Abstract—Homogeneous Charge Compression Ignition (HCCI) is a new combustion technology that may develop as an alternative to diesel engines with high efficiency and low NOx and particulate matter emissions. HCCI engines can operate on gasoline, diesel fuel and most alternative fuels. The Homogenous Charge Compression Ignition (HCCI) is a promising new engine technology that combines elements of the diesel and gasoline engine operating cycles. Like an SI engine, the charge is well mixed which minimizes particulate emissions, and like a CIDI engine it is compression ignited and has no throttling losses, which leads to high efficiency. However, unlike either of these conventional engines, combustion occurs simultaneously throughout the cylinder volume rather than in a flame front. With the advantages there are some mechanical limitations to the operation of the HCCI engine. The main drawback of HCCI is the absence of direct combustion timing control. This paper reviews the technology involved in HCCI engine, and its merits and demerits. The challenges encountered and recent developments in HCCI engine are also discussed in this paper.

Index Terms—HCCI, Ignition timing, Valve timing, Exhaust gas recirculation, Emission

Cite: Anku Kumar Singh and M K Paswan, "Homogeneous Charge Compression Ignition (HCCI) Engine," International Journal of Mechanical Engineering and Robotics Research, Vol. 3, No. 1, pp. 204-215, January 2014.