Development of a Model for the Estimation of Exhaust Gas Recirculation in a Spark Ignition Engine

Abstract

Due to environmental pollution, the automotive industry is forced to meet with lowered emission demands legislated by the government. Improved technologies for engines control are essential. In recent years, the use of Exhaust Gas Recirculation (EGR) in Diesel engines has contributed to reducing emissions and achieve the limit. Currently being developed gasoline engines that work with the EGR system, which not only reduce the environmental impact if not simultaneously decreases the fuel consumption. The aim of this thesis is to propose a new computational model for the control valve that regulates the exhaust gas recirculation passage through the low pressure loop (LPL). Data provided by test bench is crucial for the model verification phase in order to compare the real data against the data obtained through the software.