The theoretical minimum compression ratio...

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Question 1 of 205eccefa1bacbc34ba4d4735c

The theoretical minimum compression ratio necessary to ensure compression ignition in a direct injection diesel engine is __________.

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5eccefa1bacbc34ba4d4735c

The theoretical minimum compression ratio necessary to ensure compression ignition in a direct injection diesel engine is __________.

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🔍 Key Concepts

• Compression ignition in diesel engines (how it differs from spark ignition) • Typical compression ratio range for marine direct-injection diesel engines • How higher compression ratio affects air temperature at top dead center

💭 Think About

• First, recall what must happen to the air in the cylinder for diesel fuel to ignite without a spark. What temperature conditions are needed? • Think about the normal operating compression ratios of direct injection diesels. Which of these options looks more like a "borderline minimum" than a typical or very high value? • Eliminate any answers that are clearly too low to reliably raise air temperature enough for auto‑ignition of diesel fuel.

✅ Before You Answer

• Compare each choice with the common compression ratios you have studied for medium and high‑speed marine diesels. • Ask yourself which option represents a minimum threshold rather than a comfortable operating value. • Verify that the answer you choose would still allow enough temperature rise at top dead center for reliable compression ignition under most conditions.

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Question 1 of 205eccefa1bacbc34ba4d4735c

The theoretical minimum compression ratio necessary to ensure compression ignition in a direct injection diesel engine is __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d4735c

The theoretical minimum compression ratio necessary to ensure compression ignition in a direct injection diesel engine is __________.

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