Weichai

Weichai 6M31D640E310

M31 Series

In Production

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.

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Manufacturer files: No datasheet
Last updated: 2026-05-29
Package route: diesel generator sets

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

Weichai 6M31D640E310 18.6L V6 diesel generator engine — 720 kVA standby specifications — Shareable spec cardWeichai 6M31D640E310 summary imageOpen image

Weichai 6M31D640E310 generator set context

The Weichai 6M31D640E310 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 720 kVA / 576 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.

Also searched as

6m31d640e310Weichai 6M31D640E310M31 Series 6M31D640E310

BrandAll Weichai engines CompareSimilar engines Haifeng packagediesel generator sets

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.