| 摘要 |
PCT No. PCT/AU87/00063 Sec. 371 Date Nov. 6, 1987 Sec. 102(e) Date Nov. 6, 1987 PCT Filed Mar. 6, 1987 PCT Pub. No. WO87/05364 PCT Pub. Date Sep. 11, 1987.An ignition system for internal combustion engines which minimizes or eliminates problems associated with conventional spark ignition arrangements, the ignition system comprises a laser energy generator (9) which is arranged to supply laser energy continuously at an energy level less than that needed to initiate combustion with the energy level being spiked in timed sequence and delivered to the combustion chambers (35) of the engine, the system further including optic means (39) for focussing the pulsed laser energy at predetermined points within the combustion chambers whereby the focussed laser energy is sufficient to ignite any combustible charge within the combustion chambers, the pulsed laser energy being deliverd through a purging chamber (12) to the respective combustion chambers with a purging gas being continuously supplied to the purging chamber (12) to prevent combustion gases flowing towards the laser optic means (39).
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