US 12,325,301 B2
Hybrid industrial machine powertrain
Ryan Malloy, Milwaukee, WI (US); and Andrew Conaty, West Allis, WI (US)
Assigned to Twin Disc, Inc., Racine, WI (US)
Filed by Twin Disc, Inc., Racine, WI (US)
Filed on Apr. 11, 2023, as Appl. No. 18/133,057.
Claims priority of provisional application 63/329,610, filed on Apr. 11, 2022.
Prior Publication US 2023/0322075 A1, Oct. 12, 2023
Int. Cl. B60K 25/06 (2006.01); B60K 6/383 (2007.10); B60K 6/442 (2007.10); H02K 7/00 (2006.01); B60K 25/00 (2006.01)
CPC B60K 25/06 (2013.01) [B60K 6/383 (2013.01); B60K 6/442 (2013.01); H02K 7/006 (2013.01); B60K 2025/005 (2013.01); B60Y 2200/92 (2013.01); B60Y 2300/51 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A hybrid industrial machine powertrain of an industrial machine, comprising:
an IC (internal combustion) engine;
at least one electric motor;
a working system of the industrial machine configured to be powered by at least one of the IC engine and the at least one electric motor;
a PTI/PTO (power-take-in/power-take-off) system configured to transmit power from each of the IC engine and the at least one electric motor; and
wherein the PTI/PTO system is configured to passively couple or uncouple power transmission from the IC engine to the working system based on an operational state of the at least one electric motor;
at least one hydraulic pump configured to be powered by at least one of the IC engine and the at least one electric motor;
wherein the PTI/PTO system is configured to passively couple or uncouple power transmission from the IC engine to the at least one hydraulic pump based on the operational state of the at least one electric motor;
wherein the PTI/PTO system passively uncouples power transmission from the IC engine to the at least one hydraulic pump as a function of a rotational speed of the at least one electric motor;
a PTI/PTO gearbox with a geartrain that includes a main shaft and defines a tower with a tower lower section and a tower upper section;
a coupler that transmits power between the IC engine and the main shaft;
a one-way clutch arranged downstream of the IC engine and that interconnects the coupler and the main shaft;
wherein the one-way clutch accommodates an overrunning condition in which the at least one electric motor rotates at a greater speed than the IC engine; and
the at least one electric motor is defined by a pair of electric motors that are supported by the upper end of the tower upper section.