US 11,833,902 B2
Waste heat recovery hybrid power drive
Manik Narula, Columbus, IN (US); Timothy C. Ernst, Columbus, IN (US); Michael J. Ruth, Franklin, IN (US); Jonathan A. Dickson, Columbus, IN (US); J. Steven Kolhouse, Columbus, IN (US); and Nimish Bagayatkar, Carmel, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Appl. No. 16/976,213
Filed by CUMMINS INC., Columbus, IN (US)
PCT Filed Feb. 27, 2019, PCT No. PCT/US2019/019761
§ 371(c)(1), (2) Date Aug. 27, 2020,
PCT Pub. No. WO2019/168927, PCT Pub. Date Sep. 6, 2019.
Claims priority of provisional application 62/637,107, filed on Mar. 1, 2018.
Prior Publication US 2021/0001703 A1, Jan. 7, 2021
Int. Cl. B60K 6/32 (2007.10); B60K 6/46 (2007.10); F02G 5/00 (2006.01)
CPC B60K 6/32 (2013.01) [B60K 6/46 (2013.01); F02G 5/00 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A vehicle system, comprising:
an engine;
a transmission coupled to the engine;
a differential coupled to the transmission; and
a waste heat recovery (WHR) hybrid power drive system, comprising:
a WHR power unit structured to convert thermal energy into rotation of a WHR drive shaft,
a motor/generator structured to selectively operate as a motor or a generator, the motor/generator having a motor/generator drive shaft, and
a mechanical linkage coupled to the WHR drive shaft, the motor generator drive shaft, and an output shaft, structured to selectively link the output shaft to one of the WHR drive shaft and the motor/generator drive shaft independently of the other of the WHR drive shaft and the motor/generator drive shaft;
wherein the output shaft is coupled to at least one of a shaft of the engine, a shaft of the transmission, or a shaft of the differential.