Fabrication and characterization of micro-orifices for diesel fuel injectors.
Stringent emission standards are driving the development of diesel-fuel injection concepts to mitigate in-cylinder formation of particulates. While research has demonstrated significant reduction in particulate formation using micro-orifice technology, implementation requires development of industrial processes to fabricate micro-orifices with diameters as low as 50 gmm and with large length-to-diameter ratios. This paper reviews the different processes being pursued to fabricate micro-orifices and the advanced techniques applied to characterize the performance of micro-orifices. The latter include the use of phase-contrast x-ray imaging of electroless nickel-plated, micro-orifices and laser imaging of fuel sprays at elevated pressures. The experimental results demonstrate an industrially viable process to create small uniform orifices that improve spray formation for fuel injection.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- EE; USEPA
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 979549
- Report Number(s):
- ANL/ES/CP-60775; TRN: US201010%%763
- Journal Information:
- SAE Int. J. Fuels Lubr., Vol. 1, Issue 1 ; April 2007; Conference: 2008 SAE International Powertrains, Fuels and Lubricants Congress; Jun. 23, 2008 - Jun. 25, 2008; Shanghai, China
- Country of Publication:
- United States
- Language:
- ENGLISH
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