You can trust our Volvo Penta D4 to provide high reliability, exceptional fuel efficiency and low maintenance cost. This in-line 4-cylinder, 3.7-liter diesel engine features common-rail fuel injection, double overhead camshafts, turbocharged, 12V or 24V DC system, Gears-HS85A/ZF68/HS68IV/HS68A, Stern Drive Available.

Technical description:

Engine block and head

• Cylinder block and cylinder head made of cast iron
• Ladder frame fitted to engine block
• 4-valve technology with hydraulic lash ad-justers
• Double overhead camshafts
• Oil-cooled pistons with two compression rings and one oil scraper ring
• Integrated cylinder liners
• Five bearing crankshaft
• Rear end transmission

Engine mounting

• Flexible engine mounting

Lubrication system

• Replaceable separate full-flow and by-pass oil filter
• Seawater-cooled tubular oil cooler
• Oil level and oil temperature sensors
• Crankcase oil separator, maintenance free unit

Fuel system

• Common rail injection system, 2000 bar
• Electronically controlled central processing system (EMS – Engine Management Sys-tem)
• Fuel pressure sensor that indicates clogging in fuel filters
• Single fine fuel filter of spin-on type, with water separator and water in fuel alarm

Air inlet and exhaust system

• Air filter with replaceable insert
• Crankcase gases vented into the air inlet
• Exhaust elbow or exhaust riser
• Turbo charger, freshwater cooled
• Loss of sea water alarm

Cooling system

• Thermostatically regulated freshwater cool-ing
• Seawater cooled heat exchanger
• Coolant system prepared for hot water outlet
• Seawater impeller pump
• Engine mounted seawater strainer

Electrical system

• Marine alternator (12V/150A or 24V/80A) prepared for Pulse Width Modulation (PWM)
• Automatic fuses for engine, transmission and EVC
• Auxiliary stop switch in front of engine
• Engine available as 12V or 24V
• Power connections and fuses co-located in one connection box on engine

Electronic Vessel Control (EVC)

• Fully integrates the engines, electronics and EVC features with Glass Cockpit
• Electronic shift and throttle as standard
• Electronic steering as option in twin installations
• Plug-in connectors
• Low speed control as option
• Joystick option for twin installation
• Autopilot with Joystick Driving as option with twin installation
• Support for Easy Connect app
• Maintenance Assistant with service alert

Gear box

• Gear box with matched drop center and 8° down angle for compact installation and mini-mum propeller shaft angle. V-drive available.
• Bevel gears which results in smooth running at all speeds
• Hydraulically operated clutch for smooth shifting
• Electrical shifting performed by electromagnetic valves
• When under sail propeller shaft can rotate 24 hours without engine start
• Seawater-cooled oilcooler
• Low speed as option

Option
• U.S.C.G./MED (SOLAS)

Technical Data:

• Product designation : D4-320
• Crankshaft power, kW (hp) : 235 (320)
• Propeller shaft power, kW (hp) : 226 (307)
• Engine speed, rpm : 3600
• Engne displacement, l (in3) : 3.67 (223.7)
• Engine configuration : in-line 4
• Aspiration : turbo, after cooler
• Rating : R5
• Dry weight with ZF68,  kg (lb) : N/A
• Dry weight with HS68IV, kg (lb) : 610 (1345)
• Dry weight with HS68A, kg (lb) : 580 (1279)
• Dry weight with HS85A, kg (lb) : 605 (1334)
• Ratio ZF68 : N/A
• Ratio HS68IV : 1.992 - 2.477
• Ratio HS68A : 2.037
• Ratio HS85A : 2.500
• Voltage : 12V or 24V
• Emission compliance : IMO NOx, EU RCD Stage II, US EPA Tier 3
• Flywheel / flywheel housing : SAE10 /SAE4

Package Includes:

• Volvo Penta D4-320 engine 320 HP
• Starter/alternator 12 V
• EVC 2 powertrain control unit
• 7" display panel
• Throttle Control
• Steering System
• Joystick Control
• Sea water pump, belt drive
• Belt guard
• Mounted air cleaner
• Closed crankcase ventilation system
• Wet exhaust elbow
• Key start/stop switch
• Button panel
• Harness for rudder angle and fuel level input
• Harness 12m