Innovative solutions to respect the environment
It may seem strange but it is not enough for Maserati to produce engines that are the most powerful, high-performing and ‘musical’ in the world. The recent objectives of the Powertrain Maserati department, overseen by engineer Paolo Martinelli, have been geared towards even more energy-efficient engines. These power units are high performing but have notably lower consumption levels and emissions.
“It is a difficult challenge but one that excites me”, smiled Martinelli. Martinelli started by making significant modifications to the 4.7 litre V8 from the Maserati GranTurismo MC Stradale, changes that were then introduced to the engines from the GranTurismo Sport, GranCabrio and GranCabrio Sport.
Many of the improvements to the original engine from the GranTurismo range derive from the ‘low friction’ programme. As the tag suggests, the modifications made were to reduce friction, including the revision of the oil sump fluid dynamics courtesy of the addition of mono-directional valves. Another introduction was the use of special Diamond Like Carbon (DLC) to coat the camshaft tappets and lobes, a change that significantly improved the smooth running of mechanical parts, limiting energy loss.
The roar of a Maserati engine is something we could never lose.
Even the exhaust system pressure was reduced, again upping efficiency: “With less pressure in the exhaust system”, outlined Martinelli, “the distinctive Maserati sound is preserved but with the consumption of much less energy. The roar of a Maserati engine is something we could never lose”. To conclude, an enhanced injection set up and dedicated mapping have optimised the combustion. This brings higher power output but reduced consumption CO2 emissions.
Seeking constant improvements, Maserati’s future aim to bring down its cars’ carbon footprint while maintaining their true sporty nature is even more ambitious: “In terms of engine efficiency, we will not be satisfied with 1-2%. In time, in five to ten years, we want ten times as much”, wrapped up a confident Martinelli.
An important step in this direction has already been taken with the innovative twin turbo engine fitted to the new Quattroporte. It is a technological gem in terms of efficiency and performance.