| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas fuel injection device capable of simultaneously achieving both of high output and prevention of delivery of unburned gas fuel by accelerating mixing of gas fuel with compressed air in the gas fuel injection device for injecting the high pressure gas fuel into an engine combustion chamber. Ž<P>SOLUTION: The gas fuel injection device where the gas fuel is injected under the condition that an injection pressure P<SB>INJ</SB>of the gas fuel and an atmosphere pressure P<SB>AMB</SB>in the combustion chamber has the following relationship of P<SB>INJ</SB>/P<SB>AMB</SB>≥4, satisfies the relationship of L<SB>P</SB><Lm(max) wherein a distance from an opening end face of a first injection hole to an intersection point P of a center axis of the first injection hole and a center axis of a second injection hole is an intersection point distance LP with a Mach disk generation region where a Mach disk is formed in a gas jet injected from the injection hole is Lm(max). Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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