Estratificación de un motor de inyección directa a gasolina al variar la altitud.//Stratification of a gasoline direct injection to vary altitude.

Julio Leguísamo-Milla, Santiago Celi-Ortega, Edilberto Llanes-Cedeño, Juan Rocha-Hoyos

Resumen


En este artículo se desarrolla una metodología experimental con el objeto de determinar la estratificación de la mezcla aire- combustible que se produce en un motor de inyección directa a gasolina, que puede ser homogénea, homogénea pobre y estratificada. Al variar el nivel de altura geográfica en el vehículo de 0 a 4000 metros de altura con respecto al nivel del mar. Determinando cuáles son los parámetros que inciden directamente en la estratificación de la mezcla aire combustible conocidos como modo de trabajo, mediante el estudio del sistema GDI y la aplicación de una prueba experimental dinámica en base a normas y protocolos desarrolladas por la SAE. Utilizando un escáner automotriz de última generación y un GPS, aplicados a un vehículo MAZDA CX-5. Los resultados de las pruebas realizadas revelan cuando se producen los modos de trabajo homogéneo pobre, homogéneo y estratificado en las pruebas. Además, indican cómo influye la variación de la altura en la selección de estos modos de trabajo cada 500 metros de altura y muestran cómo se puede identificar cada modo de trabajo con el escáner mediante la línea de datos, y entender los cambios en el funcionamiento debido a la variación del modo de trabajo.

 

Abstract

In this article an experimental methodology is developed in order to determine the stratification of the air-fuel mixture produced in a gasoline direct injection engine, which can be homogeneous, lean homogeneous and stratified. By varying the level of geographical height in the vehicle from 0 to 4000 meters above sea level. Determining which are the parameters that directly affect the stratification of the fuel air mixture known as working mode, through the study of the GDI system and the application of a dynamic experimental test based on standards and protocols developed by the SAE. Using an automotive scanner of last generation and a GPS, applied to a MAZDA CX-5 vehicle. The results of the tests carried out reveal when poor homogeneous, homogeneous and stratified working modes are produced in the tests. In addition, they show how height variation influences the selection of these working modes every 500 metres in height and show how each working mode can be identified with the scanner via the data line, and understand the changes in operation due to variation in working mode.


Palabras clave


inyección directa gasolina; Mazda cx-5; modo homogéneo;variación de altura

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Referencias


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DOI: http://dx.doi.org/10.29076/issn.2528-7737vol12iss30.2019pp46-56p






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