0
Explain the advantages of four-stroke engine over two-stroke engine
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is two advantages of a four stroke cycle engine over a two stroke cycle engine?
Pollution - 4 stroke has far less unburnt hydrocarbon in the exhaust.
Why you prefer four stroke engine over two stroke engine?
Four stroke engines are quieter than two strokes, but have less power.
What is advantages four stroke engine?
When comparing to a two-stroke engine, the four-stroke engine has the following advantages.Fewer emissions. Since the crankshaft has its own oil reservoir there is no need to add oil to the fuel, meaning there is no oil burned in the fuel.Better fuel consumption. The four-stroke engine complete a full cycle in four-stroke. This gives it greater control over which ports open at which times. On a two stroke engine, fuel and air is being forced into the cylinder while exhaust is being forced out, this causes some fuel and air to flow directly through the cylinder and out the exhaust. Four-stroke engines are also directly fuel injected which allows greater control over fuel delivery.Longevity. The four-stroke engine has a lower power to weight ratio than the four-stroke engine. In this respect, the engine components aren't pushed as hard as a two-stroke. This allows them to last longer.
What are advantages of two stroke engines over four stroke engines?
There are a couple, less parts for one therefore lighter. Also, 2 stroke engines fire every time the piston comes to the top. Which means every stroke is a power stroke. 4 stroke engines fire every other time.
What makes a two stroke engine produce twice as much power as a four stroke?
A 2-stroke engine makes power every2 cycles were a 4-stroke makes power every 4.Hence 2x power. This is absolutely INCORRECT! A two stroke engine develops it's PEAK horse power twice as fast as a four stroke for the reason given but that is it. For a given displacement a four stroke engine will ALWAYS make more torque and horsepower than a two stroke engine of equal displacement. This is due to the fact that a four stroke engine cleans the cylinder of contaminated (exhaust) air, compresses the air/fuel to a more efficient level, and draws a cleaner air/fuel mixture into the cylinder as there is no slow burning, air/fuel mixture contaminating oil mixed in the combustion charge. I have over forty years experience working on engines, and can tell you, the ONLY reason two stroke engines have lasted this long, is due to the fact that they weigh less than an equivalent horsepower four stroke engine. If they DID develop more horsepower, the four stroke would not have become the standard internal combustion engine used in transportation, generators, air compressors and the like.
How can you tell if a motorcycle is two stroke or four stroke?
it wont have valves in the head. If you remove the exhaust pipe from the head and turn over the engine by hand, there will only be a piston and no valves moving.
Whats the horsepower on a 250 dirt bike?
Depending on the type of 250cc engine, two-stroke or four-stroke, and the state of tune of the engine you can expect anywhere between 20hp for a nice relaxed trail bike to over 40 hp from a fire breathing two-stroke motocrosser.
Give one advantage of a two-stoke gasoline engine over a four stroke cycle engine?
If you have a two stroke engine and a four stroke engine that are the same size, the two stroke will have almost twice as much power as the four stroke.Also, with a two stroke engine you never have to worry about changing the oil or making sure that there is oil in the engine.2t engines are more simple and generally have more boost than a 4t motor of the same size. They're very fun to work on if you're into that too.However, they're also a lot less reliable than a 4t, require frequent oil top ups, have lower economy and can seize if not calibrated correctly.But then again, the maintenance is part of the 2t fun.
What is the difference between 2 stroke and 4 stroke?
in a two stoke engine ther is only two steps before it starts the cycle over, in a 4 stroke engine there is 4 strokes
How do you determine the compression stroke on a 350 Chevy engine?
Remove all the spark plugs and turn the engine over by hand. Place your thumb over the #1 plug hole and you will feel the pressure on the compression stroke. A compression gage will also tell you when you are on the compression stroke.
What is engine force?
pressure in cylinder over piston area = force force over stroke = work
Is there such thing as a 350cc 2 stroke engine?
There have been many examples of a 350cc two stroke engine made over the years. Kawasaki and Yamaha motorcycles used this type of engine as well as many other manufacturers.
