Patent ID: 6692402
Filing Date: 2004-02-17
Classification: B60K,F16H,Y02T,Y10S,Y10T

Abstract:
A control apparatus for generating a hydraulic pressure for hydraulic control of an automatic transmission in a vehicle having a driving power source, the automatic transmission having a hydraulic controller which performs a shift change through engagement-disengagement of a plurality of friction engagement elements responsive to the hydraulic pressure, said control apparatus comprising:an electric oil pump; oil temperature detection means for detecting an oil temperature of oil supplied to the friction engagement elements of the hydraulic controller; electric oil pump drive control means for driving the electric oil pump based on the oil temperature detected by the oil temperature detection means, so that a hydraulic pressure required for the control of the automatic transmission is maintained; and a mechanical oil pump which is driven by the driving power source and which supplies at least a portion of the hydraulic pressure supplied to the hydraulic controller.