Analytic Modeling of Vehicle Fuel Consumption

Abstract

An analytical method of evaluating vehicle fuel consumption under standard operating conditions is presented. In the proposed model, vehicle fuel consumption is separated into two different operating modes: cruising at constant speed and acceleration. In each of these modes fuel consumption is calculated based on the instantaneous engine efficiency, approximated using an analytical function rather than typically considered consumption map. The approximation is based on speed-power decoupling, employing two single dimension polynomials instead of a two-dimensional lookup table. The adequacy and accuracy of the model is verified using experimental calculations. Moreover, it is shown that the effect of various design parameters on vehicle fuel consumption can be studied utilizing the proposed model.

System for Road Vehicle Energy Optimization Using Real Time Road and Traffic Information

“…Depending on the dynamics and detail level of the simulated variables, the models can be classified into quasi-static models and dynamic models. Energy, consumption, performance and emissions studies can be simulated by means of quasi-static models [46][47][48]. A quasi-static fuel consumption modelling can follow either a forwardlooking or a backward-facing approach.…”

Computer-Based Analysis of the Stochastic Stability of Mechanical Structures Driven by White and Colored Noise

“…This is because mathematical models represent approximations to the real result, while having errors in each of the parameters used. Therefore, the more parameters one uses, the more errors are involved, thus making the model less efficient [43].…”

“…He evaluated fuel consumption by finding the product of optimal specific fuel consumption into the sum of the powers of the rolling resistance, air resistance, and inertial acceleration resistance, and then dividing it by the product of the efficiency of transmission with the average speed of the vehicle and the fuel density. In another research, on analytic modelling of vehicle fuel consumption, it has been shown that the fuel consumption can be found by using the calorific value of fuel per 100 km [43]. This was done by finding the sum of energies of the forces required to overcome resistance and the kinetic energy required for episodic accelerations, and then dividing it by the calorific value of the fuel used.…”

Study on the Criteria for the Determination of the Road Load Correlation for Automobiles and an Analysis of Key Factors

“…In this study, we considered five criteria for determining road load tolerance that can be used when a third party verifies road load specifications provided by a manufacturer [34,35]. Table 1 shows the criteria.…”