Presentation
Volvo Penta’s D4 and D6 is developed from the latest design in modern diesel technology. The engine has com-
mon rail fuel injection system, double overhead camshafts, 4 valves per cylinder, turbocharger, compressor, and
aftercooler. The interaction of these, the large swept volume, and the EVC system results in exceptional diesel
performance combined with low emissions.
Technical description:
Engine block and head
— Cylinder block and cylinder head made of cast-
iron
— Combined ladder frame and balance shafts (D4)
— Ladder frame fitted to engine block (D6)
— Double overhead camshafts
— Oil-cooled pistons with two compression rings and
one oil scraper ring
— Integrated cylinder liners
— Replaceable valve seats
— Seven-bearing crankshaft
— Rear-end transmission
Engine mounting
— Flexible engine mounting
Lubrication system
— Easily replaceable separate full-flow and by-pass
oil filter
— Seawater-cooled tubular oil cooler
Fuel system
— Common rail fuel injection system
— Control unit for processing the injection
— Fine filter with water separator
— Emergency stop device
Air inlet and exhaust system
— Belt-driven compressor with silencer of absorption
type on both inlet and output port
— Air filter with replaceable insert
— Crankcase gases vented into the air inlet
— Exhaust elbow or exhaust riser
— Freshwater-cooled turbocharger
Cooling system
— Thermostatically regulated freshwater cooling
— Tubular heat exchanger with separate large vo-
lume expansion tank
— Coolant system prepared for hot water outlet
— Seawater strainer and easily accessible impeller
pump
Electrical system
— 12V two-pole electrical system
— 115A marine alternator with Zener-diodes to pro-
tect the system from peak voltage, and integrated
charging regulator with battery sensor cable for
maximum use of alternator
— Fuses with automatic reset
Instruments/control
— Complete instrumentation including key switch
and interlocked alarm
— Digital Power Trim instrument with analog or digi-
tal reading
— EVC monitoring panels for single or twin installa-
tions
— Electronic remote control for throttle and shift
— Plug-in connections
Drive
— Complete with transom shield, and installation
components
— Max tilt angle 50° (adjustable)
— Protective zinc anodes to prevent corrosion
— Built-in kick-up function to reduce possible da-
mage, in the event the drive strikes an underwater
object
— Electrical shifting performed by electronic actuator
— Power Trim with one-button operation in twin in-
stallation
— Fully integrated water inlet and exhaust system
— Fully hydraulic power-assisted steering system
— Isolated propellers to prevent corrosion
Reverse gear
— Reverse gear with matched drop center and 8°
down angel for compact installation and minimum
propeller shaft angel. V-drive available
— Bevel gears which resualts in smooth running at
all speeds
— Hydraulically operated clutch for smooth shifting
— Electrical shifting performed by elctromagnetic
valves.
— When under sail propeller shaft can rotate 24
hours without engine start.
— Seawater-cooled oilcooler
Accessories
— An extensive range of accessories are available.
For detailed information, please see Accessory
catalogs.
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