Question

The total power developed by combustion of fuel in the combustion chamber is called ____________

(a) brake power

(b) indicated power

(c) mean effective pressure

(d) none of the mentioned

This question was addressed to me by my college professor while I was bunking the class.

The question is from Engine Power in portion Measurements and Testing/Performance Parameters and Characteristics of IC Engine

Answer 1

The correct answer is:

(b) indicated power

Explanation:

- Indicated Power (I.P.) refers to the total power developed by the combustion of fuel in the combustion chamber before any mechanical losses, such as friction, are subtracted. It is the power produced by the engine based on the pressure inside the cylinders during the combustion process.

- Brake Power (B.P.) is the power available at the engine's output shaft, after accounting for mechanical losses such as friction within the engine.

- Mean Effective Pressure (M.E.P.) is the average pressure in the cylinders during the power stroke and is used to estimate the engine's power output.

So, indicated power represents the raw power generated directly from the fuel combustion process in the engine.