Title:
DISCHARGE RATE CONTROLLER OF VARIABLE DISPLACEMENT PUMP
Document Type and Number:
Japanese Patent JP3787063
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a device for negatively controlling a variable displacement pump of a split flow type obtaining two systems of discharge from one cylinder block.
SOLUTION: One cylinder block 2 from which a plurality of pistons 4 rising and setting is provided. A control plate 9 provided with two outlet ports 11, 12 for obtaining two discharges is brought into contact with and slides on an end face of the cylinder block 2. A discharge rate controllers 5 for controlling a discharge rate from the outlet ports by controlling a stroke of a piston is functionally controlled by a control piston 13 to which is exerted a pressure of fluid released through respective releasing circuits 18, 19 from respective outlet ports without work to a tank. The discharge rate controller 5 is provided with a low pressure selective valve 22 for selecting a lower pressure from pressures of fluids of the respective releasing circuits, and the selected low pressure by the low pressure selecting valve is exerted to the control piston.
Inventors:
Masayuki Narato
Application Number:
JP2000339379A
Publication Date:
June 21, 2006
Filing Date:
November 07, 2000
Export Citation:
Assignee:
Bosch Rexroth Corporation
International Classes:
F04B1/30; F04B49/00; F04B1/22; F04B1/32; (IPC1-7): F04B1/30; F04B1/32; F04B1/22; F04B49/00
Domestic Patent References:
| JP6117410A | ||||
| JP9042205A | ||||
| JP5032456U |
Attorney, Agent or Firm:
Kinichi Kitamura
Etsuo Machida
Etsuo Machida
Previous Patent: METHOD AND SYSTEM FOR MANAGING LOTTERY TICKET
Next Patent: LIGHTING SYSTEM FOR COMMODITIES DISPLAY RACK
Next Patent: LIGHTING SYSTEM FOR COMMODITIES DISPLAY RACK