Green City Car

Start of project 2009-09-01
End of project 2012-08-31

Exploiting the potential of integrated solutions for the control of noise and vibration in vehicles to improve vehicle fuel efficiency and reduce their impact on the environment is the principal motivation behind this project. Today's cars represent a complex compromise between contradictory requirements with regard to safety, exhaust emissions, noise, performance and price. However, since the quality of life, particularly in the urban environment, is heavily influenced by air and noise pollution resulting from road traffic, one of the top priorities for car manfacturers is the reduction of noise and emissions from vehicles, with particular attention currently being focused on CO2. In this regards, the principal vehicle manufacturers in Europe have unanimously agreed to adopt an integrated approach which has as cornerstones the devleopment of more fuel efficient power trains and weight reduction of the vehicle body. Today engine downsizing represents the most direct and cost effective approach to improving fuel efficiency in road vehicles in order to ensure significant reductions on the impact on the environment while still providing acceptable levels of  performance and vehicle "fun-to-drive". However this new generation of engines, while being ideally suited to city vehicle applications, can result in a perceivable degree of deterioration in terms of noise and vibration when compared whith the vehicles currently on the market. Similarly, the mass reduction required to lower CO2 emission and fuel consumption can lead to considerable augmented noise levels,which should be adequately compensated by integrated, light noise abatement means. Improvement of vehicle noise and vibration without affecting other performances is proving to be extremely difficult if not impossible with state-of-the-art technology. Frequencly, new technologies in the fields of smart materials and active control provide potential solutions but have only been proved in the laboratory. One aim of this project would consequently be to integrate such advanced laboratory-level technologies with conventional solutions with direct application to next generation city-car.

 

Last modified: March 11, 2011
Responsible for this page: Gunilla Skog

 SEARCH


CIVIL AND ENVIRONMENTAL ENGINEERING - Chalmers University of Technology - SE-412 96 Gothenburg, Sweden - Tel: +46 (0)31- 772 1000