Patent ID: 8485218
Filing Date: 2013-07-16
Classification: G05D,Y10T

Abstract:
1. A generator comprising: a rotor to be driven to rotate and generate electricity; a housing receiving said rotor; an oil supply including an oil inlet port and an oil outlet port; a pressure regulating valve to regulate the flow of oil from the inlet port to the outlet port, said pressure regulating valve including a valve sleeve mounted within said housing, said valve sleeve extending into a bore within said housing, and a valve spool mounted within said valve sleeve, said valve sleeve having a flange outward of an outer face of said housing, an inner end of said valve sleeve extending radially inwardly to form a ledge, and said ledge being spaced away from an inner face of said housing; said valve sleeve having an extending small bore extending from a radially inner end of said ledge, and received in a sense piston bore in said housing, and a sense piston received in said small bore, with said ledge being attached to said housing by bolts, with said flange limiting said valve sleeve from contacting said inner face of said housing as said bolts are tightened; and wherein the valve sleeve has an overall length, and an inner bore portion of said valve sleeve receiving said valve spool has an inner diameter, and a ratio of said overall length to said inner diameter being between 4.70 and 4.76.