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Hybrid thermal system with device-specific control logic
US8948946B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8948946-B2 |
| Application number | US-201213688297-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 29, 2012 |
| Priority date | Nov 29, 2012 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A thermal system includes fluid-cooled devices, a controller, and a thermal loop or loops each having a cooling actuator and fluid passages. The controller executes device-specific control logic to arbitrate between cooling requests having different relative priorities. The controller receives raw speed requests and noise, vibration, and harshness (NVH) limits for each device, and processes the raw speed requests and NVH limits to determine a relative cooling priority for each device. The controller outputs a speed command to the actuator(s) for each thermal loop in order to cool the devices at a level required by the device having the highest relative cooling priority. A vehicle includes a traction motor, a transmission that is selectively connected to the traction motor, fluid-cooled devices each in electrical communication with the motor, and a controller configured to execute the arbitration method noted above.
First claim
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The invention claimed is: 1. A hybrid thermal system comprising: a plurality of fluid-cooled devices; a thermal loop having: a cooling actuator configured to circulate a cooling fluid to the fluid-cooled devices; and a fluid passage that connects the cooling actuator to the fluid-cooled devices, and that conducts the cooling fluid to and from the fluid-cooled devices; and a controller in communication with the fluid-cooled devices and with the cooling actuator, and having…
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Frequently asked questions
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- What does patent US8948946B2 cover?
- A thermal system includes fluid-cooled devices, a controller, and a thermal loop or loops each having a cooling actuator and fluid passages. The controller executes device-specific control logic to arbitrate between cooling requests having different relative priorities. The controller receives raw speed requests and noise, vibration, and harshness (NVH) limits for each device, and processes the…
- Who is the assignee on this patent?
- Gm Global Tech Operations Inc
- What technology area does this patent fall under?
- Primary CPC classification F28F27/00. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 03 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).