US 12,330,657 B2
Hybrid vehicle drive system and method for fuel reduction during idle
Joseph T. Dalum, Delafield, WI (US)
Assigned to Power Technology Holdings LLC, Pewaukee, WI (US)
Filed by Power Technology Holdings LLC, Pewaukee, WI (US)
Filed on Jan. 10, 2022, as Appl. No. 17/572,435.
Application 17/572,435 is a continuation in part of application No. 15/588,532, filed on May 5, 2017, granted, now 11,225,240.
Application 17/572,435 is a continuation in part of application No. 15/067,419, filed on Mar. 11, 2016, granted, now 10,071,647.
Application 15/588,532 is a continuation of application No. 14/745,232, filed on Jun. 19, 2015, granted, now 9,643,593.
Application 14/745,232 is a continuation of application No. 14/081,892, filed on Nov. 15, 2013, granted, now 9,061,680.
Application 14/081,892 is a continuation in part of application No. PCT/US2013/036431, filed on Apr. 12, 2013.
Application 15/067,419 is a continuation of application No. 13/812,723, granted, now 9,283,954, previously published as PCT/US2012/029835, filed on Mar. 20, 2012.
Claims priority of provisional application 61/624,118, filed on Apr. 13, 2012.
Claims priority of provisional application 61/566,526, filed on Dec. 2, 2011.
Prior Publication US 2022/0153138 A1, May 19, 2022
Int. Cl. B60K 17/28 (2006.01); B60K 25/06 (2006.01); B60L 58/12 (2019.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 20/15 (2016.01); B60W 20/16 (2016.01); B60W 30/18 (2012.01); B60W 30/188 (2012.01); B60K 25/00 (2006.01)
CPC B60W 30/1888 (2013.01) [B60K 25/06 (2013.01); B60L 58/12 (2019.02); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 20/15 (2016.01); B60W 20/16 (2016.01); B60W 30/18054 (2013.01); B60K 2025/005 (2013.01); B60W 2510/244 (2013.01); B60W 2510/305 (2013.01); B60W 2520/04 (2013.01); B60W 2710/0666 (2013.01); B60W 2710/0694 (2013.01); B60W 2710/083 (2013.01); B60Y 2200/41 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle drive system for a vehicle comprising a first prime mover, a power take off and a first prime mover driven transmission in mechanical communication with the power take off, the vehicle drive system comprising:
an electric motor in direct or indirect mechanical communication with the first prime mover via the power take off; and
a control system configured to cause the electric motor to rotate the first prime mover via the power take off, wherein the control system operates on a balanced mode where the control system determines a torque for the electric motor based upon driver inputs, determines total torque needed to move the vehicle, and subtracts out an amount provided by the electric motor to obtain a first prime mover torque, wherein the control system causes the first prime mover to provide prime mover torque, wherein a flow of transmission fluid is provided while the first prime mover is not consuming fuel and the vehicle is stationary, wherein the transmission fluid is provided by a transmission fluid pump through the power-take-off via operation of the first prime mover powered by the power take off driven by the electric motor, and wherein the flow of the transmission fluid through the power-take-off is increased by an additional pump when the electric motor rotates.