Method for Fuel Prediction for Specific Tractor Models

Abstract

Several methods for fuel consumption prediction have been used: some methodologiesare generally based on power and others are for individual engines which require extensive enginetesting to verify. Grisso et al. (2004) reviewed the current fuel consumption data from ASAEStandards and compared it to 20 years of Nebraska Tractor Test Lab (NTTL) data. They alsodeveloped a generalized model that predicted fuel consumption during full and partial loads andunder conditions when engine speeds were reduced from full throttle.<br><br>Generalized models are very useful for budget and management scenarios, but may not have theability to compare fuel consumption for several potential configurations such as turbocharging and airdensification models. The objective of this paper is to develop a method that uses the NTTL data fora specific model to predict fuel consumption for full and partial loads and for reduced throttleconditions. These equations can be used demonstrate the fuel savings for different operating andloading conditions. This method was compared with the generalized model and actual NTTL fuelconsumption data. The results showed that 88% of the fuel comparisons had an improved predictionwith the new methodology over the generalized model. An example will be applied to a farmeroperated tractor.