A four-cycle, medium speed, eight cylinder,...

Study

Question 1 of 205eccefa1bacbc34ba4d473ca

A four-cycle, medium speed, eight cylinder, in-line diesel engine has a firing order of 1-5-2-6-8-4-7-3. When checking exhaust valve lash with the crankshaft set with #8 piston at TDC in the firing position, which cylinder exhaust valves can be checked for proper valve lash?

Back

Question 1 of 20

5eccefa1bacbc34ba4d473ca

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 cycle and when valves are open/closed at TDC on the firing stroke • How a firing order relates to crankshaft position and which cylinders are on overlap vs firing • The idea of companion cylinders (one on compression/firing TDC while its pair is on overlap TDC) in an in-line engine

💭 Think About

• Think about what is happening to the exhaust valve of #8 when that cylinder is at TDC on the firing stroke – is it moving, or fully seated? • For each other cylinder in the firing order, which ones will be closest to TDC with both valves closed when #8 is at firing TDC? • How does the concept of companion cylinders help you choose which other cylinders’ valve lash can be checked safely at the same crankshaft position?

✅ Before You Answer

• Confirm that at TDC on the firing stroke both intake and exhaust valves on that cylinder are fully closed, making it safe to check lash • Identify which cylinders are the companion cylinders to #8 on this 8‑cylinder, in-line engine using the firing order • Verify that you only choose cylinders whose exhaust valves are not in overlap (not just opening or just closing) at this crankshaft position

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

Quick actions

— No credit card needed