On the possibility to improve petrol engine operation by laser ignition

Abstract

Abstract A typical method frequently used for the experimental investigation of engines operation at light load, low speed and different air-fuel ratios by spark timing adjustment was applied to understand in what measure the characteristics of the ignition system could improve the petrol engines performances. In this sense, a Laser Ignition - LI system replacing the original spark ignition system of the engine was mounted and some comparisons between these systems have been made based on engine power, coefficients of variation and combustion duration when 500 consecutive cycles were registered for 2000 rpm engine speed with load equivalent to 2 bar brake mean effective pressure and up to 1.25 relative air-fuel ratios.