Direct injection of fuels in internal combustion engines

A fuel injector and a spark-ignited internal combustion engine, the conveying injector formed with an device (10) one part of composite oil spraying and ignition device for engine. The oil injector comprising the annular oil groove (28), which is used for smuggle the gas fuel transmission to engine combustion chamber; the oil groove (28) is provided with a conveying port (30), the fuel using the atomizing of fuel bubble and steam through the conveying port is transmitted to the combustion chamber, a rectangular hole (30) is defined (31) and (31) is orderly and protective delivering mouth valve core and valve seat and valve seat transportably (23). The transferring device is herringbone-shaped force the fuel oil path, thereby allowing the fuel oil and gas particles and steam which is abuts transferring channel opening end sparking more gap (49), and then one of a large affect fuel particles to flow to a sparking more gap (49). The infinite path of the fuel oil control device with or the vertical inlet therein, which can control. The oil pressure control device is flat, which is oppositely (41) comprises a control oil, the oppositely is arranged in the valve body (23); And extending is longer than the conveying port and a cylinder (30). The device (10) is arranged on the composite fuel injector and ignition device is flat, the device (10) is provided with a beam electrode (48), the beam is a secondary electrode (47) cooperation is defined a sparking more gap (49). The oil control protrusion (41) by using is a column are electrode (48). Is described and demand and composite fuel injection and ignition device (10).