| 摘要 |
PURPOSE:To have an arrangement in which the ignition energy lowers compared with the gas phase reaction method by installing a solid target in the combustion chamber and by allowing a laser beam to make incidence upon this target. CONSTITUTION:In the combustion chamber 2 of an internal combustion engine 1, a through hole 6 is excavated in its wall 5, supported and fastened by a support rod 4 from a solid target 3. This through hole 6 is blocked by a glass sheet 7 consisting of quartz glass to hold the pressure at the explosion time of mixture gas in the combustion chamber 2. Outside the chamber 2, a laser generator 8 and a light concentration device 9 are installed, and the laser beam L cast from the laser generator 8 is focused at a concentration point P in the surface of target 3 or its adjacency. The energy of laser beam L is converted into thermal energy concentratively at the point P to cause generation of a high temperature which can provide ignition for the mixture gas. |
