New fuel-saving technologies and NVH refinement of powertrains

Abstract

The ‘ecological conscience’ of consumer, the CO2 reduction imposed by legislation and the low consumption tax policy adopted by majority of countries, motivate car manufacturers to develop new generation of low CO2 emission cars. The reduction of rolling friction (low resistance pneumatics), of air resistance and of overall mass is the design imperative for low consumption vehicles. Still, the most important reduction of fuel consumption and CO2 emission is to be achieved by new generation of powertrain. This implies different new technologies which can represent a marked impact on NVH-behaviour of engines.