Increasing the exhaust valve tappet...

Question 1 / 205eccefa1bacbc34ba4d476c4

Question 1 of 205eccefa1bacbc34ba4d476c4

Increasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening __________.

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Question 1 of 20

5eccefa1bacbc34ba4d476c4

Increasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening __________.

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🔍 Key Concepts

• Valve timing and tappet (valve lash) clearance in a four-stroke diesel • How increasing clearance changes when the cam lobe actually contacts and releases the valve train • Relationship between cam profile, follower motion, and the valve’s open/close points in crankshaft degrees

💭 Think About

• Visualize the cam lobe and follower: if you increase the clearance, does the valve start to move sooner or later for the same cam position? • Once the cam lobe has passed its peak and is coming back down, with more clearance, will the valve stop moving (close) sooner or later? • Think about whether extra ‘slack’ in the system makes the valve spend more or less time off its seat.

✅ Before You Answer

• Confirm what tappet (valve lash) clearance physically is (the small gap between parts when the valve is fully closed). • Mentally sketch the cam lobe vs. valve lift diagram and see how adding clearance shifts the points where lift becomes zero and non-zero. • Verify whether more clearance increases or decreases the duration of valve opening in crankshaft degrees.

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Question 1 of 20

Increasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening __________.

later and closing earlier

later and closing later

earlier and closing earlier

earlier and closing later

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Question 1 / 205eccefa1bacbc34ba4d476c4

Question 1 of 205eccefa1bacbc34ba4d476c4

Increasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d476c4

Increasing the exhaust valve tappet clearance of a diesel engine will result in the exhaust valve opening __________.

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