Discharge valve and associated device
US-2015369120-A1 · Dec 24, 2015 · US
Valve device
US10774795B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10774795-B2 |
| Application number | US-201616075266-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2016 |
| Priority date | Mar 9, 2016 |
| Publication date | Sep 15, 2020 |
| Grant date | Sep 15, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
In a valve device (1), when a valve (33) is closed, an output shaft of an actuator unit (10) is connected to the valve (33). A control unit of the valve device (1) determines a control constant to be a value by which a response speed of the actuator unit (10) is smaller as ambient temperature is higher, and performs feedback control.
First claim
Opening claim text (preview).
The invention claimed is: 1. A valve device comprising: an actuator that includes components fixed to each other; a valve to open and close a fluid passage by driving force of the actuator; a connector that connects an output shaft of the actuator and the valve; and a controller to control the actuator by feedback control, wherein the controller determines a control constant used in the feedback control to be a value by which current supplied to generate the driving force is smaller as ambient temperature is higher, and a width of a temperature section having a same control constant is narrower as temperature is higher, the temperature section being set in advance in a memory. 2. The valve device according to claim 1 , wherein the controller performs control including differential control as the feedback control and determines a differential constant used in the control to be a larger value as the ambient temperature is higher. 3. The valve device according to claim 1 , being a butterfly valve to open and close the fluid passage by rotating the valve. 4. The valve device according to claim 1 , being an exhaust gas recirculating valve. 5. The valve device according to claim 1 , wherein the controller is built in the actuator.
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Classifications
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EGR valve controlled by a temperature signal or an air/fuel ratio (lambda) signal · CPC title
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Frequently asked questions
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- What does patent US10774795B2 cover?
- In a valve device (1), when a valve (33) is closed, an output shaft of an actuator unit (10) is connected to the valve (33). A control unit of the valve device (1) determines a control constant to be a value by which a response speed of the actuator unit (10) is smaller as ambient temperature is higher, and performs feedback control.
- Who is the assignee on this patent?
- Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification F02M26/70. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Sep 15 2020 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).