Estudio de la gestión electrónica de un vehículo Audi Q5 con sistema de inyección directa estratificada de gasolina con turbo alimentación (TFSI), en diferentes condiciones

Abstract

The progress of automotive technology has been evolving to meet various society requirements, such as increasing torque, greater power, and fuel efficiency. It fulfills all these expectations while adhering to regulations that govern the emission of pollutants. It has led to the introduction of various technologies, such as Downsizing, which aims to make engines much smaller and lighter while ensuring that they provide the same characteristics as the robust and large engines of the past. The mentioned technology has enabled small engines to incorporate a direct injection system combined with a turbocharger, the same technology known as TFSI. To conduct the study of the injection management of the 2012 AUDI Q5 vehicle and analyze its operating modes under varying loads, an experimental methodology was employed. The study involved the analysis of oscillograms for the Injector, Throttle, APP (Accelerator Pedal Position), and CMP (Camshaft Position), with load percentages ranging from ±20% established for the investigation. To determine the operating modes executed by the MCI (Modular Combustion Injection), including stratified, homogeneous stratified, lean homogeneous, homogeneous, and homogeneous pre-detonation. It was found injection pulses ranging from 0.908ms to 4.650ms depending on the load required by the MCI. On the other hand, the existing operating modes are as follows: homogeneous stratified, lean homogeneous, homogeneous, and homogeneous pre-detonation. The stratified mode could not be determined because this operating mode comes into play when the engine is in a Wide Open Throttle (WOT) state, and the various tests conducted were performed under on-road conditions.