Patent ID: 11959542
Assignee: GE INFRASTRUCTURE TECHNOLOGY LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An oil supply system for a transmission of a drive system, the oil supply system comprising:
a first oil receptacle collecting oil from a transmission casing of the transmission via a first oil return line;
a second oil receptacle collecting oil from at least one other portion of the drive system via at least one second oil return line;
an oil supply line and an oil supply pump connected to at least one of the first oil receptacle and the second oil receptacle, the oil supply line and the oil supply pump supplying oil to the transmission casing and the at least one other portion of the drive system;
a gas check valve in a first coupling line that fluidly couples the first oil receptacle to the second oil receptacle above a maximum fill level of both receptacles, the gas check valve operative by application of a pressure differential between the first oil receptacle and the second oil receptacle to prevent gas from flowing from the second oil receptacle to the first oil receptacle; and
a vacuum pump operatively coupled to the first oil receptacle and the second oil receptacle for selectively generating the pressure differential between the first oil receptacle and the second oil receptacle, such that the vacuum pump generates a negative pressure inside the first oil receptacle and inside the transmission casing connected to the first oil receptacle via the first oil return line.