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Method to reduce powertrain noise and vibration during engine start in hybrid vehicle
US9108620B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9108620-B2 |
| Application number | US-201213408127-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 29, 2012 |
| Priority date | Feb 29, 2012 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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A method of controlling a powertrain system of a hybrid vehicle includes detecting a request to start an engine, incrementally applying torque to the powertrain system, and biasing the torque against a static member of the powertrain system, such as a parking pawl of a transmission when the transmission is disposed in a parking position, to remove lash from the powertrain system prior to starting the engine.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of controlling a hybrid vehicle having an output of a transmission that is continuously connected in torque transmitting communication to an engine, the method comprising: detecting a request to start the engine; incrementally applying torque over a period of time to a powertrain system of the hybrid vehicle; and biasing the applied torque against a static member to gradually remove lash from the powertrain system prior to starting the eng…
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Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US9108620B2 cover?
- A method of controlling a powertrain system of a hybrid vehicle includes detecting a request to start an engine, incrementally applying torque to the powertrain system, and biasing the torque against a static member of the powertrain system, such as a parking pawl of a transmission when the transmission is disposed in a parking position, to remove lash from the powertrain system prior to starti…
- Who is the assignee on this patent?
- Lehmen Allen J, Chin Poh Fong, Grimmer Michael J, and 1 more
- 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 Aug 18 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).