Analysis for Influence of Inhomogeneity of Air-Fuel Mixture to Super-Knock Caused by Pre-ignition in Supercharged Direct-Injected SI Engine Based on Numerical Calculation Keio University

Format:

Conference/Event

Author/Creator:

Negoro, Negoro, author.

Contributor:

Iida, Norimasa

Matsuura, Katsuya

Nishi, Mina

Sato, Yoshihisa

Seki, Yuichi

Conference Name:

JSAE/SAE 2015 International Powertrains, Fuels & Lubricants Meeting (2015-09-01 : Kyoto, Japan)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

Nowadays, highly super charging is required corresponded to downsizing concept for improving thermal efficiency in direct-injected spark ignition (DISI) engine. However, highly super charging increases the possibility of super-knock caused by pre-ignition. Recently, in many studies, the reason of pre-ignition has been investigated but the reason why pre-ignition leads such strong knocking called super-knock has not been investigated. In DISI engine, it is estimated that there is more inhomogeneity of equivalence ratio and temperature of air-fuel mixture than it in port injection SI engine. In this study, factors which decide self-ignition timing was reviewed and the influence of inhomogeneity of air-fuel mixture to super-knock was investigated based on numerical calculation

Notes:

Vendor supplied data

Publisher Number:

2015-01-1866

Access Restriction:

Restricted for use by site license