Technical features
Fuel system
Adopts Bosch high-pressure common rail fuel injection system (BOSCH Common Rail Injection), with a maximum pressure of 1600bar, supporting precise injection quantity control and multi-stage injection.
Core components: ECU electronic control unit, high-pressure pump, common rail pipe, multi-hole fuel injector.
Performance parameters
Displacement: 7,640CC, cylinder diameter × stroke is 111mm × 135mm.
Power: 250.1 kW (about 335 horsepower), maximum torque 1450N·m (SAEJ1349 standard).
Emission standards: Meet Euro III and above, adapt to exhaust gas recirculation (EGR) and intercooling technology.
Control system
ECU integrates engine diagnostic function, monitors rail pressure, injection timing and sensor signals, and is compatible with SCAN-200 diagnostic tool for fault code reading.
Application fields
Construction machinery: Suitable for Doosan DX60-9C, DX300LC-9C and other excavator models.
Commercial vehicles: Used for Guilin Daewoo GDW6902C buses, Dongfeng DHZ6121KR4 chassis, etc., suitable for long-distance transportation and urban public transportation scenarios.
Maintenance requirements
The fuel filter needs to be replaced regularly and the water in the oil-water separator needs to be drained to prevent fuel contamination from clogging the metering valve.
After overhaul, a special calibration bench needs to be used to calibrate the ECU and engine matching parameters.
