Turbine engine gearbox
US-9222416-B2 · Dec 29, 2015 · US
Methods and systems for reducing gear lash noise
US8965616B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8965616-B2 |
| Application number | US-201313776351-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2013 |
| Priority date | May 4, 2012 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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- Title
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Abstract
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Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline gear lash gear tooth to gear tooth impact may be reduced via adjusting operation of an electric machine. For example, gear tooth to gear tooth impact may be reduced by operating the electric machine in a speed control mode to manage torque during driveline torque transition from a negative torque to a positive torque.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for controlling driveline lash, comprising: shifting a transmission to a gear that permits an electric machine that is coupled to the transmission to operate at a lower speed than a base speed of the electric machine in response to a decrease in a driver demand torque; and reducing gear tooth to gear tooth impact via operating the electric machine in a speed control mode during a driveline torque transition from a negative torque to a positi…
Assignees
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Classifications
- F16H57/0006Primary
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B60W20/17Primary
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US8965616B2 cover?
- Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline gear lash gear tooth to gear tooth impact may be reduced via adjusting operation of an electric machine. For example, gear tooth to gear tooth impact may be reduced by operating the electric machine in a speed control mode to manage torque during driveline torque transition from a negative t…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F16H57/0006. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 24 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).