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Development of Micro-Diesel Injector Nozzles via MEMS Technology and Effects on Spray Characteristics
Technical Paper
2001-01-0528
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2001 World Congress
Language:
English
Abstract
Micro-machined planar orifice nozzles have been developed and used with commercially produced diesel injection systems. Such a system may have the capability to improve the spray characteristics in DI diesel engines. The availability of a MEMS (Micro-Electro-Mechanical-Systems) processing sequence supported the construction of micro-planar orifice nozzles, and micro-systems technology was also employed in our macro-instrumentation.
To demonstrate this process, fourteen MEMS nozzles were fabricated with deep X-ray lithography and electroplating technology. The circular orifice diameters were varied from 40 to 260 microns and the number of orifices varied from one to 169. Three plates with non-circular orifices were also fabricated to examine the effect of orifice shape on spray characteristics. These nozzles were then attached to commercial injectors and the associated injection systems were used for the spray experiments. Given these novel injection systems, jet spray characteristics of micro-machined nozzles were investigated experimentally at two different injection pressures. Current test results show the expected qualitative trends in spray kinematics and drop size, but the quantitative magnitudes of the behavior are less dependent on geometry than first anticipated. Specifically, high pressure data shows only modest gains with a multi-hole configuration. Non-planar configurations are expected to show improved performance.
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Citation
Baik, S., Blanchard, J., and Corradini, M., "Development of Micro-Diesel Injector Nozzles via MEMS Technology and Effects on Spray Characteristics," SAE Technical Paper 2001-01-0528, 2001, https://doi.org/10.4271/2001-01-0528.Also In
References
- Peterson, K.E. ‘Silicon as a Mechanical Material’ Proc. IEEE 70 5 May 1982 420 457
- Guckel, H. Christenson, T. Skrobis, K. ‘Metal Micromechanisms via Deep X-Ray Lithography, Electroplating and Assembly’ J.Micomech. Microeng. 2 1992 225 228
- Ballandras, S. et al. ‘Deep Etch X-Ray Lithography using Silicon-Gold Masks Fabricated by Deep Etch UV Lithography and Electroforming’ J. Micromech. Microeng. 5 1995 203 208
- Rogner, A. Eicher, J. Munchmeyer, D. Peters, R-P. Mohr, J. ‘The LIGA Technique-What are the New Opportunities’ J.Micromech. Microeng. 2 1992 133 140
- Guckel, H. Skrobis, K. Christensen, T. Klein, J. ‘Micromechanics for Actuators via Deep X-Ray Lithography’ Proc. SPIE's 1994 Symposium on Microlithography February 27 March 4 1994 39 47 San Jose, CA, USA
- Guckel, H. ‘Deep X-Ray Lithography for Micromechanics and Precision Engineering’ Synchrotron Radiation Instrumentation (Invited), Advanced Photon Source October 19 1995 Argonne, USA
- Becker, E. W. Bier, W. Ehrfeld, K. Schubert, K. Schutte, R. Seidel, D. ‘Uranium Enrichment by the Separation Nozzle Process’ Naturwissenschaften 63 1976 407 411
- Becker, E. W. et al. ‘Production of Separation-Nozzle Systems for Uranium Enrichment by a Combination of X-Ray Lithography and Galvanoplastics’ Naturwissenschaften 69 1982 520 523
- Gravesen, P. Branebjerg, J. Jensen, O. ‘Microfluidics a Review’ J. Micromech. Microeng. 3 1993 168 182
- Schomburg W. Vollmer J. Bustgens B. Fahrenberg J. Hein H. Menz W. ‘Microfluidic Components in LIGA Technique’ J. Micromech. Microengr. 4 1994 186 191
- Bassous, E. Taub, H. H. Kuhn, L. ‘Ink Jet Printing Nozzle Arrays Etched in Silicon’ Appl. Phys. Lett. 31 1977 135 7
- Tseng, F. Linder, C. Kim, C. Ho, C. ‘Control of Mixing with Micro Injectors for Combustion Application’ Microelctromechanical Systems ASME 59 1996 183 187
- Tseng, F. Kim, C. Ho, C. ‘A Microinjector Free of Satellite Drops and Characterization of the Ejected Droplets’ Symposium on Applications of Micro-Fabrication to Fluid Mechanics, 1998 ASME International Mechanical Engineering Congress and Expositions
- Gardner, R. Horn, W. Rhoades, M. Wells, M. Yockey, S. ‘Silicon Mocromachined Compound Nozzle’ May 9 1989
- Gardner, R. Giachino, J. Hora, W. Rhoades, M. Wells, M. Yockey, S. ‘Fuel Injector with Silicon Nozzle’ March 13 1990
- Hamid, M. Kim, H. Im, K. Lai, M. Nuglisch, H. Dressler, J. ‘Effect of Pressure Modulation on Micro-Machined Port Fuel Injector Performance’ Eighth International Conference on Liquid Atomization & Spray Systems Pasadena, California 2000 546 551
- Snyder, H. ‘Efficient Liquid Atomization using Gas Flows and Novel Micro-Machining Techniques’ University of Wisconsin-Madison 1997
- Kobori, S. Kamimoto, T. Kosaka, H. ‘Ignition, Combustion and Emissions in a DI Diesel Engine Equipped with a Micro-Hole Nozzle’ SAE 960321 1996
- Baik, S. Goney, K. H. Kang, S. Murphy, J. Blanchard, J. Corradini, M. ‘Development of Micro-Diesel Injector Nozzles via MEMS Technology and Initial Results for Diesel Sprays’ SAE 1999-01-3645 1999
- Baik, S. Kang, S. Blanchard, J. Corradini, M. ‘Development of Micro-Diesel Injector Nozzles via MEMS Technology and Effects on Spray Characteristics’ Eighth International Conference on Liquid Atomization & Spray Systems Pasadena, California 2000 782 789
- Arai, M. Tabata, M. Hiroyasu, H. Shimizu, M. ‘Disintegrating Process and Spray Characterization of Fuel Jet Injected by a Diesel Nozzle’ SAE 840275 1984
- Ashgriz, N. Poo, J.Y. ‘Coalescence and separation in binary collisions of liquid drops’ J. Fluid Mech. 221 1990 183 204