A measurement-based simulation of in-service fuel economy for commercial vehicles

The equipment, methods and results of fuel consumption tests, and the parametric studies of in-service fuel economy simulation are described. The simulation is based on measurements by a unique laboratory test facility, and aims to get fuel saving measures at the development stages of vehicles. Although a human element is important especially on urban routes, this simulation in which the driver's factor was simplified was found to give satisfactory predictions of in-service fuel economy for commercial vehicles over representative highways in Japan.