PSI INDUSTRIAL ENGINES
In ProductionPSI 4.5L
PSI 4.5L is a 4.5 L L4 spark-ignition natural-gas generator engine. Natural-gas ratings: 50 Hz prime 35 kWe / 43 kWm; 50 Hz standby 39 kWe / 43 kWm; 60 Hz prime 40 kWe / 49 kWm; 60 Hz standby 45 kWe / 59 kWm. Ratings exclude propane/LPG data and were verified from official PSI natural-gas rating tables.
Standby Power
56 kVA
Electrical Output
45 kWe
Cylinders / Config
L4
Displacement
4.5 L
Rated Speed
1,500 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) |
|---|---|---|---|
| Prime | 43 | 35 | 43.8 |
| Standby | 43 | 39 | 48.8 |
| Operating Duty | kWm (Mechanical) | kWe (Electrical) | kVA (Rating) |
|---|---|---|---|
| Prime | 49 | 40 | 50 |
| Standby | 59 | 45 | 56.3 |
Mechanical & Electrical Specifications
| Brand | PSI |
| Model | 4.5L |
| Configuration | L4 |
| Cylinders | 4 |
| Displacement | 4.5 L |
| Compression Ratio | 9.75:1 |
| Dry Weight | 500 kg |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Certifications | EPA |
| Country of Origin | United States |
Frequently Asked Questions
What is the power output of the PSI 4.5L?
The PSI 4.5L is rated at 49 kVA standby / 44 kVA prime at 50 Hz (1,500 rpm); and 56 kVA standby / 50 kVA prime at 60 Hz (1,800 rpm).
Does the 4.5L run at 50 Hz or 60 Hz?
The PSI 4.5L is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the PSI 4.5L use?
The PSI 4.5L is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the 4.5L?
The PSI 4.5L is an inline-4 (4-cylinder) engine with a displacement of 4.5 L.
What emissions standard does the 4.5L meet?
The PSI 4.5L is certified to U.S. EPA Stationary emissions standards.
Is the PSI 4.5L still in production?
Yes — the PSI 4.5L is a current production model.
Is a datasheet available for the 4.5L?
Yes — an official PSI datasheet for the PSI 4.5L can be downloaded from this page.