Difference between 2 stroke and 4 stroke ic engine

4 STROKE ENGINE • 4 stroke engine completes 2 rotations of crankshaft after completing one cycle • Power is produced once every 4 strokes of the piston. • Engine design is a bit complicated due to valve mechanism which is operated through gear & chain mechanism • Engine design is a bit complicated due to valve mechanism which is operated through gear & chain mechanism • Mixture remains only in the combustion chamber 2 STROKE ENGINE • 2 stroke engine completes 1 rotation of crankshaft after completing one cycle. • Power is produced once during 2 strokes of the piston. • 2 stroke engine has ports which makes it's design simpler.and addition of oil is required • A bump or protuberance may be needed on top side of piston. • Air-fuel mixture enters through inlet port & travels to combustion chamber passing through crankcase. • 2 stroke engines are lighter and louder comparatively. ADVANTAGES OF 4 STROKE ENGINE :- More torque :- In general, 4 stroke engines always make extra torque than 2 stroke engine at low RPM. Although 2 stroked ones give higher torque at higher RPM but it has a lot to do with fuel efficiency. More fuel efficiency :- 4 stroke engines have greater fuel efficiency than 2 stroke ones because fuel is consumed once every 4 strokes. Less pollution :- As power is generated once every 4 strokes & also as no oil or lubricant is added to the fuel; 4 stroke engine produces less pollution. More durability :- We all know that more the engine runs, quicker it wears out. 2...

Read More Marine FAQs Here What’s The Importance Of 2 Stroke Product Application And Its Mixing Ratio? The precise 2 stroke oil ratio depends on your manufacturer’s instructions, as each engine can have varied requirements. If you put too much oil, it can generate additional carbon build-up, making it difficult to start the engine. What’s The Difference Between Marine And Automotive Engine Oil? Marine and automotive engine oils are not interchangeable. The two primary reasons for this are water and wear. Consider that corrosion caused by water is a primary concern for marine engines. Useful Resources Find out how Valvoline can service your business through our library of industry articles and videos. © 2023 Valvoline Global Operations ™ Trademark, Valvoline Global Operations

Two-Stroke vs Four-Stroke Two Strokes Four Strokes It has one revolution of the crankshaft during one power stroke. It has two revolutions of the crankshaft during one power stroke. It generates high torque. It generates less torque. It uses a port for the fuel’s outlet and inlet. It uses valves for the fuel’s outlet and inlet. Its engines result in lesser thermal efficiency. Its engines result in higher thermal efficiency. It has a larger ratio in terms of power to weight. It has a lesser ratio in terms of power to weight. It generates more smoke and shows less efficiency. It generates less smoke and shows more efficiency. Requires more lubricating oil as some oil burns with the fuel. Requires less lubricating oil. Due to poor lubrication, more wear and tear occurs. Less wear and tear occurs. Engines are cheaper and are simple to manufacture. Engines are expensive due to lubrication and valves and are tough to manufacture. Engines are basically lighter and noisier. Engines are basically heavier because their flywheel is heavy and less noisy. RELATED ARTICLES:

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Earlier in the Engines section we saw how 4 stroke & 2 stroke engines work ! We might like to give a thought on which is better one OR which has more advantages.So in this article we are going to discuss about the differences, advantages & disadvantages of 4 stroke & 2 stroke engine. Working of 2 stroke engine ! Working of 4 stroke engine ! Difference between 4 stroke & 2 stroke engine ! 4 STROKE ENGINE 2 STROKE ENGINE 4 stroke engine completes 2 rotations of crankshaft after completing one cycle. 2 stroke engine completes 1 rotation of crankshaft after completing one cycle. Power is produced once every 4 strokes of the piston. Power is produced once during 2 strokes of the piston. Engine design is a bit complicated due to valve mechanism which is operated through gear & chain mechanism. 2 stroke engine has ports which makes it's design simpler. No need of adding oil or lubricant to fuel. Addition of oil is required. Top side of the piston is flat. A bump or protuberance may be needed on top side of piston. Mixture remains only in the combustion chamber. Air-fuel mixture enters through inlet port & travels to combustion chamber passing through crankcase. 4 stroke engines are heavier. 2 stroke engines are lighter comparatively. 4 stroke engines make less noise. 2 stroke engines are louder comparatively. Note :-For detailed explanations & working visit here for ADVANTAGES OF 4 STROKE ENGINE :- • More torque :- In general, 4 stroke engines always make extra torque than 2 stro...

What’s the difference between 2-stroke and 4-stroke engines? Fuel for a 2-stroke engine has a small amount of oil mixed into it. It is called a “2-stroke” because just one up and down movement of the piston—the 2 strokes—performs the full cycle of intake, compression, combustion and exhaust. No intake or exhaust valves are used and instead, small holes called scavenging ports in the cylinder wall are used for drawing in air and expelling exhaust. Because combustion takes place with each revolution of the crankshaft with a 2-stroke, this format puts out more power than a 4-stroke engine and the power has more instantaneous delivery. This are some reasons why 2-stroke engines have a long history of use on many different types of motorcycles. However, concern for more environmentally friendly performance grew and 4-stroke engines are now the norm because they inherently have better fuel economy and less exhaust smoke. As of 2019, the only 2-stroke motorcycles Yamaha makes are for closed-course competition and some models for export. Nonetheless, Yamaha 2-stroke products have a simple, lightweight construction and comparatively easy maintenance, and their high reliability keeps them popular in many regions. Today, Yamaha 2-stroke snowmobiles are used to traverse the icy cold environment of Russia, and our 2-stroke outboard engines are widely used across Africa for fishery. And, many motorcycle enthusiasts continue to love 2-strokes for their punchy, breathtaking feeling of acc...