Weichai

Weichai 6M31D740E310 Generator Engine Specs

M31 Series

In Production

The Weichai 6M31D740E310 is an 18.6 L V6 diesel generator-drive engine in the M31 series. It is listed at 666 kWe / 833 kVA standby power for both 50 Hz and 60 Hz generator sets, with China Stage III / unregulated-market context for buyers comparing industrial diesel package options.

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

Standby Power · 50 Hz: 833 kVA
Electrical Output: 666 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	680	612	765
Standby Power	740	666	832.5

60 Hz1800 RPM

	kWm	kWe	kVA
Prime Power	680	612	765
Standby Power	740	666	832.5

Weichai 6M31D740E310 18.6L V6 diesel generator engine — 833 kVA standby specifications — Shareable spec cardWeichai 6M31D740E310 summary imageOpen image

Weichai 6M31D740E310 generator set context

Also searched as

6m31d740e310Weichai 6M31D740E310Weichai M31 740 kWmWeichai 833 kVA generator engineM31 Series 6M31D740E310

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Technical reference links

Weichai engine hub 500-1,500 kWe engines Diesel engines China Stage III engines Generator sizing guide Alternator matching guide

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Haifeng Machinery can help check whether the 6M31D740E310 fits the required standby or prime load, then match alternator, controller, enclosure, voltage, cooling and export documentation.

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Technical Specifications

Brand	Weichai
Model	6M31D740E310
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 6M31D740E310?

The Weichai 6M31D740E310 is rated at 833 kVA standby / 765 kVA prime at 50 Hz (1,500 rpm); and 833 kVA standby / 765 kVA prime at 60 Hz (1,800 rpm).

Does the 6M31D740E310 run at 50 Hz or 60 Hz?

The Weichai 6M31D740E310 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).

What fuel does the Weichai 6M31D740E310 use?

The Weichai 6M31D740E310 is a diesel generator-set engine.

What is the displacement and cylinder configuration of the 6M31D740E310?

The Weichai 6M31D740E310 is a V6 (6-cylinder) engine with a displacement of 18.6 L.