Measurement of Air-Fuel Mixture Distribution in a Gasoline Engine Using LIEF Technique Toyota Motor Company

Format:

Conference/Event

Author/Creator:

Shimizu, Rio, author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1992-10-19 : San Francisco, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1992

Summary:

The laser-induced exciplex fluorescence (LIEF) technique, currently used to observe mixture formation in a diesel engine, has been applied to a spark ignition (SI) engine and a new equivalence ratio calibration technique has been developed in order that two-dimensional measurements of the equivalence ratio may be made in an operating engine.Spectrally separated fluorescent images of liquid and vapor phase fuel distributions were obtained by adding new exciplex-forming dopants to the gasoline fuel. Dual light sheets from an excimer laser were introduced into one of the cylinders of a 4-valve lean-burn engine, and 2-D images of the mixture formation were recorded at pre-set crank angles during the induction and compression strokes by an image-intensified camera equipped with the appropriate filter.The relationship between fluorescence intensity and equivalence ratio was investigated for purposes of calibration so that vapor phase spatial concentration maps of the equivalence ratio could be obtained for a quantitative analysis of mixture formation

Notes:

Vendor supplied data

Publisher Number:

922356

Access Restriction:

Restricted for use by site license