3. Turbocharger noise

Engine supercharging is a way of increasing power without increasing engine size . At present, we no longer design a naturally aspirated diesel engine, as the specific performance would be insufficient for the power requirements of modern vehicles. Environmental imperatives concerning reductions in fuel and CO ₂ emissions are driving the design of engines with better efficiencies. The reduction in engine size makes it possible, on the one hand, to reduce friction losses and, on the...