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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 fuel consumption is less in 4 stroke engine then in 2 stroke engine?
Why the fuel consumption is less in 4 stroke engine as compared to 2 stroke engine
Why you prefer four stroke engine over two stroke engine?
Four stroke engines are quieter than two strokes, but have less power.
Engine's compression ratio is greater between 2 stroke and 4 stroke engine?
Typically, a 2-stroke engine has a higher compression ratio compared to a 4-stroke engine. This is because 2-stroke engines can complete a power cycle in just two strokes of the piston, allowing for a more compact design and higher compression. However, the specific compression ratio can vary widely depending on the engine design and application. In general, while 2-stroke engines may have higher ratios, 4-stroke engines tend to be more efficient and produce less emissions.
What are the advantages and disadvantages of 4 stroke engine?
Advantages of a 4-stroke engine include improved fuel efficiency, lower emissions, and quieter operation compared to 2-stroke engines. They also tend to have a longer lifespan due to better lubrication and less wear. However, disadvantages include greater complexity and weight, as well as higher manufacturing costs. Additionally, 4-stroke engines typically produce less power per cycle compared to 2-stroke engines, making them less suitable for certain high-performance applications.
Why does 2-stroke engine need for supercharger more than 4-stroke engine?
A 2-stroke engine typically requires a supercharger more than a 4-stroke engine because it completes a power cycle with only two strokes of the piston, resulting in less time for air and fuel intake. This can lead to incomplete combustion and lower efficiency. A supercharger increases the intake air pressure, allowing for a denser air-fuel mixture, which enhances power output and combustion efficiency. In contrast, 4-stroke engines have a longer intake phase, making them less reliant on forced induction for optimal performance.
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 does 4-stroke engine has higher RPM than 2-stroke engine?
the 2 stroke has more rpm than 4 stroke because it has less moving parts and the cycles are faster because there is only 2 and in the 4 stroke there is 4
Why does a four stroke engine run cooler than a 2 stroke engine?
A four-stroke engine runs cooler than a two-stroke engine primarily because it has a more efficient cooling system due to its longer cycle, which allows for more complete combustion and better heat dissipation. In a four-stroke engine, the intake, compression, power, and exhaust strokes are separated, giving more time for heat to escape during the exhaust stroke. In contrast, a two-stroke engine fires once every revolution, leading to less time for heat to dissipate and often resulting in higher operating temperatures. Additionally, two-stroke engines typically mix oil with fuel for lubrication, which can also contribute to increased heat generation.
Advantages of a 2 stroke?
-Low maintainence(no crank case oil to change or valves to set) -Simple in design (VERY easy to rebuild) -The ability to rev much higher than a 4-stroke(less minor shifting) -Impressive "snap" during the power band -Much less moving parts than a 4-stroke A 2-stroke engine fires on every complete engine cycle giving it, in theory, twice the power of a 4-stroke. Unfortunately, due to the engine design restrictions, the 2-stroke's power only becomes available at higher RPMs. At low RPMs 2-stroke engines are clunky and gutless. So, if you ride aggressive, your always on the throttle, you need that quick pick up often, you will benifit from it.
Why does a two stroke engine pollute air more than a four stroke engine?
A two-stroke engine pollutes the air more than a four-stroke engine primarily because it completes a power cycle in just two strokes of the piston, allowing for less efficient combustion. This design often results in unburned fuel being expelled with the exhaust, leading to higher emissions of hydrocarbons and other pollutants. Additionally, two-stroke engines typically lack sophisticated emissions control technologies, further exacerbating their environmental impact. In contrast, four-stroke engines have a more complete combustion process and usually incorporate systems to reduce emissions.
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.
