This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Study on Robust Fuel Performance with Differing Fuel Types in a 2-Stroke CAI Combustion Engine
Technical Paper
2019-32-0573
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
This study sought to achieve robust combustion with the differing fuel types and levels of fuel quality that are present in various areas of the world. The tests used the 2-stroke controlled auto ignition (CAI) engine from our earlier report [1], which was proven to have potential as an efficient, clean engine for diesel fuel. This study verified whether efficient, clean CAI combustion of gasoline fuel could be achieved with the same basic structure and engine system.
Diesel and gasoline have very different volatility, viscosity and ignition characteristics, all of which significantly affect combustion in an engine. It is particularly necessary in CAI combustion to adjust the ignition timing according to the fuel used, as the difference in auto-ignition temperature from gasoline and diesel affects the CAI ignition timing. This issue was addressed by conducting experiments with a test engine to determine how the ignition timing is affected by the equivalent ratio, compression ratio and in-cylinder flow, and the ideal solution was verified.
The results indicated that the ignition timing for CAI combustion can be effectively adjusted by changing the shape of the scavenging port to alter the in-cylinder flow. Computational fluid dynamics (CFD) analysis confirmed that the change in the scavenging port shape increased the in-cylinder flow velocity and the turbulence kinetic energy at the compression end. This indicates that the in-cylinder flow during the compression stroke affects the ignition timing for CAI combustion.
The results produced by this study also indicated that equivalent thermal efficiency and emission levels can be achieved for both diesel and gasoline by setting an appropriate equivalent ratio, compression ratio, in-cylinder flow and exhaust valve lift profile for each type of fuel.
In conclusion, this study confirmed that 2-stroke CAI is a combustion process with extremely robust fuel performance and the potential to be suitable for various fuel types with significantly different properties.
Recommended Content
Authors
Topic
Citation
Kurata, M., Okubo, M., Yamada, Y., and Kitano, S., "Study on Robust Fuel Performance with Differing Fuel Types in a 2-Stroke CAI Combustion Engine," SAE Technical Paper 2019-32-0573, 2020.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 |
Also In
References
- Kurata , M. and Yamada , Y. Diesel CAI Combustion in Uniflow Scavenging 2-Stroke Engine Provided with Port Fuel Injection Device SAE Technical Paper 2018-32-0015 2018 10.4271/2018-32-0015
- Jidoshayo Energy 2007 http://www.iae.or.jp/wp/wp-content/uploads/2014/09/2006-2.pdf
- Bio Nenryo O Chushin To Shita Wagakuni no Onshitsu Koka Gas Sakugen Ni Muketa Nenryo Seisaku Ni Kan Suru Chosa Hokokusho https://www.meti.go.jp/meti_lib/report/2016fy/000670.pdf
- Mori , K. doi:/10.24795/24201k096 http://usprepo.office.usp.ac.jp/dspace/bitstream/11355/306/1/24201k096_zenbun.pdf
- Bio Nenryo Ni Kan Suru Shogaikoku No Doko To Jizokukanosei Kijun No Seido Unyo Nado Ni Kan Suru Chosa Hokokusho ) http://www.meti.go.jp/meti_lib/report/2015fy/000795.pdf
- Yamane , K. Jidoshayo Bio Nenryo To Wa https://www.jsae.or.jp/~dat1/mr/motor24/mr20062403.pdf
- Energy/Kankyo Bunseki Ni Shi Suru Gijutsu Joho No Seibi No Tame No Kenkyu 2013 http://www.esri.go.jp/jp/prj/hou/hou031/hou31-2-5.pdf http://www.esri.go.jp/jp/prj/hou/hou031/hou031.html
- Kodama , T. , Nakayama , T. , Kusaka , J. Numerical Studies on the Effect of Physical and Chemical Fuel Properties on Diesel Combustion and Exhaust Emission Characteristics Transactions of the Society of Automotive Engineers of Japan, Inc. 44 2 327 333 2013
- Kaneko , T. Basic Things to Know About Automotive Gasoline JSAE Engine Review 8 1 3 14 2018
- Gendoki Gijutsu Iinkaiho http://jcmanet.or.jp/jcmanet/wp-content/uploads/2013/09/ce26ced3a0f53df8190c0e791b7d4ea6.pdf
- Japan Petroleum Energy Center (JPEC) Jidosha Nenryo No Tayoka To Kokoritsu Riyo Ni Kan Suru Kenkyu Kaihatsu ~Engine Seigyo Parameter Henko Ni Yoru Nenryo Tekigosei No Kakudai Kento ~ Research and Development on Diversification and Highly Efficient Usage of Automotive Fuels ) 2012 http://www.pecj.or.jp/japanese/report/2012report/h24data/2.1-1.pdf
- Ogata , K. Investigation of Robustness Control for Practical Use of Gasoline HCCI Engine Transactions of the Society of Automotive Engineers of Japan, Inc. 44 2 257 262 2013
- Shibata , G. Nenryo No Chakkasei To Yokongo Asshuku Jichakka Nenryo ) l47 6 64 69 2012 10.5988/jime.47.841 https://www.jstage.jst.go.jp/article/jime/47/6/47_841/pdf/-char/ja