Author(s)

J.-P. Roumegoux

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

Keywords