07/08/2013

Volvo Penta Launches New D11 Marine Diesel Engines



by Volvo Penta of the Americas

New Engines Provide More Powerful Torque, Improved Drivability, Lower Emissions and Reduced Noise Levels

(CHESAPEAKE, Va.) Aug. 7, 2013 – Volvo Penta announces the introduction of a new line of marine diesel engines based on the proven D11 series.

Offered in three power classes – 625, 670 and 725 hp, the new D11 engines provide more powerful torque, improved drivability and reduced noise levels compared to other engines in these horsepower classes. They also meet the world’s strictest emissions regulations.

“The new D11 series is based on the latest technology within the Volvo Group, and has been optimized for marine use by the Volvo Penta development team. The result is a compact, powerful engine series with new and improved basic design. In addition to a wider range of power classes, the in-line, six-cylinder diesel engines are enhanced with a large number of technical upgrades,” stated Marcia Kull, Vice President, Marine Sales North America, Volvo Penta of the Americas.

“We have further enhanced our twin-entry turbo where each exhaust pulse maximizes charging pressure. This gives an extremely powerful torque already at low RPM. The engine responds instantly to operator commands and provides improved drivability with stronger acceleration,” said Thomas Lantz, Chief Product Manager at Volvo Penta.

“The Volvo Penta D11 will be ideally suited for fly bridge yachts express and sports cruisers. The weight of these boats typically places high demands on the engine performance. The D11’s high torque at low RPMs produces rapid acceleration to plane enhancing safety, fuel efficiency and comfort,” says Lantz. Onboard comfort is also enhanced by the reductions in noise and vibrations. “Thanks to a new and more efficient turbo and air filter with improved noise reduction, we reduce the perceived noise levels significantly with the new D11. At the same time, the robust design helps minimize the onboard vibrations,” said Lantz.


More Power with Less Environmental Impact

The combination of more power with less environmental impact may seem impossible to achieve, but with the new D11, this is exactly what Volvo Penta has managed to accomplish.

 

“With advanced technology we manage to create an optimized air and fuel pressure ratio, which gives very efficient combustion. And with increased after-cooling, we acquire more engine power altogether,” said Lantz.

Thanks to the efficient combustion, the new D11 series complies with the world’s most stringent environmental legislation, U.S. EPA Tier 3, which comes into force in 2014. The particulate emissions are 40 percent lower compared with today’s Tier 2 levels.

Upgraded Basic Construction

The new D11 series will by far be able to live up to our customers’ expectations regarding the qualities that characterize Volvo Penta in terms of safety, reliability and service life.

“We have, among other things, developed a strong and robust engine block together with a new cylinder head with improved cooling, which gives the engine a consistent, optimized service temperature. The result is a very reliable engine with a long life,” said Lantz.

Integrated with the Latest EVC

The engines use the latest generation of the Volvo Penta electronic platform, the Electronic Vessel Control (EVC). The latest generation of EVC enables an additional number of features for increased security and control, and improved functionality.

For Both Shaft and Volvo Penta IPS Installations

The engine will be available for both traditional inboard installations and Volvo Penta IPS. Based on the new D11, the IPS800 and 950 are also launched. In addition to the benefits of more power, they fully utilize the unique advantages of the IPS concept in terms of fuel efficiency, comfort and driving pleasure.

Simple Installation and Service

All engines in the series have the same installation dimensions as before, which is beneficial to the boat builder. All fuel and oil filters, oil dipstick and oil filler are gathered in the back of the engine where they are easily accessible for servicing. This also means that the same engine specification can be used for port and starboard installations.

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Technical data

 

D11-725

Crankshaft output: 725 hp (533 kW) at 2500 RPM
Max torque: 2350 Nm at 1600-2100 RPM
Configuration: In-line, 6-cylinder diesel with electronically controlled unit injectors, twin-entry-turbo and intercooler
Cylinder volume: 10.84 liters
Emissions: EU RCD and U.S. EPA Tier 3

D11-670

Crankshaft output: 670 hp (493 kW) at 2450 RPM
Max torque: 2240 Nm at 1600-2100 RPM
Configuration: In-line, 6-cylinder diesel with electronically controlled unit injectors, twin-entry-turbo and intercooler
Cylinder volume: 10.84 liters
Emissions: EU RCD and U.S. EPA Tier 3

D11-625

Crankshaft output: 625 hp (460 kW) at 2400 RPM
Max torque: 2200 Nm at 1600-2100 RPM
Configuration: In-line, 6-cylinder diesel with electronically controlled unit injectors, twin-entry-turbo and intercooler
Cylinder volume: 10.84 liters
Emissions: EU RCD and U.S. EPA Tier 3

EPA Tier 3 Background

Tier 3 originates from the U.S. Clean Air Act written by the Environmental Protection Agency (EPA) from 1990. In this, a multi-step plan with a number of “tiers” – deadlines for engine manufacturers – was established. Shortly thereafter, the EU adopted a similar multi-step plan. To be approved according to the Tier 3 requirements, the levels of particulate emissions must be reduced by 40 percent and nitrogen oxide emissions must be reduced by 20 percent compared with previously (Tier 2), which means an emission ceiling of 5.8 g/kWh and NOx. The emissions requirements associated with the different tiers are a guarantee that the work toward cleaner air and environment steadily continues.

Lindsy Shrewsberry
Marketing & Communications Specialist
+1 757 3824010
e-mail: lindsy.shrewsberry@volvo.com

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