Multiple choice general knowledge science & technology

Diesel engine is more efficient than Petrol engine with regards to thermal efficiency?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Diesel engines have higher thermal efficiency than petrol engines due to higher compression ratios and leaner air-fuel mixtures. Diesel engines typically achieve 40-45% thermal efficiency compared to 30-35% for petrol engines. This is why diesel vehicles often have better fuel economy.

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