Weichai
Weichai 6M31D640E310
M31 Series
The Weichai 6M31D640E310 is a 18.6-litre V6 diesel engine for generator sets, rated at 720 kVA / 576 kWe standby power at 1,500 RPM (50 Hz). It is a liquid-cooled engine built in China.
- Standby Power · 50 Hz
- 720 kVA
- Electrical Output
- 576 kWe
- Cylinders
- V6
- Displacement
- 18.6 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 580 | 522 | 652.5 |
| Standby Power | 640 | 576 | 720 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 580 | 522 | 652.5 |
| Standby Power | 640 | 576 | 720 |
Technical Specifications
| Brand | Weichai |
| Model | 6M31D640E310 |
| Series | M31 Series |
| Configuration | V6 |
| Cylinders | 6 |
| Displacement | 18.6 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | China National Stage III / Unregulated |
| Country of Origin | China |
Frequently asked questions
What is the power output of the Weichai 6M31D640E310?
The Weichai 6M31D640E310 is rated at 720 kVA standby / 653 kVA prime at 50 Hz (1,500 rpm); and 720 kVA standby / 653 kVA prime at 60 Hz (1,800 rpm).
Does the 6M31D640E310 run at 50 Hz or 60 Hz?
The Weichai 6M31D640E310 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Weichai 6M31D640E310 use?
The Weichai 6M31D640E310 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 6M31D640E310?
The Weichai 6M31D640E310 is a V6 (6-cylinder) engine with a displacement of 18.6 L.
Is the Weichai 6M31D640E310 still in production?
Yes — the Weichai 6M31D640E310 is a current production model.
Related Engines
Compare Weichai 6M31D640E310
Reference
- Canonical page
- /engines/weichai-6m31d640e310
- Last database update
- 2026-05-29
- Manufacturer files
- No datasheet linked yet
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