3.2 Product description
Engine description
Engine
The engine is a liquid-cooled four-stroke diesel engine, rotating counterclockwise (seen from driving end),
with direct injection, sequential turbocharging and charge air cooling.
The engine is monitored by an engine control and monitoring system (ADEC).
Fuel system
Electronically controlled common-rail-injection system with HP pump, pressure accumulator (rail) and single
injectors with integrated individual store.
The electronic control unit controls
• Injection start
• Injection quantity
• Injection pressure
Exhaust system
The exhaust system is equipped with triple-walled, water-cooled exhaust lines.
The triple-walled design offers
• low surface temperature,
• reduced amount of heat to be dissipated by the coolant,
• absolute gas-tightness.
Turbocharging system
Sequential turbocharging with internal, engine-coolant-controlled charge air cooling. The left-hand exhaust
turbocharger is cut-in and cut-out with electronically controlled, hydraulically actuated flaps.
Cooling system
Split-circuit engine cooling system with remote or engine-mounted heat exchanger.
Heating of the charge-air in idle and low-load operation prevents white smoke formation.
Seawater only flows through engine coolant and fuel heat exchanger as well as the raw water pump (if appli-
cable)..
Service block
The service components are mounted on the auxiliary PTO end.
The arrangement permits easy access for maintenance.
Service components:
• Raw water pump (if fitted), coolant pump
• Centrifugal lube oil filter
• Coolant expansion tank (only on engines with engine-mounted heat exchanger)
• Coolant filter
Intermittent oil priming for on-board power generating engines (M23-M43)
The engines are equipped with intermittent oil priming as standard.
Oil priming is activated every 30 minutes. The oil priming process ends as soon as oil pressure in the main oil
gallery reaches 0.4 bar or after 180 seconds, at the latest.
If at least 0.2 bar has not been reached in 180 seconds, an alarm is issued.
MS15034/00E 2018-08
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Summary of Contents for 8V4000M*3 series
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