Shandong Shengyue Technology Development Co.,Ltd is one of the most professional dongfeng cummins 6bt5.9 series 5.9l inline-6 diesel engine with horizontal muffler 3971045 manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
Dongfeng Cummins 6BT5.9 Series 5.9L Inline-6 Diesel Engine with Horizontal Muffler 3971045
Base Mechanical Specifications
| Parameter Item | Technical Specifications | Remarks / Explanations |
|---|---|---|
| Engine Model | 6BT5.9-G1 / G2 / M | "G" stands for Generator-drive configuration |
| Type | In-line, 4-stroke, water-cooled | Classic 6-cylinder industrial design |
| Displacement | 5.9 L (5890 cc) | Optimised power-to-fuel efficiency ratio |
| Bore × Stroke | 102 mm × 120 mm | Long-stroke design delivering superior low-end torque |
| Compression Ratio | 17.5 : 1 | High compression for reliable cold starts & thermal efficiency |
| Firing Order | 1 - 5 - 3 - 6 - 2 - 4 | Standard 6-cylinder inline firing sequence |
| Rotation Direction | Counter-clockwise (facing flywheel) | Standard industrial rotation direction |
| Net Weight (Dry) | Approx. 410 kg - 440 kg | Excludes radiator, cooling fan, and fluids |
Power & Output Performance
| Parameter Item | 50Hz (1500 rpm) Spec | 60Hz (1800 rpm) Spec | Description |
|---|---|---|---|
| Prime Power | 80 kW (109 hp) | 90 kW (122 hp) | Continuous load profile (10% overload allowed for 1h/12h) |
| Standby Power | 88 kW (120 hp) | 100 kW (136 hp) | Emergency power backup limit, no overload allowed |
| BMEP | 1100 - 1200 kPa | 1150 - 1250 kPa | Brake Mean Effective Pressure inside cylinders |
| Mean Piston Speed | 6.0 m/s | 7.2 m/s | Low speed ensures reduced wear and long TBO |
| Idle Speed | 750 - 850 rpm | 750 - 850 rpm | Lowest stable engine speed under zero load |
Air, Fuel & Governing Systems
| Parameter Item | Technical Specifications | Core Component / Configuration |
|---|---|---|
| Aspiration Type | Turbocharged | Equipped with heavy-duty Holset turbocharger |
| Fuel System (Pump) | In-line Inline Mechanical Pump | Mechanical A-pump / AD-pump or PT system (highly reliable) |
| Governor Type | Mechanical Governor (Electronic optional) | Steady-state speed regulation rate typically ≤1% to 5% |
| Max Fuel Inlet Restriction | 13.5 kPa | Exceeding this causes fuel starvation and power drop |
| Specific Fuel Consumption | ≤ 210 g/kW·h | High economy; roughly translates to 20 - 22 L/h at full load |
| Max Allowable Exhaust Backpressure | 10 kPa | Upper limit threshold for silencer and piping layout |
Electrical, Cooling & Lubrication Systems
| Parameter Item | Technical Specifications | Remarks / Functional Description |
|---|---|---|
| Starter Motor Voltage | 24 V DC (12V alternative available) | Direct Current (DC) starter motor execution |
| Alternator Capacity | 24V / 40A or 45A | Built-in internal solid-state voltage regulator |
| Recommended Battery | 120 Ah (2x batteries connected in series) | Ensures sufficient CCA (Cold Cranking Amps) in sub-zero winter |
| Thermostat Range | 82 ℃ (Fully open at 93 ℃) | Dual thermostat layout for precise temperature control |
| Oil Pressure (Rated Speed) | 350 - 450 kPa | Main oil gallery operating pressure under hot engine status |
| Min Oil Pressure (Idle) | 70 kPa | Threshold lower bound before triggering the low oil pressure alarm |
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