Fluid systems for machines with integrated energy recovery circuit
US-2017241445-A1 · Aug 24, 2017 · US
Hydraulic driven fan system
US2016245149A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016245149-A1 |
| Application number | US-201615143208-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 29, 2016 |
| Priority date | Apr 29, 2016 |
| Publication date | Aug 25, 2016 |
| Grant date | — |
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- Title
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- Abstract
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A hydraulic driven fan system includes at least one first fan motor and a second fan motor connected in series with each other. The system also includes a fixed displacement pump configured to supply a pressurized flow of a hydraulic fluid to the at least one first and second fan motors. The system includes a proportional flow control valve in fluid communication with the at least one first fan motor and configured to allow a regulated amount of the pressurized flow of the hydraulic fluid there through to the corresponding at least one first fan motor. The system includes a pressure compensator disposed parallel to the proportional flow control valve and configured to maintain a pressure difference across the proportional flow control valve. The system further includes a proportional pressure relief valve disposed parallel to the second fan motor and configured to control a pressure difference across the second fan motor.
First claim
Opening claim text (preview).
What is claimed is: 1 . A hydraulic driven fan system comprising: at least one first fan motor; a second fan motor connected in series with the at least one first fan motor; a fixed displacement pump configured to supply a pressurized flow of a hydraulic fluid to each of the at least one first fan motor and the second fan motor; a pressure compensating unit for each of the at least one first fan motor, the pressure compensating unit including: a proportional flow control valve in fluid communication with the at least one first fan motor, the proportional flow control valve configured to allow a regulated amount of the pressurized flow of the hydraulic fluid there through to the corresponding at least one first fan motor; and a pressure compensator disposed parallel to the proportional flow control valve, the pressure compensator configured to maintain a pressure difference across the proportional flow control valve; and a proportional pressure relief valve disposed parallel to the second fan motor, the proportional pressure relief valve configured to control a pressure difference across the second fan motor.
Assignees
Inventors
Classifications
Selectively controlling multiple pumps or motors, e.g. switching between series or parallel · CPC title
by controlling pump output or bypass, other than to maintain constant speed · CPC title
by means in the feed line {, i.e. "meter in"}(F15B11/046, F15B11/05 take precedence) · CPC title
using two or more air pumps · CPC title
- F01P7/044Primary
using hydraulic drives · CPC title
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Frequently asked questions
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- What does patent US2016245149A1 cover?
- A hydraulic driven fan system includes at least one first fan motor and a second fan motor connected in series with each other. The system also includes a fixed displacement pump configured to supply a pressurized flow of a hydraulic fluid to the at least one first and second fan motors. The system includes a proportional flow control valve in fluid communication with the at least one first fan…
- Who is the assignee on this patent?
- Caterpillar Inc
- What technology area does this patent fall under?
- Primary CPC classification F01P7/044. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Aug 25 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).