Injection nozzle
AssigneeMTU Motoren-und Turbinen-Union
InventorsRalph-Michael Schmidt, Christoph Teetz, Martin Rauscher
Life of this patent
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Abstract
An injection nozzle for diesel engines is disclosed with a direct fuel injection into combustion air in the combustion space having a swirl. The nozzle is constructed as a hole-type nozzle with several injection openings arranged at uniform distances and distributed along the nozzle circumference. In order to further develop such an injection nozzle in a manner which permits shorter injection durations and an improved utilization of the air, an additional injection opening with a smaller diameter is constructed in each case between two adjacent larger injection openings, whereby the overall cross-sectional surface of all injection openings becomes larger without any drifting into one another of the thus formed fuel sprays.
Claims13
Injection nozzle for diesel engines with a directional injection into combustion air in a combustion space displaced with a swirl, which injection nozzle is constructed as a hole-type nozzle with several groups of injection openings arranged at uniform distances and distributed along a circumferential arc of the nozzle, wherein between respective first size injection openings, another second smaller size injection opening is constructed, the mouths of all injection openings being situated on the common circumferential arc, said first and second size injection openings defining respective separate fuel injection flows into the combustion space.
Injection nozzle for diesel engines of the type providing directional injection of fuel into swirling combustion air in a combustion space,
- said injection nozzle being a hole-type nozzle comprising:
- a plurality of first size injection openings distributed uniformly around a circumference of the nozzle,
- and a plurality of second size injection openings distributed uniformly around the circumference of the nozzle,
- said first and second size injection openings defining respective separate fuel injection flows into the combustion space,
- wherein said second size injection openings are smaller than said first size injection openings and are located respectively between pairs of the first size injection openings.
Dependencies are inferred from the claim text.