# Mechanical Engineering - Automobile Engineering - Discussion

Discussion Forum : Automobile Engineering - Section 2 (Q.No. 6)
6.
The calorific value of petrol is about
36.5 - 38.5 MJ/kg
39.4 - 42.5 MJ/kg
42.7 - 43.5 MJ/kg
45.5 - 47 MJ/kg
Explanation:
No answer description is available. Let's discuss.
Discussion:
15 comments Page 1 of 2.

Gunasagar said:   7 years ago
Calorific value (plural calorific values) The amount of energy produced by the complete combustion of a material or fuel. Measured in units of energy per amount of material, e.g. KJ/kg. The amount of energy available from an item of food when digested, mostly from carbohydrates and fats.

Dharmik said:   5 years ago
Answer C is right. Diesel is denser than petrol and here we can conclude that the energy produced by diesel is more than the energy produced by petrol.

Rabari said:   10 years ago
For gasoline lower heating value is 44 MJ/KG and higher heating value is 47.3 MJ/KG but for calorific value lower heating value use.

Anik Kumar Sengupta said:   1 decade ago
The answer is incorrect. The correct answer should be D 45.5 - 47 MJ/Kg. The answer [C] is for diesel.

Shaikh gulam said:   6 years ago
The answer is incorrect. Gross calorific value for petrol is 46.4 so the answer should be D.

Navneet kumar said:   2 years ago
For petrol, calorific value is 45.8MJ/kg.

And for diesel, calorific value is 45.5MJ/KG.

Subhash said:   6 years ago
How to find calorific value without given temperature and liter?

Sonu kumar said:   10 years ago
For gasoline should be 44-47 and for diesel is 43-46.

Vishal said:   5 years ago
I think petrols CV is 45.5. So D is the right answer.
(1)

Snehasish said:   5 years ago
Answer is right, for diesel engine its value 42.5.