US 11,999,341 B2
Aftertreatment heat up strategies in vehicles with hybrid powertrains
James E. McCarthy, Jr., Kalamazoo, MI (US); and Mihai Dorobantu, Mission Viejo, CA (US)
Assigned to EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on Dec. 8, 2022, as Appl. No. 18/077,755.
Claims priority of provisional application 63/288,594, filed on Dec. 11, 2021.
Claims priority of provisional application 63/287,498, filed on Dec. 8, 2021.
Claims priority of provisional application 63/287,487, filed on Dec. 8, 2021.
Claims priority of provisional application 63/287,156, filed on Dec. 8, 2021.
Prior Publication US 2023/0174050 A1, Jun. 8, 2023
Int. Cl. B60W 20/16 (2016.01); B01D 53/94 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); F01N 3/20 (2006.01); F02D 41/00 (2006.01); F02D 41/02 (2006.01)
CPC B60W 20/16 (2016.01) [B01D 53/9418 (2013.01); B01D 53/9431 (2013.01); B01D 53/9495 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); F01N 3/2013 (2013.01); F01N 3/2033 (2013.01); F01N 3/2066 (2013.01); F01N 3/208 (2013.01); F02D 41/0087 (2013.01); F02D 41/024 (2013.01); B60W 2510/242 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of heating an aftertreatment system, comprising:
while a selective catalytic reduction (SCR) device of the aftertreatment system is below a particular temperature, operating to spin an internal combustion engine of a vehicle hybrid powertrain of a vehicle with an electric drivetrain to generate airflow for transport of heat through the aftertreatment system; and
while operating to spin the internal combustion engine to generate airflow any time the SCR device of the aftertreatment system is below the particular temperature:
directly powering wheels of the vehicle by the electrical drivetrain of the vehicle instead of the internal combustion engine to fulfill a vehicle drive load;
directing a heat source to raise a temperature through the SCR device of the aftertreatment system; and
directing a second heat source to apply heat to the SCR device, wherein the second heat source is the internal combustion engine performing cylinder deactivation (CDA) while operating to spin the internal combustion engine.