LD4D Series Fire Pump Diesel Engine
85-120 HP Fire Fighting Pump Drive
LD4D Series Fire Pump Diesel Engine
Product Overview
The LD4D series fire fighting pump diesel engines cover 85-120 HP (63-90 kW) at a rated speed of 2900 r/min, with a fitting pump set power of 70-100 HP. Designed by Yuchai technology and sharing its parts system, the series combines proven architecture with strong parts availability for mid-range fire pump sets.
Key Features
- Full series designed at 2900 r/min, covering 85-120 HP, fitting pump set power 70-100 HP
- Designed by Yuchai technology and shares its parts system
- 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) |
|---|---|---|---|---|---|---|
| LD4D85 | 63/2900 | Natural | 4-108×115 | 4.2 | ≤200 | 10-12 |
| LD4D100Z | 75/2900 | Turbocharged | 4-108×115 | 4.2 | ≤200 | 10-12 |
| LD4D120Z | 90/2900 | Turbocharged | 4-108×115 | 4.2 | ≤200 | 10-12 |
Series common specifications: direct injection, vertical, inline, 4-stroke; water cooled; electric starting, 12V or 24V; noise limit ≤102 dB(A); meets the 4-hour continuous operation standard for fire fighting duty.
Performance Curve
Performance curve shown for LD4D120Z, a representative model of this series.
| Engine Speed (r/min) | Power (kW) |
|---|---|
| 2900 | 90 |
| 2700 | 89 |
| 2500 | 86 |
| 2300 | 83 |
| 2100 | 78 |
| 1900 | 72 |
| 1700 | 64 |
| 1500 | 54 |
| 1300 | 42 |
Applications
- Fire pump set drive
- Fire truck pump drive
- Fixed fire protection systems
- Industrial and municipal fire protection