Cummins INDUSTRIAL ENGINES
In ProductionCummins QSJ5.9G
QSJ
Cummins QSJ5.9G is a 5.9 L inline-6 spark-ignited natural-gas generator engine. Cummins lists G1, G2 and G3 ratings in EPA NSPS-certified 60 Hz sets from 45 to 100 kWe; EPA annual certification data lists up to 123.8 kWm at 1800 RPM.
Standby Power
125 kVA
Electrical Output
100 kWe
Cylinders / Config
L6 Turbocharged Spark Ignition
Displacement
5.9 L
Rated Speed
1,800 RPM
ISO 8528 Power Ratings
Power Factor: 0.8 pfkWm = mechanical engine shaft power · kWe = electrical output · kVA = apparent electrical power.
| Operating Duty | kWm (Mechanical) | kWe (Electrical) | kVA (Rating) |
|---|---|---|---|
| Standby | — | 100 | 125 |
Mechanical & Electrical Specifications
| Brand | Cummins |
| Model | QSJ5.9G |
| Series | QSJ |
| Configuration | L6 Turbocharged Spark Ignition |
| Cylinders | 6 |
| Displacement | 5.9 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Certifications | U.S. EPA NSPS |
| Country of Origin | United States |
Frequently Asked Questions
What is the power output of the Cummins QSJ5.9G?
The Cummins QSJ5.9G is rated at 125 kVA standby at 60 Hz (1,800 rpm).
Does the QSJ5.9G run at 50 Hz or 60 Hz?
The Cummins QSJ5.9G is rated for 60 Hz (1,800 rpm).
What fuel does the Cummins QSJ5.9G use?
The Cummins QSJ5.9G is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the QSJ5.9G?
The Cummins QSJ5.9G is an inline-6 (6-cylinder) engine with a displacement of 5.9 L.
What emissions standard does the QSJ5.9G meet?
The Cummins QSJ5.9G is certified to U.S. EPA Stationary emissions standards.
Is the Cummins QSJ5.9G still in production?
Yes — the Cummins QSJ5.9G is a current production model.
Is a datasheet available for the QSJ5.9G?
Yes — an official Cummins datasheet for the Cummins QSJ5.9G can be downloaded from this page.