US 12,441,296 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)
Appl. No. 18/717,622
Filed by Eaton Intelligent Power Limited, Dublin (IE)
PCT Filed Dec. 8, 2022, PCT No. PCT/EP2022/025560
§ 371(c)(1), (2) Date Jun. 7, 2024,
PCT Pub. No. WO2023/104338, PCT Pub. Date Jun. 15, 2023.
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 2025/0043709 A1, Feb. 6, 2025
Int. Cl. B60W 20/16 (2016.01); B01D 53/94 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); F01N 3/025 (2006.01); F01N 3/20 (2006.01); F01N 9/00 (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); 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)] 19 Claims
OG exemplary drawing
 
1. A vehicle hybrid powertrain, comprising:
an internal combustion engine;
an electrical drivetrain;
a selective catalytic reduction (SCR) device, coupled to receive exhaust from the internal combustion engine;
a fuel burner; and
a control system that controls heat applied to the SCR device, including by controlling the fuel burner and the internal combustion engine, wherein the control system comprises:
a processor; and
a memory storing instructions that when executed by the processor, direct the control system to:
apply heat using a first temperature setpoint in an aftertreatment system, wherein the aftertreatment system comprises the SCR device;
while the heat is applied at the first temperature setpoint, receive temperature data from a temperature sensor proximate to the SCR device in the aftertreatment system;
determine from the temperature data that a first temperature is at a first threshold temperature which is less than the first temperature setpoint; and
after determining that the first temperature is at the first threshold temperature, apply heat using a second temperature setpoint which is less than the first temperature setpoint.
 
9. A vehicle hybrid powertrain, comprising:
an internal combustion engine;
an electrical drivetrain;
a selective catalytic reduction (SCR) device, coupled to receive exhaust from the internal combustion engine;
a fuel burner; and
a control system that controls heat applied to the SCR device, including by controlling the fuel burner and the internal combustion engine, wherein the control system comprises:
a processor; and
a memory storing instructions that when executed by the processor, direct the control system to:
apply heat to the SCR device using the fuel burner;
apply heat to the SCR device using the internal combustion engine in a thermal management mode; and
operate the internal combustion engine in idle to generate airflow from the internal combustion engine that transports the applied heat through the SCR device.