爆震 Traditional form: 爆震 Pinyin (reading): bàozhèn Definitions: knocking (fault in internal combustion engine) Characters: 爆 - crackle, pop; burst, explode 震 - shake, quake, tremor; to excite Traditional characters: 爆 - crackle, pop; burst, explode 震 - shake, quake, tremor; to excite