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Lubrication systems

QuestionAnswer
Oil Pump Draws oil from sump and pumps it under pressure through engine galleries.
Pressure Relief Valve Limits maximum oil pressure to protect seals, filter, and galleries during high RPM or cold starts.
Full-Flow 100% of oil passes through filter before reaching bearings (Standard modern design).
Bypass Only a small percentage filtered at a time.
Filter Bypass Valve Unfiltered oil bypasses the filter directly to galleries to prevent immediate bearing seizure.
Oil Strainer Coarse wire mesh that prevents large debris from entering and jamming the oil pump.
Oil Galleries Cast or drilled internal passages in the cylinder block and head that direct pressurized oil to crankshaft, camshafts, and valve gear.
Wet Sump Oil stored in pan at bottom of engine block.
Dry Sump Oil drains to shallow pan, pumped to external tank by scavenge pump, fed by separate pressure pump.
Created by: mikewj
 

 



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