Driving force distribution control apparatus
US-9561720-B2 · Feb 7, 2017 · US
Hydraulic control device for drive power distribution device
US10328797B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10328797-B2 |
| Application number | US-201615550431-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 16, 2016 |
| Priority date | Feb 17, 2015 |
| Publication date | Jun 25, 2019 |
| Grant date | Jun 25, 2019 |
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.
To provide a device to facilitate protection of a clutch while minimizing degradation of the torque transmission performance. A hydraulic clutch for drive power distribution is provided between a drive power source and auxiliary driving wheels, and a commanded torque is determined depending on the travel situation. The hydraulic pressure corresponding to the commanded torque is supplied to the hydraulic clutch. The surface temperature of the clutch is estimated (detected). The device generates a limiting value to limit the commanded torque when the difference in rotation between input and output shafts of the clutch is not less than a predetermined threshold and the commanded torque is not less than a predetermined value and performs control so as to increase the limiting value with an increase in the surface temperature of the clutch.
First claim
Opening claim text (preview).
The invention claimed is: 1. A hydraulic control device for a drive power distribution device of a vehicle, the vehicle including: a drive power transmission path to transmit drive power from a drive power source to a first driving wheel and a second driving wheel; a drive power distribution device including a hydraulically-driven multiple disc friction-type connector/disconnector provided between the drive power source and the second driving wheel in the drive power transmission path; and a temperature acquisition unit configured to acquire surface temperature of multiple discs of the connector/disconnector, the hydraulic control device comprising: a controller which acquires a required drive power transmission amount for the drive power distribution device and performs control to supply hydraulic pressure corresponding to the required drive power transmission amount to the connector/disconnector, wherein when the difference in rotation between the drive power source's side and the second driving wheel's side with respect to the connector/disconnector in the drive power transmission path is not less than a predetermined first threshold and the required drive power transmission amount is not less than a predetermined second threshold, the controller performs control so that the required drive power transmission amount is limited to a predetermined limiting value or less and so that the limiting value increases with an increase in the surface temperature of the multiple discs. 2. The hydraulic control device of a drive power distribution device according to claim 1 , wherein when the limiting value increases to a predetermined third threshold or higher, the controller performs control to stop the increase in the limiting value.
Assignees
Inventors
Classifications
for varying torque distribution between driven axles, e.g. by transfer clutch · CPC title
- B60K17/35Primary
including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches · CPC title
Vehicle speed · CPC title
by controlling transmissions or clutches · CPC title
4WD Clutch dividing power between the front and the rear axle · 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 US10328797B2 cover?
- To provide a device to facilitate protection of a clutch while minimizing degradation of the torque transmission performance. A hydraulic clutch for drive power distribution is provided between a drive power source and auxiliary driving wheels, and a commanded torque is determined depending on the travel situation. The hydraulic pressure corresponding to the commanded torque is supplied to the …
- Who is the assignee on this patent?
- Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60K17/35. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 25 2019 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).