Specifications:
The Auxiliary Diesel Engine 12M26.3 IMO II is designed for marine applications, offering durability and performance. It features a V12 cylinder configuration with a bore and stroke of 150 mm each, and a total displacement of 31.8 liters. The engine rotates counterclockwise and has an idle speed of 650 RPM. It includes an 18-inch flywheel and SAE 0 flywheel housing.

Performance Ratings:
The engine provides two power ratings: 1199 HP (882 kW) at 1500 RPM with a fuel consumption of 197 g/kWh, and 1362 HP (1002 kW) at 1800 RPM with a fuel consumption of 199 g/kWh. Both ratings comply with IMO II emissions standards.

Power Class Definition:
The engine is classified under Prime Power (PRP), allowing unrestricted running time with a full load time of 500 hours per year and load variation at 75% of rated power. It can handle a 10% overload for 1 hour every 12 hours.

Environmental Conditions:
Reference conditions include an ambient temperature of 25°C, barometric pressure of 100 kPa, and relative humidity of 30%. The engine can operate without power derating at ambient temperatures up to 45°C and raw water temperatures up to 32°C.

Cooling and Lubrication Systems:
The engine features a two-stage cooling circuit with a built-in HT thermostatic valve, an integrated fresh water expansion tank, and a high-efficiency tubular heat exchanger. The lubrication system includes full-flow lube oil filters and a fresh water-cooled lube oil heat exchanger.

Fuel and Air Systems:
The fuel system uses common-rail electronic injection with a high-pressure pump and shielded high-pressure injection rail and pipes. The intake air and exhaust system includes a double flow raw water-cooled intake air heat exchanger module and a high-efficiency dry turbocharger.

Electrical System:
The engine operates on a 24V DC insulated electrical system with an electrical starter and a 190A battery alternator.

Optional Equipment:
Options include an external fuel pre-filter with water separator, keel cooling, additional pulley, electric drain system, front PTO, circuit breaker, live PTO, elastic pads, close crankcase ventilation, and air starter.

Dimensions and Weight:
The engine dimensions are 2501 mm total length and 2145 mm from the flywheel, with a dry weight of 3350 kg.