Haifeng Machinery

Baudouin 6M31G660/6 vs VMAN D22Z

The Baudouin 6M31G660/6 and VMAN D22Z are both diesel generator engines in a similar power class. Both are rated at roughly 827 kVA. Displacement is 18.5 L versus 21.927 L. The table below compares their full specifications side by side.

SpecificationBaudouin 6M31G660/6VMAN D22Z
Headline rating825 kVA828 kVA
Standby (50 Hz)662 kWe
Prime (50 Hz)594 kWe
Standby (60 Hz)660 kWe
Prime (60 Hz)600 kWe
Displacement18.5 L21.927 L
ConfigurationL6V12
Cylinders612
Rated speed1,800 RPM1,500 RPM
FuelDieselDiesel
CoolingLiquid-CooledLiquid-Cooled
EmissionsUnregulatedUnregulated
Dry weight
OriginChinaChina

Choosing between Baudouin 6M31G660/6 and VMAN D22Z

Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The VMAN D22Z has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.