Patent ID: 6805647
Filing Date: 2004-10-19
Classification: B60K,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
A transmission for a hybrid electric vehicle comprising:an input shaft with a main transmission fluid pump drivingly connected thereto; an electronically controlled hydraulic shift system; a low-reverse clutch and a forward clutch connected to the hydraulic shift system; an electronically driven fluid pump having a fluid output; and a pressure transducer operatively engaging the fluid output; a controller in communication with the pressure transducer, and a solid state relay electronically connected to and drivable by the controller, and with the electronically driven pump electronically connected to and drivable by the solid state relay; a shut down shuttle valve operatively engaging the electrically driven fluid pump, the low/reverse clutch and the forward clutch and switchable to selectively engage and disengage the electronically driven pump from the hydraulic shift system.