Cat and MaK marine propulsion engines, generator sets, controls, parts and repower programs.
Caterpillar Marine Equipment Enhanced
Cat C4.4 Marine Generator Set
Inline 4-cylinder 4.4 L diesel marine genset, 36-99 ekW at 1500/1800 rpm, with heat exchanger, radiator or keel cooling, open or enclosed, 12 or 24 V; class-approved packages available.
Description
The Cat C4.4 Marine Generator Set is a compact three-phase diesel genset for commercial and pleasure craft. It is offered in 12 or 24 V as an open set or enclosed package, with single-side servicing and Marine Classification Society approved packages available.
Ratings
- 50 Hz: 38.0, 51.5 and 69.0 ekW (heat exchanger cooled); 36.0, 49.0 and 65.0 ekW (radiator cooled), meeting EU CCNR2
- 60 Hz: 44.0, 58.5, 76.0 and 99.0 ekW (heat exchanger cooled); 42.0, 56.0, 72.0 and 95.0 ekW (radiator cooled)
Technical data
- Engine: inline 4, 4-stroke diesel, 4.4 L (269 in³); bore 105 mm, stroke 127 mm; NA, T or TA
- Electronic governor; 1500/1800 rpm
- Generator: brushless, 3-phase, 12-lead reconnectable, 2/3 pitch, Class H insulation, IP23 (IP44 for certain models)
- Excitation from auxiliary winding providing 300% short-circuit current for up to 10 seconds
- Dimensions: 1,750 x 1,215 x 1,000 mm (L x W x H); weight 805-1,015 kg
Key features
- Automatic shutdowns for overspeed, high fresh water temperature, low oil pressure and high exhaust temperature (with wet exhaust)
- Heat exchanger packages with cupro-nickel tube bundle sized for 50 °C ambient air and 32 °C sea water; keel-cooled packages sized for 50 °C ambient
- Glowplug cold start, dry insulated turbocharger (DIT/DITA), water-cooled exhaust manifolds
- Steel base frame with drip pan and anti-vibration mounts
- Power quality suitable for sensitive onboard electronics
- Optional space heater kit (240 V AC or 120 V AC)
Specifications
| Frequency | 50 / 60 50 / 60 |
|---|---|
| Speed | 1500 / 1800 rpm 1500 / 1800 rpm |
| Minimum Rating | 36.0R ekW (45 kVA) 36.0R ekW (45 kVA) |
| Maximum Rating | 99 ekW (123 kVA) 99 ekW (123 kVA) |
| Engine Model | In-line 4, 4-Stroke-Cycle Diesel In-line 4, 4-Stroke-Cycle Diesel |
| Aspiration | NA, T, TA NA, T, TA |
| Bore | 4.13 in 105 mm |
| Stroke | 5 in 127 mm |
| Displacement | 269 in³ 4.4 l |
| Governor Type | Electronic Electronic |
| Excitation | Separately excited from auxiliary winding to provide 300% short circuit current up to 10 seconds Separately excited from auxiliary winding to provide 300% short circuit current up to 10 seconds |
| Pitch | 2/3 2/3 |
| Number of Leads | 12 lead reconnectable 12 lead reconnectable |
| Insulation | Class H Class H |
| IP Rating | IP23 water protection (IP44 available for certain models, contact your dealer for information) IP23 water protection (IP44 available for certain models, contact your dealer for information) |
| Voltage Regulator | Solid state voltage regulator with integral voltage adjustment potentiometer Solid state voltage regulator with integral voltage adjustment potentiometer |
| Length | 68.9 in 1750 mm |
| Width | 47.8 in 1215 mm |
| Height | 39.4 in 1000 mm |
| Weight | 805 kg (1775 lb) - 1015 kg (2338 lb) 805 kg (1775 lb) - 1015 kg (2338 lb) |
| Power Range | 36.0R - 99 ekW |
| Emissions | NST |
| Application | Yachting |
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