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US 8,783,221 B2Granted
Laser-induced spark ignition for an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsPascal Woerner, Manfred Vogel, Juergen Raimann
Life of this patent
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Abstract
A laser ignition device is provided for an internal combustion engine, having an ignition laser in which a combustion chamber window has an orifice plate arranged in front of it.
Claims10
A laser ignition device for an internal combustion engine, comprising:
- an ignition laser having a laser-active solid, a combustion chamber window having a surface, and a housing, the combustion window being situated at an end of the housing and connected in a sealing manner;
- wherein an orifice plate is situated at an outer end of the housing at which the combustion chamber window is situated inside the housing, creating a dead space between the orifice plate and the combustion chamber window;
- wherein the orifice plate has a conical opening, the diameter of the conical opening of the orifice plate increasing in a direction of the combustion chamber window, and a cone angle of the orifice plate corresponds to an exit angle of the laser pulse.
Dependencies are inferred from the claim text.