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Orientador: Alberto Adade Filho / Dissertação (mestrado profissional) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica / Made available in DSpace on 2018-08-18T21:11:42Z (GMT). No. of bitstreams: 1 Iskandar_MarcoAntonio_M.pdf: 4356371 bytes, checksum: 8b89db3b0ba0eb163732c9073c792ae9 (MD5) Previous issue date: 2011 / Resumo: A tecnologia de motores diesel tem sido guiada por legislações cada vez mais severas. Para cumprir com estas legislações os sistemas de controle de emissões estão se desenvolvendo rapidamente visando à disponibilização no mercado de produtos que atendam às normas de emissões, mas com economia no consumo de combustível e maior durabilidade e competitividade nos mercados internacionais, em suma melhoria na relação custo x benefício. Neste contexto, é colocada a análise e projeto de um sistema de controle de arrefecimento do motor Diesel, que objetiva controlar a temperatura de água do motor visando à economia de combustível e redução dos níveis de emissões. Assim, o presente trabalho tem como objetivo a análise e projeto de um sistema substituto ao tradicional sistema de arrefecimento (cooling) do motor Diesel disponível e comumente utilizado no mercado atualmente. O sistema mecatrônico em estudo é composto por uma bomba elétrica de água, um ventilador acionado eletricamente, uma válvula termostática eletronicamente controlada e um algoritmo de controle. Este conjunto visa propiciar um controle preciso da temperatura de água do motor Diesel, dessa forma reduzindo as emissões de poluentes e o consumo de combustível, permitindo, ainda, uma resposta rápida no aquecimento em partida a frio e maior durabilidade do motor. Os ajustes do controlador foram calculados por meio de algoritmos de otimização e co-simulação computacional utilizando dois softwares distintos: GT-Cool (GT-SUITE é marca registrada da Gamma Technologies) e Matlab / Simulink (MATLAB/Simulink é marca registrada da Mathworks) / Abstract: The diesel engine technology has been driven by increasingly stringent laws. To comply with these laws the emissions control systems are rapidly developing in the market aimed at providing products that meet future emissions standards, but savings in fuel consumption and greater durability and competitiveness in international markets, improving cost-benefit ratio. In this context, design and analysis of a control system for cooling the diesel engine, aiming to control the engine water temperature accurately, to save fuel and reduce emissions. The present work has as objective to design a mechatronic system as a substitute to the traditional cooling system of the diesel engine commonly used in the market today. The system under study consists of an electric water pump, an electrically driven fan, an electronically controlled thermostatic valve and a control algorithm. This system is intended to provide a control in water temperature of the diesel engine, thereby reducing pollutant emissions and fuel consumption, allowing also a rapid response to heating in cold start. Controller tuning was calculated by algorithmic through optimization and co-simulation using two distinct computational software GT-Cool (GT-SUITE is a registered trademark of Gamma Technologies) and Matlab / Simulink (MATLAB / Simulink is a registered trademark of Mathworks) / Mestrado / Eletrônica / Mestre em Engenharia Automobilistica

Machine tool coolant concentration and pH data.