Control apparatus and control method for automatic transmission
US-2015377349-A1 · Dec 31, 2015 · US
Control unit for synchronous engaging device
US9057440B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9057440-B2 |
| Application number | US-201313909250-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 4, 2013 |
| Priority date | Jun 27, 2012 |
| Publication date | Jun 16, 2015 |
| Grant date | Jun 16, 2015 |
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Abstract
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When a synchronizing sleeve that is driven by an actuator in response to gear shift request is stroked from a release position to an engagement position, a differential rotation speed between an input rotation and an output rotation is calculated at stroke positions after a synchronization completion position; and when the said differential rotation speed is equal to or more than a predetermined threshold value, a damage determination index is calculated based on the said differential rotation speed. Further, when a cumulative value of the damage determination index accumulated for each gear position becomes equal to or more than a predetermined threshold value, the engagement operation of the gear position corresponding to the said cumulative value is disabled. This makes it possible to effectively determine the degree of damage when a gear whine occurs to a synchronized engaging device.
First claim
Opening claim text (preview).
What is claimed is: 1. A control unit for synchronous engaging device, comprising: an input shaft of a transmission; one or more input gears on the input shaft to transmit rotation of the input shaft; an output shaft in parallel with the input shaft; one or more output gears on the output shaft to engage with each of the one or more input gears; a synchronous engaging device having a sleeve movable between an engaging position and a release position where said engaging pos…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9057440B2 cover?
- When a synchronizing sleeve that is driven by an actuator in response to gear shift request is stroked from a release position to an engagement position, a differential rotation speed between an input rotation and an output rotation is calculated at stroke positions after a synchronization completion position; and when the said differential rotation speed is equal to or more than a predetermine…
- Who is the assignee on this patent?
- Honda Motor Co Ltd, Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16H61/68. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 16 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).