Diseño e Implementación de un Prototipo de Escáner Automotriz, con Visualización de Datos en Tiempo Real y Cálculo de Parámetros Indicados y Efectivos de un Motor de Combustión Interna

Abstract

The main goal of this project focuses on the design of a prototype automotive scanner that allows communication with the engine control unit (ECU) of a vehicle, in order to receive data from it, interpret them, interact with the vehicle’s computer and mathematically generate the calculations of indicated and effective parameters of the engine. An intuitive graphic interface is developed, based on the Gedis guide, generating in this way a correct design of the human machine interface.The design begins with an analysis of the commercial scanners in our environment, proceeding with the selection of the elements, based on the technical requirements that the prototype must comply; these requirements are obtained through the quality function deployment (QFD), defining the main functions of the prototype: Calculation of effective parameters, reading and deletion of fault codes and reading of data flow. In order to comply the necessary requirements, the Arduino® and SparkFun® electronic cards are selected for data acquisition and interpretation. On the other hand, the visualization and the human machine interface are developed in PC in the Matlab® software. Validation in the calculation function of engine parameters obtained by the prototype was performed with a calibrated and certified equipment, which provides reliability to the results of the prototype presented. This equipment is the dynamometer of the Technological Transfer Center for Training and Research in Control of Vehicle Emissions. The validation of the other functions of the prototype is carried out with the Autel MaxiSys MS906.