and that of a diesel engine?
Diesel engines are still 4-stroke (unless and early Detroit engine which were 2-stroke) only real difference between gas and diesel is fuel delivery and ignition.diesel uses high compression,fuel atomization and heat to fire cylinder,where gas engines need a ignition source.hope info was helpfull.
Is a rm 125 2 or 4 stroke?
The Suzuki RM125 is indeed a two stroke. This can be observed by the bulge in the exhaust pipe. This feature is only present on 2-stroke engines.
