Author : Shamla A. Mulane and S. D. Limaye

The paper discusses about homogeneous charge compression ignition (HCCI) engine technology. Due to increasing emissions of greenhouse gases from automobile engines it is required to develop clean technology in automobiles with lower fuel consumption and higher efficiency for ambient air quality improvement, greenhouse gases reduction and energy security. The factors to be considered while designing this kind of technology are, high compression ratio, lean homogeneous air fuel mixture, complete and instantaneous combustion, which lead to homogeneous charge compression ignition (HCCI).HCCI combines the characteristics of Spark-Ignition (SI) and Compression Ignition (CI).HCCI engines can operate on gasoline, diesel fuel, and most alternative fuels. This paper reviews the technology involved in HCCI engine development, its advantages and disadvantages. The challenges involved in HCCI and the future developments in the same are also discussed in the paper.

Keywords: HCCI, SI, CI, NOx, PM, CO, HC.