Mazda Engineers win SAE Outstanding Technical Paper Award for HCCI Paper
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Mazda Engineers win SAE Outstanding Technical Paper Award for HCCI Paper
http://finchannel.com/news_flash/Oil...ve_JSAE_Award/
The award goes to
Takashi Youso, Powertrain Development Div., Mazda Motor Corporation
Masahisa Yamakawa, Powertrain Development Div., Mazda Motor Corporation
and also two co-authors from outside of Mazda
Shigeyuki Tanaka, Cosmo Oil Co., Ltd.
Jin Kusaka, Waseda University
I had read something else awhile ago that mentioned HCCI in connection with the Sky G. It seems like Sky G is an intermediate step to HCCI. Using some HCCI ideas while still utilizing a spark.
The technical paper analyses the effects of different fuel components on ignition performance in a high-compression gasoline HCCI engine, and develops a theoretical model that predicts auto-ignition timing for the various grades of gasoline used in different markets. The paper also shows that, when the engine is operated with a standard spark ignition, the extra heat generated as the piston approaches top-dead-center does not increase the likelihood of knocking (abnormal combustion), enabling increased power output. Mazda's breakthrough SKYACTIV-G gasoline engine, which significantly improves fuel economy and torque thanks to the world's highest compression ratio of 14.0:1, utilizes the results of this analysis.
Takashi Youso, Powertrain Development Div., Mazda Motor Corporation
Masahisa Yamakawa, Powertrain Development Div., Mazda Motor Corporation
and also two co-authors from outside of Mazda
Shigeyuki Tanaka, Cosmo Oil Co., Ltd.
Jin Kusaka, Waseda University
I had read something else awhile ago that mentioned HCCI in connection with the Sky G. It seems like Sky G is an intermediate step to HCCI. Using some HCCI ideas while still utilizing a spark.
Last edited by zoom44; May 17, 2011 at 10:50 AM.
Wow, this seems to fall into the really big deal category. Seems to me that removing NOx from the emission equation, one would then be free to run very lean mixtures which would be great from HCx and from an mpg standpoint.
Wiseguy
Joined: Aug 2008
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From: Italy
If you note Japan automotive industry seem not keen to use a massive downsizing with turbo in gasoline engines..
in that interview the Mazda engineer said that is not easy to obtain an HCCI engine from a small displacement+turbo engine....
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develops a theoretical model that predicts auto-ignition timing for the various grades of gasoline used in different markets.
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