Browse > Article

Spray Behavior and Atomization Characteristics of Dual Stream Gasoline Injectors  

Song, Bhum-Keun (Graduate School of Precusion Mechanical Engineering, Chonbuk University)
Kim, Won-Tae (Jeonju Machinery Research Center)
Kang, Shin-Jae (Division of Mechanical & Aerospace System Engineering, Chombuk University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.13, no.5, 2005 , pp. 112-120 More about this Journal
Abstract
The injector, which is used in a 4-valve gasoline engine, is required to be maintained the dual stream because of the design of dual intake port. In addition, the spray characteristics of fuel injector have strong influence on engine performance, exhaust emission, fuel consumption, and especially the cold start condition for the port injection. So, commercial gasoline injectors off different type were inspected. Those are 2 hole,4 hole, air shroud 4 hole, and air shroud 4 hole injector with separator. The spray behavior of dual stream was researched by the visualization system and PDPA system was employed to measure the droplet size. Atomization is one of the most important characteristic, so droplet size distributions and SMD are investigated. And the spray characteristics of each injector are also analyzed such as the spray tip penetration, spray angle, and separation angle.
Keywords
Dual stream; Air shroud; Separator; PDPA; Atomization;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. Yang, E. W. Kaiser, W. O. Siegl and B. W. Anderson, 'Effect of Port Injection Timing and Fuel Drop Size on Total and Speciated Exhaust Hydrocarbon Emissions,' SAE 930711, 1993
2 H. Iwano, M. Jaitoh, K. Sawamoto and H. Nagaishi, 'An Analysis of Induction Port Fuel Behavior,' SAE 912348, 1991
3 B. J. Rho, S. J. Kang and W. T. Kim, 'Spray Behavior and Atomization Characteristics of Air-Assist Type Gasoline Fuel Injector,' Transactions of KSAE, Vol.6, No.3, pp.187-197, 1998
4 R. J. Boyce, D. J. Boam and I. C. Finlay, 'Cold Start Performance of an Automative Engine Using Prevaporized Gasoline,' SAE 930710, 1993
5 T. Sugimoto, K. Takeda and H. Yoshizaki, 'Toyota Air-Mix Type Two-Hole Injector for 4-valve Engines,' SAE 912351, 1991
6 A. E1saber, W. Samenfink, M. Hallmann and S. Wittig, 'Mixing Phenomena of Fuel Sprays in Intake Manifolds,' Proceeding of ICLASS-94, pp.758-765, 1994
7 S. G. Lee, B. C. Joo, K. C. Kim and B. J. Rho, 'Influence of ALR on Disinteration Characteristics in Pnuematric Spray,' Int. J. Automotive Technology, Vol.11, No.2, pp.95-100, 2000
8 J. W. Fox, K. D. Min, W. K. Cheng and J. B. Heywood, 'Mixture Preparation in' a SI Engine with Port Fuel Injection During Starting and Warm-up,' SAE 922170, 1992
9 A. Saito, K. Kawamura and Y. Tanasawa, 'Improvement of Fuel Atomization in Electronic Fuel Injector by Air Flow,' ICLASS-'88 Sendai, Japan, pp.263-270 1988
10 M. Kashwaya, T. Kosuge, K. Nakagawa and Y. Okamoto, 'The Effect of Atomization of Fuel Injectors on Engine Performance,' SAE 900261, 1990
11 M. Iwata, M. Furuhashi and M. Ujihashi, 'Two-hole Injector Improves Transient Performance and Exhaust Emission of 4-valve Engines,' SAE 870125, 1987