Patent ID: 8764411
Filing Date: 2014-07-01
Classification: B60W,F02N,F04B,F16H,Y10T

Abstract:
1. A method for controlling an engine driving a transmission fluid pump, comprising, during an engine start from an automatic idle stop, adjusting a speed ratio between the transmission fluid pump and the engine via a variable gearbox, the speed ratio adjusted between a first speed ratio and a second speed ratio, the transmission fluid pump rotating faster relative to the engine at the first speed ratio as compared with the second speed ratio, the variable gearbox coupling the engine to the transmission fluid pump, the variable gearbox including a first gearset coupled to a second gearset along a first path via a one-way clutch, the first gearset further coupled to the second gearset along a second path, parallel to the first path, via an electric clutch.