Hydraulic circuit for electric car drive train

Details Hydraulic circuit for electric car drive train Hydraulic circuit for electric car drive train

1995-09-27

1998-02-17

Johnson, Brian L.

Motor vehicles

Power

Electric

180 60, 310 54, 310 63, B60K 102

Patent

active

057183023

ABSTRACT:
A hydraulic circuit for an electric car drive train including a motor, a torque transmission device for transmitting the output torque of the motor to drive wheels, an oil pump for feeding the oil from an oil reservoir, a drive device for rotationally driving the oil pump and a discharge circuit for receiving oil discharged from the oil pump. A lubrication circuit connects to the discharge circuit, through a first throttle, to the torque transmission device. A cooling circuit connects to the discharge circuit through a second throttle and guides the flow of oil to the motor. A valve arranged between the discharge circuit, upstream of the first throttle, and the cooling circuit feeds the oil from the discharge circuit to the cooling circuit when the oil pressure of the discharge circuit exceeds a predetermined level. The oil flow fed to the lubrication circuit is kept constant even at a high speed rotation by the regulating action of the valve so that the oil flow feed to the cooling circuit increases with rise in rate of the motor speed.

REFERENCES:
patent: 4223569 (1980-09-01), Koivunen et al.
patent: 4418777 (1983-12-01), Stockton
patent: 5111090 (1992-05-01), Otake et al.
patent: 5127485 (1992-07-01), Wakuta et al.
patent: 5372213 (1994-12-01), Hasebe et al.
patent: 5517072 (1996-05-01), Hildebrandt

Affiliated with

Also associated with

Rating

Hydraulic circuit for electric car drive train does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic circuit for electric car drive train, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic circuit for electric car drive train will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1777544