Delphi is currently developing a fast solenoid injector for lean stratified applications on gasoline engines. The injector uses an outwardly-opening valve group to generate a hollow-cone spray with a stable, well-defined recirculation zone to support spray-guided stratification in the combustion chamber. This injector achieves fast opening and closing, giving an extended linear flow range and allowing multiple, closely-spaced injections in the stratified operating mode. In this paper, the performance and spray characteristics of the injector are reviewed, including close-coupled multi-pulse performance. The resulting fuel economy potential is then presented at the engine and vehicle level to show the results that are possible with when applying this fast solenoid injector.
Improving gasoline fuel economy with a fast, solenoid-based direct injector
Injection Systems for IC Engines, 2009 ; 175-182
2009
8 Seiten, 9 Bilder, 4 Quellen
Aufsatz (Konferenz)
Englisch
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