The new D12 generation: Stronger. Faster. Cleaner01/08/2005
When Volvo Penta D12 was introduced five years ago, it quickly became the market leader among 12-liter diesel engines.
Now it’s time for the second generation of this successful engine program.
“The engine block is the same as before, but we have otherwise gone through every subsystem and made major or minor improvements. The most significant engineering news is a new turbo, new charge-air cooler and new electronic management system. We conducted a total review and matched all parts with each other, which enabled us to increase the power output and torque,” says Anders Hård, project leader at Volvo Penta.
Smoke is gone
The D12 is already well known for its good environmental features – but in the new generation, emission levels have been reduced to even lower levels. Virtually no smoke is created – thanks to a more effective charge-air cooler that maintains a constant induction air temperature and an improved electronic control system. The new D12-800 complies with the emission requirements introduced in the EU and USA as from 2006.
Smart turbo provides effective kick
The D12 is perhaps best known for its massive torque, which provides acceleration that is difficult to match, even with a 60-foot fly bridge boat. With its intelligent new turbo, the engine’s torque feature is even better.
“The waste-gate, which is the valve that regulates the charge pressure generated by the turbo, is controlled by the engine’s electronic control systems. The turbo pressure is available throughout the entire range of revolutions, and can be engaged without any delay whatsoever to provide extra power with immediate response. The driver is able to accelerate or increase the power quickly in rough waters.”
Low speed option
The EVC system, Volvo Penta’s electronic platform for engine control, is also available in a new generation. One of the most important new features is an added option for low-speed operations. It reduces the boat’s speed at idling by about half, which provides simplified maneuvering. The low-speed function is totally integrated in the EVC system and managed by the driver with the conventional control.
The increase in power from 715 to 775 hp will enable Volvo Penta to further strengthen its positions in this important segment. In most cases, the D12 is installed as a twin-engine installation in fly bridge boats and sport cruisers ranging from 50 to 70 feet. An important segment of a growing market in which Volvo Penta is already a market leader.
|Crankshaft effect||775 hp at 2,300 rpm|
|Maximum torque||3,000 Nm at 1,400 rpm|
|Configuration||In-line 6-cylinder diesel with electronically
controlled unit injectors, 4-valve design,
turbo and charge-air cooler
|Cylinder volume||12.1 liters|
|Transmissions||Electronically controlled, hydraulic reverse
gear and V-drive
|Weight||1,400 kg (excl transmission)|
|Emissions||Complies with the emission requirements
introduced in the EU and USA as from 2006.
For further information, please contact
AB Volvo Penta,
phone: +46 31 66 84 18,
E-mail: ann-charlotte [dot] emegard [at] volvo [dot] com