Extending Lean Operating Limit and Reducing Emissions of Methane Spark-Ignited Engines Using a Microwave-Assisted Spark Plug

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</svg>, adding microwave energy to the spark discharge per cycle decreases occurrence of misfire and partial-burn cycles, thus increasing the total number of complete combustion cycles.</table>

Journal of Combustion

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Figure 3

Figure 3: Extending Lean Operating Limit and Reducing Emissions of Methane Spark-Ignited Engines Using a Microwave-Assisted Spark Plug 