Mechanical Engineering - IC Engines and Nuclear Power Plants - Discussion
Discussion Forum : IC Engines and Nuclear Power Plants - Section 1 (Q.No. 30)
30.
The thermal efficiency of diesel engines is about
Answer: Option
Explanation:
The thermal efficiency of diesel engines is about 30-50%. This means that for every 100 units of fuel energy input, the engine is able to convert 30-50 units of that energy into useful work. The remaining energy is lost as heat or exhaust.
The maximum theoretical efficiency of a diesel engine is about 70%. However, this is rarely achieved in practice due to factors such as friction, heat loss, and incomplete combustion.
Discussion:
36 comments Page 4 of 4.
RK CHHIMPA said:
9 years ago
Its 40% only which I have referred from various books.
Kajal bachhav said:
9 years ago
Thermal efficiency of C.I engine is up to 40%.
DHIRENDRA KUMAR said:
9 years ago
Is it 30 or 35%?
Punith said:
8 years ago
I think the Thermal efficiency of the diesel engine is about 32-38%.
Sriram said:
8 years ago
since maximum compression ratio for a diesel engine is 22:1; by considering the thermal efficiency of an Otto cycle.
Efficiency = 1- (1/ CR^(1.4-1)). CR=22 so therefore efficency is 70%.
Efficiency = 1- (1/ CR^(1.4-1)). CR=22 so therefore efficency is 70%.
Rama said:
8 years ago
Efficiency of diesel engine is about 30-35%.
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