| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an airtightness inspection method configured to inspect airtightness of seal more properly, especially on a low-pressure side in a gaseous fuel internal combustion engine. <P>SOLUTION: The airtightness inspection method of a gaseous fuel internal combustion engine 1 including an injector 4 that discharges gas in a piping, includes a reduction step of discharging the gas in the piping 2 using the injector 4 to reduce the pressure in the piping 2 to a predetermined pressure Pp. <P>COPYRIGHT: (C)2013,JPO&INPIT |
