Patent ID: 6986283
Filing Date: 2006-01-17
Classification: F01M,F16H

Abstract:
1. A method of exchanging fluid in a transmission system, comprising: providing a fluid supply; connecting a fluid supply line from the fluid supply to the transmission system; coupling a first check valve to the supply line to regulate a direction of fluid flow through the supply line; coupling a proportional flow control solenoid to the supply line to adjust fluid flow through the supply line; pressurizing the fluid supply to create a fluid flow into the transmission system through the fluid supply line; measuring a first fluid flow rate prior to the fluid flow entering the transmission system; measuring a second fluid flow rate after the fluid leaves said transmission system; comparing the first and second fluid flow rates to find a difference between the first and second flow rates; determining whether the difference between the first and second fluid flow rates exceeds a predetermined value; and adjusting the first fluid flow rate if the difference exceeds the predetermined value.