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Combustion characteristics of a direct-injection stratified charge S.I. engine

โœ Scribed by Teruyuki Itoh; Akihiro Iiyama; Shigeo Muranaka; Yasuo Takagi

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
427 KB
Volume
19
Category
Article
ISSN
0389-4304

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โœฆ Synopsis

A direct-injection stratified charge gasoline engine has been developed that can run on an air-fuel ratio of 40-50 : 1. Major characteristics of the engine system include swirl gas flow and fuel injection in a swirl spray at a maximum fuel pressure of 10 MPa. Another notable feature is that the intake port configuration is virtually identical to that of a conventional engine, allowing flexibility for shared use of components among different engines. This new engine achieves better fuel economy, lower cold-start HC emissions and higher power output than conventional multipoint injection engines.

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โœ Tatsushi Nakashima; Masatoshi Basaki; Kimitaka Saito; Shigeo Furuno ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 851 KB

A new stratified charge system, which employs a thin fan-shaped fuel spray and a shell-shaped position cavity, has been developed for direct injection gasoline engines. In order to clarify the characteristics of stratified mixture formation and combustion, spray motion visualization, local fuel conc