| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser ignition device capable of stably igniting a fuel particle, and to provide a laser ignition internal combustion engine capable of properly burning the fuel particle. SOLUTION: This laser ignition device 20 has a laser beam generating means 28 for emitting a laser beam by igniting the fuel particle 60 in a combustion chamber by irradiating and condensing the laser beam LB1 in the combustion chamber 50 of an internal combustion engine 2, and a condensing optical member 21 for guiding the emitted laser beam into the combustion chamber to be condensed in the combustion chamber, wherein the laser beam generating means is a low BPP laser beam generating means which emits the laser beam with a BPP value of no more than 20 mm * mrad (a radius * a half angle). COPYRIGHT: (C)2009,JPO&INPIT
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