基于定容弹的缸内喷水喷雾特性试验研究
Experimental Research of Direct Water Injection Characteristics Based on Constant Volume Vessel
内燃机缸内喷水技术因其在抑制爆震、减少排放及降低油耗方面的潜力而具广泛前景。本研究基于定容弹，研究了五孔非对称布置喷射器水射流在不同条件下的喷雾特性。喷水温度范围为 30°C 至 240°C，背景压力为 0.2bar 至 10bar。结果表明，近场喷雾宽度随水温升高而增大。但在背压为 0.8bar 至 2.5bar 时，较高的过热度会导致严重的喷雾坍塌。研究发现，闪沸下的坍塌是由于喷雾中心存在低压区，而较高的过热度会使低压区迁移至喷嘴出口附近，从…查看全部>>
Direct water injection (DWI) within internal combustion engine has become a promising technology due to its potential for suppressing knock, reducing emissions and lowering fuel consumption. In this research, the spray characteristics of water jet discharged from a five-hole asymmetrical injector under different conditions were investigated based on a constant volume vessel. The water injection temperature ranged from 30°C to 240°C, and the ambient pressure …查看全部>>
白杨;王慧江;吕阳;康哲;李雁飞;
Direct water injection flash boiling spray width spray collapse spray morphology
1-11 / 11
评论