Jenbacher
Jenbacher J312
Type 3
Jenbacher J312 — 29.2 L V12 (70° V) lean-burn gas engine (Type 3), multi-fuel: natural gas, biogas, landfill/sewage gas and special gases. Up to 635 kWe (393–635 kWe across versions) at 1500 rpm / 50 Hz, electrical efficiency up to 43%; for power generation / CHP.
- Prime Power · 50 Hz
- 794 kVA
- Electrical Output
- 635 kWe
- Cylinders
- V12
- Displacement
- 29.2 L
- Rated Speed
- 1,500 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | — | 635 | 793.8 |
Jenbacher J312 generator set context
The Jenbacher J312 is listed here as a natural gas generator-drive engine for 50 Hz generator sets, with a headline 794 kVA / 635 kWe / prime 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
Technical Specifications
| Brand | Jenbacher |
| Model | J312 |
| Series | Type 3 |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 29.2 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | Austria |
Frequently asked questions
What is the power output of the Jenbacher J312?
The Jenbacher J312 is rated at 794 kVA prime at 50 Hz (1,500 rpm).
Does the J312 run at 50 Hz or 60 Hz?
The Jenbacher J312 is rated for 50 Hz (1,500 rpm).
What fuel does the Jenbacher J312 use?
The Jenbacher J312 is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the J312?
The Jenbacher J312 is a V12 (12-cylinder) engine with a displacement of 29.2 L.
Is the Jenbacher J312 still in production?
Yes — the Jenbacher J312 is a current production model.
Is a datasheet available for the J312?
Yes — an official Jenbacher datasheet for the Jenbacher J312 can be downloaded from this page.
Related Engines
Compare Jenbacher J312
Reference
- Canonical page
- /engines/jenbacher-j312
- Last database update
- 2026-06-08
- Manufacturer files
- 1 datasheet linked
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