进油阀 meaning in Chinese

filling valve
fuel charging valve
inlet valve

Test method for dynamometer evaluation of unleaded spark - ignition engine fuel for intake value deposit formation
进油阀沉积物形成用无铅火花点火发动机燃料的功率计评价用试验方法
Standard test method for dynamometer evaluation of unleaded spark - ignition engine fuel for intake valve deposit formation
进油阀沉积物形成用火花点燃式发动机无铅燃料的功率计评定标准试验方法