# Difference Between Four-stroke and Two-stroke Engine [With PDF]

Hey, how are you? Assuming you are good! Today our discussion on Four-Stroke vs Two-Stroke Engine.

As we all know the there are two types of engines (although there are various kinds of engines are available however these are some popular engines we are talking about) one is four-stroke another one is two-stroke. OH! also there is another type of engine, Dual Combustion Engine, however, today we will differentiate between these two engines (2-Stroke & 4-Stroke), so let’s dive into the topic.

Contents

## First, let’s see what is a Two-Stroke Engine?

We call an engine 2-stroke when the four successive strokes, i.e. Suction, Compression, Power, and Exhaust are completed in 1 revolution of the crankshaft, which means in the 360-degree rotation of a crankshaft all the successive strokes are completed.

## And What is a Four-Stroke Engine?

And again we call an engine 4-stroke when the same successive strokes (Suction, Compression, Power, and Exhaust) are completed in the 2-revolution of the crankshaft. i.e. 720-degree rotation of the crankshaft.

These are the basic things you know when you find the differences, so now let’s see some more differences between a 4-stroke engine and a 2-stroke engine.

RECOMMENDATION: We already have an in-depth article on the Four-Stroke Engine and how it works? and Also on Two-Stroke Engine. I will suggest you to reading those articles too.

## Difference Between Four-stroke and Two-stroke Engine:

So these are the quite few difference between the 2-stroke engine and 4-stroke engine, let me know in the comment section if you know more differences between these engines, I will love to show more.

And yeah, if you have any doubts regarding this topic, feel free to comment down below, I will reply here.

### What is a 2-Stroke Engine?

We call an engine 2-stroke when the four successive strokes, i.e. Suction, Compression, Power, and Exhaust are completed in 1 revolution of the crankshaft.

### What is a 4-Stroke Engine?

we call an engine 4-stroke when the same successive strokes (Suction, Compression, Power, and Exhaust) are completed in the 2-revolution of the crankshaft.

#### References:

Anup Kumar Dey

A Mechanical Engineer with 19 years of working experience in various renowned MNCs.