Marine Parts Express
VOLVO PENTA INBOARD DIESEL
D12-450
6-cylinder, 4-stroke, direct-injected, turbocharged marine diesel engine
with aftercooler – crankshaft power* 331 kW (450 hp)
* Power rating – see Technical Data
Excellent reliability and
economy
The D12-450 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 D12-450
has been tried and tested in the world’s
toughest and most extensive 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 5-hole injector nozzles
– Electronic governing – EMS
This technology combined optimizes
engine performance and efficiency, ensures efficient combustion by injecting
the right quantity of fuel at the right time,
which minimizes quantity of unburned
fuel, reducing fuel consumption and exhaust emission levels. The Volvo Penta
D12-450 fuel system is designed to give
full output regardless of fuel temperature.
This technology in combination with
the Electronic Vessel Control, EVC, protects the engine from major breakdowns,
which further enhances the high reliability
and long service life for low operational
costs.
High quality
The D12-450 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.
Electronic Vessel Control
(EVC/EC)
Ease of service and
maintenance
EVC Electronic Vessel Control is the next
generation of distributed control systems
for marine applications. EVC adds features
like electrical shift and throttle, synchronization, a new generation of instrumentation
and much more. The electrical control levers are operated smoothly and precisely,
with little force. Automatic twin engine synchronization reduces noise and vibrations
levels, and increases service life of engine.
This, in combination with the well-balanced
D12-450 in-line six cylinder engine with powerfully dimensioned crankshaft bearings and vibration damper on camshaft, ensures smooth,
vibration-free operation with low noise levels.
The EVC system features a self-diagnostic facility. Easily accessible service
and maintenance points contribute to the
ease of service of the engine.
Low exhaust emission levels
The D12-450 advanced diesel technology
greatly contributes to more efficient combustion with higher power and reduced
noxious exhaust emissions.
The D12-450 is certified according to
IMO US/EPA.
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.
D12-450 – a true marine
engine from a true marine
engine company
The D12-450 is a true marine engine, as
it is developed by a true marine company
with the best there is to be found in maEasy installation
rine experience and know-how, and built
The D12-450 together with EVC gives a
and assembled with the best production
time-saving and reliable installation, as it is a method there is to be found in the world.
complete delivered compact and tailor-made
The D12-450 delivers excellent relipropulsion system from one single supplier. ability, economy and durability, in combiPlug-in water-protected harnesses and
nation with the highest level of quality.
connectors, compact dimensions, and the
EVC system ensures an easy, simple and
time-saving installation.
D12-450
Technical Data
Engine designation .....................................D12D MH
No. of cylinders and configuration ............. in-line 6
Method of operation.....................................4-stroke,
direct-injected, turbocharged
diesel engine with aftercooler
Bore, mm (in.) ............................................131 (5.16)
Stroke, mm (in.) .........................................150 (5.91)
Displacement, l (in3) ...........................12.13 (740.2)
Compression ratio ........................................... 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 ................................331 (450)
Max torque,
Nm (lbf.ft.) @ 1400 rpm ......................2019 (1489)
Recommended fuel to
conform to ......................... ASTM-D975 1-D & 2-D,
.............................................. EN 590 or JIS KK 2204
Specific fuel consumption,
g/kWh (lb/hph) @ 1800 rpm................ 208 (0.337)
Technical data according to ISO 3046 Fuel Stop Power and ISO
8665. With fuel having an LHV 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 is certified according to IMO US/EPA.
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
Power
1. Crankshaft power
2. At calculated propeller load exp. 3
kW
500
Lubrication system
— Integrated oil cooler in cylinder block
— Twin full flow oil filter of spin-on type and
by-pass filter
250
— 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
— Electronically controlled central processing system (EMS – Engine Management System)
— Electronically controlled injection timing
— 5-hole high pressure injector nozzles
— Single fine fuel filter of spin-on type, with
water separator
Turbocharger
550
350
300
Fuel system
hp, metric
400
450
400
350
1
300
200
250
150
200
150
100
2
100
50
50
0
1000
0
1200
1400
1600
1800
Rpm
Torque
T orque measured at crankshaft
Nm
kpm
2100
205
2000
195
1900
185
1800
— Freshwater-cooled turbo charger
Cooling system
— Freshwater-cooled charge air cooler
— Gear-driven coolant pumps
— Tubular heat exchanger or single-circuit
keel cooling
175
1700
165
1600
1000
1200
Electrical system
— 24V electrical system, 24V/60A alternator
Reverse gear
— MG5114SC/DC-E, electrically shifted
1400
1600
1800
Rpm
Fuel Consumption
Liters/h
At calculated propeller load exp. 3
US gal/h
110
100
25
90
80
20
Optional equipment
70
Contact your Volvo Penta representative.
60
15
50
Not all models, standard equipment and accessories are
available in all countries. All specifications are subject to
change without notice.
The engine illustrated may not be entirely identical to production standard engines.
40
10
30
20
5
10
0
1000
0
1200
1400
1600
1800
Rpm
Dimensions D12-450 with MG5114SC-E
AB Volvo Penta
SE-405 08 Göteborg, Sweden
www.volvopenta.com
10-2004. © 2004 AB Volvo Penta.
Not for installation
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