Predictive Breakdown Modelling for Spark Plug Design
The lifetime of a spark plug is often limited by the ability of a spark plug to generate spark as the plug erodes and deforms. Many parameters including the spark plug gap distance, geometric features such as corners, and the gas itself influence the breakdown event. In order to asses the viability of a spark plug design, the most ideal solution is to perform full fidelity plasma simulations for each design configuration. However, these simulations are extremely expensive and take a long time to give meaningful results. Thus, there is a need for a fast spark plug breakdown model which can predict the breakdown effectiveness for a large number of spark plug design configurations over a much shorter period of time, narrowing the range of spark plug design which can then be studied using a higher fidelity plasma simulation tool. The objective of this work is to describe a fast, predictive breakdown model to simulate the effectiveness of different spark plug configurations.