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Laser spark plug for internal combustion engine, has focusing unit determining beam divergence angle of aperture passing through laser radiation, where result of difference of opening and beam divergence angles is in specific range
Laser spark plug for internal combustion engine, has focusing unit determining beam divergence angle of aperture passing through laser radiation, where result of difference of opening and beam divergence angles is in specific range
The plug (10) has housing guided on a laser radiation guiding, forming and/or generating medium on an opposite side of a combustion chamber window in a combustion chamber end. A diaphragm is guided through the medium into a combustion chamber (14), and an inner contour of an aperture includes a shape of a lateral surface of a truncated cone with an opening angle. A focusing unit determines a beam divergence angle of the aperture passing through a laser radiation (24), where a result of difference of the opening angle and the beam divergence angle ranges between 0 and 30 degree.
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