Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
ANALYSIS OF THE EFFECTS OF PERIODIC MAINTENANCE OF AGRICULTURAL TRACTORS THROUGH THE METHOD OF EXPERIMENTAL PLANNING
Submission Author:
Luis Eduardo Accordi Ferrari , SP
Co-Authors:
Luis Eduardo Accordi Ferrari, Rodrigo Ghiorzzi Donni, Paulo Smith Schneider, Daniel Dall Onder dos Santos
Presenter: Luis Eduardo Accordi Ferrari
doi://10.26678/ABCM.ENCIT2018.CIT18-0724
Abstract
This study aims to quantify the effects of periodic maintenance of agricultural tractors’ engines on the power measured at its power takeoff (PTO), and its fuel consumption. To do this, we use the design of experiments method, 25 full factorial without replication, totaling 32 independent assays. For the experiment, we use an agricultural wheel tractor, with six cylinder engine, 6.8 liters, rotary fuel pump and direct injection fuel system, turbocharged with intercooler. The control parameters are chosen based on the authors' experience and their levels are defined experimentally. They are: a) external condition of radiator, b) fuel filter condition, c) air filter condition, d) fuel quality and e) engine oil condition. It can be seen that the parameters with the greatest influence on power are the air filter condition, engine oil condition and a second-order interaction between fuel quality and engine oil. They are responsible for variations in power, respectively of, 2.7%, 2.4% and 1.7%, results based on ideal condition. Fuel consumption presents no significant variation in relation to any of the factors studied, which leads to the conclusion that there is no relation between it and the periodic maintenance of the tractor the way it is proposed by this work. Finally, it is shown that with the correct maintenance, since the extreme condition to the ideal condition, increases up to 7% the power provided by the equipment to work in the field.
Keywords
Power takeoff, design of experiments, periodic maintenance, tractor
