List the 4 strokes in an internal combustion engine.

This Otto – Langen engine later became the “Otto Cycle” engine, which is nothing but a spark ignition engine (all modern gasoline/petrol engines).Īll these engines are technically four stroke engines. Lenoir developed them in mid-1800’s) were having a poor efficiency of 4 – 5%.Ĭouple of years later, Nikolaus August Otto and Eugen Langen developed an improved version of the Lenoir engine with efficiency up to 11%. The first generation of internal combustion engines (J. Since their first development in the second half of the 19 th century, the Internal Combustion Engines were always a topic of interest to engineers and scientists. This made it possible to manufacture reasonably small engines with decent power output that we can use in our vehicles. The power to weight ratio is very less in case of internal combustion engines. All our automobile and generator engines are of this type. In case of an internal combustion engine, the combustion of fuel happens inside the cylinder. Steam Engine is the best example of external combustion engine.

In external combustion engines, the combustion of fuel takes place outside the main engine parts (the cylinder). Most engines we have are technically ‘Heat Engines’ as they convert thermal energy (usually from combustion of fuels, so chemical energy to thermal energy and) into mechanical work. Comparison: 2 Stroke vs 4 Stroke EnginesĪ Brief Note on Internal Combustion Enginesīefore we start with two stroke and four stroke engines and compare 2 stroke vs 4 stroke engines with respect to important parameters of an engine, let us quickly take a look at what exactly is an Engine and also what is an Internal Combustion Engine.A Brief Note on Internal Combustion Engines.

List the 4 strokes in an internal combustion engine.