Passive selective catalytic reduction (SCR) system and method for low-temperature combustion (LTC) engine
Abstract
A combustion mode module is configured to switch operation of a low-temperature combustion (LTC) engine between a spark ignition (SI) mode, a positive valve overlap (PVO) mode, and a negative valve overlap (NVO) mode. A spark control module is configured to control a spark plug to generate a spark in a cylinder of the LTC engine when the LTC engine is operating in the SI mode. A valve control module is configured to control intake and exhaust valves of the cylinder to yield a PVO and a NVO when the LTC engine is operating in the PVO mode and the NVO mode, respectively. An air/fuel (A/F) control module is configured to adjust a desired A/F ratio of the LTC engine to a rich A/F ratio when operation of the LTC engine is switched to the PVO mode from either one of the SI mode and the NVO mode.
- Inventors:
- Issue Date:
- Research Org.:
- GM Global Technology Operations LLC, Detroit, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1986650
- Patent Number(s):
- 11459967
- Application Number:
- 17/176,277
- Assignee:
- GM Global Technology Operations LLC (Detroit, MI)
- DOE Contract Number:
- EE0007788
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 02/16/2021
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Yun, Hanho, and Kang, Jun-mo. Passive selective catalytic reduction (SCR) system and method for low-temperature combustion (LTC) engine. United States: N. p., 2022.
Web.
Yun, Hanho, & Kang, Jun-mo. Passive selective catalytic reduction (SCR) system and method for low-temperature combustion (LTC) engine. United States.
Yun, Hanho, and Kang, Jun-mo. Tue .
"Passive selective catalytic reduction (SCR) system and method for low-temperature combustion (LTC) engine". United States. https://www.osti.gov/servlets/purl/1986650.
@article{osti_1986650,
title = {Passive selective catalytic reduction (SCR) system and method for low-temperature combustion (LTC) engine},
author = {Yun, Hanho and Kang, Jun-mo},
abstractNote = {A combustion mode module is configured to switch operation of a low-temperature combustion (LTC) engine between a spark ignition (SI) mode, a positive valve overlap (PVO) mode, and a negative valve overlap (NVO) mode. A spark control module is configured to control a spark plug to generate a spark in a cylinder of the LTC engine when the LTC engine is operating in the SI mode. A valve control module is configured to control intake and exhaust valves of the cylinder to yield a PVO and a NVO when the LTC engine is operating in the PVO mode and the NVO mode, respectively. An air/fuel (A/F) control module is configured to adjust a desired A/F ratio of the LTC engine to a rich A/F ratio when operation of the LTC engine is switched to the PVO mode from either one of the SI mode and the NVO mode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {10}
}
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