HPV-02

Displacement size from 55 to 280 cc

VARIABLE PUMPS FOR CLOSED CIRCUIT OPERATION

Design characteristics

  • axial piston pump in swashplate design for high pressure closed loop systems
  • clockwise or counter clockwise rotation
  • exact and rugged servo control devices (mechanical, hydraulic, electro-hydraulic)
  • integrated high pressure relief valves with make-up function
  • integrated low pressure relief valves for boost, control and cooler circuits
  • replaceable cartridge filter
  • SAE high pressure ports
  • SAE mounting flange with ANSI or SAE spline shaft
  • through shaft SAE A, B, B-B and C
  • charge pressure pumps for internal and external suction, integrated cold start relief valve optional
  • optional tandem and multiple pumps

Control Options

  • power limiter
  • pressure cut-off

Controls

  • M1 mechanical lever
  • H1 hydraulic pilot
  • E1 electro-hydraulic
  • E2 electro-hydraulic with safety function
  • E5 electro-hydraulic, 3 postition
  • CA speed related hydraulic mechanical with torque-/power limitier

Technical Data

Controls

Machine control with instinctive feel

All the controls used in the Series 02 are based on a load-independent control mechanism. No matter which control is used: identical commands always call for the same response in the machine. The sensitive and precise machine control makes work easier and increases productivity. Various customer system options for mechanical, hydraulic and electric input solutions are available. Further special regulating features like torque control and pressure cut-off are also available. The reliable control of the pump can easily be integrated into any kind of vehicle management control system. The electronic input signals for dynamic driving behaviour control the pump independent of pump load condition.

E2 with switch-off function

Prompt response and steady flow are also characteristic for the E2 control with additional switch-off function. In this context the electronic control unit compares the travel command to other machine signals. In case of a system fault the electronic control unit will deactivate the “watchdog”-solenoid. Upon this the pump is brought to neutral under full control which ensures that the vehicle is brought to rest in a smooth jerk-free manner, without endangering the driver.

Product advantages of E2

  • – fulfils the high requirements of road traffic admission
  • – minimized susceptibility to interference
  • – with HMF-02: defined swashing back of pump for controlled deceleration and stop in case of system fault
  • – with HMV-02: diesel overspeed protection by fast swashing back of pump
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