Laser spark plug and method for operating same

摘要

A laser spark plug is described, in particular for an internal combustion engine of a motor vehicle, having a combustion chamber window situated in an end area facing the combustion chamber. Arrangement is provided for cooling a volume region present in the area of the combustion chamber window and/or a medium present in the volume region. The cooling arrangement has a cooling body which has material having a relatively great thermal conductivity, in particular having a thermal conductivity of approximately 90 Watts per Kelvin and meter at room temperature or more. The cooling body is designed essentially annularly. An inner diameter of the cooling body in the area of a front side facing the combustion chamber of the cooling body is smaller than an inner diameter of the cooling body in the area of a front side of the cooling body facing away from the combustion chamber.

主权项

1. A laser spark plug for an internal combustion engine of a motor vehicle, comprising:
a combustion chamber window situated in an end area facing a combustion chamber; and an arrangement for cooling at least one of a volume region present in an area of the combustion chamber window and a medium present in the volume region, wherein the arrangement for cooling is adapted to cool the one of the volume region and the medium to a temperature of between 300° C. and 350° C.