| 摘要 |
PROBLEM TO BE SOLVED: To improve the heat efficiency by forcibly blocking a slider valve provided to the air passage formed to a control valve, at the compression top dead center, so as to prevent the overheating of the control valve, and preventing the staying of remaining gas in an auxiliary chamber, in an auxiliary chamber type gas engine. SOLUTION: To a control valve 5 provided in an auxiliary chamber 2, an air passage 7 opened to a main chamber 1 side, and an air nozzle 16 opened to the upper part of the auxiliary chamber 2, are formed. A slider valve 8 provided to the air passage 7 opens the air nozzle 16 by an air pressure higher than a specific value in the main chamber 1. The slider valve 8 opens the air nozzle 16 at the latter half of the compression stroke in order to feed a compressive air to the auxiliary chamber 2, blocks the air nozzle 16 by a cum mechanism 35 near the compression top dead center, and prevents the reverse flow of the combustion gas to the air passage 7. The compressive are is struck to and reflected from a conical surface, and filled to the auxiliary chamber from the upper part, and the gas fuel is squeezed to the lower part of the auxiliary chamber, and ignited and burned.
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