Hydraulic brake system
US-12036968-B2 · Jul 16, 2024 · US
Hydraulic-pressure producing device and hydraulic brake system
US9566971B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9566971-B2 |
| Application number | US-201114125752-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 25, 2011 |
| Priority date | Jun 13, 2011 |
| Publication date | Feb 14, 2017 |
| Grant date | Feb 14, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
In a hydraulic brake system including a cylinder device that includes a front chamber and a rear chamber located on front and rear sides of a pressurizing piston, respectively, presence or absence of liquid leakage from a brake line is detected based on a hydraulic pressure in the rear chamber. Where a state in which a subtraction value obtained by subtracting an actual rear hydraulic pressure from a target rear hydraulic pressure is larger than a first malfunction determination threshold value has continued for a time not shorter than a first malfunction determination time, and then an increase of the actual rear hydraulic pressure at a rate not lower than a set rate has caused the subtraction value to become smaller than a return determination threshold value, it is determined that the pressurizing piston has been bottomed due to liquid leakage from the front chamber.
First claim
Opening claim text (preview).
The invention claimed is: 1. A hydraulic brake system comprising: a cylinder device provided in a vehicle and comprising (a) a housing, (b) at least one pressurizing piston fluid-tightly and slidably fitted in the housing, (c) at least one front chamber respectively provided in front of the at least one pressurizing piston, and (d) a rear-force control device operable by a supply of electric power and capable of controlling a rear force that is a driving force applied from a rear…
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Classifications
- B60T13/146Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B60T17/22Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9566971B2 cover?
- In a hydraulic brake system including a cylinder device that includes a front chamber and a rear chamber located on front and rear sides of a pressurizing piston, respectively, presence or absence of liquid leakage from a brake line is detected based on a hydraulic pressure in the rear chamber. Where a state in which a subtraction value obtained by subtracting an actual rear hydraulic pressure …
- Who is the assignee on this patent?
- Okano Takahiro, Kamiya Yusuke, Uchida Kiyoyuki, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification B60T13/146. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 14 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).