Presented in 2011 Volvo Penta This is the most powerful Aquamatic diesel engine with Z-drive from this manufacturer. Now, around a year later, it has undergone a minor overhaul. The engine block with its six cylinders, which are arranged in series, has not changed. The displacement of 5.5 litres also remains the same.
Only the electrics, intercooler and turbocharger exhaust were improved and adapted. The Swedish technicians carried out the latter work on the electrics due to the introduction of the new EVC-E, which allows the skipper to drive either with a steering wheel and gearstick or via the joystick control, which is subject to a surcharge, in conjunction with the electric steering, which is also not standard.
In order to increase fuel efficiency, Volvo Penta is installing a larger intercooler from model year 2012, which helps to reduce the intake air temperature - and thus increase the oxygen content. The turbocharger exhaust gas elbow of the D6-400 drive has a temperature measuring probe to monitor engine cooling. If the value rises above the limit set by Volvo Penta, the electrical system sounds the alarm. According to the manufacturer, this is intended to inform the skipper in good time if the cooling water openings are covered or blocked.
