PSI INDUSTRIAL ENGINES
In ProductionPSI 4.3L
PSI 4.3L is a 4.29 L V6 naturally aspirated spark-ignition natural-gas generator engine. Natural-gas ratings: 50 Hz prime 35 kWe / 43 kWm; 50 Hz standby 40 kWe / 48 kWm; 60 Hz prime 40 kWe / 52 kWm; 60 Hz standby 50 kWe / 58 kWm. Ratings exclude propane/LPG data and were verified from the official PSI catalog.
Standby Power
63 kVA
Electrical Output
50 kWe
Cylinders / Config
V6 Naturally Aspirated
Displacement
4.29 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 | 48 | 40 | 50 |
| Operating Duty | kWm (Mechanical) | kWe (Electrical) | kVA (Rating) |
|---|---|---|---|
| Prime | 52 | 40 | 50 |
| Standby | 58 | 50 | 62.5 |
Mechanical & Electrical Specifications
| Brand | PSI |
| Model | 4.3L |
| Configuration | V6 Naturally Aspirated |
| Cylinders | 6 |
| Displacement | 4.29 L |
| Compression Ratio | 9.8:1 |
| Dry Weight | 195 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 4.3L?
The PSI 4.3L is rated at 50 kVA standby / 44 kVA prime at 50 Hz (1,500 rpm); and 63 kVA standby / 50 kVA prime at 60 Hz (1,800 rpm).
Does the 4.3L run at 50 Hz or 60 Hz?
The PSI 4.3L is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the PSI 4.3L use?
The PSI 4.3L is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the 4.3L?
The PSI 4.3L is a V6 (6-cylinder) engine with a displacement of 4.29 L.
What emissions standard does the 4.3L meet?
The PSI 4.3L is certified to U.S. EPA Stationary emissions standards.
Is the PSI 4.3L still in production?
Yes — the PSI 4.3L is a current production model.
Is a datasheet available for the 4.3L?
Yes — an official PSI datasheet for the PSI 4.3L can be downloaded from this page.