A Study of HCCI Operating Range Expansion by Applying Reaction Characteristics of Low-Carbon Alternative Fuels
Issues that must be addressed to make Homogeneous Charge Compression Ignition (HCCI) engines a practical reality include the difficulty of controlling the ignition timing and suppression of rapid combustion under high load conditions. Overcoming these issues to make HCCI engines viable for practical application is indispensable to the further advancement of internal combustion engines. Previous studies have reported that the operating region of HCCI combustion can be expanded by using DME and Methane blended fuels.(1), (2), (3), (4), (5) The reason is that the reaction characteristics of these two low-carbon fuels, which have different ignition properties, have the effect of inducing heat release in two stages during main combustion, thus avoiding excessively rapid combustion. However, further moderation of rapid combustion in high-load region is needed to expand the operation region. This study focused on supercharging and use of blended fuels. For the purpose of promoting the practical implementation of HCCI engines, experiments were conducted in the present study with the aim of expanding the HCCI operating range over a wide region of combustion loads by using the reaction characteristics of a fuel blend of DME/methane. The results revealed that the pressure rise rate was substantially reduced while maintaining the indicated mean effective pressure level. It was also observed that HCCI operation over a wide range of engine loads was possible by making use of two-stage heat release during main combustion.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
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Supplemental Notes:
- Abstract reprinted with permission of SAE International.
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Authors:
- Agui, Keito
- Suzuki, Hirotaka
- Takamura, Yuki
- Iijima, Akira
- Shoji, Hideo
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Conference:
- SAE/JSAE 2016 Small Engine Technology Conference & Exhibition
- Location: Charleston South Carolina, United States
- Date: 2016-11-15 to 2016-11-17
- Publication Date: 2016-11-8
Language
- English
Media Info
- Media Type: Web
- Features: References;
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Serial:
- SAE Technical Paper
- Publisher: Society of Automotive Engineers (SAE)
- ISSN: 0148-7191
- EISSN: 2688-3627
- Serial URL: http://papers.sae.org/
Subject/Index Terms
- TRT Terms: Combustion; Compression ignition engines; Engine knock; Ethers; Fuel mixtures; Ignition systems; Methane
- Uncontrolled Terms: Homogeneous-charge compression-ignition
- Subject Areas: Highways; Vehicles and Equipment;
Filing Info
- Accession Number: 01624060
- Record Type: Publication
- Source Agency: SAE International
- Report/Paper Numbers: 2016-32-0011
- Files: TRIS, SAE
- Created Date: Jan 25 2017 3:30PM