A Transient Fuel Consumption Model for Non-road Mobile Machinery

The transient fuel consumption model was based on a semi-static model and extended with transient correction factors for both changes in engine speed and torque. A general conclusion of the work was that fuel consumption could be accurately estimated even during operations that are largely transient in nature. Moreover, the results showed that the model developed for transient fuel consumption could also be applied to emissions of carbon monoxide, hydrocarbons, nitrogen oxides and particulate matter. The average difference between recorded and calculated fuel consumption and emission amounts decreased from approximately 30% for the semi-static model alone down to about 5% when it was extended with the transient correction factors.