Kirloskar 3R1040
Kirloskar (KOEL) 3R1040 3.1L 3-cylinder diesel engine for generator sets. 28.2 kWe standby. EPA Tier 2. kWe estimated from rated mechanical output. Naturally Aspirated.
R1040 Series

- Configuration
- L3
- Displacement
- 3.1 L
- Fuel
- Diesel
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf · kWe estimated — see note below
50 Hz1500 RPM
| Rating | Prime | Standby |
|---|---|---|
| Mechanical power kWm | 28.3 | 31.3 |
| Electrical output kWe | 25.5 | 28.2 |
| Apparent power kVA | 31.9 | 35.3 |
60 Hz1800 RPM
| Rating | Prime | Standby |
|---|---|---|
| Mechanical power kWm | 32.1 | 35 |
| Electrical output kWe | 28.9 | 31.5 |
| Apparent power kVA | 36.1 | 39.4 |
Note: The manufacturer does not publish a separate kWe rating for this engine. kWe values shown are estimated from the rated mechanical output (kWm) using a conservative 90% alternator efficiency factor.
Datasheet & documents
Match the model number on your engine plate to the document. Check its revision date and the speed and duty listed for each power rating.
Technical specifications
Technical Specifications
| Brand | Kirloskar |
| Model | 3R1040 |
| Series | R1040 Series |
| Configuration | L3 |
| Cylinders | 3 |
| Displacement | 3.1 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 2 |
| Country of Origin | India |
Check your engine model
The Kirloskar 3R1040 is a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, rated at 35 kVA / 28 kWe / standby rating. Match the model and serial number on your engine plate when requesting a manual or parts. The ratings and emissions information below help identify the version fitted to your generator.
Other ways this model is written
3R1040 repair parts
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Frequently asked questions
What is the power output of the Kirloskar 3R1040?
The Kirloskar 3R1040 is rated at 35 kVA standby / 32 kVA prime at 50 Hz (1,500 rpm); and 39 kVA standby / 36 kVA prime at 60 Hz (1,800 rpm).
Does the 3R1040 run at 50 Hz or 60 Hz?
The Kirloskar 3R1040 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Kirloskar 3R1040 use?
The Kirloskar 3R1040 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 3R1040?
The Kirloskar 3R1040 is an inline-3 (3-cylinder) engine with a displacement of 3.1 L.
What emissions information is listed for the 3R1040?
This record lists U.S. EPA Tier 2 for the Kirloskar 3R1040. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Kirloskar 3R1040?
The Kirloskar 3R1040 is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the 3R1040?
This page links reference documents for the Kirloskar 3R1040. Check each document's title, model coverage, revision and rating conditions before using it for selection.
