SBUC Application Example Excavators

SBUC with load limiting control functions

SBUC controls loading of the excavator's diesel engine for:

— reduction of fuel consumption;
— power management between diesel motor and hydraulics;
— automatic protection of the diesel engine.

Functionality

— motor speed contol by management of fuel injection pump and productivity of hydraulic pumps;
— management of the fuel injection pump lever on controller commands;
— simplification of start and engine warming-up at a low ambient temperature;
— automatic switching in idle mode at pauses in excavator work;
— protection diesel motor from overload and overheating of engine coolant;
— protection excavator hydrosystem from overload and overheating of hydraulic fluid.

Example of a complete set of SBUC system for excavators

— SBUC SM4 controller;
— mode control panel;
— electromechanical actuator for management of diesel fuel injection pump (for diesel engines with mechanical fuel supply system);
— variable displacement pumps;
— hydraulic oil temparature sensor;
— two hyfraulic pressure transducers;
— set of cables.

The block schematic of SBUC for engines with mechanical fuel supply system

The modes of operation are set from the control panel, which is established in a excavator cabin.

The control panel contains the switch, which allows to disconnect or to choose the mode of operation with engine loading for 75%, 88%,100% and idling.

Control Panel

Values of parameters are set by the software and can be changed at the customer's request.

Technical Data

,  10  32
, 75, 88  100%
:  
  • , .,  
     95±5
    • , ,  
      10
      •   90°, ,  
        2
        • , .,  
          ±1
          ,  :  
          •  , °C
            ±3
            • , °C
              ±3
              • , .
                ±0,1
                • , % ( 1000 /)
                  ±2
                  , % 5
                      14254: IP40
                   
                  • , /2
                    50
                       50  200
                      , /2,   100
                      , ,  : 105 × 85 × 79
                      , ,  : 0,3


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