METHOD FOR SAFELY DETECTING HIGH PRESSURE SEALING PROPERTY OF FUEL GAS SYSTEM AFTER IMPACT TEST OF COMPRESSED NATURAL GAS VEHICLE

摘要

A method for safely detecting high pressure sealing property of a fuel gas system after an impact test of a compressed natural gas vehicle comprises the following steps: mounting a high pressure sensor on a gas inlet pipe of a decompressor; judging whether the fuel gas system of the vehicle leaks or not, based on the voltage drop value of the high pressure sensor within a preset time. The characteristic curve formula of the high pressure sensor is V₀=(A+B/P_max*Pressure*T)/(100*V_dd).