Methods and Apparatus for Artificial Olfaction
US-2015362469-A1 · Dec 17, 2015 · US
Abnormality diagnosis apparatus for electric pump
US9239306B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9239306-B2 |
| Application number | US-201313787927-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 7, 2013 |
| Priority date | Mar 8, 2012 |
| Publication date | Jan 19, 2016 |
| Grant date | Jan 19, 2016 |
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.
An abnormality diagnosis apparatus for an electric pump prevents an erroneous decision that a normally functioning electric pump has an abnormality. When a motor is driven by a current of the driving motor using an upper limit current Iα before a predetermined time T 1 passes, it is decided that there is a probability that an abnormality occurs in the pump and the decision is reported to an external device when the number of rotations of the motor is less than the lower limit number of rotations set under lower limit temperature of a hydraulic oil. When the motor is driven by limiting the current of the motor by Iβ and Iγ (<Iα) after T 1 passes, it is decided that there is a probability of occurrence of an abnormality when rotation of the motor stops and the decision is reported to the external device.
First claim
Opening claim text (preview).
What is claimed is: 1. An abnormality diagnosis apparatus for an electric pump which supplies a working fluid based on a command from an external device, the abnormality diagnosis apparatus comprising: a rotation count detecting unit that detects a number of rotations of a motor which drives the electric pump; and a processing unit which decides in a first series of steps that there is a probability of occurrence of an abnormality in the electric pump when detecting a state in…
Assignees
Inventors
Classifications
Mechanical Engineering · mapped topic
- G01N27/00Primary
Physics · mapped topic
Mechanical Engineering · mapped topic
Electricity · mapped topic
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 US9239306B2 cover?
- An abnormality diagnosis apparatus for an electric pump prevents an erroneous decision that a normally functioning electric pump has an abnormality. When a motor is driven by a current of the driving motor using an upper limit current Iα before a predetermined time T 1 passes, it is decided that there is a probability that an abnormality occurs in the pump and the decision is reported to an ex…
- Who is the assignee on this patent?
- Hitachi Automotive Systems Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01N27/00. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 19 2016 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).