Fuel Stratification Using Twin-Tumble Intake Flows to Extend Lean Limit in Super-Lean Gasoline Combustion Chiba University

Format:

Conference/Event

Author/Creator:

Moriyoshi, Moriyoshi, author.

Contributor:

Kaneko, Makoto

Kuboyama, Tatsuya

Sato, Hironao

Yamada, Toshio

Conference Name:

International Powertrains, Fuels & Lubricants Meeting (2018-09-17 : Heidelberg, Germany)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2018

Summary:

To drastically improve thermal efficiency of a gasoline spark-ignited engine, super-lean burn is a promising solution. Although, studies of lean burn have been made by so many researchers, the realization is blocked by a cycle-to-cycle combustion variation. In this study, based on the causes of cycle-to-cycle variation clarified by the authors' previous study, a unique method to reduce the cycle-to-cycle variation is proposed and evaluated. That is, a bulk quench at early expansion stroke could be reduced by making slight fuel stratification inside the cylinder using the twin-tumble of intake flows. As a result, the lean limit was extended with keeping low NOx and moderate THC emissions, leading to higher thermal efficiency

Notes:

Vendor supplied data

Publisher Number:

2018-01-1664

Access Restriction:

Restricted for use by site license