Effect of dual-core spark discharge on ignition probability and engine power

This report presents the experimental study of developing a dual-core spark discharge (2C-SD) model for clean combustion. We first studied ignition probability (Pig) lean methane/air at an equivalence ratio 0.5 using 2C-SD with different spark-gaps (dgap = 1.0mm and 2.0mm) in constant volume combustion chamber. then applied to engine driving 2.5-kW generator. The results indicated that Pig is 30% 45% dgap=1.0mm 2.0mm, respectively, while 0 when conventional single (CSSD). Compared CSSD, power could be improved by 4%-9.7%, depending on throttle openings. expect larger initial flame kernel enhance quickly reach critical radius before self-sustained propagating. faster speed essential achieving optimal phasing, resulting higher power.