Diesel injector based on nozzle inner vortex cavitation induced hollow spraying structure

• Main Authors: WANG JIANQUAN, WU ZHAOHUI, GUO GENMIAO, WANG QIAN, HE ZHIXIA, GUAN WEI, WEN LIMING
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2021
• Subjects: BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

The invention discloses a diesel injector based on a nozzle inner vortex cavitation induced hollow spraying structure. The diesel injector comprises a needle valve, a needle valve body, spraying holesand a pressure chamber; the axis of the needle valve of the injector coincides with the axis of the needle valve body; the multiple identical reduced conical spraying holes are evenly distributed inthe head of the needle valve body; and the outlet ends of all the spraying holes communicate with the pressure chamber. The pressure chamber of the injector is composed of the hemisphere and the cylinder which are equal in diameter, the geometrical structure of the injector is optimized, the vortex cavitation phenomenon in the diesel injector under different loads is strengthened, and the fuel atomization quality of the injector is effectively improved. 本发明公开了一种基于喷嘴内涡线空化诱导中空喷雾结构的柴油机喷油器，包括针阀、针阀体、喷孔和压力室；喷油器的针阀的轴线与针阀体的轴线重合，所述针阀体的头部均布有多个相同的渐缩圆锥形的喷孔，所有喷孔的出口端均与压力室连通；喷油器的压力室由等直径的半球和圆柱组成，通过对喷油器几何结构进行优化，实现对不同负荷下柴油机喷油器内涡线空化现象进行强