Control apparatus for transmission
US-2015345634-A1 · Dec 3, 2015 · US
Fluid pressure control device for automatic transmission
US8974347B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8974347-B2 |
| Application number | US-201213534953-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 27, 2012 |
| Priority date | Jul 5, 2011 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A fluid pressure control device for an automatic transmission that transfers power from a motor via a friction engagement element, including: a first pump actuated by the power from the motor; a pressure regulator that regulates pressure of a working fluid pumped from the first pump; a first flow passage connected to an output port of the pressure regulator; a second flow passage connected to a fluid pressure chamber of the friction engagement element; a switcher that establishes and blocks connection between the first flow passage and the second flow passage; a second pump actuated by supply of electric power and capable of supplying the working fluid to the second flow passage with connection between the first flow passage and the second flow passage blocked by the switcher; and a pressure accumulator that accumulates pressure of the working fluid. The pressure accumulator is connected to the first flow passage.
First claim
Opening claim text (preview).
What is claimed is: 1. A fluid pressure control device for an automatic transmission that transfers power from a motor via a friction engagement element, comprising: a first pump actuated by the power from the motor; a regulator valve that regulates a pressure of a working fluid pumped from the first pump; a linear solenoid valve that (i) receives the regulated working fluid by the regulator valve, (ii) further adjusts a pressure of the received regulated working fluid and (ii…
Assignees
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Classifications
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F16H61/0025Primary
Mechanical Engineering · mapped topic
- F16H61/4096Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8974347B2 cover?
- A fluid pressure control device for an automatic transmission that transfers power from a motor via a friction engagement element, including: a first pump actuated by the power from the motor; a pressure regulator that regulates pressure of a working fluid pumped from the first pump; a first flow passage connected to an output port of the pressure regulator; a second flow passage connected to a…
- Who is the assignee on this patent?
- Shimizu Tetsuya, Tsuchida Kenichi, Nishio Satoshi, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification F16H61/0025. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 10 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).