Increasing the valve clearance between a...

Question 1 / 205eccefa1bacbc34ba4d476cb

Question 1 of 205eccefa1bacbc34ba4d476cb

Increasing the valve clearance between a valve stem and rocker arm, will result in the valve __________.

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Question 1 of 20

5eccefa1bacbc34ba4d476cb

Increasing the valve clearance between a valve stem and rocker arm, will result in the valve __________.

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🔍 Key Concepts

• How valve clearance (lash) affects the timing of when a valve first begins to lift off its seat and when it finally returns to the seat • The relationship between camshaft lobe, rocker arm movement, and the valve’s actual open period • What happens to the effective duration of valve lift when there is more “free play” before the rocker contacts the valve stem

💭 Think About

• Imagine the cam lobe starting to push the rocker: if there is more clearance, does the valve begin to open earlier or later in that cam rotation? • Think about the closing side: if there is more clearance, will the valve lose contact with the rocker and return to the seat earlier or later? • Put those effects together: does a delay in opening and/or change in closing point make the total open time longer or shorter?

✅ Before You Answer

• Be clear that increasing clearance means more gap (more lash), not less • Visualize at least one full cam revolution and when the valve actually moves compared with when the cam starts to lift the rocker • Confirm whether the valve is in contact with the rocker arm for a greater or lesser portion of the cam lobe’s lift period when clearance is increased

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Question 1 of 20

Increasing the valve clearance between a valve stem and rocker arm, will result in the valve __________.

closing later

opening sooner

staying open for a shorter period of time

staying open for a longer period of time

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Question 1 / 205eccefa1bacbc34ba4d476cb

Question 1 of 205eccefa1bacbc34ba4d476cb

Increasing the valve clearance between a valve stem and rocker arm, will result in the valve __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d476cb

Increasing the valve clearance between a valve stem and rocker arm, will result in the valve __________.

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