Oil cooler control
First Claim
1. In a combustion engine temperature responsive system for passing lubricating oil from the combustion engine alternatively either directly back to the engine or through a cooling coil prior to return to the engine,a valve device comprising a housing having a valve chamber therein,an oil supply passage for oil from the engine to the chamber,an oil return passage for oil from the chamber to the engine,a cooling coil intake passage for oil from the chamber to the cooling coil and a cool oil discharge passage for oil from the cooling coil to the chamber,said chamber having adjoining side wall structures of different diameters substantially cylindrically shaped at opposite ends, and end walls for the respective side wall structures,an annular valve seat extending around an interior wall of said chamber at the junction of the side wall structure for one end with the side wall structure for the other end, whereby the portion of the valve seat of smallest diameter is no smaller than the diameter of the smaller of said side wall structures,a valve member comprising a housing and a thermal responsive reciprocating piston element, said housing having an annular valve element thereon at the outermost perimeter in operable association with said seat,said thermal responsive reciprocating piston element in said valve member having an operating engagement between said housing and said valve member and responsive to temperature changes in said oil,resilient means in one of said side wall structures acting between the end wall therefor and said valve element in a direction normally holding said valve element in an unseated condition whereby to substantially bypass said coil,said reciprocating piston element having movement in a direction to overcome tension in said spring and to seat said valve element on said seat when oil temperature is relatively high.
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Accused Products
Abstract
An oil cooler control for the cooling of lubricating oil especially advantageous for engines of relatively low horsepower operating at relatively high R.P.M. makes use of a thermal responsive bypass valve device for altering the path of oil circulation over a cooling coil. The valve device has a valve chamber with a valve seat intermediate opposite ends and a valve element cooperates with the seat in response to a thermal drive element. When the oil is cool most of the oil is passed from the engine through the chamber and directly back to the engine. As the oil temperature increases the valve element is seated causing the oil to be passed through a cooling coil and then back to the engine.
48 Citations
6 Claims
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1. In a combustion engine temperature responsive system for passing lubricating oil from the combustion engine alternatively either directly back to the engine or through a cooling coil prior to return to the engine,
a valve device comprising a housing having a valve chamber therein, an oil supply passage for oil from the engine to the chamber, an oil return passage for oil from the chamber to the engine, a cooling coil intake passage for oil from the chamber to the cooling coil and a cool oil discharge passage for oil from the cooling coil to the chamber, said chamber having adjoining side wall structures of different diameters substantially cylindrically shaped at opposite ends, and end walls for the respective side wall structures, an annular valve seat extending around an interior wall of said chamber at the junction of the side wall structure for one end with the side wall structure for the other end, whereby the portion of the valve seat of smallest diameter is no smaller than the diameter of the smaller of said side wall structures, a valve member comprising a housing and a thermal responsive reciprocating piston element, said housing having an annular valve element thereon at the outermost perimeter in operable association with said seat, said thermal responsive reciprocating piston element in said valve member having an operating engagement between said housing and said valve member and responsive to temperature changes in said oil, resilient means in one of said side wall structures acting between the end wall therefor and said valve element in a direction normally holding said valve element in an unseated condition whereby to substantially bypass said coil, said reciprocating piston element having movement in a direction to overcome tension in said spring and to seat said valve element on said seat when oil temperature is relatively high.
Specification