METHOD OF ESTIMATING ENGINE-OUT NOx MASS FLOW RATE
US-2015354428-A1 · Dec 10, 2015 · US
Abnormality determination device of fuel property sensor and method of determining abnormality of the same
US9851323B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9851323-B2 |
| Application number | US-201414889230-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 5, 2014 |
| Priority date | May 8, 2013 |
| Publication date | Dec 26, 2017 |
| Grant date | Dec 26, 2017 |
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 determination device is applied to an electrostatic capacitance type fuel property sensor that has a sensing section that senses an electrostatic capacitance of a fuel to be detected. The abnormality determination device of the fuel property sensor acquires a first output that is an output when a predetermined voltage is applied to the sensing section and a second output that is an output when a voltage is not applied to the sensing section. The acquired first output and second output are compared and whether or not the fuel property sensor is abnormal is determined.
First claim
Opening claim text (preview).
The invention claimed is: 1. An abnormality determination device of an electrostatic capacitance type fuel property sensor having a sensing section that senses an electrostatic capacitance of a fuel to be detected, comprising: a first acquisition section configured to acquire a first output that is an output of the fuel property sensor in a state where a predetermined voltage is applied to the sensing section; a second acquisition section configured to acquire a second output that is an output of the fuel property sensor in a state where a voltage is not applied to the sensing section; and a determination section configured to determine whether or not an abnormality of the fuel property sensor is present by comparing the first output and the second output. 2. The abnormality determination device of the fuel property sensor according to claim 1 , wherein the determination section determines that the fuel property sensor is abnormal when a difference between the first output and the second output is smaller than a first reference value. 3. The abnormality determination device of the fuel property sensor according to claim 1 , wherein the determination section further determines whether or not the fuel property sensor is abnormal by comparing the second output and a normal sensor output that corresponds to an output of the fuel property sensor when an electrostatic capacitance of the sensing section is zero. 4. The abnormality determination device of the fuel property sensor according to claim 3 , wherein the determination section determines that the fuel property sensor is abnormal when a difference between the second output and the normal sensor output that corresponds to an output of the fuel property sensor when the electrostatic capacitance of the sensing section is zero is larger than a second reference value.
Assignees
Inventors
Classifications
Fuels; Explosives · CPC title
Blends of gasoline and alcohols, e.g. E85 · CPC title
- F02D41/222Primary
relating to the failure of sensors or parameter detection devices · CPC title
Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures · CPC title
Fuel type, fuel composition or fuel quality · 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 US9851323B2 cover?
- An abnormality determination device is applied to an electrostatic capacitance type fuel property sensor that has a sensing section that senses an electrostatic capacitance of a fuel to be detected. The abnormality determination device of the fuel property sensor acquires a first output that is an output when a predetermined voltage is applied to the sensing section and a second output that is …
- Who is the assignee on this patent?
- Aoki Keiichiro, Wakao Kazuhiro, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02D41/222. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 26 2017 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).