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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.
— 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.
— 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.
— 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 аllows 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
| Supply voltage | 10 – 32 V DC |
| Supported diesel engine modes | idling, 75, 88 and 100% load |
| High-pressure fuel pump control: | |
|
0 – 95±5 ° |
|
10 Nm |
|
2 sec. |
|
±1 ° |
| Accuracy of measurement: | |
|
±3 °C |
|
±3 °C |
|
±0,1 bar |
|
±2 % |
| Accuracy of engine angular velocity stabilization | 5% |
| Vibration resistance | <50 m/sec2 (at 50…200 Hz) |
| Impact resistance | <100 m/sec2 |
| Control Panel: | |
|
105 × 85 × 79 mm |
|
IP40 |
|
0,3 kg |