Method and apparatus for effecting light-off of a catalytic converter in a hybrid powertrain system
Abstract
A powertrain system includes a hybrid transmission and an internal combustion engine coupled to an exhaust aftertreatment device. A method for operating the powertrain system includes operating the hybrid transmission to generate tractive torque responsive to an operator torque request with the internal combustion engine in an engine-off state so long as the tractive torque is less than a threshold. The internal combustion engine is operated in an engine-on state at preferred operating conditions to effect light-off of the exhaust aftertreatment device and the hybrid transmission is coincidentally operated to generate tractive torque responsive to the operator torque request when the operator torque request exceeds the threshold. The internal combustion engine is then operated in the engine-on state to generate tractive torque responsive to the operator torque request.
- Inventors:
- Issue Date:
- Research Org.:
- GM Global Technology Operations LLC (Detroit, MI)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1086796
- Patent Number(s):
- 8475333
- Application Number:
- 13/101,341
- Assignee:
- GM Global Technology Operations LLC (Detroit, MI)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60W - CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60Y - INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- DOE Contract Number:
- FC26-08NT04386
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 33 ADVANCED PROPULSION SYSTEMS
Citation Formats
Roos, Bryan Nathaniel, and Spohn, Brian L. Method and apparatus for effecting light-off of a catalytic converter in a hybrid powertrain system. United States: N. p., 2013.
Web.
Roos, Bryan Nathaniel, & Spohn, Brian L. Method and apparatus for effecting light-off of a catalytic converter in a hybrid powertrain system. United States.
Roos, Bryan Nathaniel, and Spohn, Brian L. Tue .
"Method and apparatus for effecting light-off of a catalytic converter in a hybrid powertrain system". United States. https://www.osti.gov/servlets/purl/1086796.
@article{osti_1086796,
title = {Method and apparatus for effecting light-off of a catalytic converter in a hybrid powertrain system},
author = {Roos, Bryan Nathaniel and Spohn, Brian L},
abstractNote = {A powertrain system includes a hybrid transmission and an internal combustion engine coupled to an exhaust aftertreatment device. A method for operating the powertrain system includes operating the hybrid transmission to generate tractive torque responsive to an operator torque request with the internal combustion engine in an engine-off state so long as the tractive torque is less than a threshold. The internal combustion engine is operated in an engine-on state at preferred operating conditions to effect light-off of the exhaust aftertreatment device and the hybrid transmission is coincidentally operated to generate tractive torque responsive to the operator torque request when the operator torque request exceeds the threshold. The internal combustion engine is then operated in the engine-on state to generate tractive torque responsive to the operator torque request.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 02 00:00:00 EDT 2013},
month = {Tue Jul 02 00:00:00 EDT 2013}
}
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