Thesis
Software para el cálculo de la potencia, torque, emisiones contaminantes e economía de combustible en un motor convertido a gas natural.
Autor
Magaña Flores, Artemio Ricardo
Institución
Resumen
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.