Fundamental Studies on Exhaust Gas Evaluation Techniques forAgricultural Tractors Engaged in Rotary Tillage Work (Part 3) ——Exhaust Gas Measurement during Engine Torque Loading with a Dynamometer——

Abstract

We studied methods of evaluating tractor exhaust emissions while engaged in rotary tillage, a common agricultural task in Japan. In this report, we investigated the exhaust gas emissions by modeling engine torque during rotary tillage in the field by applying loads with a dynamometer to a tractor PTO shaft. We were able to model the loading method by sorting and applying the system torque components in stepwise fashion, and confirmed that it was feasible to measure emitted gases using this method. It was also evident that the load obtained in two or more fields could be compounded, resulting in time savings. Our result demonstrate that it is possible to apply an average load that represent rotary tillage and other agricultural tasks.