Experimental investigation of the influence of ignition system parameters on combustion behavior in large lean burn spark ignited gas engines

摘要

To achieve high efficiency and low pollutant emissions with large spark ignited gas engines, operation at high excess air ratios and high turbulence levels in the combustion chamber is necessary. Under these severe boundary conditions, it is a great challenge to reliably ignite the air-fuel mixture and keep cycle-to-cycle variation of the combustion process within reasonable limits. This paper investigates the influence of ignition system parameters on combustion behavior by analyzing the overall ignition and combustion process in detail: the ignition system, the electric arc, the early phase of combustion and finally the whole combustion process.