Software para el cálculo de la potencia, torque, emisiones contaminantes e economía de combustible en un motor convertido a gas natural.

Abstract

The present work was focused to characterize and give an answer to the concern regarding designing or adapting bi-fuel systems to be installed in gasoline engines. The gasoline engines reduced the maximum performance of the natural gas due to reduced compressor ratios to handle knock characteristics of the gasoline fuel. One of the biggest advantages of the natural gas against gasoline is regarding CO2 emissions; the natural gas typically emits much less CO2, although this big advantage, experimental data show that the performance of other important parameters is reduced. For this study, it was used a dynamometer engine, a V8 gasoline was instrumented and adapted to use the natural gas system as bi-fuel system. Once the setup was ready we proceeded to characterize each parameter that affects the engine performance. The effect of the composition of natural gas (CNG) in HC, CO and NOx compared the levels emitted by the traditional system of gasoline. Analyzing the exhaust gas, spark maps, mixture control at the following rotation speeds: idle, 2000, 3000, 4000 and 5000 rpm. We could see how some parameters are modified and / or deteriorated by the difference in fuel being consumed (power, torque, emissions, temperature, volumetric efficiency, etc). The goal of the work was to develop a tool that helps in the understanding of natural gas systems (converted or dedicated). And be able to select the best components and system that meets the product requirements for is market. This study can be used a starting point in the development of a simulation tool to calculate some important parameters such as torque, power, fuel consumption and exhaust emissions of the engines that operates with natural gas.