Influence of Environmental Changes Due to Altitude on Performance, Fuel Consumption and Emissions of a Naturally Aspirated Diesel Engine

The present study shows the effects of environmental conditions (atmospheric temperature, pressure and relative humidity) due to altitude changes on performance, fuel consumption emissions in a naturally aspirated diesel engine. Due altitude, atmospheric are altered, mainly air density, associated hydrostatic pressure, temperature profile humidity nitrogen/oxygen ratio, thus modifying engine intake conditions. considers from sea level 2500 m above level, which representative orographic Ecuador. As main part this research, parametric variation is carried out AVL BOOST™, showing mean effective specific pollutant (CO2, NOx, CO soot). at regional (change an another) local (changes anticyclone or storm, humidity). quantitative expressed form sensitivity coefficients, e.g., change output variable humidity. In addition, several global correlations have been obtained provide analytical expressions summarize all results obtained, separate effect each performance variable.