Abstract
Recently, the development of future gasoline engine technology mainly has been focused on significant fuel economy improvements. In parallel, authorities are discussing more stringent emission standards. R&D activities are targeting to combine both aspects, including the markets expectations in terms of performance, comfort and costs.
FEV is pursuing different technical approaches to increase fuel efficiency of gasoline engines. One is the DISI engine, that exhibits a remarkable improvement of part load fuel economy as well as some full load benefits. Another is the full variable valve train, that is enabling a huge lot of measures to optimize engine operation according to any operational circumstances without compromises, including throttle-free operation. As a third alternative, downsizing in combination with high pressure supercharging is a promising means to reduce fuel consumption.