Published in: International Journal of Engineering Research & Technology
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Volume/Issue: Vol.2 - Issue 2 (February - 2013)
In the context of environmental restrictions and sustainable development, pollution standards have become more and more stringent. The design of most fuel efficient and environmental friendly internal combustion engine so as to meet the future emission standards is currently one of the main goals of engine researchers. Homogeneous Charge Compression Ignition (HCCI) combustion has the potential to be highly efficient and to produce low emissions. HCCI engines can have efficiencies as high as compression-ignition direct-injection (CIDI) engines (an advanced version of the commonly known diesel engine), while producing ultra-low oxides of nitrogen (NOx) and particulate matter (PM) emissions. HCCI engines can operate on gasoline, diesel fuel, and most alternative fuels. HCCI represents the next major step beyond high efficiency CIDI and spark-ignition, direct-injection (SIDI) engines for use in transportation vehicles. In some regards, HCCI engines incorporate the best features of both spark ignition (SI) gasoline engines and CIDI engines. 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. 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.
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