Dear Sirs,
What are the causes for inlet / suction valves cut during operation for a medium speed diesel engine ?
Appreciate yr valuable feedback. Thks.
Inlet / Suction valve cut
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- Engineering Mentor
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Re: Inlet / Suction valve cut
Sorry Pengze. i do not understand your question. Please elucidate.
BP
BP
It is always better to ask a stupid question than to do a stupid thing.
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- Officer of the Watch
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Re: Inlet / Suction valve cut
Usually caused by poor valve rotators, and worn guides. Medium speeds are famous for this. The exhaust valve is removable in a pocket sometimes and the intake valve is never looked at. Water can be a problem in the air from intercoolers and can cut valves.
regards
jimmy
regards
jimmy
Re: Inlet / Suction valve cut
If the valve stem seals are defective, will this contribute to the suction / inlet valve cut / damage ?
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Re: Inlet / Suction valve cut
The stem seals control lubication to the valve stem and if they wear build ups of carbon due to over lubrication appear on the stem and the valve sticks and can seize in the guide. Sticky valves can off course contribute to cuts. Once the suction valve leaks and gas passes the stem seal there is no lubrication and a grey scum is seen in the valve area and contaminates the oil.
regards
jimmy
regards
jimmy