US 12,485,774 B2
Drivetrain with infinitely and electrically variable transmission capabilities
Jeffrey M. David, Cedar Park, TX (US); Travis J. Miller, Austin, TX (US); and Mark A. Davis, Opelika, AL (US)
Assigned to DANA HEAVY VEHICLE SYSTEMS GROUP, LLC, Maumee, OH (US)
Filed by Dana Heavy Vehicle Systems Group, LLC, Maumee, OH (US)
Filed on Dec. 13, 2023, as Appl. No. 18/539,103.
Application 18/539,103 is a continuation of application No. 17/315,131, filed on May 7, 2021, granted, now 11,884,161.
Prior Publication US 2024/0109432 A1, Apr. 4, 2024
Int. Cl. B60L 15/20 (2006.01); B60K 17/12 (2006.01)
CPC B60L 15/2054 (2013.01) [B60K 17/12 (2013.01); B60L 15/2045 (2013.01); B60L 2240/12 (2013.01); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60Y 2400/73 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A drive train for a hybrid electric vehicle (HEV), comprising:
a four-node planetary gear set;
a first motor coupled to a first input node and a second motor coupled to a second input node of the four-node planetary gear set;
an engine coupled to a third input node of the four-node planetary gear set, the third input node positioned between the first input node and the second input node, wherein torque generated by each of the first motor, the second motor, and the engine is summed at an output node of the four-node planetary gear set, the output node positioned between the third input node and one of the first input node and the second input node, and wherein the first motor and the second motor are asymmetric; and
a controller with instructions stored therein to operate the second motor at a higher and wider speed and torque range than the first motor, and to operate in a mode that includes both a cruise sub-mode and a vehicle launch sub-mode achieved by inverting a speed and torque sign of the first motor.