Performance and Emission Parameters of Homogeneous Charge Compression Ignition (HCCI) Engine: A Review

Abstract

Strict emission regulations and demand for better fuel economy are driving forces for finding advanced engines that will be able to replace the conventional internal combustion engines in the near future. Homogeneous charge compression ignition (HCCI) engines use a different combustion technique; there are no spark plugs or injectors to assist the combustion. Instead, when the mixtures reach chemical activation energy, combustion auto-ignites in multiple spots. The main objective of this review paper is to study the engine performance and emission characteristics of HCCI engines operating in various conditions. Additionally, the impact of different fuels and additives on HCCI engine performance is also evaluated. The study also introduces a potential guideline to improve engine performance and emission characteristics. Compared to conventional compression ignition and spark ignition combustion methods, the HCCI combustion mode is noticeably faster and also provides better thermal efficiency. Although a wide range of fuels including alternative and renewable fuels can be used in the HCCI mode, there are some limitation/challenges, such as combustion limited operating range, phase control, high level of noise, cold start, preparation of homogeneous charge, etc. In conclusion, the HCCI combustion mode can be achieved in existing spark ignition (SI) engines with minor adjustments, and it results in lower oxides of nitrogen (NOx) and soot emissions, with practically a similar performance as that of SI combustion. Further improvements are required to permit extensive use of the HCCI mode in future.

Potential of Rice Industry Biomass as a Renewable Energy Source

“…The usage of fossil fuels has increased rapidly since the 19 th century due to the increased population and technological development in many countries; neither the population nor the technological development are able to be controlled, and the development of technology is important for sustaining society and the economy [1]. Many scientists are worried that due to their limited reserves, fossil fuels will become incapable of supporting global energy needs in the coming years [2][3][4]. The increasing price of fossil fuels is due to the high market demand, excessive use, and phasing out of fossil fuel based technologies which have caused climate change over a period of years [5][6][7][8].…”

The experimental verification of the multi-fuel IC engine concept with the use of jet propellant-8 (JP-8) and its blends with pure rapeseed oil

“…Several publications report the usage of early direct injection to achieve the process for diesel oil. Mixture preparation and control strategies in diesel engines are described in [25][26][27]. Two generations of "Modulated Kinetics" process elaborated by Nissan Motor Company [28], Toyota uniform bulky combustion system (UNI-BUS) [29] and AVL homogeneous charge late injection (HCLI) [30] are the best-known examples of what is called "Premixed Compression Ignition Engine (PCIE)" [31].…”

Study of the Combustion Process of a Homogeneous Charge Compression Ignition (HCCI) Engine and a Partially Premixed Combustion (PPC) Mode of a Compression Ignition Engine Using Natural Gas as an Alternative Fuel

“…Undoubtedly, auto-ignition of the air-fuel mixture is necessary for the occurrence of ignition and fuel selection is a very important factor that significantly affects on the combustion process and thus on the engine performance. For this reason, the auto-ignition of HCCI may be controlled by changing the fuel properties [11]. Furthermore, the addition of an ignition inhibitor in the fuel can make it more chemically reactive.…”