Volvo Penta D6-330 Auxiliary Inboard Marine Diesel Engine

Description

Drive massive marine hydraulic pumps and high-output electrical generators under constant duty with the Volvo Penta D6-330 Auxiliary Engine. Displacing 5.5L across 6 inline cylinders, this supercharged and turbocharged diesel produces 330BHP at 3,500 RPM and 240BHP continuous at 3,000 RPM. Common-rail fuel delivery demands clean 2-micron filtration, and heavy auxiliary skids require substantial structural mounting foundations.

A parent bore high-grade cast iron cylinder block integrates a rigid ladder frame to absorb continuous auxiliary PTO torques. The single-piece 24-Valve cast iron cylinder head contains dual overhead camshafts with direct valve actuation. Electrical power runs through an isolated 12V system supported by a 3.0 kW starter and a 12V 115A alternator. Dimensions span 45.3in long, 32.4in wide, and 30.7in high, scaling at 1,279 lbs dry. Lube oil sump capacity holds 5.28 US gal.

Key Features of Volvo Penta D6-330

Commercial vessel engineers buy Volvo Penta D6-330 auxiliary diesel engines to drive primary bow thrusters and emergency fire fighting skids. Fleet superintendents select this powertrain for commercial workboat diesel engine repower projects on offshore supply barges.

• Mechanical superchargers provide immediate boost from idle to handle sudden hydraulic PTO pump drag
• Turbochargers maintain sustained charge pressure at rated speeds to deliver full auxiliary generator kilowatts
• Common-rail fuel injection operates at high pressure to optimize auxiliary fuel efficiency and suppress smoke
• Freshwater cooling passages protect the cast iron head from seawater scaling and salt encrustation
• CAN-bus EVC control electronics transmit governor speed commands without mechanical cable backlash or drag
• Flywheel housings connect directly to hydraulic PTO splines, genset alternators, or ZF 85A gearboxes
• Serpentine multi-groove belts maintain positive friction drive on the 12V 115A heavy-duty alternator

Bench Dynamometer Load Test Output

Dynamometer test records confirm 330BHP peak output at 3,500 RPM and 240BHP continuous output at 3,000 RPM under continuous auxiliary ratings. Supercharger and turbo compounding produces 1.80 bar peak intake boost pressure. Freshwater heat exchangers hold engine coolant temperatures at 185°F under continuous maximum power dyno pulls. Engine oil pressure maintains 55 PSI across full operational revolutions. Static engine bed mounting permits up to 30° inclination angles. Crankshaft journal runout remains below 0.0005in TIR to protect bearings against deflection fatigue. Exhaust temperatures stay below 1,260°F.

Field Operation Maintenance Service Rules

Electronic throttle actuators govern auxiliary RPM stability with immediate response to hydraulic pump engagements. Do not install this 5.5L heavy cast iron engine in weight-sensitive planing skiffs or craft lacking secondary 2-micron fuel water separator filtration. Operators must provide clean sea strainer feeds to protect heat exchanger tubes from sand and shell debris.

• Drain engine lube oil and replace spin-on filter cartridges every 200 operating hours
• Inspect raw water pump impellers and check heat exchanger zinc anodes every 150 hours
• Replace the primary 2-micron fuel water separator canister every 250 engine hours

Factory Warranty Shipment Parts List

Volvo Penta provides a 2-Year commercial warranty backed by 3-Year major component structural coverage. The unboxing crate includes the bobtail engine core, 12V 115A alternator, 3.0 kW starter motor, four elastomeric vibration mounts, EVC wiring harness, oil pressure senders, and factory operator maintenance manuals.