The intake and exhaust valves used in a...

Study

Question 1 of 205eccefa1bacbc34ba4d47668

The intake and exhaust valves used in a diesel engine are returned to their seats by __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d47668

The intake and exhaust valves used in a diesel engine are returned to their seats by __________.

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

• four-stroke diesel engine valve operation (intake and exhaust strokes) • the role of the camshaft, cam lobe, and push rod/rocker arm in opening valves • what actually causes a valve to close and seal tightly on its seat

💭 Think About

• When the valve is OPEN, which part or force actually lifts it off the seat: is it pressure in the cylinder, movement from the cam, or something else? • When the cam lobe rotates away and stops pushing on the valve gear, what force or component makes the valve move back DOWN onto its seat? • Which of the choices would work reliably at all engine speeds, loads, and during compression (before there is any combustion or exhaust flow)?

✅ Before You Answer

• Identify which item from the choices is a mechanical component that can work even when there is no pressure in the cylinder. • Ask yourself: could combustion or exhaust pressure alone close the valve during compression, starting, or low-load conditions? • Confirm which option is commonly visible around the valve stem in diagrams or real engines as the device that pulls the valve shut.

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

Quick actions

— No credit card needed

Study

Question 1 of 205eccefa1bacbc34ba4d47668

The intake and exhaust valves used in a diesel engine are returned to their seats by __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d47668

The intake and exhaust valves used in a diesel engine are returned to their seats by __________.

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