Engine Performances of Lean Iso-Octane Mixtures in a Glow Plug Heated Sub-Chamber SI Engine

Due to the difficulty directly study ammonia, present work investigated engine performance of lean iso-octane/air mixture approximate ammonia combustion behaviour. The was conducted using a single cylinder modified diesel that features spark plug and glow in sub-chamber. investigations varied speeds (1000 1500 RPM), voltages (6 10 volts), excess air ratios (1.4 1.8), ignition timings (-2 -5 °BTDC). results suggested improved performances with lower ratio higher voltage due more complete stable combustion. By increasing speed, burn limit extended performances. Because sub-chamber feature, delaying timing A larger found increase sensitivity timing. brake mean effective pressure for all conditions has coefficient variation less than 7%, indicating current setup can be used investigate blended fuel direct future works.