Haifeng Machinery

VMAN D22.2 vs Weichai 12M26D792E200

The VMAN D22.2 and Weichai 12M26D792E200 are both diesel generator engines in a similar power class. Both are rated at roughly 890 kVA. Displacement is 21.927 L versus 31.2 L. The table below compares their full specifications side by side.

SpecificationVMAN D22.2Weichai 12M26D792E200
Headline rating889 kVA891 kVA
Standby (50 Hz)713 kWe
Prime (50 Hz)648 kWe
Standby (60 Hz)711 kWe812 kWe
Prime (60 Hz)646 kWe738 kWe
Displacement21.927 L31.2 L
ConfigurationV12V12
Cylinders1212
Rated speed1,800 RPM1,500 / 1,800 RPM
FuelDieselDiesel
CoolingLiquid-CooledLiquid-Cooled
EmissionsUnregulatedChina National Stage II / Unregulated
Dry weight
OriginChinaChina

Choosing between VMAN D22.2 and Weichai 12M26D792E200

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 Weichai 12M26D792E200 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.