An application of OBD II wifi diagnostics to the study of vehicle fuel consumption in real operating conditions

Abstract

Actual fuel consumption of a car (ACFC) in real conditions is often higher than that reported by vehicle manufacturers. Accurate determination of ACFC and economic operating mode will help consumers and society to reduce fuel costs and emissions. Determining ACFC is quite difficult due to the need to measure fuel consumption, time, distance traveled and load. This article presents the solution of using the OBD II multi-function diagnostic tool to determine ACFC under actual operating conditions. Experimental results for the Hyundai i20 prove that the solution is completely applicable. ACFC is actually 16% higher than that reported by vehicle manufacturers. With acceleration in the city, ACFC is 62% higher than that in operating modes in the suburbs. In accelerated pedal modes, ACFC will rise several times higher than that in steady modes. ACFC in accelerated pedal modes on slopes can increase 125% compared to that in other operating modes.