Performance and Emission of Pollutants of an Agricultural Engine With Two Power Take-Off Settings

Schlosser, José Fernando; Farias, Marcelo Silveira de; Estrada, Javier; Santos, Gustavo Oliveira dos; Gil, Emilio

doi:10.1590/1809-4430-eng.agric.v37n2p277-285/2017

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…NRSC and NRTC tests (Ettl et al 2018) are used for tractors. Traction forces in connection with terramechanics was researched (Cutini and Bisaglia 2016), as well as the emissions and fuel consumption during real driving (Ince and Güler 2020) or during dynamometer simulation (Schlosser et al 2017). Souček et al (2017) (2017) was not calculated with different weights of load and we do not have any information about the engine and route profile and this might have caused the differences.…”

Section: Resultsmentioning

confidence: 99%

Calculation model of the tractor transport set - Economic and environmental indicators

Kubín¹,

Pexa²,

Holúbek³

2021

Res. Agric. Eng.

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This contribution presents a calculation method of indicators in agricultural transport. The tractor Zetor Forterra 8641 with a silage trailer was used. Calculations were performed with various weights of transported material: 2.5, 3.6, 5.8, 7.4 and 9.0 tons. The model was created concerning significant parameters of the transport set, engine characteristics and route. It considered splitting of the route into elementary sections, in which important route parameters were regarded as constant. Indicators were defined in every section (fuel consumption, emissions, etc.) and overall values were calculated as a sum. The set with 7.4 t of load reached the lowest unit costs 20.62 CZK·tkm–1, transport output 79.51 tkm·h–1 and unit consumption 0.14 L·tkm–1. The set with the maximum load 9.0 t reached output 86.05 tkm·h–1 but unit costs were 20.68 CZK·tkm–1. Using the maximum capacity was not the most effective option. When the weight of a load increased (from 2.5 to 9.0 t), driving time extended from 0.28 to 0.46 h and hourly transportation output increased from 38.60 to 86.05 tkm·h–1, unit consumption decreased from 0.24 to 0.13 L·tkm–1. Total emissions significantly increased, but unit emissions decreased in average two times for each pollutant.

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Section: Resultsmentioning

confidence: 99%

Calculation model of the tractor transport set - Economic and environmental indicators

Kubín¹,

Pexa²,

Holúbek³

2021

Res. Agric. Eng.

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“…The results obtained in the experiment described in Table 1 showed a significant difference for the parameters ES, FDB, OS, PDB, and EDB. The lowest number of activated remote control valves (1 RCV) provided high FDB, OS, and PDB, which directly interfere with the energy and operational performance of the agricultural tractor (Gabriel Filho et al, 2010;Farias et al, 2017a;Schlosser et al, 2017;Martins et al, 2018;Lopes et al, 2019), with no statistical difference in SLP and HFC.…”

Section: Resultsmentioning

confidence: 99%

Interference of the Number of Remote Control Valves in Use on the Energy Performance of an Agricultural Tractor With Productivity Management

et al. 2020

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The hydraulic remote control system allows the transfer of energy from the engine through a flow of hydraulic oil to engines and implements pulled by agricultural tractors, which can interfere with its energy and operational performance. This study aimed to evaluate the interference of the number of remote control valves in use on the operational and energy performance of an agricultural tractor, using a productivity management system. The experiment was conducted in a strip-plot design, with five replications and three treatments, which consisted of the number of remote control valves in use (1, 2, or 3), totaling 15 experimental units. The results were subjected to normality and homogeneity tests and analysis of variance, followed by the Tukey test when it was significant. The highest number of valves in use interfered with the operational speed, power and efficiency on the drawbar, specific fuel consumption, and engine thermal efficiency, thus reducing the energy and operational performance of the agricultural tractor.

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“…O uso de etanol em automóveis, comum em países como Brasil, EUA e Suécia, é capaz de reduzir as emissões de poluentes e de material particulado (diâmetro < 50 nm) quando comparado à gasolina e óleo diesel, bem como aumentar a concentração de ozônio com implicações diretas a saúde e mudanças climáticas (SALVO et al, 2017). Alguns modelos comerciais de tratores agrícolas apresentam configurações de economia de combustível em comparação com a operação regular; no entanto, as emissões (ex: CO, CO2, NOx e Hidrocarbonetos) são maiores para condições de relação potência/torque elevadas na configuração econômica (SCHLOSSER et al, 2017).…”

