PSI
PSI 22L
PSI 22L — 21.93 L V12 (128 × 142 mm bore × stroke) turbocharged & air-to-air charge-cooled natural gas / propane generator engine, 10.5:1 compression, 1650 kg dry. 350 kWe standby / 300 kWe prime @ 50 Hz. From the official PSI 22L spec sheet (High-Output NG standby 500 kWe @ 60 Hz; LPG prime 210/250 kWe).
- Standby Power · 50 Hz
- 438 kVA
- Electrical Output
- 350 kWe
- Cylinders
- V12
- Displacement
- 21.93 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 340 | 300 | 375 |
| Standby Power | 397 | 350 | 437.5 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 434 | 375 | 468.8 |
| Standby Power | 510 | 450 | 562.5 |
PSI 22L generator set context
The PSI 22L is listed here as a natural gas generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 438 kVA / 350 kWe / standby 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.
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Technical Specifications
| Brand | PSI |
| Model | 22L |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 21.93 L |
| Compression Ratio | 10.5:1 |
| Dry Weight | 1650 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 22L?
The PSI 22L is rated at 438 kVA standby / 375 kVA prime at 50 Hz (1,500 rpm); and 563 kVA standby / 469 kVA prime at 60 Hz (1,800 rpm).
Does the 22L run at 50 Hz or 60 Hz?
The PSI 22L is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the PSI 22L use?
The PSI 22L is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the 22L?
The PSI 22L is a V12 (12-cylinder) engine with a displacement of 21.93 L.
What emissions standard does the 22L meet?
The PSI 22L is certified to U.S. EPA Stationary emissions standards.
Is the PSI 22L still in production?
Yes — the PSI 22L is a current production model.
Is a datasheet available for the 22L?
Yes — an official PSI datasheet for the PSI 22L can be downloaded from this page.
Related Engines
Reference
- Canonical page
- /engines/psi-gas-22l
- Last database update
- 2026-06-29
- Manufacturer files
- 2 datasheets linked
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