Laser spark plug
AssigneeGe Jenbacher GmbH & Co Og
InventorFriedrich Gruber
Life of this patent
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Abstract
A laser spark plug for an internal combustion engine, in particular for a gas engine, includes a laser crystal integrated into the laser spark plug and a combustion chamber optical unit. Laser light pulses issuing from the laser crystal can be coupled by way of the combustion chamber optical unit into a combustion chamber of the internal combustion engine. An optical laser light sensor is integrated into the laser spark plug, and the combustion chamber optical unit is provided with a preferably curved reflection surface which faces towards the laser light sensor and has a reflective mirroring. At least a part of a laser light reflected at the reflection surface during the duration of a laser light pulse can be detected by the laser light sensor.
Claims20
A laser spark plug for an internal combustion engine, comprising:
- an integrated laser crystal for emitting laser light pulses towards a combustion chamber of the internal combustion engine;
- a combustion chamber optical unit configured to couple the laser light pulses emitted from said laser crystal into the combustion chamber of the internal combustion engine;
- and
- an integrated optical laser light sensor;
- wherein said combustion chamber optical unit has a reflection surface facing towards said laser light sensor and said laser crystal, said reflection surface having a reflective mirroring such that at least a part of a laser light of the laser light pulses emitted by said laser crystal is reflected at said reflection surface towards said optical laser light sensor to be detected by said laser light sensor.
Dependencies are inferred from the claim text.