Experimental Study on Emission Characteristics of HCCI Operation with N-Heptane

Abstract:

Homogeneous Charge Compression Ignition (HCCI) is a new combustion mode with higher thermal efficiency and lower emission. With the recent development of experimental and theoretical investigations, HCCI operation for high cetane number fuels has attracted more attention. As a reference fuel, n-heptane is very easy to be ignited for high cetane number and shows obviously two-stage heat release in homogeneous charge compression ignition process due to chemical properties. HC, CO and NOx emissions of n-heptane HCCI combustion with intake temperature and excess air coefficient are studied in this paper. Intake temperature and excess air coefficient have a great impact on HCCI combustion and provide important approaches to widen HCCI operating range.

• Periodical: Advanced Materials Research (Volume 710)
• Pages: 290-293
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.710.290
• Online since: June 2013
• Authors: Ye Chun Shen, Jing Lei Zhou, Chun Hua Zhang, Jiao Wang
• Keywords: Emission, Excess Air Coefficient, HCCI, Intake Temperature

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