Transmission lubrication and motor cooling system

Details Transmission lubrication and motor cooling system Transmission lubrication and motor cooling system

1981-09-11

1983-12-06

Peters, Jr., Joseph F.

Motor vehicles

Power

Electric

74467, 184 612, 310 64, H02K 900

Patent

active

044187777

ABSTRACT:
The electric motor and transmission that apply power to the drive wheels of a vehicle are supplied with hydraulic fluid to lubricate the transmission and to cool the motor by a common fluidic circuit. The annular space between the motor shaft and a driveshaft provides a passage wherein fluid is distributed to the motor and the transmission under pressure. The rotor of the motor has axial passages through which the fluid flows from a radial passage connecting the annular space with the passages. At each axial end of the rotor fluid exiting the rotor, is thrown outward onto the inner surfaces of the stator windings. The fluid returns to a common sump by gravity from the motor and transmission.

REFERENCES:
patent: 2451219 (1948-10-01), Holmgren
patent: 3648085 (1972-03-01), Fujii
patent: 3770074 (1973-11-01), Sherman
patent: 4130172 (1978-12-01), Moody
patent: 4284913 (1981-08-01), Barnhardt

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