Method for operating a drive train having a hydrodynamic clutch
US-2016264141-A1 · Sep 15, 2016 · US
Temperature warning device and temperature warning method of friction element
US9897202B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9897202-B2 |
| Application number | US-201414783445-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 12, 2014 |
| Priority date | Apr 10, 2013 |
| Publication date | Feb 20, 2018 |
| Grant date | Feb 20, 2018 |
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 temperature warning method of a friction element for issuing a warning depending on temperature of the friction element arranged between a power source and a driving wheel, includes issuing the warning when the temperature of the friction element exceeds an upper limit temperature, and making a period of time, from when the temperature of the friction element exceeds the upper limit temperature until when the warning is issued, longer when the temperature of the friction element exceeds the upper limit temperature for a first time than when the temperature of the friction element exceeds the upper limit temperature for a second or subsequent time.
First claim
Opening claim text (preview).
The invention claimed is: 1. A temperature warning device of a friction element for issuing a warning depending on temperature of the friction element arranged between a power source and a driving wheel, comprising: a warning issuing unit that issues the warning when the temperature of the friction element exceeds an upper limit temperature and a state in which the temperature of the friction element exceeds the upper limit temperature continues; and a warning issuing timing adjusting unit that makes a period of time, from when the temperature of the friction element exceeds the upper limit temperature until when the warning issuing unit issues the warning, longer when the temperature of the friction element exceeds the upper limit temperature for a first time and the state in which the temperature of the friction element exceeds the upper limit temperature continues, than when the temperature of the friction element exceeds the upper limit temperature for a second or subsequent time and the state in which the temperature of the friction element exceeds the upper limit temperature continues. 2. The temperature warning device of the friction element according to claim 1 , further comprising: a friction element temperature calculating and outputting unit that calculates the temperature of the friction element on the basis of an operation state of the friction element, and outputs a calculation value of the temperature of the friction element to the warning issuing unit, wherein the warning issuing timing adjusting unit is formed by the friction element temperature calculating and outputting unit outputting, for a predetermined period of time, a value lower than the upper limit temperature, instead of the calculation value of the temperature of the friction element, to the warning issuing unit, when the calculation value of the temperature of the friction element exceeds the upper limit temperature for a first time. 3. A temperature warning method of a friction element for issuing a warning depending on temperature of the friction element arranged between a power source and a driving wheel, comprising: issuing the warning when the temperature of the friction element exceeds an upper limit temperature and a state in which the temperature of the friction element exceeds the upper limit temperature continues; and making a period of time, from when the temperature of the friction element exceeds the upper limit temperature until when the warning is issued, longer when the temperature of the friction element exceeds the upper limit temperature for a first time and the state in which the temperature of the friction element exceeds the upper limit temperature continues, than when the temperature of the friction element exceeds the upper limit temperature for a second or subsequent time and the state in which the temperature of the friction element exceeds the upper limit temperature continues. 4. A temperature warning device of a friction element for issuing a warning depending on temperature of the friction element arranged between a power source and a driving wheel, comprising: warning issuing means for issuing the warning when the temperature of the friction element exceeds an upper limit temperature and a state in which the temperature of the friction element exceeds the upper limit temperature continues; and warning issuing timing adjusting means for making a period of time, from when the temperature of the friction element exceeds the upper limit temperature until when the warning issuing means issues the warning, longer when the temperature of the friction element exceeds the upper limit temperature for a first time and the state in which the temperature of the friction element exceeds the upper limit temperature continues, than when the temperature of the friction element exceeds the upper limit temperature for a second or subsequent time and the state in which the temperature of the friction element exceeds the upper limit temperature continues.
Assignees
Inventors
Classifications
Detection of an elapsed period of time · CPC title
Sensing or calculating temperature of oil in friction devices, e.g. wet clutches, to prevent overheating of friction linings · CPC title
- F16H59/72Primary
dependent on oil characteristics, e.g. temperature, viscosity · CPC title
Driver alarm · CPC title
Control by electric or electronic means, e.g. of fluid pressure · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9897202B2 cover?
- A temperature warning method of a friction element for issuing a warning depending on temperature of the friction element arranged between a power source and a driving wheel, includes issuing the warning when the temperature of the friction element exceeds an upper limit temperature, and making a period of time, from when the temperature of the friction element exceeds the upper limit temperatu…
- Who is the assignee on this patent?
- Nissan Motor
- What technology area does this patent fall under?
- Primary CPC classification F16H59/72. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 20 2018 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).