Why do some diesel engine manufacturers recommend machining the exhaust valve spindle sealing surface with a half degree difference to the valve seat angle?

asked 03 Aug '18, 13:57

Aug. 3, 2018, 1:57 p.m.
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Half degree difference between exhaust valve spindle sealing surface angle valve seat angle is required to improve valve sealing by compensating for pressure and temperature effects.

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answered 03 Aug '18, 14:01

Aug. 3, 2018, 2:01 p.m.
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