An indication of a diesel engine air intake...

An indication of a diesel engine air intake...

Question 1 of 270705eccefa2bacbc34ba4d47a8f

An indication of a diesel engine air intake being partially clogged, is __________.

Question 1 of 27070

Q

An indication of a diesel engine air intake being partially clogged, is __________.

🔍 Key Concepts

• Diesel combustion basics – how much air vs. fuel is needed for proper burning • Effect of restricted air supply on combustion efficiency and exhaust gas temperature • Relationship between firing pressure (cylinder pressure at combustion) and how well the charge burns

💭 Think About

• If the air intake is partially clogged, what happens to the amount of oxygen available in the cylinder for combustion? • With less air but the same amount of fuel injected, would the combustion be more complete or less complete, and how would that affect exhaust temperature? • How would an under‑supplied air charge affect the maximum pressure reached during combustion (firing pressure)?

✅ Before You Answer

• Decide whether a reduction in air supply tends to raise or lower firing pressure • Decide whether incomplete combustion tends to raise or lower exhaust temperature • Eliminate any answer choices that don’t match what you expect for BOTH firing pressure and exhaust temperature under an air‑starved condition