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Method and apparatus to effect catalyst light-off in a multi-mode powertrain system
US8935027B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8935027-B2 |
| Application number | US-201213568029-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 6, 2012 |
| Priority date | Aug 6, 2012 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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A multi-mode vehicular powertrain system includes an internal combustion engine fluidly coupled to an exhaust aftertreatment system including a catalytic device and an electric machine electrically coupled to a battery. A method for effecting light-off of the catalytic device includes monitoring an output torque request for the powertrain system and determining a preferred engine operating point having a minimum engine operating cost within a predetermined engine operating region for catalyst light-off. When a state-of-charge of the battery is not approaching a predetermined state-of-charge limit, operation of the engine is controlled to the preferred engine operating point and operation of the electric machine is controlled to a machine operating point wherein the combination of engine torque at the preferred engine operating point and electric machine torque at the machine operating point satisfies the output torque request.
First claim
Opening claim text (preview).
The invention claimed is: 1. A control module implemented method for effecting light-off of a catalytic device in an exhaust aftertreatment system fluidly coupled to an internal combustion engine of a multi-mode vehicular powertrain system including an electric machine electrically coupled to a battery, the method comprising: monitoring a user interface and determining, by processor, an output torque request for the multi-mode vehicular powertrain system; determining, by a proce…
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Cross-Sectional Technologies · mapped topic
- B60W10/06Primary
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8935027B2 cover?
- A multi-mode vehicular powertrain system includes an internal combustion engine fluidly coupled to an exhaust aftertreatment system including a catalytic device and an electric machine electrically coupled to a battery. A method for effecting light-off of the catalytic device includes monitoring an output torque request for the powertrain system and determining a preferred engine operating poin…
- Who is the assignee on this patent?
- Heap Anthony H, Kim Kee Yong, Gm Global Tech Operations Inc
- What technology area does this patent fall under?
- Primary CPC classification B60W10/06. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).