Engine temperature control system

An internal combustion engine comprising an engine block member including wall means at least partially defining an engine cylinder having a cylindrical portion and a head portion, an engine cooling system including a coolant jacket having a first portion for cooling a first part of said engine including the area in the vicinity of said cylindrical portion and having a second portion for cooling a second part of said engine including an area in the vicinity of said head portion, an engine driven pump for supplying coolant to said first coolant jacket portion, a discharge conduit connected to said second coolant jacket portion for discharging coolant from said second coolant jacket portion, a normally closed valve connecting said first and second coolant jacket portions, a temperature responsive element mounted in direct contact with said walls means and connected to said valve for opening thereof when the temperature of said engine block member adjacent to said wall means is above a predetermined level, and a spring for maintaining said valve in closed position irrespective of the coolant flow supplied to said first coolant jacket portion by said pump so long as the temperature of said engine block member is below said predetermined level.

An internal combustion engine comprising an engine block member including wall means at least partially defining an engine cylinder, and a cooling system including a coolant jacket, means for supplying coolant to said coolant jacket, a discharge conduit connected to said coolant jacket for discharging coolant from said coolant jacket, a normally closed valve connecting said coolant jacket and said discharge conduit, and means including a temperature responsive element in direct contact with said block member and operably connected to said valve for opening said valve to afford flow of the coolant from said coolant jacket portion to said discharge conduit when the temperature of said engine block member is above a predetermined level, and means for preventing said valve from opening when the temperature of said engine block member is below said predetermined level.

An internal combustion engine comprising an engine block member including wall means at least partially defining an engine cylinder, and an engine cooling system including a coolant jacket, an engine driven pump for supplying coolant to said coolant jacket, a discharge conduit connected to said coolant jacket for discharging coolant from said coolant jacket, a normally closed valve connecting said coolant jacket and said discharge conduit, a temperature responsive element mounted in direct contact with said wall means and connected to said valve for opening thereof when the temperature of said engine block member adjacent to said wall means is above a predetermined level, and a spring for maintaining said valve in closed position irrespective of the coolant flow supplied to said coolant jacket by said pump so long as the temperature of said engine block member is below said predetermined level.