Apparatus for apportioning and atomizing fluids
AssigneeSiemens Aktiengesellschaft
InventorsRandolf Mock, Andreas Kappel, Hans Meixner
Life of this patent
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Abstract
A device is provided which allows exact apportioning and controllable atomization of fuel as necessary for various operating conditions of an internal combustion engine. The apportioning ensues with an apportioning aperture that can be closed via a valve needle. Separately therefrom, the atomization ensues with a piezoelectrically driven nozzle having an atomizer orifice placed into vibration. The shape of the atomizer aperture can be round, triangular, quadrangular or cross-like.
Claims14
An apparatus for apportioning and atomizing a fluid comprising:
- a housing;
- an apportioning aperture through which the fluid flows, the aperture being fixed to said housing;
- a closing element movably disposed in the housing operable to close or open the apportioning aperture;
- at least one atomizer orifice disposed downstream of the apportioning aperture;
- a drive element causing the atomizer orifice to vibrate relative to the apportioning aperture;
- means for biasing a carrier plate against the drive element and providing a mechanical prestress on the drive element;
- and
- an outer cap secured over the housing, the outer cap supporting the biasing means.
A fuel injector delivering repeated doses of fuel, said fuel injector comprising:
- a housing;
- an apportioning aperture through which said fuel flows, said apportioning aperture being fixed relative to said housing;
- a drive element having a first end secured to said housing and a second end;
- an atomizer plate having an atomizer orifice through which said fuel flows after flowing through said apportioning aperture, said atomizer plate being fixed to said second end of said driving element so that said drive element is operable to vibrate said atomizer orifice relative to said apportioning aperture;
- and
- an outer cap generally covering the driving element and atomizer plate, the outer cap being mounted to said housing.
Dependencies are inferred from the claim text.