Experimental study on compound HCCI (homogenous charge compression ignition) combustion fueled with gasoline and diesel blends

Because the energy crisis and environmental pollution are significant concern, a next-generation combustion mode for internal combustion engines that can simultaneously reduce exhaust emissions and substantially improve thermal efficiency has attracted increasing attention. In the last two decades, diesel-fueled HCCI (homogenous charge compression ignition) combustion has been widely researched. It has been determined that diesel HCCI combustion has the potential to improve NOx and soot emissions at low-to-medium loads; however, it suffers from higher HC (hydrocarbon)/CO (carbon monoxide) emissions, narrow operating ranges, and uncontrollable ignition timing and combustion rates due to low volatility and high ignitability. The NOx and soot emissions of optimized G30 compound HCCI combustion with intake air boost are far lower than those of the DlCl diesel engine. Specifically, the NOx emissions can be maintained within 100 ppm, and the soot emissions are below 10% at the full load ranges. This paper talks about experimental study on compound HCCI (homogenous charge compression ignition) combustion fueled with gasoline and diesel blends.