Energy Audit on a Two-Litre Saloon Car Driving an Ece 15 Cycle from a Cold Start

Abstract

In an effort to identify the aspects of vehicle operation which have most influence on fuel consumption during the ECE 15 driving cycle an energy audit was carried out on a two-litre saloon car driving such a cycle. The most interesting results to emerge were that, in the first cycle, 12 per cent of the fuel passed through the engine either partially or completely unburnt, 8 per cent emerged as useful work, and 60 per cent was used to warm up the engine and transmission, while 10 per cent was rejected in the exhaust gas as heat.