Tool for qualitative performance comparison of internal combustion engines components using optimized engine calibration and condition monitoring

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Modern Internal Combustion Engines (ICEs) rely on complex control systems and engine maps in order to achieve higher fuel efficiencies while meeting stringent regulatory emissions standards. Given the economies of scale of the automotive sector, manufacturers strive to improve their engine technologies and even very small improvements in performance are considered. To adopt a new technology, techniques that can discern a measurable difference in the engine's performance are required to quantify the potential benefits of new components. NanoSpark, a Canadian start-up company, has developed an innovative spark ignition system for use in ICEs, believed to have a performance benefit. McMaster has in turn developed a method that can provide a qualitative and a quantitative comparison of components for ICEs. Our proposed technique uses conventional engine mapping in conjunction with multi-objective optimization in order to generate Pareto fronts that can be used for trade-off analysis. The comparison of Pareto fronts for existing and new components will enable us to quantify potential benefits or short-comings of new technologies across different operating ranges. This method will be used for quantifying the potential benefits of the NanoSpark spark plug and for analyzing its performance. The standard engine calibration tests will be used to provide a validation of the performance improvements indicated by the Pareto analysis. It is also necessary to verify the performance of the spark plug over time and to determine the impact of the new technology on other engine components. Traditionally this is evaluated by long duration testing under high engine stress. The McMaster research team has developed a number of signal-based condition monitoring strategies that could be used to reduce the amount of testing required for wear and impact analysis. Related to this analysis, it should be noted that many gasoline engines are now being equipped with direct injection fuel system, with a negative effect on the working life of the spark plug. As the NanoSpark technologies is expected to overcome this limitation, it is an ideal candidate for evaluating our signal-based condition monitoring methodology for this new application. **********