Abstract
Environmental concern demands that emissions and fuel consumption of vehicles have to improve considerably in the next 10 years. New technologies for gasoline engines, downsizing with high boosting, direct injection and fully variable valve train systems, are being developed. For Diesel engines, improved components including piezobased injectors and particle filters are expected. In parallel with Gasoline and Diesel advanced hybrid and fuel cell power-plants are being investigated. This paper gives a comparative assessment on the different technologies with a prediction of the introduction dates and volumes into the market.