JPS56156482A - Input limiting method and device for hydraulic device driven by engine - Google Patents
Input limiting method and device for hydraulic device driven by engineInfo
- Publication number
- JPS56156482A JPS56156482A JP5837580A JP5837580A JPS56156482A JP S56156482 A JPS56156482 A JP S56156482A JP 5837580 A JP5837580 A JP 5837580A JP 5837580 A JP5837580 A JP 5837580A JP S56156482 A JPS56156482 A JP S56156482A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- control
- rotation
- accordance
- pump
- 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.)
- Granted
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To improve the work efficiency and to utilize the energy effectively, by controlling the delivery of pump from the differential rotation of an engine and the flow through a center bypath of a directional control valve.
CONSTITUTION: The difference of rotation between an output signal from a throttle lever 13 and an output signal from a rotation detector 25 is obtained by an adder 15, then an actuator 22 is controlled in accordance with said difference to control the fuel injection of a fuel injection pump 19 thus to control the rotation of the engine 1. The pressures at the upstream of throttles 26, 27 provided in the center bypath circuit of a directional exchange valve are detected by pressure detectors 28, 29 to control the regulators 5, 6 in accordance with said detected level thus to control the deliveries of hydraulic pumps 4, 5. Since the output from the engine can be automatically distributed in accordance with the load of each hydraulic pump, the work efficiency is improved and the energy can be utilized effectively.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5837580A JPS56156482A (en) | 1980-05-01 | 1980-05-01 | Input limiting method and device for hydraulic device driven by engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5837580A JPS56156482A (en) | 1980-05-01 | 1980-05-01 | Input limiting method and device for hydraulic device driven by engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56156482A true JPS56156482A (en) | 1981-12-03 |
| JPH0125921B2 JPH0125921B2 (en) | 1989-05-19 |
Family
ID=13082573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5837580A Granted JPS56156482A (en) | 1980-05-01 | 1980-05-01 | Input limiting method and device for hydraulic device driven by engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56156482A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029901U (en) * | 1983-08-06 | 1985-02-28 | 東芝機械株式会社 | hydraulic circuit |
| JP2015017662A (en) * | 2013-07-11 | 2015-01-29 | 川崎重工業株式会社 | Cavitation prevention device for construction machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0533958B1 (en) * | 1991-04-12 | 1997-07-09 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive system for a construction machine |
-
1980
- 1980-05-01 JP JP5837580A patent/JPS56156482A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029901U (en) * | 1983-08-06 | 1985-02-28 | 東芝機械株式会社 | hydraulic circuit |
| JP2015017662A (en) * | 2013-07-11 | 2015-01-29 | 川崎重工業株式会社 | Cavitation prevention device for construction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0125921B2 (en) | 1989-05-19 |
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