Ignition Improvement for Ultra-Lean Dilute Gasoline Combustion University of Windsor

Format:

Book

Conference/Event

Author/Creator:

Yu, Shui, author.

Contributor:

Han, Xiaoye

Tjong, Jimi

Wang, Meiping

Yang, Zhenyi

Yu, Xiao

Zheng, Ming

Conference Name:

International Powertrains, Fuels & Lubricants Meeting (2017-10-16 : Beijing, China)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2017

Summary:

In this work, a spatially distributed spark ignition strategy was employed to improve the ignition process of well-mixed ultra-lean dilute gasoline combustion in a high compression ratio (13.1:1) single cylinder engine at partial loads. The ignition energy was distributed in the perimeter of a 3-pole igniter. It was identified that on the basis of similar total spark energy, the 3-pole ignition mode can significantly shorten the early flame kernel development period and reduce the cyclic variation of combustion phasing, for the spark timing sweep tests at λ 1.5. The effect of ignition energy level on lean-burn operation was investigated at λ 1.6. Within a relatively low ignition energy range, id est below 46 mJ per pole, the increase in ignition energy via ether 1 pole or 3 pole can improve the controllability over combustion phasing and reduce the variability of lean burn combustion. Higher ignition energy was required in order to enable ultra-lean engine operation with λ above 1.6. With the highest ignition energy achievable for the tested ignition system, the stable operable lean limits at a nominal engine load of 3 bar indicated mean effective pressure (IMEP) was extended by using 3-pole ignition, which consequently increased the thermal efficiency

Notes:

Vendor supplied data

Publisher Number:

2017-01-2244

Access Restriction:

Restricted for use by site license