Patent ID: 6827165
Filing Date: 2004-12-07
Classification: B60K,B60W,F16H,Y02T,Y10S

Abstract:
An electro-mechanical powertrain including a transmission comprising:a fuel cell power source; battery means; an electronic control unit connected between said fuel cell power source and said battery means; a transmission output shaft; a first electric power transfer machine electrically connected with both said fuel cell power source and said battery means through said electronic control unit; a second electric power transfer machine electrically connected with both said fuel cell power source and said battery means through said electronic control unit; a power takeoff means for supplying power to operate accessories of said powertrain; a first planetary gearset having at least a first member continuously connected with said first electric power transfer machine, a second member continuously connected with said power takeoff means, and a third member continuously connected with said output shaft; a second planetary gearset having a first member continuously connected with said second electric power transfer machine, a second member continuously connected with said output shaft, and a third member; a first torque-transmitting mechanism for selectively connecting said third member of said second planetary gearset with a stationary member of the transmission; a second torque-transmitting mechanism for selectively connecting said third member of said second planetary gearset with said second electric power transfer machine; and a third torque-transmitting mechanism for selectively connecting said first electric power transfer machine with said output shaft to power said output shaft and said power takeoff means when said powertrain is changed from a first range to a second range of operation and said second electric power transfer machine is not transmitting power to said output shaft.