PatentsDB

Upshift control of a dry dual-clutch transmission

US9140359B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9140359-B2
Application numberUS-201313906976-A
CountryUS
Kind codeB2
Filing dateMay 31, 2013
Priority dateJan 7, 2013
Publication dateSep 22, 2015
Grant dateSep 22, 2015

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

A vehicle includes an engine, a dry dual-clutch transmission (dDCT) having a pair of input clutches and a gearbox containing oddly- and evenly-numbered gear sets, and a transmission control module (TCM). Application of one of input clutches connects the engine to a corresponding one of the oddly- or evenly-numbered gear sets. The TCM includes feed-forward PID-based control logic, and a torque-to-position (TTP) table for each input clutch. The TCM commands a position of a designated input clutch during a power-on upshift using the feed-forward, PID-based control logic, and selectively adapts the TTP table as a function of an inertia and acceleration value of the engine. The TCM may apply an asymmetrical handoff profile to commanded oncoming and offgoing clutch torques during the torque phase of the upshift. The TCM may also adjust the TTP table as a function of the frequency of use of the input clutches.

First claim

Opening claim text (preview).

The invention claimed is: 1. A vehicle comprising: an internal combustion engine having an inertia value and an acceleration value; a dry dual-clutch transmission (dDCT) having a pair of non-lubricated input clutches and a lubricated gearbox that contains separate oddly-numbered and evenly-numbered gear sets, wherein an application of a designated one of the input clutches connects the engine to a corresponding one of the oddly-numbered or evenly-numbered gear sets; and a tran…

Assignees

Inventors

Classifications

Patent family

Related publications grouped by family.

View patent family 51061623

External sources

Next steps

Free tools are coming soon. Tell us what you want to track and we'll notify you.

Get alerts for this patentView on Google Patents

Request deeper analysis

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US9140359B2 cover?
A vehicle includes an engine, a dry dual-clutch transmission (dDCT) having a pair of input clutches and a gearbox containing oddly- and evenly-numbered gear sets, and a transmission control module (TCM). Application of one of input clutches connects the engine to a corresponding one of the oddly- or evenly-numbered gear sets. The TCM includes feed-forward PID-based control logic, and a torque-t…
Who is the assignee on this patent?
Gm Global Tech Operations Inc
What technology area does this patent fall under?
Primary CPC classification F16H61/688. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Sep 22 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).