Francklin Rivas P., Anna Pérez M., Mary Vergara P., Francklin Rivas E., Cristian García G., Néstor Rivera C., Angel Paucar U.
In this paper, an analysis of the pollution limits generated due to faults in a spark ignition engine associated to the low ignition voltage and to the change in the air/fuel ratio, using control charts is presented. The data collected corresponds to the emission of gases generated in the vehicle in normal operation and fault conditions, from which the control charts are developed for the mean and range of: Carbon Monoxide (CO), Unburned hydrocarbons (UHC) and Carbon Dioxide (CO2). From the limits defined in normal operating conditions of the engine, the sensitivity of these charts for the detection of out-of-control values, obtained from the induction of the aforementioned faults, is tested. The obtained results show that, under normal operating conditions, the upper control limits obtained do not differ significantly from the maximum admissible values established in international environmental regulations, and that the highest values registered of polluting emissions together with the sudden changes on the developed control charts are found for the rich dosage and therefore all failures that generate this type of mixture must be considered as critical due to the impact it generates in the ecosystem.
Control charts, Pollutant gases, faults analysis, spark ignition engine
Cite this paper
Francklin Rivas P., Anna Pérez M., Mary Vergara P., Francklin Rivas E., Cristian García G., Néstor Rivera C., Angel Paucar U.. (2019) Control Charts for Defining the Pollutant Gas Limits in a Spark Ignition Combustion Engine with Faults. International Journal of Environmental Science, 4, 127-131