Simple Comprehensive hensive Fuel Consumption and CO2 Emission Model based on Instantaneous Vehicle Power

摘要

The majority of fuel consumption models use vehicle tractive power and/or velocity asexplanatory variables. These models appear to be simple and easy to implement, however theysuffer from two major drawbacks, namely: (a) the use of vehicle specific power results in a bangbang control (i.e. the optimum fuel consumption results from a full throttle acceleration) if higherorders of power are not considered in the model; and (b) the calibration of the model parameterscannot be done using publicly available data and thus requires field data collection for eachvehicle. Consequently, the research presented in this paper develops two simple fuelconsumption models that do not result in a bang-bang control system and that can be calibratedeasily using publicly available data. Specifically, the models can be calibrated using theEnvironmental Protection Agency city and highway fuel economy ratings that are publiclyavailable. The models are demonstrated to estimate vehicle fuel consumption rates consistentwith in-field measurements (coefficient of determination above 0.90). Finally, a procedure forestimating CO_2 emissions is developed producing emission estimates that are highly correlatedwith field measurements (greater than 0.98). The development of this model attempts to bridgethe existing gap between traditional power-based fuel consumption models and vehicleoperational control systems such as fuel-optimized cruise control systems, real-time eco-drivingsystems, and adaptive cruise control systems on passenger cars using road topographyinformation.