CN
Recondition & Calibration
Recondition & Calibration

FIVA / ELFI / HPS for MAN engine

Fuel Injection Valve Activation ：
control the fuel injection /exhaust valve action

Consult
  • FIVA / ELFI （MBD/NABTESCO/REXROTH）Maintenance & Calibration

    FIVA

    Overhaul Workshop in Shanghai and Singapore
    • Exchange Program
    • Pit Stop
    • Trouble Shooting
    • Routing Maintenance
    • On Board Overhaul

    Work Scope

    • Cleaning and inspection of the valve housing & main spool
    • Replacement of contrio valve and repair kit by original parts
    • Repalcement and calibration of the proportional valve & sensor
    • Function test
    • Issue the service report


    • FIVA-MBD

    FIVA- NABTESCO

    FIVA-REXROTH



  • HPS Pump（Rexroth/Paker/Eaton）Maintenance & Calibration

    Work Scope:

    • Cleaning and inspection
    • Replacement of repair kit by original parts
    • Repalcement / calibration of the proportional valve & sensor
    • Function test

    Test Bench:

    • Simulate engine running condition via proportional valve during testing
    • Carry out pump testing up to 750L/mins capacity
    • Calibrate proportional valve & inductive sensor and safety check
    • Graphic display
    • Issue the service report




Detail Data of Calibration and Function Test
Serial No #2 Type STW 0175-14/
New pilot valve None New position sensor None
Overhaul to check the electro-mechanical convertor and coil Ok
Control spool and bush is examined under a microscope Ok
Proportionalvalve on bench to testing Ok
Oil temperature Reference value 42 ºC±1 ºC Oil pressure Reference value 250±3bar
Measured value 42.04ºC Measured value 250.16bar
Flow rate Reference value 15±0.2L/min Zero adjustment Reference value 12.20±0.02mA
Measured value 15.08 L/min Measured value 12.20 mA
FIVA valve is function test, calibrate and internal leakage measurement 6.79 L/min
Output signal from inductive sensor in both extreme positions 5.30 mA / 19.16 mA
Output signal of default position (on loss of pilot valve command signal) 5.30 mA
Output signal stamped on the name plate (original) 12.24 mA
Output signal from new inductive sensor when calibration rod is mounted 12.20 mA
Result: Overhaul, Maintenance, Calibration, FIVA is in working condition, Function Testing is acceptable;


HPS Pump on test bench to simulated engine condition
Rotation □ R ☑L Oil cleanliness grade NAS NAS 7
Test Speed 900 RPM Max.displacement 500 cm3
Temperature 34℃ Test flow rate 450 L/min
Oil Pressure / （bar） 0 (25) 100 150 200 250 300 350
Flow / L/min） 450 441 434 426 416 404
Leakage %,/100bar 2.00% 2.37% 2.67% 3.02% 3.41%