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
| Íàïðÿæåíèå ïèòàíèÿ, Â |
îò 10 äî 32 |
| Çàäàâàåìûå ðåæèìû ðàáîòû äèçåëüíîãî äâèãàòåëÿ |
õîëîñòîé õîä, 75, 88 è 100% |
| Óïðàâëåíèå òîïëèâíûì íàñîñîì âûñîêîãî äàâëåíèÿ: |
|
- äèàïàçîí óãëà ïîâîðîòà âûõîäíîãî âàëà, ãðàä., íå ìåíåå
|
äî 95±5 |
- âðàùàþùèé ìîìåíò, Íì, íå ìåíåå
|
10 |
- âðåìÿ ïîâîðîòà âûõîäíîãî âàëà íà óãîë 90°, ñ, íå áîëåå
|
2 |
- ïîãðåøíîñòü óãëîâîãî ïåðåìåùåíèÿ, ãðàä., íå áîëåå
|
±1 |
| Ïîãðåøíîñòü èçìåðåíèÿ, íå áîëåå: |
|
- òåìïåðàòóðû ìàñëà â ãèäðîñèñòåìå, °C
|
±3 |
- òåìïåðàòóðû îõëàæäàþùåé æèäêîñòè, °C
|
±3 |
|
±0,1 |
- ÷àñòîòû âðàùåíèÿ êîëåí÷àòîãî âàëà äâèãàòåëÿ, % (ïðè 1000 îá/ìèí)
|
±2 |
| Òî÷íîñòü ñòàáèëèçàöèè âðàùåíèÿ êîëåí÷àòîãî âàëà äâèãàòåëÿ, % |
5 |
| Ñòåïåíü çàùèòû ïàíåëè óïðàâëåíèÿ îò âíåøíèõ âîçäåéñòâóþùèõ ôàêòîðîâ ïî ÃÎÑÒ 14254: |
IP40 |
| Äîïóñòèìûå âèáðàöèîííûå íàãðóçêè |
|
- ìàêñèìàëüíîå óñêîðåíèå, ì/ñ2
|
50 |
|
îò 50 äî 200 |
| Äîïóñòèìûå óäàðíûå íàãðóçêè, ì/ñ2, íå áîëåå |
100 |
| Ãàáàðèòíûå ðàçìåðû ïàíåëè óïðàâëåíèÿ, ìì, íå áîëåå: |
105 × 85 × 79 |
| Ìàññà ïàíåëè óïðàâëåíèÿ, êã, íå áîëåå: |
0,3 |