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DEUTZ 6-cylinder in-line air-cooled naturally aspirated diesel engine assembly F6L912
Power Performance & Operating Specifications
| Parameter | Specification | Remarks / Additional Notes |
|---|---|---|
| Engine Model | F6L912 | Low-emission two-stage combustion variant for underground mining is F6L912W |
| Cylinders & Arrangement | In-Line 6-Cylinder | 4-stroke, Direct Injection (DI), Naturally Aspirated |
| Bore × Stroke | 100 mm × 120 mm | Single cylinder displacement: 0.9425 L; Total displacement: 5.655 L |
| Compression Ratio | 17 : 1 | Excellent cold-starting performance (mining swirl-chamber F6L912W is approx. 19 : 1) |
| Rated Power (Construction / Industrial) | 72 kW – 82 kW (98 – 111 HP) | Rated speed at 2300 r/min or 2500 r/min (per ISO 3046 / DIN 6271) |
| Rated Power (Generator Set) | 48 kW – 58 kW (65 – 79 HP) | Approx. 48–52 kW @ 1500 r/min (50Hz); approx. 55–58 kW @ 1800 r/min (60Hz) |
| Max. Torque | 340 N·m – 370 N·m | Peak torque achieved at 1450 – 1600 r/min, providing strong low-end torque reserve |
| Min. Stable Idle Speed | 650 – 750 r/min | Smooth operation with low idling vibration |
| Specific Fuel Consumption | ≤ 215 g/kW·h | Minimum fuel consumption at rated load (approx. 210–225 g/kW·h under typical gen-set load) |
Mechanical Structure & Cooling System Parameters
| Parameter | Specification | Remarks / Additional Notes |
|---|---|---|
| Cooling System | Forced Air-Cooled | Belt-driven axial cooling fan with air shroud directing airflow across cylinder and head fins |
| Block & Head Design | Modular Individual Cylinder Design | Gray cast-iron crankcase with 6 individual alloy cast-iron finned liners + 6 individual aluminum cylinder heads |
| Valve Train | Overhead Valve (OHV) | Gear-driven lower camshaft, 2 valves per cylinder (1 intake, 1 exhaust) actuated via pushrods and rocker arms |
| Crankshaft & Connecting Rods | Fully Supported Forged Steel Crankshaft | 7 main bearings with induction-hardened journals; drop-forged alloy steel connecting rods |
| Firing Order | 1 - 5 - 3 - 6 - 2 - 4 | Numbered sequentially from the flywheel end or fan end per standard specification |
| Direction of Rotation | Counter-Clockwise (CCW) | Viewed facing the flywheel end (compliant with DIN ISO 1204) |
| Max. Permissible Tilt Angle | Longitudinal / Lateral ≤ 25° – 30° | Requires matching deep oil sump and oil suction strainer for construction machinery applications |
Interface Dimensions & Electrical Configuration
| Parameter | Specification | Remarks / Additional Notes |
|---|---|---|
| Flywheel Housing Interface | SAE #2 or SAE #3 | SAE #2 standard for construction machinery & high-output gen-sets; SAE #3 optional |
| Flywheel Specification | SAE 10" or SAE 11.5" | Compatible with single/dual-plate dry clutches, torque converter flex-plates, or generator disc couplings |
| Electrical System Voltage | DC 12V or DC 24V | Standard solenoid-engaged starter motor (12V 3kW or 24V 4kW) and alternator (14V / 28V) |
| Fuel Injection System | Mechanical In-Line Injection Pump | Bosch A-type / P-type plunger pump with mechanical centrifugal all-speed governor |
| Auxiliary Power Take-Off (PTO) | Front / Timing Gear Housing Multi-PTO | Supports belt-driven or gear-driven hydraulic gear pumps and air compressors |
| Ambient Temperature Adaptability | -40°C to +50°C | Zero risk of coolant boiling or freezing; ideal for extreme cold and arid desert environments |
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