Weichai
Weichai WP4D77E300NG
WP Series
The Weichai WP4D77E300NG is a 4.5-litre inline-4 natural gas engine for generator sets, rated at 86 kVA / 69 kWe standby power at 1,500 RPM (50 Hz). It is a liquid-cooled engine built in China.
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- Manufacturer files
- 2 datasheets
- Last updated
- 2026-06-08
- Package route
- gas generator sets
- Standby Power · 50 Hz
- 86 kVA
- Electrical Output
- 69 kWe
- Cylinders
- L4
- Displacement
- 4.5 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 | 70 | 60 | 75 |
| Standby Power | 76.7 | 69 | 86.3 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 70 | 63 | 78.8 |
| Standby Power | 76.7 | 69 | 86.3 |
Weichai WP4D77E300NG generator set context
The Weichai WP4D77E300NG is listed here as a natural gas generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 86 kVA / 69 kWe / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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Technical Specifications
| Brand | Weichai |
| Model | WP4D77E300NG |
| Series | WP Series |
| Configuration | L4 |
| Cylinders | 4 |
| Displacement | 4.5 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | China |
Frequently asked questions
What is the power output of the Weichai WP4D77E300NG?
The Weichai WP4D77E300NG is rated at 86 kVA standby / 75 kVA prime at 50 Hz (1,500 rpm); and 86 kVA standby / 79 kVA prime at 60 Hz (1,800 rpm).
Does the WP4D77E300NG run at 50 Hz or 60 Hz?
The Weichai WP4D77E300NG is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Weichai WP4D77E300NG use?
The Weichai WP4D77E300NG is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the WP4D77E300NG?
The Weichai WP4D77E300NG is an inline-4 (4-cylinder) engine with a displacement of 4.5 L.
Is the Weichai WP4D77E300NG still in production?
Yes — the Weichai WP4D77E300NG is a current production model.
Is a datasheet available for the WP4D77E300NG?
Yes — an official Weichai datasheet for the Weichai WP4D77E300NG can be downloaded from this page.