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Ensaio De Torque E Consumo De Combustível De Uma Motosserra Utilizando Três Misturas De Biocombustível

2019

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ENSAIO DE TORQUE E CONSUMO DE COMBUSTÍVEL DE UMA MOTOSSERRA UTILIZANDO TRÊS MISTURAS DE BIOCOMBUSTÍVEL ROBSON LEAL DA SILVA1, YURI BRITTO PERISSINOTTO2, SÉRGIO RENATO DA SILVA SOARES2, MARCELO MENDES VIEIRA2 1 FAEN - Faculdade de Engenharia, UFGD - Universidade Federal da Grande Dourados, Rodovia MS-270, km 12, CEP: 79.804-970, Dourados-MS, Brasil. e-mail: rlealsilva@hotmail.com 2, 3 e 4 ICAT - Engenharia Mecânica, UFR - Universidade Federal de Rondonópolis, Rodovia MT-270, km 06, CEP: 78.735-901, Rondonópolis-MT, Brasil. e-mail: yuribritt@hotmail.com; sergeva2004s@yahoo.com.br; mmendes@ufmt.br RESUMO: Motores de combustão interna de pequeno porte são utilizados em diversas atividades agrícolas, dentre os quais motosserras e similares. O desempenho destas máquinas térmicas é modificado em função do teor de etanol na mistura combustível, o qual é atualmente 27,5% na gasolina comercializada no Brasil. O objetivo é identificar as melhores condições de desempenho experimentais (torque e consumo de combustível) de uma motosserra ciclo Otto. A metodologia foi baseada em normas técnicas; uma bancada dinamométrica foi construída para as condições operacionais. Cada ensaio foi repetido três vezes e analisado os dois mais coerentes; com quatro rotações distintas, três diferentes cargas e três amostras de misturas combustíveis - (A)73%G/27%E, (B)60%G/40%E, e (C)50%G/50%E. Os resultados são curvas características e as seguintes conclusões: i) Em rotações até 8.200 RPM o combustível (A) apresentou o menor consumo; acima de 8.500 RPM o combustível (B) apresentou maior torque e menor consumo; e o combustível (C) mostrou-se inadequado para quaisquer das condições ensaiadas; ii) Comparando as condições de carga máxima e mínima, o consumo é praticamente duplicado, e o torque é ampliado em cerca de 4 a 5 vezes; iii) Ocorre aumento significativo do consumo acima de 10.000 RPM, nas condições de carga intermediária com combustíveis A e B, e de carga máxima para todos os combustíveis. Palavras-chaves: Máquinas térmicas, Motor de combustão 2T, Biocombustíveis, Engenharia experimental. TORQUE AND FUEL CONSUMPTION TESTS FOR A CHAINSAW USING THREE BIOFUEL BLENDS ABSTRACT: Small-scale internal combustion engines are broadly used in agricultural activities, including chainsaws and similar equipment. The performance of these thermal machines is modified according to the ethanol content in the fuel blend, which is currently 27.5% in commercial gasoline in Brazil. The aim of this study was to identify the best experimental performance conditions (torque and fuel consumption) for an Otto cycle engine chainsaw. The methodology was based on technical standards and a dynamometric workbench was built to match the operating conditions. Each test was repeated three times and the two more coherent ones were analyzed; with four distinct rotations, three different loads and three samples of fuel blends - (A)73%G/27%E, (B)60%G/40%E, and (C)50%G/50%E. The results are characteristic curves and the following conclusions were i) in rotations up to 8,200 RPM the fuel (A) presented the lowest consumption; Above 8.500 RPM the fuel (B) showed higher torque and lower consumption; and the fuel (C) proved inadequate for any of the conditions tested; ii) comparing the maximum and minimum load conditions, the consumption is practically doubled, and the torque is enlarged by about 4 to 5 times; iii) There is a significant increase in consumption above 10,000 RPM, at the intermediate load condition with fuels A and B, and at maximum load for all fuels. Keywords: Thermal machines, 2-stroke engine, biofuels, experimental engineering.

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Performance and Emission of Pollutants of an Agricultural Engine With Two Power Take-Off Settings

Cited by 3 publications

References 13 publications

Calculation model of the tractor transport set - Economic and environmental indicators

Calculation model of the tractor transport set - Economic and environmental indicators

Interference of the Number of Remote Control Valves in Use on the Energy Performance of an Agricultural Tractor With Productivity Management

Ensaio De Torque E Consumo De Combustível De Uma Motosserra Utilizando Três Misturas De Biocombustível

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