JPS5752695A - Fluid pressure pump - Google Patents
Fluid pressure pumpInfo
- Publication number
- JPS5752695A JPS5752695A JP12883080A JP12883080A JPS5752695A JP S5752695 A JPS5752695 A JP S5752695A JP 12883080 A JP12883080 A JP 12883080A JP 12883080 A JP12883080 A JP 12883080A JP S5752695 A JPS5752695 A JP S5752695A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- delivered
- pulsations
- pulsation
- gears
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
PURPOSE: To reduce pressure oil pulsation and noise by fixing each gear, fitted on the driving shaft of a gear pump having N number of multi-stages, with 360/N° of phase difference, respectively.
CONSTITUTION: Driving gears 7 and 10 as well as drive gears 9 and 12 are rotated by a rotating driving shaft 6, and the oil, flowed into a housing 3 from suction ports 1a and 2a, is delivered from delivery ports 1b and 2b after pressurized while circulating the outer circumferences of the gears. The oil, being delivered as much quantity as the number of teeth per revolution of the gear, generates the same cycle of pulsations. The delivered oil from No.1 chamber generates a pulsation A and the delivered oil from the No.2 chamber generates a pulsation B. However, because of a half pitch phase difference between the driving gears 7 and 10, the pulsations A and B are generatd with a half cycle difference. Furthermore, because the delivered oil is mixed at a common delivery port 15, both the pulsations A and B are combined and compesnated each other to produce a constant pressure C, resulting in the noise reduction caused by the pulsations.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12883080A JPS5752695A (en) | 1980-09-16 | 1980-09-16 | Fluid pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12883080A JPS5752695A (en) | 1980-09-16 | 1980-09-16 | Fluid pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5752695A true JPS5752695A (en) | 1982-03-29 |
Family
ID=14994454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12883080A Pending JPS5752695A (en) | 1980-09-16 | 1980-09-16 | Fluid pressure pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5752695A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63105289A (en) * | 1986-10-20 | 1988-05-10 | Saitama Kiki Kk | Hydraulic pump circuit for lubrication |
| JPS63105288A (en) * | 1986-10-20 | 1988-05-10 | Saitama Kiki Kk | Fluid pump circuit for vehicle |
| US5378130A (en) * | 1992-03-31 | 1995-01-03 | Shimadzu Corporation | Tandem type gear pump having an integral inner middle partition wall |
| KR100391440B1 (en) * | 2000-12-26 | 2003-07-12 | 현대자동차주식회사 | Apparatus of cancelling pulsation pressure for hydraulic pump |
| US6729855B2 (en) * | 2002-02-01 | 2004-05-04 | S & S Cycle, Inc. | Oil pump and gears |
| JP2009264109A (en) * | 2008-04-22 | 2009-11-12 | Fuji Heavy Ind Ltd | Work vehicle |
-
1980
- 1980-09-16 JP JP12883080A patent/JPS5752695A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63105289A (en) * | 1986-10-20 | 1988-05-10 | Saitama Kiki Kk | Hydraulic pump circuit for lubrication |
| JPS63105288A (en) * | 1986-10-20 | 1988-05-10 | Saitama Kiki Kk | Fluid pump circuit for vehicle |
| US5378130A (en) * | 1992-03-31 | 1995-01-03 | Shimadzu Corporation | Tandem type gear pump having an integral inner middle partition wall |
| KR100391440B1 (en) * | 2000-12-26 | 2003-07-12 | 현대자동차주식회사 | Apparatus of cancelling pulsation pressure for hydraulic pump |
| US6729855B2 (en) * | 2002-02-01 | 2004-05-04 | S & S Cycle, Inc. | Oil pump and gears |
| USRE42408E1 (en) * | 2002-02-01 | 2011-05-31 | S & S Cycle, Inc. | Oil pump and gears |
| JP2009264109A (en) * | 2008-04-22 | 2009-11-12 | Fuji Heavy Ind Ltd | Work vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2592476A (en) | Series arrangement of positive and nonpositive screw pumps | |
| JPS5752695A (en) | Fluid pressure pump | |
| GB1372482A (en) | Gear pump | |
| US3865523A (en) | Continuous flow rotary pump | |
| MY120206A (en) | Oil pump rotor | |
| JPS54161102A (en) | Rotary fluid pump | |
| US3802813A (en) | Fluid-displacement machines | |
| US4815954A (en) | Offset three-gear, two-system pump | |
| GB1464323A (en) | Rotary positive-displacement pump or motor | |
| GB1510962A (en) | Vacuum pumps | |
| GB996441A (en) | Gear pumps | |
| GB1149918A (en) | Gerotor gear sets | |
| GB1315103A (en) | Positive-displacement hydraulic pump | |
| GB1504380A (en) | Rotary fluid machine | |
| US4778361A (en) | Variable output gerotor pump | |
| JPS5720580A (en) | Gear pump | |
| JPS5540239A (en) | Gear pump or motor | |
| GB1461045A (en) | Gear pumps and motors | |
| JPS57129299A (en) | Double suction type pump | |
| JPS55104587A (en) | Pump | |
| ES425962A1 (en) | Improvements in gear pumps. (Machine-translation by Google Translate, not legally binding) | |
| GB1395434A (en) | Geartype pumps | |
| SU941676A1 (en) | Gear-type inner-engagement hydraulic machine | |
| GB2337303A (en) | High efficiency gear pump | |
| JPS5759089A (en) | Vane pump |