US 12,441,297 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 Jun. 3, 2024, as Appl. No. 18/732,195.
Application 18/732,195 is a continuation of application No. 18/077,755, filed on Dec. 8, 2022, granted, now 11,999,341.
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 2024/0317210 A1, Sep. 26, 2024
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); F01N 9/00 (2006.01); F02D 41/00 (2006.01); F02D 41/02 (2006.01); F01N 3/025 (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); F01N 9/00 (2013.01); F02D 41/0087 (2013.01); F02D 41/024 (2013.01); B60W 2510/242 (2013.01); F01N 3/025 (2013.01); F01N 3/206 (2013.01); F01N 2240/14 (2013.01); F01N 2430/10 (2013.01); F01N 2590/11 (2013.01); F01N 2900/1602 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of operating a vehicle with a hybrid powertrain comprising an electrical drivetrain and an internal combustion engine, the method comprising:
detecting that a temperature of a selective catalytic reduction (SCR) device of an aftertreatment system of the vehicle is below a particular temperature;
directing the electrical drivetrain to fulfil a vehicle drive load; and
while the electrical drivetrain is fulfilling the vehicle drive load and the temperature of the SCR device is below the particular temperature,
operating the internal combustion engine to generate airflow for transport of heat through the aftertreatment system, and
after initiating operation of the internal combustion engine, directing an electric heater to raise a temperature for the heat transported by the airflow from the internal combustion engine through the SCR device of the aftertreatment system,
wherein all cylinders of the internal combustion engine are fueled while the electrical drivetrain is fulfilling the vehicle drive load and the internal combustion engine is operating to generate airflow to transport the heat, including by the temperature of the electric heater, into the aftertreatment system.