Volvo Penta’s new generation D4 and D6 marine engines power big improvements

Volvo Penta´s proven D4 and D6 marine engines get a full update that delivers more power, increased reliability and lower cost of ownership. Available from 150-480 hp.

1860x1050-D6-480-inboard

D6-480 Inboard Hotside

With over 100,000 units already powering boats worldwide the new generation D4 and D6 engines are set to extend Volvo Penta’s technical advantages further. The 3.7 liter D4 and the 5.5 liter D6 engines are designed and built solely for marine purposes. A large portion of the engines have been reengineered to deliver on the increasing demand for greater reliability and more powerful engines. Available from 150-480 hp, these engines are part of fully integrated systems – from helm to prop – perfectly matched to transmissions covering IPS, Aquamatic sterndrive, inboardshaft and water-jet installations.

Comprehensive overhaul
“The list of performance upgrades are lengthy and includes a new engine management system, new fuel injection system, new turbocharger and a new supercharger,” says Petter Andolf, Chief Project Manager for the D4/D6. “The cylinder head, pistons, and valves are reengineered to withstand higher torque as well as meeting higher reliability and durability requirements.”

The changes are more than a facelift, with the majority of components having been reengineered. The D4 and D6 deliver performance outputs of between 150 to 480 hp. In top specification the D4 now has a maximum output of 320 hp, while the D6 in top spec boasts 480 hp. Offering up to10% more power across the range, these engines are also more fuel efficient – between 1% to 7%.

Better by design
“The majority of the components are reengineered to manage the increased power as well as reaching the extended reliability targets,” says Ingela Nordström, Product Manager for the D4/D6 engines. “For instance, the cylinder head, piston and crankshaft are all stronger by design and new materials has been introduced such as a Diamond Like Carbon (DLC) coating on the piston pin to reduce friction and increase durability. The common rail fuel injection system now features higher pressure – 2,000 bar. Controlled by a new Engine Management System, this enables more precise calibration of parameters controlling the injection, so the engines run even smoother and are more fuel efficient.”

Improved maintenance
The new generation D4/D6 offers reduced maintenance costs, thanks to extended service intervals, fewer service items, and simpler maintenance operations. The upgraded Electronic Vessel Control (EVC) system meanwhile, delivers improved service capabilities through an onboard service assistant that provides information about time left to next service.

Ease of installation
Each propulsion system comes as one complete package. The installation dimensions are largely the same as the previous generation.

All specifications are available in either 12 or 24V.

New D4/D6 technical specifications: IPS

D4D6

HP

RPM

Rating

D6-IPS400

300

3,300

4

D6-IPS450

340

3,400

4

D6-IPS500

380

3,500

4

D6-IPS600

440

3,700

5

D6-IPS650

480

3,700

5

 

New D4/D6 technical specifications: Sterndrive

D4D6

HP

RPM

Rating

D4-150A

150

3,400

4

D4-230A

230

3,500

4

D4-270A

270

3,500

4

D4-300A

300

3,500

5

D4-320A

320

3,600

5

D6-300A

300

3,300

4

D6-340A

340

3,400

4

D6-380A

380

3,500

4

D6-400A

400

3,500

5

D6-440A

440

3,700

5

 

New D4/D6 technical specifications: Inboard

D4D6

HP

RPM

Rating

D4-175 I

175

2,800

4

D4-230 I

230

3,400

4

D4-270 I

270

3,500

4

D4-300 I

300

3,500

5

D4-320 I

320

3,600

5

D6-300 I

300

3,300

4

D6-340 I

340

3,400

4

D6-380 I

380

3,500

4

D6-440 I

440

3,700

5

D6-480 I

480

3,700

5

 

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For more information, please contact:

Jennifer Humphrey
Brand, Communication & Marketing
AB Volvo Penta
Tel: int +46 (0) 31 323 30 55
Email: jennifer [dot] humphrey [at] volvo [dot] com

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