Which operating condition of a diesel engine...

Which operating condition of a diesel engine...

Question 1 of 27070

Q

Which operating condition of a diesel engine is indicated by excessive firing pressures?

A

Over speeding

B

Overload

C

Low exhaust temperature

D

High crankcase pressure

Question 1 / 270705eccefa3bacbc34ba4d47dc2

Question 1 of 270705eccefa3bacbc34ba4d47dc2

Which operating condition of a diesel engine is indicated by excessive firing pressures?

Question 1 of 27070

Study area:

Study area:

Q

Which operating condition of a diesel engine is indicated by excessive firing pressures?

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🔍 Key Concepts

• Relationship between combustion pressure and engine load in a diesel engine • Effects of over-speeding vs overloading on cylinder firing pressure • Typical causes of high crankcase pressure and whether they affect firing pressure

💭 Think About

• If firing pressure inside the cylinder is higher than normal, what change in fuel burning or engine loading would cause that? • Which of the listed conditions would mainly affect rotational speed, and which would mainly affect how hard the engine is working? • Does low exhaust temperature usually go with high or low cylinder firing pressures?

✅ Before You Answer

• Match high firing pressure with the condition that increases cylinder peak pressure directly, not just speed • Eliminate any option that mainly affects crankcase conditions rather than combustion chamber conditions • Think about whether low exhaust temperature is normally seen with rich/hard-burning or lean/light-burning operation