Understanding and detecting misfire in an HCCI engine fuelled with ethanol

Experimental investigation of the influence of internal and external EGR on the combustion characteristics of a controlled auto-ignition two-stroke cycle engine

“…Controlled auto-ignition (CAI) combustion, also known as homogeneous charge compression ignition (HCCI), combines two major stages in ICE cycles, including preparation of premixed air and fuel and the compression of the homogeneous charge until the commencement of auto-ignition [5][6][7]. Accordingly, there will be no longer flame front (e.g., SI engine) and diffusion burning (e.g., diesel engine) [8][9][10][11][12]. To achieve CAI/HCCI combustion, high intake charge temperatures and substantial amount of charge dilution have to be present.…”

Homogeneous Charge Compression Ignition (HCCI) Engines: A Review

“…Onishi et al [67] conducted experiments to visualize the process of combustion on a conventional SI engine in both SI and HCCI modes using schlieren photography method. From their experimental results they reported that very well defined propagation of flame was found in SI operation mode but, no visible propagation of flame was found in HCCI mode of combustion; proving volumetric combustion of HCCI engines [5,6]. Figure 1 shows the various strategies to achieve HCCI combustion.…”

“…Bahri et al [5] studied the impact of misfire on the operation of an HCCI engine fueled with ethanol. They studied the variation in output parameters like exhaust emissions, pressure inside the cylinder, rates of heat release, IMEP and aspects of combustion with misfire on a 0.3 l modified diesel HCCI engine.…”

Effects of engine misfire on regulated, unregulated emissions from a methanol-fueled vehicle and its ozone forming potential

“…A recent study conducted by Bahri et al indicated that the occurrence of engine misfire induced sharp increases in both CO and HC emissions of an ethanol-fueled homogenous charge compression ignition (HCCI) engine [17].…”