Consequences of Atomization Improvement of Port Injectors by Air-Shrouding - Theory and Industrial Solution

Format:

Conference/Event

Author/Creator:

Pontoppidan, M., author.

Conference Name:

International Congress & Exposition (1993-03-01 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1993

Summary:

In order to improve the atomization capability of a standard port fuel injector, an optimized suggestion for an air shrouded injector is presented. The fluid dynamic part of the retained solution is composed of a special flat seat design for the fuel metering function combined with a post atomization adapter enabling both mono- and multi-spray modes. The concept works equally well in natural manifold gradient mode and with an external pressure pump. The realized concept is tested in both free jet experiments and on two different 2 litre engines, one operated in stoechiometric conditions the other in lean-burn conditions.The experimental work confirms a potential of the concept to increase torque stability and thereby lean-burn limits, decrease required spark advance and enable open inlet valve injection and consequently decrease wall wetting phenomena

Notes:

Vendor supplied data

Publisher Number:

930322

Access Restriction:

Restricted for use by site license