Abstract
The use of fuels for agricultural Diesel engines cycle, both of mineral origin (Diesel) or vegetable and animal origin (biodiesel) can significantly alter its performance. Therefore, the aim of this study was to quantify the change in torque, power and consumption of agricultural Diesel engine fuel using minerals and vegetables fuels. It was used a tractor power take-off coupled to a magnetic brake dynamometer (for measuring speed and torque for subsequent calculation of power), and a flow meter (for measuring the hourly fuel consumption and specific fuel consumption calculation). Eleven different fuels (S10 mineral diesel with 5%, 10%, 15%, 20% and 50% biodiesel and mineral diesel S500 with 5%, 10%, 15%, 20% and 50% biodiesel, have been used pure biodiesel B100). The results indicate that the increase of biodiesel in mineral diesel reduces torque and power, increases the specific fuel consumption and practically does not change the hourly consumption. This reduction in torque and power occurs with greater intensity in Diesel S10. Additions of 10% biodiesel in mineral diesel reduces the maximum torque 1.65 Nm (0.6%), the maximum power at 0.33 kW (0.6%) and increases the specific fuel consumption of 3.6 g kWh -1 (1.3%).
Highlights
Agricultural mechanization uses basically Diesel internal combustion engines, which require energy stored in liquid form, as most agricultural operations are carried out in motion, for tractors, harvesters, and self-propelled sprinklers, among others
There is underway in Brazil a reduction in the sulfur content in mineral diesel that can reach up to 10 mg L-1 (10 ppm - Diesel S10) and the most widely used in agriculture with 50 ml L-1 (Diesel S500)
Some studies show that the use of pure biodiesel in vehicle diesel cycle engines reduces the torque and the power generated (MAZIERO et al, 2006; OZSEZEN et al, 2009; BUYUKKAYA, 2010; FIORESE et al, 2011; NIETIEDT et al, 2011) and increases the time consumption and minimum specific consumption (GODESA, et at. 2010; NIETIEDT et al, 2011; REIS et al, 2013; ÖZENER et al, 2014)
Summary
Agricultural mechanization uses basically Diesel internal combustion engines, which require energy stored in liquid form, as most agricultural operations are carried out in motion, for tractors, harvesters, and self-propelled sprinklers, among others. Much of this fuel is mineral, which is from finite and non-renewable source. Some studies show that the use of pure biodiesel in vehicle diesel cycle engines reduces the torque and the power generated (MAZIERO et al, 2006; OZSEZEN et al, 2009; BUYUKKAYA, 2010; FIORESE et al, 2011; NIETIEDT et al, 2011) and increases the time consumption and minimum specific consumption Some studies show that the use of pure biodiesel in vehicle diesel cycle engines reduces the torque and the power generated (MAZIERO et al, 2006; OZSEZEN et al, 2009; BUYUKKAYA, 2010; FIORESE et al, 2011; NIETIEDT et al, 2011) and increases the time consumption and minimum specific consumption (GODESA, et at. 2010; NIETIEDT et al, 2011; REIS et al, 2013; ÖZENER et al, 2014)
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