Lubrication system with an oil bypass valve

In an internal combustion engine having an oil pump, an oil pan constructed to contain a supply of oil, a supply passage operably connecting the oil pan to the oil pump, an oil gallery passage leading from the oil pump to lubrication locations in the internal combustion engine, return passages leading from the lubrication locations back to the oil pan, and a liquid coolant system having a supply of liquid coolant for cooling said internal combustion engine;

• the improvement characterized by:
• a bypass conduit leading from the oil pump back to the oil pan bypassing said lubrication locations in the internal combustion engine;
• said bypass conduit including a valve that is operable between an open position and a closed position;
• an electronic controller with inputs sensitive to oil pressure sensed in said oil passages and to liquid coolant temperature, said controller controlling the opening and closing of said valve, in order to regulate oil flow through said bypass conduit.

In an internal combustion engine having an oil pump, an oil pan constructed to contain a supply of oil, a supply passage operably connecting the oil pan to the oil pump, an oil gallery passage leading from the oil pump to lubrication locations in the internal combustion engine, return passages leading from the lubrication locations back to the oil pan;

• the improvement characterized by:
• a bypass conduit leading from the oil pump back to the oil pan bypassing said lubrication locations in the internal combustion engine;
• said bypass conduit including a valve that is operable between an open position and a closed position;
• an electronic controller with inputs sensitive to oil pressure sensed in said oil passages and to oil temperature, said controller controlling the opening and closing of said valve, in order to regulate oil flow through said bypass conduit.