Differentiate, in detail between a four stroke and a two-stroke IC eng

Question

Differentiate, in detail between a four stroke and a two-stroke IC engine.

24 Feb 2025

Answer :

Word Count : 564

A four-stroke internal combustion (IC) engine and a two-stroke IC engine are two major types of engines used in various applications. They differ fundamentally in their working principles, efficiency, fuel consumption, and design. Below is a detailed differentiation between the two:

### 1. Number of Power Strokes per Revolution
- Four-Stroke Engine: It completes one power stroke in every two revolutions of the crankshaft (i.e., 720° rotation).
- Two-Stroke Engine: It completes one power stroke in every single revolution of the crankshaft (i.e., 360° rotation).

### 2. Number of Strokes in a Cycle
- Four-Stroke Engine: The cycle consists of four strokes—intake, compression, power, and _____ ________ ________ ______ _____.
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