The SIMULCO Software: Description Of Modelling And Examples Of Application

TLDR: In this paper, the authors combine engine emissions maps with engine operating conditions as calculated by a vehicle simulation model to assess the pollutant unit emissions for road vehicles, using Windows on a PC microcomputer, taking into account: the vehicles characteristics (engine, transmission, mass, aerodynamics); various operating parameters, such as the vehicle load or the use of accessories (ligthing, air conditioning, etc.).

Abstract: To assess the pollutant unit emissions for road vehicles, we combine engine emissions maps with engine operating conditions as calculated by a vehicle simulation model. The SIMULCO software, using Windows on a PC microcomputer, takes into account: the vehicles characteristics (engine, transmission, mass, aerodynamics ...); various operating parameters, such as the vehicle load or the use of accessories (ligthing, air conditioning ...); the trips characteristics (road gradients and curves, speed limits, stops); and the drivers characteristics (throttle opening, engine revolution speeds ...). This model calculates instantaneous operating conditions, in particular the engine torque and speed, wich in turn enables the calculation of pollutant emissions (CC>2, CO, HC, NOx, particulate) and of fuel consumption. It offers three possibilities: firstly driver simulation, where operating conditions and the vehicle dynamics are dependent on driving practice; secondly the kinematic following, as the case of a driving cycle, where the vehicle dynamic is imposed; and thirdly the calculations at steady speed. Results show the great influence on fuel consumption and pollutant emissions of vehicle mass, vehicle speed, road gradient, air conditioning use ..., for different kinds of vehicles travelling on various trips or driving cycles.