MTU Diesel Engines 20V 8000 M71R/71/71L for Vessels with High Load Factors (1B)

Product catalog summary

Overview: This document provides technical specifications and details for the Diesel Engines 20V 8000 M71R/71/71L, designed for vessels with high load factors such as fast ferries, yachts, and naval vessels.

Engine Models and Specifications:

Models: 20V 8000 M71R, 20V 8000 M71, 20V 8000 M71L
Rated Power: 7200 kW (9655 bhp) for M71R, 8200 kW (10995 bhp) for M71, 9100 kW (12205 bhp) for M71L
Speed: 1080 – 1150 rpm for M71R and M71, 1100 – 1150 rpm for M71L
Exhaust Emissions: Compliant with IMO and EPA Tier 2 standards
Bore/Stroke: 265 mm / 315 mm (10.4 in / 12.4 in)
Displacement: 347.4 liters (21200 cu in)

Fuel Consumption:

At rated power: 193 g/kWh for M71R, 190 g/kWh for M71, 189 g/kWh for M71L
Fuel consumption in liters per hour: 1674 l/h for M71R, 1877 l/h for M71, 2072 l/h for M71L

Standard Equipment:

Starting System: Air starter motor, coolant preheating system
Oil System: Includes lube oil pump, automatic filter, and heat exchanger
Fuel System: Common rail fuel injection with high-pressure pump
Cooling System: MTU-split-circuit coolant system
Combustion Air System: Intercooler and sequential turbocharging
Exhaust System: On-engine exhaust manifolds
Mounting System: Resilient mounts
Power Transmission: Torsional and offset compensating couplings
Engine Management System: MDEC with remote control interface

Optional Equipment:

Compressed air tanks for starting system
Monitoring and control system options
Various gearbox models

Dimensions and Masses:

Length: 6645 mm (261.6 in)
Width: 2040 mm (80.3 in)
Height: 3375 mm (132.9 in)
Mass: Dry - 45300 kg (98870 lbs), Wet - 47665 kg (105080 lbs)

Contact Information: For further details, contact MTU regional offices in Europe, Asia, and the USA.

Catalog excerpts

MTU Diesel Engines 20V 8000 M71R/71/71L for Vessels with High Load Factors (1B)-1

with High Load Factors (IB) Typical applications: Fast Ferries, Yachts and Naval Power definition according ISO 3046; Intake air temperature 25°C / Sea water temperature 25°C; Intake air depression 15 mbar / Exhaust back pressure 30 mbar; Barometric pressure 1000 mbar; Power reduction at 45°C/32°C: none. Exhaust emissions: MO - Internationa Maritime Organization EPA - US Maritime Regulation 40 CFR 94, Tier 2 11 Tolerance +5% per ISO 3046, diesel fuel to DIN EN 590 with a min. L.H.V. of 42800kJ/kg (18390 BTU/lb)

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MTU Diesel Engines 20V 8000 M71R/71/71L for Vessels with High Load Factors (1B)-2

Interfaces Flexible joints (hose lines, rubber bellows) Specifications are subject to change without notice. All dimensions are approximate. For complete information refer to installations drawing. For further information consult your MTU or MTU Detroit Diesel distributor/dealer. Tognum Group Companies Europe/Middle East/Africa/ Latin America Asia /Australia / Singapore 629923, Republic of Singapore 13400 Outer Drive West

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