In a naturally aspirated diesel engine, the...

Question 1 / 205eccefa2bacbc34ba4d47a8c

Question 1 of 205eccefa2bacbc34ba4d47a8c

In a naturally aspirated diesel engine, the volumetric efficiency of the intake air charge is mainly influenced by the __________.

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Question 1 of 20

5eccefa2bacbc34ba4d47a8c

In a naturally aspirated diesel engine, the volumetric efficiency of the intake air charge is mainly influenced by the __________.

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🔍 Key Concepts

• volumetric efficiency as a measure of how completely the cylinder fills with fresh air on the intake stroke • How airflow into the cylinder is affected by intake path restrictions in a naturally aspirated (non‑turbocharged) engine • The difference between factors that affect how much air gets in vs. factors that affect what happens after the air is inside (combustion, pressure, temperature)

💭 Think About

• Which option directly affects the ease and volume of air flowing into the cylinder during the intake stroke in a naturally aspirated engine? • Which options mainly influence combustion pressure or efficiency after the air-fuel mixture is formed, rather than the actual filling of the cylinder? • For each choice, ask yourself: does this change the amount of air that can physically enter the cylinder at a given speed and load, or does it mainly change how that air is used during combustion?

✅ Before You Answer

• Be clear on the definition of volumetric efficiency: the ratio of the actual amount of air inducted to the theoretical maximum at ambient conditions. • Identify which choices are primarily related to combustion and power output (inside-cylinder pressure, mixture burning) rather than intake filling. • Focus on the factor that most directly affects intake flow area and restriction in a naturally aspirated engine, where no turbo or blower is helping to push air in.

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Question 1 of 20

In a naturally aspirated diesel engine, the volumetric efficiency of the intake air charge is mainly influenced by the __________.

valve size

fuel injection pressure

cylinder mean effective pressure

compression ratio

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Question 1 / 205eccefa2bacbc34ba4d47a8c

Question 1 of 205eccefa2bacbc34ba4d47a8c

In a naturally aspirated diesel engine, the volumetric efficiency of the intake air charge is mainly influenced by the __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d47a8c

In a naturally aspirated diesel engine, the volumetric efficiency of the intake air charge is mainly influenced by the __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed