Experimental Study on Combustion and Emissions of Duel Fuel Sequential Combustion with n-Heptane/Gasoline-Like Fuels 2014-01-2682
An experimental study was conducted on the combustion and emissions characteristics of duel fuel sequential combustion (DFSC) mode on a single-cylinder engine, applying port injection of n-heptane combined with in-cylinder direct injection of commercial gasoline, ethanol and n-butyl alcohol, respectively. Three-stage combustion, which consists of low- and high-temperature combustion of premixed n-heptane and high temperature combustion of directly injected gasoline-like fuels were observed. The effects of the premixed ratio and overall heating values per cycle on the combustion characteristics and emissions were investigated. The experimental results show that: with the increasing of premixed ratio and overall heating values per-cycle, the ignition timing of the directly injected fuels advances and the maximum pressure and maximum mass-averaged temperature increase. Furthermore, the CO emissions increase to a peak point and then decrease with the increase of premixed ratio and overall heating values. While, it is very interesting to find that soot emissions achieve to an ultra-low level for DFSC with n-heptane/oxygenated fuels, particular with n-heptane/ethanol.
Citation: Qian, Y., Zhu, L., Huang, Z., and Lu, X., "Experimental Study on Combustion and Emissions of Duel Fuel Sequential Combustion with n-Heptane/Gasoline-Like Fuels," SAE Technical Paper 2014-01-2682, 2014, https://doi.org/10.4271/2014-01-2682. Download Citation
Author(s):
Yong Qian, Lifeng Zhu, Zhen Huang, Xing-cai Lu
Affiliated:
Shanghai Jiao Tong Univ.
Pages: 10
Event:
SAE 2014 International Powertrain, Fuels & Lubricants Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Ignition timing
Carbon monoxide
Combustion and combustion processes
Gasoline
Ethanol
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