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Fuel Spray Pattern Control Using L-Step Nozzle for Swirl-Type Injector
Technical Paper
2004-01-0540
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
We propose a spray pattern control method for swirl-type injectors in direct injection (DI) gasoline engines. An L-cut orifice nozzle (L-Step nozzle) that produces a horseshoe spray pattern is used to create a rich and lean concentration region. To further control the distribution of fuel, the relationship between the nozzle geometry and the spray pattern is investigated. The mechanism for a horseshoe spray formation is hypothesized and verified through experiment. The spray shape and fuel distribution is found to be controllable by configuring the L-cut step-walls. Furthermore, it is discovered that independent control of rich and lean region distribution is possible by arranging the step-wall position and height.
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Authors
- Motoyuki Abe - Mechanical Engineering Research Laboratory, Hitachi, Ltd.
- Yoshio Okamoto - Mechanical Engineering Research Laboratory, Hitachi, Ltd.
- Yuzo Kadomukai - Mechanical Engineering Research Laboratory, Hitachi, Ltd.
- Yoshiyuki Tanabe - Automotive System Group, Hitachi, Ltd.
- Toru Ishikawa - Automotive System Group, Hitachi, Ltd.
Citation
Abe, M., Okamoto, Y., Kadomukai, Y., Tanabe, Y. et al., "Fuel Spray Pattern Control Using L-Step Nozzle for Swirl-Type Injector," SAE Technical Paper 2004-01-0540, 2004, https://doi.org/10.4271/2004-01-0540.Also In
References
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