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6AYAM-ET

Main Engine 4-Stroke · Main Engines (4-Stroke)

Class-certified type (DNV register) · technical data sheet not yet verified
555 kWPower
6Cylinders
Yanmar in the SpecCodex register — view brand page →

The 6AYAM-ET is a 6-cylinder, 155x180 mm, 20.379 L in-line turbocharged marine diesel with sea-water-cooled intercooling, rated at a single continuous output of 555 kW/755 mhp at 1900 rpm. It is IMO Tier II compliant via an internal EGR system requiring no external EGR devices or supercharger modifications. Keel cooling is standard with a heat exchanger offered as an option; it pairs with the YXH-240/YXH-240L hydraulic multi-disc clutch gearboxes.

Specifications

Technical data.

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Rated power (kW)555 (continuous)
Rated power hp755
Speed (1/min)1900
Bore x stroke (mm)155 x 180
Displacement (l)20.379
Dry weight (kg)2295 (2365 with optional heat exchanger)
EmissionsIMO Tier II
AspirationTurbocharged, sea water cooled intercooler
CoolingKeel cooling [optional heat exchanger]; fresh water capacity 35 L engine only [optional HE: 68 L]
FuelDiesel, Cetane No.45, specific gravity 0.835 g/cc
Fuel consumption218 +/-5% g/kWh at rated output
LubricationForced lubrication with gear pump; SAE40 or SAE15W-40; capacity normal 91 L / shallow 53 L
Starting systemElectric starting motor DC24V-8kW [optional air starting]
Gearbox optionsYXH-240 (ratios 1.95-6.95, dry weight 605 kg); YXH-240L (dry weight 1240 kg)
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