Abstract
KEYWORDS:
motor vehicle, fuel economy, weight reduction, rolling resistance, air drag coefficient, transmission, regenerative braking, CO2 emission
ABSTRACT:
The future emission legislation (Euro IV and Euro V) will require simultaneous reduction of fuel consumption (and, consequently, CO2 emission) and toxic exhaust emissions. The amplification of the greenhouse effect exerts an increasing pressure upon the process of improving and modernizing the motor vehicle.
In this paper, a number of solutions were tested, such as weight reduction, improvement of the engine efficiency, optimization of the running states for the powertrain at all vehicle speeds, regenerative braking, idle shut off etc. The main goal of the research presented in this paper is to emphasize the individual and joined influences of some key parameters upon the fuel consumption for two representative vehicles (one from mid-class and another from compactclass).
The influence of the considered factors upon the vehicle fuel economy was studied with an original computation model by taking into account the European test cycle MVEG-A.