JPS54119107A - Wash-plate rotary-plunger type hydraulic system - Google Patents
Wash-plate rotary-plunger type hydraulic systemInfo
- Publication number
- JPS54119107A JPS54119107A JP2704078A JP2704078A JPS54119107A JP S54119107 A JPS54119107 A JP S54119107A JP 2704078 A JP2704078 A JP 2704078A JP 2704078 A JP2704078 A JP 2704078A JP S54119107 A JPS54119107 A JP S54119107A
- Authority
- JP
- Japan
- Prior art keywords
- hollow portion
- plunger
- throttle
- decrease
- working oil
- 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
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
PURPOSE: For preventing the decrease of efficiency, to reduce the pressure change of working oil in the hollow portion of a plunger by forming a throttle hole in the rear end portion of said plunger.
CONSTITUTION: If a throttle hole 11 is provided in the rear end portion of a plunger 4, working oil in a cylinder 2 is led to a lubricating oil reservoir 8 through said throttle hole 11, a hollow portion 4, a communicating hole 10 and a throttle hole 9, and between a shoe 6 and a swash plate 7 for lubrication. Therefore, said throttle valves 9 and 11 are not required to be reduced extremely in diameter since throttling is performed in two steps thereby. Consequently, the propability of the clog of said throttle valves 9 and 11 with dust, the inflow and outflow of working oil of said hollow portion 4, and air accumulation in said hollow portion 4 decrease. Further, even if air bubbles are generated, the influence of outside pressure change on said hollow portion 4 and the decrease in operational efficency of this hydrualic system are prevented.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2704078A JPS54119107A (en) | 1978-03-09 | 1978-03-09 | Wash-plate rotary-plunger type hydraulic system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2704078A JPS54119107A (en) | 1978-03-09 | 1978-03-09 | Wash-plate rotary-plunger type hydraulic system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54119107A true JPS54119107A (en) | 1979-09-14 |
Family
ID=12209943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2704078A Pending JPS54119107A (en) | 1978-03-09 | 1978-03-09 | Wash-plate rotary-plunger type hydraulic system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54119107A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS646375U (en) * | 1987-07-02 | 1989-01-13 |
-
1978
- 1978-03-09 JP JP2704078A patent/JPS54119107A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS646375U (en) * | 1987-07-02 | 1989-01-13 |
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