Fuel preparation
Match gas quality, pressure and conditioning to the selected engine.
Jenbacher · Generators
Jenbacher Gas Generator Sets
Jenbacher gas generator sets provide 330–4401 kW at 50 Hz across the reference Series 2, 3, 4 and 6 models. Compare electrical output, recoverable heat, efficiency and installation dimensions for natural gas power and combined heat and power projects.
- Series 2 and 3: Proven engine layouts with service access and monitoring for distributed energy installations.
- Series 4: Higher power density with electrical outputs from 889 to 1487 kW in the supplied model table.
- Series 6: 1500 rpm engines for larger power and CHP projects; J624GS reaches 4401 kW in the reference table.
- Power range
- 330–4401 kW
- Frequency
- 50 Hz
- Fuel
- Natural gas / qualified gases
- Model options
- 11
Product Essentials
Everything needed for a quick technical review.
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Technical Specifications
Technical Specifications
All listed models: natural gas, 50 Hz, 1500 rpm, NOx 500 mg/Nm³ as printed in the source. Electrical, thermal and total efficiencies are separate source values; dimensions are length × width × height in mm.
Power & Efficiency
Scroll the table horizontally to view all specifications.
| Model | Series | Electrical kW | Electrical % | Thermal kW | Thermal % | Total % |
|---|---|---|---|---|---|---|
| J208GS | 2 | 330 | 38.7 | 371 | 43.6 | 82.3 |
| J312GS | 3 | 637 | 41.4 | 734 | 47.4 | 88.5 |
| J316GS | 3 | 850 | 41.1 | 979 | 47.4 | 88.5 |
| J320GS | 3 | 1063 | 40.8 | 1239 | 47.6 | 88.4 |
| J412GS | 4 | 889 | 42.8 | 918 | 44.2 | 87.1 |
| J416GS | 4 | 1189 | 43 | 1223 | 44.2 | 87.2 |
| J420GS | 4 | 1487 | 43 | 1528 | 44.2 | 87.2 |
| J612GS | 6 | 2000 | 44.7 | 1948 | 43.5 | 88.2 |
| J616GS | 6 | 2679 | 44.9 | 2597 | 43.5 | 88.4 |
| J620GS | 6 | 3352 | 44.9 | 3228 | 43.3 | 88.2 |
| J624GS | 6 | 4401 | 46.3 | 4070 | 42.8 | 89.1 |
Individual efficiency columns are reproduced independently from the source and may not add exactly to its printed total. NOx test conditions are not specified in the source image.
Engine & Installation
Scroll the table horizontally to view all specifications.
| Model | Layout | Cylinders | Bore mm | Stroke mm | L / cylinder | Displacement L | Piston m/s | L × W × H mm | Weight kg |
|---|---|---|---|---|---|---|---|---|---|
| J208GS | Inline | 8 | 135 | 145 | 2.08 | 16.6 | 7.3 | 4900×1700×2000 | 4900 |
| J312GS | V70° | 12 | 135 | 170 | 2.43 | 29.2 | 8.5 | 4700×1800×2300 | 8000 |
| J316GS | V70° | 16 | 135 | 170 | 2.43 | 38.9 | 8.5 | 5200×1800×2300 | 8800 |
| J320GS | V70° | 20 | 135 | 170 | 2.43 | 48.7 | 8.5 | 5700×1700×2300 | 10500 |
| J412GS | V70° | 12 | 145 | 185 | 3.06 | 36.7 | 9.3 | 5400×1800×2200 | 10900 |
| J416GS | V70° | 16 | 145 | 185 | 3.06 | 48.9 | 9.3 | 6200×1800×2200 | 12500 |
| J420GS | V70° | 20 | 145 | 185 | 3.06 | 61.1 | 9.3 | 7100×1900×2200 | 14400 |
| J612GS | V60° | 12 | 190 | 220 | 6.24 | 74.9 | 11 | 7600×2200×2800 | 20600 |
| J616GS | V60° | 16 | 190 | 220 | 6.24 | 99.8 | 11 | 8300×2200×2800 | 26000 |
| J620GS | V60° | 20 | 190 | 220 | 6.24 | 124.8 | 11 | 8900×2200×2800 | 30700 |
| J624GS | V60° | 24 | 190 | 220 | 6.24 | 149.8 | 11 | 12100×2450×2900 | 49200 |
Applications
Applications
Industrial and commercial power, municipal energy systems, combined heat and power (CHP), and combined cooling, heat and power where the project includes the required heat-recovery equipment.
Working Principle
Working Principle
Gas mixing & ignition
The air–gas mixture is ignited in the cylinders to drive the engine.
Electrical generation
The engine drives the alternator at the selected rated speed and frequency.
Control & heat recovery
Controls monitor operation; project-specific CHP equipment can recover useful heat.
Features & Series
Features & Series
Series 2 and 3
Proven engine layouts with service access and monitoring for distributed energy installations.
Series 4
Higher power density with electrical outputs from 889 to 1487 kW in the supplied model table.
Series 6
1500 rpm engines for larger power and CHP projects; J624GS reaches 4401 kW in the reference table.
Fuel and heat recovery
Project configurations may use natural gas, biogas, landfill gas, associated gas or other qualified gases; the table below is specifically for natural gas.
System Configuration
System Configuration
Generator set
- Gas engine
- Alternator and coupling
- Base frame and engine management
Project options
- Fuel treatment and regulation
- Cooling and exhaust arrangement
- Grid connection and heat recovery
Selection Support
Selection Support
Share your gas composition, heating value, required electrical output, frequency, site conditions and heat-recovery needs for equipment selection.
Gas composition and heating valueRequired electrical power50 / 60 Hz and voltageAmbient temperature and altitudeOperating mode and annual hoursHeat recovery and grid connection
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