公开(公告)号：US20250043709A1

公开(公告)日：2025-02-06

申请号：US18717622

申请日：2022-12-08

Applicant: Eaton Intelligent Power Limited

Inventor： James E. MCCARTHY, Jr. ,  Mihai DOROBANTU

IPC: F01N3/20 ,  F01N9/00

Abstract: A vehicle hybrid powertrain includes 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.

公开(公告)号：US20250043708A1

公开(公告)日：2025-02-06

申请号：US18717664

申请日：2022-12-08

Applicant: Eaton Intelligent Power Limited

Inventor： James E. MCCARTHY, Jr.

IPC: F01N3/20 ,  F01N9/00

Abstract: A method of controlling temperature of an engine aftertreatment system includes directing an electric heater in the engine aftertreatment system to apply heat using a first temperature setpoint; while applying the heat at the first temperature setpoint, receiving temperature data from a temperature sensor proximate to a selective catalytic reduction (SCR) device in the engine aftertreatment system; determining 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, directing the electric heater to apply heat using a second temperature setpoint which is less than the first temperature setpoint.

公开(公告)号：US20250059901A1

公开(公告)日：2025-02-20

申请号：US18717711

申请日：2022-12-08

Applicant: Eaton Intelligent Power Limited

Inventor： James E. MCCARTHY, Jr. ,  Bryan A. ZAVALA ,  Chris SHARP ,  Andrew MATHEAUS

IPC: F01N3/20

Abstract: A method of aftertreatment heat management involves heating a selective catalytic reduction (SCR) device of an aftertreatment system to a temperature of 225° C.+/−15° C. This temperature optimizes for both NOx reduction and NH; storage. A fuel burner or e-Heater can be used to heat the SCR to the desired temperature and, in some cases, increase the temperature to a target temperature of around 250° C. for a period of time to release excess NH3 from the SCR.