LD6W Series Fire Pump Diesel Engine
300-350 HP Fire Fighting Pump Drive
LD6W Series Fire Pump Diesel Engine
Product Overview
The LD6W series fire fighting pump diesel engines are 6-cylinder large-displacement engines rated at 2900 r/min, covering 300-350 HP (221-258 kW) with a fitting pump set power of 230-300 HP. As the top of the fire pump engine line, the series powers high-capacity fire pump sets that demand strong, sustained output.
Key Features
- 6-cylinder engines designed at 2900 r/min, covering 300-350 HP, fitting pump set power 230-300 HP
- Large 9.4 L displacement for strong, sustained power delivery
- Rated power tested by factory per China standard method (without radiator)
- High-quality components for stronger, more durable power output
Technical Specifications
| Model | Rated Power/Speed (kW/r/min) | Intake | Cylinders-Bore×Stroke (mm) | Displacement (L) | Min Fuel Consumption (g/kW·h) | Oil Capacity (L) |
|---|---|---|---|---|---|---|
| LD6W300Z | 221/2900 | Turbocharged | 6-126×125 | 9.4 | ≤200 | 18-25 |
| LD6W350L | 258/2900 | Turbocharged & Intercooled | 6-126×125 | 9.4 | ≤200 | 18-25 |
Series common specifications: direct injection, vertical, inline, 4-stroke; water cooled; electric starting, 24V; noise limit ≤102 dB(A); meets the 4-hour continuous operation standard for fire fighting duty.
Performance Curve

Performance curve shown for LD6W350L, a representative model of this series.
| Engine Speed (r/min) | Power (kW) |
|---|---|
| 2900 | 260 |
| 2700 | 257 |
| 2500 | 251 |
| 2300 | 242 |
| 2100 | 233 |
| 1900 | 219 |
| 1700 | 195 |
Applications
- Fire pump set drive
- Fire truck pump drive
- Fixed fire protection systems
- Industrial and municipal fire protection