VOLVO PENTA INBOARD DIESEL

D12-400
6-cylinder, 4-stroke, direct-injected, turbocharged marine diesel engine
With after cooler – crankshaft power* 294 kW (400 hp)
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A New Generation
The Volvo Penta D12 Heavy-duty sets a new standard for reliability,
performance and low emissions that complywithhigheststandards.

Electronically controlled and fully classed,itoffersoutstanding
operating economy with a long service life, easy maintenance and low fuel
consumption. It is a new generation of reliable power.


Excellent reliability and economy
The D12-400 marine diesel engine is specially designed and developed for
installations in heavy duty commercial displacement craft, featuring the
latest advanced diesel technology.

To meet the tough and demanding reliability and durability demands from
operators and fleet owners, the D12-400 is tried and tested in the world’s
most extensive and toughest test program. 40 man-years behind the design
and 25 man-years in tests, which equals eight times around the world,
ensures excellent reliability and durability.

Excellent drivability is assured with high low-end and a rich torque curve
matched to the power outputs for fast and immediate response.

Low fuel consumption for long operational range and low operational cost
and emission levels is assured with:
– Electronic Unit Injectors
– 4-valve technology
– Electronically controlled injection timing
– High pressure 8-hole injector nozzles
– Electronic governing – EDC
This technology in combination with the electronic governing, EDC, protects
the engine from major breakdowns, which further enhancesthehigh
reliability and long service life for low operational costs.


High quality
The D12-400 is built in the world’s most highly automated diesel engine
factory line with a totally robotic machining and assembly line with
computer controlled audit checks, which ensures the highest quality level.


Operation and comfort
Electronic remote controls, push button twin engine synchronization and
change of active station ensures easy and smooth operation and maneuvering.

The electrical control levers are operated more smoothly and precisely,
requiring much less force. Automatic twin engine synchronization reduces
noise and vibration levels, and increases service life of engine. This, in
combination with the well-balanced D12-400 in-line six cylinder engine with
powerfully dimensioned crankshaft bearings andvibrationdamperon
camshaft, ensures smooth, vibration-free operation with low noise levels.


Low exhaust emission levels
The D12-400 advanced diesel technology greatly contributestomore
efficient combustion with higher power and reducednoxiousexhaust
emissions. D12-400 complies with the IMO emission regulations.


Easy installation
The D12-400 gives a time saving and reliable installation, as it is a
complete delivered compact and tailor-made propulsion system from one
single supplier. Plug-in water protected harnesses and connectors, compact
dimensions, and the EDC system ensures an easy, simple and time-saving
installation.


Ease of service and maintenance
The EDC system features a self-diagnostic facility. Easily accessible
service and maintenance points contributes to the ease of
service of the engine.


Worldwide service support in more than 100 countries
The Volvo Penta parts and service dealer network is a truly international
operation with authorized service dealers around the world. These service
centers offer Genuine Volvo Penta parts as well as skilled personnel to
ensure the best possible service. Continuous and thorough product and
service training ensures that Volvo Penta products are well supported.

D12-400 – a true marine engine from a true marine engine company
The D12-400 is a true marine engine, as it is developed by a true marine
company with the best there is to be found in marine experience and know-
how, and built and assembled with the best production method there is to be
found in the world. The D12-400 delivers excellent reliability, economy and
durability, in combination with the highest level of quality.


Technical Data
Enginedesignation
………………………………………………………………….

……………….D12D MH
No.ofcylindersandconfiguration
……………………………………………………………….

in-line 6
Methodofoperation
………………………………………………………………….

………………. 4-stroke,
Direct-injected, turbocharged
Diesel engine with after cooler
Bore, mm (in.)
………………………………………………………………….

……………………. 131 (5.16)
Stroke, mm (in.)
………………………………………………………………….

…………………. 150 (5.91)
Displacement,l(in3)
………………………………………………………………….

………. 12.13 (740.2)
Compressionratio
………………………………………………………………….

…………………….. 17.5:1
Dry weight, kg (lb)
………………………………………………………………….

…………… 1400 (3086)
Dry weight with reverse gear
MG5114SC,kg (lb)
………………………………………………………………….

………….. 1603 (3534)
MG5114DC,kg (lb)
………………………………………………………………….

…………. 1768 (3898)
Crankshaft power,
KW(hp)@1800
rpm……………………………………………………………….

……………… 294 (400)
Torque,
Nm (lbt.ft.) @ 1800rpm
………………………………………………………………….

…… 1560 (1150)
Recommendedfueltoconform
to………………………………………… ASTM-D975 1-D & 2-D,
………………………………………………………………….

………………………..EN 590 or JIS KK 2204
Specific fuel consumption,
G/kWh (lb/hph) @ 1800 rpm
………………………………………………………………….

207 (0.335)
Technical data according to ISO 3046 Fuel Stop Power and ISO 8665. Fuel
with a lower calorific value of 42700 kJ/kg and density of 840 g/liter at
15 C (60 F). Merchant fuel may differ from this specification which will
influence engine power output and fuel consumption.

Rating: 1
The engine complies with the IMO emission regulations.


Technical description:
Engine and block
– Cylinder block and cylinder head made of cast-iron
– One piece cylinder head
– Replaceable wet cylinder liners and valve seats/guides
– Drop forged crankshaft with induction hardened bearing surfaces and
fillets with seven main bearings
– Four valve per cylinder layout with overhead camshaft
– Each cylinder features cross-flow inlet and exhaust ducts
– Gallery oil cooled forged aluminum pistons
– Three piston rings
Lubrication system
– Integrated oil cooler in cylinder block
– Twin full flow oil filter of spin-on type and by-pass filter
Fuel system
– Six Electronic Unit Injectors, one per cylinder, vertically positioned at
the center in between the four valves
– Gear driven fuel pump, driven by timing gear
– Electronic controlled central processing system (EDC – Electronic Diesel
Control)
– Electronically controlled injection timing
– 5-hole high pressure injector nozzles
– Single fine fuel filter of spin-on type, with water separator
Turbocharger
– Fresh water cooled turbo charger Cooling system
– Fresh water cooled charge air cooler
– Gear driven coolant pumps
– Tubular heat exchanger or single-circuit keel cooling
Electrical system
– 24V electrical system, 24V/60A alternator Reverse gear
– MG5114SC/DC, electrically shifted