JPS5770981A - Valiable displacement hydraulic pump - Google Patents
Valiable displacement hydraulic pumpInfo
- Publication number
- JPS5770981A JPS5770981A JP55147130A JP14713080A JPS5770981A JP S5770981 A JPS5770981 A JP S5770981A JP 55147130 A JP55147130 A JP 55147130A JP 14713080 A JP14713080 A JP 14713080A JP S5770981 A JPS5770981 A JP S5770981A
- Authority
- JP
- Japan
- Prior art keywords
- valves
- pump
- engine
- switchover
- tanks
- 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)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To prevent occurance of engine stop, by connecting the discharge conduit of a speed sensing pump to the pressurized chamber of a switch over valves, and by connecting the piston chamber of control valve units to tank T via switchover valves.
CONSTITUTION: The discharge conduit of a speed sensing pump P is connected to the pressurized chambers of switchover valves 9, and the piston chambers 6a of control valves 6 provided on the sides of push-pressing body of control valve units B are connected to tanks T by way of the switchover valves 9. Thus, when the driving torque of pump exceeds engine torque and the rotational speed of engine E drops less than a predetermined valve, the occurance of engine stop can be prevented in such a manner than the piston chambers 6a are released to the tanks T by switching the switchover valves 9, and the output of the pump elements A can be restrained by reducing the discharging amount in response to the discharging pressure.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55147130A JPS5770981A (en) | 1980-10-20 | 1980-10-20 | Valiable displacement hydraulic pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55147130A JPS5770981A (en) | 1980-10-20 | 1980-10-20 | Valiable displacement hydraulic pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5770981A true JPS5770981A (en) | 1982-05-01 |
Family
ID=15423232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55147130A Pending JPS5770981A (en) | 1980-10-20 | 1980-10-20 | Valiable displacement hydraulic pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5770981A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59115478A (en) * | 1982-12-16 | 1984-07-03 | アベックス・コ−ポレ−ション | Variable discharge quantity pump |
JPH033976A (en) * | 1989-05-30 | 1991-01-10 | Honda Motor Co Ltd | Hydraulic pump control device for vehicle |
JP2002202063A (en) * | 2000-12-28 | 2002-07-19 | Kayaba Ind Co Ltd | Swash plate type piston pump |
-
1980
- 1980-10-20 JP JP55147130A patent/JPS5770981A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59115478A (en) * | 1982-12-16 | 1984-07-03 | アベックス・コ−ポレ−ション | Variable discharge quantity pump |
JPH033976A (en) * | 1989-05-30 | 1991-01-10 | Honda Motor Co Ltd | Hydraulic pump control device for vehicle |
JP2002202063A (en) * | 2000-12-28 | 2002-07-19 | Kayaba Ind Co Ltd | Swash plate type piston pump |
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