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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimir: 2152-5102
ISSN En Línea: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v24.i1-3.120
pages 117-127

Atomization Versus Targeting for Port-Fuel Injectors - an Unresolvable Conflict?

H.-J. Nuglisch
Siemens Automotive, Induction, Fuel and Emission Components Division, 615, Bland Blvd., Newport News, Virginia, USA
S. Nally
Siemens Automotive, Induction, Fuel and Emission Components Division, 615, Bland Blvd., Newport News, Virginia, USA

SINOPSIS

Literature on atomization and sprays is focusing most often on spray atomization and on patternation separately. Automotive port-fuel injection needs to compromise between atomization and targeting, a term used in automotive applications for a well-defined spray pattern. Atomization and targeting are physically linked and affecting each other in most times negatively.
The technical background for the need of atomization and targeting in port fuel injection is outlined and the physical mechanisms involved are presented, supported by patternation, PDA and engine emission data. Technical constraints and the approach of Siemens Automotive to find an optimal compromise are presented.