Power train controller and associated memory device
US-9216744-B2 · Dec 22, 2015 · US
Detection of an exhausting clutch in a neutral idle-equipped transmission
US8935066B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8935066-B2 |
| Application number | US-201213449825-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 18, 2012 |
| Priority date | Apr 18, 2012 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- 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 torque converter, a transmission, and a controller. The transmission has an input member connected to a turbine of the torque converter. The transmission includes a neutral idle (NI) state and a designated NI clutch actuated to enter the NI state. The controller calculates a reference slip error as a function of engine speed and turbine speed, detects when the designated NI clutch is exhausting while operating in the NI state as a function of the reference slip error, and executes a control action when the exhausting NI clutch is detected. A method includes measuring engine and turbine speed, calculating the reference slip error value as a function of the engine and turbine speeds, detecting when the designated NI clutch is exhausting while operating in the NI state using the reference slip error, and executing a control action when the exhausting NI clutch is detected.
First claim
Opening claim text (preview).
The invention claimed is: 1. A vehicle comprising: an engine having an output shaft; a torque converter having a pump and a turbine, wherein the pump is connected to the output shaft; a transmission having an input member that is connected to the turbine, wherein the transmission includes a plurality of operating states including a neutral idle (NI) state, and further includes a designated NI clutch that is selectively actuated to enter the NI state when the transmission is in…
Assignees
Inventors
Classifications
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F16H61/0204Primary
Mechanical Engineering · mapped topic
- F16H61/12Primary
Mechanical Engineering · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8935066B2 cover?
- A vehicle includes an engine, a torque converter, a transmission, and a controller. The transmission has an input member connected to a turbine of the torque converter. The transmission includes a neutral idle (NI) state and a designated NI clutch actuated to enter the NI state. The controller calculates a reference slip error as a function of engine speed and turbine speed, detects when the de…
- Who is the assignee on this patent?
- Lochocki Jr Ronald F, Sebastian Sindu, Kim Min K, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F16H61/0204. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 13 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).