The compromise in reducing exhaust emissions and fuel consumption from a Diesel CVT powertrain over

Modern integrated powertrains allow great scope for the improvement of emissions and fuel consumption by careful optimisation of the engine speed and load selected to deliver the demanded power. A simple simulation technique is presented for the prediction of fuel economy and emissions from a passenger vehicle over typical drive cycles. The simulation may be used to investigate alternative software and generic hardware configurations at an early stage of development. Results are presented which demonstrate several steps that could improve the emissions performance of a vehicle equipped with an integrated Diesel/CVT powertrain.