Development of an Intelligent Fuel Consumption Test System for Vehicle Based on Carbon Balance

This paper introduced theoretical model of calculating fuel consumption by carbon balance method. The flow measurement module was designed to test the flow of diluted exhaust. Also, gas analyzer was designed to measure the concentration of gas which contain the element of carbon. The exhaust gas dilution ratio could be changed through changing the speed of the electric motor which is regulated by the frequency converter based on opening exhaust dilution sampling technology. The software which could be used to correspond and measure checked data online was developed by VB and C. The experiments showed that the system had a high accuracy, well stabilization and reliability. It is important to evaluate and monitor fuel economy and emission performance on vehicle.