US 12,448,909 B2
System and method to maintain hot aftertreatment at engine idle
James E. McCarthy, Jr., Kalamazoo, MI (US); Mihai Dorobantu, Mission Viejo, CA (US); Gary Neely, Boerne, TX (US); Andrew Matheaus, San Antonio, TX (US); and Viken Yeranosian, Farmington Hills, MI (US)
Assigned to EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on Aug. 2, 2024, as Appl. No. 18/792,986.
Application 18/792,986 is a continuation of application No. 17/486,889, filed on Sep. 27, 2021, granted, now 12,071,884.
Application 17/486,889 is a continuation in part of application No. PCT/EP2020/025146, filed on Mar. 25, 2020.
Claims priority of provisional application 63/170,914, filed on Apr. 5, 2021.
Claims priority of provisional application 63/170,931, filed on Apr. 5, 2021.
Claims priority of provisional application 63/170,925, filed on Apr. 5, 2021.
Claims priority of provisional application 63/112,528, filed on Nov. 11, 2020.
Claims priority of provisional application 62/886,537, filed on Aug. 14, 2019.
Claims priority of provisional application 62/823,584, filed on Mar. 25, 2019.
Prior Publication US 2024/0392713 A1, Nov. 28, 2024
Int. Cl. F01N 3/20 (2006.01); F01N 3/10 (2006.01); F02D 41/02 (2006.01)
CPC F01N 3/2013 (2013.01) [F01N 3/10 (2013.01); F01N 3/2066 (2013.01); F02D 41/024 (2013.01); F01N 2900/1602 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling temperature of exhaust aftertreatment, comprising:
applying a first power of 5 kW or less to an electric heater located upstream or within a selective catalytic reduction (SCR) device in an aftertreatment system to achieve a first temperature set-point of the electric heater;
detecting the first temperature set-point of the electric heater; and
after achieving the first temperature set-point, applying a second power to the electric heater, wherein the second power is a lower power than the first power.