Catalyst temperature maintenance systems and methods
Abstract
A catalyst temperature control system of a vehicle includes a fuel control module configured to control fuel injection based on a target air/fuel ratio that is fuel lean relative to a stoichiometric air/fuel ratio and a target fuel injection start timing. An exhaust gas recirculation (EGR) control module is configured to control an EGR valve based on a target EGR opening. An adjustment module is configured to, when a temperature of a catalyst in an exhaust system is less than a sum of a predetermined light-out temperature of the catalyst and a predetermined temperature and the target air/fuel ratio is fuel lean relative to the stoichiometric air/fuel ratio, based on a comparison of an engine speed and a predetermined engine speed, selectively adjust at least one of: a target throttle opening, a target spark timing, the target fuel injection start timing, the target air/fuel ratio, and the target EGR opening.
- Inventors:
- Issue Date:
- Research Org.:
- GM Global Technology Operations LLC, Detroit, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1600444
- Patent Number(s):
- 10519883
- Application Number:
- 15/995,579
- Assignee:
- GM Global Technology Operations LLC (Detroit, MI)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
- DOE Contract Number:
- EE0006853
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 06/01/2018
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Solomon, Arun S., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., and Sczomak, David P. Catalyst temperature maintenance systems and methods. United States: N. p., 2019.
Web.
Solomon, Arun S., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., & Sczomak, David P. Catalyst temperature maintenance systems and methods. United States.
Solomon, Arun S., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., and Sczomak, David P. Tue .
"Catalyst temperature maintenance systems and methods". United States. https://www.osti.gov/servlets/purl/1600444.
@article{osti_1600444,
title = {Catalyst temperature maintenance systems and methods},
author = {Solomon, Arun S. and Narayanaswamy, Kushal and Szekely, Jr., Gerald A. and Sczomak, David P.},
abstractNote = {A catalyst temperature control system of a vehicle includes a fuel control module configured to control fuel injection based on a target air/fuel ratio that is fuel lean relative to a stoichiometric air/fuel ratio and a target fuel injection start timing. An exhaust gas recirculation (EGR) control module is configured to control an EGR valve based on a target EGR opening. An adjustment module is configured to, when a temperature of a catalyst in an exhaust system is less than a sum of a predetermined light-out temperature of the catalyst and a predetermined temperature and the target air/fuel ratio is fuel lean relative to the stoichiometric air/fuel ratio, based on a comparison of an engine speed and a predetermined engine speed, selectively adjust at least one of: a target throttle opening, a target spark timing, the target fuel injection start timing, the target air/fuel ratio, and the target EGR opening.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {12}
}