The Volvo Penta D12 is an in-line, six-cylinder marine diesel, launched in 2004. Unit injectors, EDC system, and an extremely sturdy basic design, including a seven-bearing crankshaft are among the solutions employed. The engine featured an electronically governed wastegate turbo, a new-designed heat exchanger, and a new injection system, and a new Engine Management System (EMS-2) that further improves performance and driveability, meeting emission requirements at the time. The D12 was built in the world’s most highly automated diesel engine factory line at the time, with a robotic machining line with computer-controlled audit checks, which ensures the highest quality level. The D12-800 launched a new generation of D-12 engines that, in addition to increased output, were also stronger. The engine block is the same, but every subsystem had major or minor improvements. The most significant engineering was a new turbo, new charge-air cooler, and new electronic management system. The D12 complied with the emission requirements introduced in the EU and USA as from 2006. The turbo pressure is available throughout the entire range of revolutions, and can be engaged without any delay to provide extra power with immediate response. The EVC system, Volvo Penta’s electronic platform for engine control, was available with the later model engines. One of the most important features was an added option for low-speed operations. It reduced the boat’s speed at idling by about half, which provided simplified maneuvering.
