A New Concept of Split Feed-Back Mixing Combustion Mechanism and the Interpretation on Simultaneous Reduction of SFC, NOx, PM & HC in DI-SI & CI Engines-Pre-Chamber-SI/CVCC, DI-SI/GDI, DI-CI/OSKA-DH, DI-CI/MK Engines- MATSUOKA Engineering Consult

Format:

Conference/Event

Author/Creator:

Matsuoka, Shin, author.

Conference Name:

2003 JSAE/SAE International Spring Fuels and Lubricants Meeting (2003-05-19 : Yokohama, Japan)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2003

Summary:

Based on the CVCC research of the author and the other three engines data, it is publishing in this paper, that the theme indicated in the title was rounded off as a new concept and the interpretation in 5 steps which were common to four engines shown in the sub-title.1st Step: THE FORMATION OF LOW GRADE FUMIGATED (LFG) ATMOSPHERE AND CURLING VORTEX CELLS (CVC) OF MIXTURE; The fuel is in LGF atmosphere. Also crowds of cvcs are generated by extraordinary disturbed flow made by high-speed crash of jet especially against the wall. 2nd Step: FUNCTIONING OF THE HYPOTHESIS OF SPLIT FEED-BACK MIXING COMBUSTION MECHANISM (SFBMCM); When these are ignited, the flow and burning speed of each crowds was faster or more, then the flame was splitten or intermittent and became fired, non-fired, or on reacting and so on. Then these mutually interfere, react, feed each other back and mix while being intermingle. 3rd Step: RE-ENTRAINMENT OF ACTIVE BURNED PRODUCTS (REABP) PHENOMENON; Some of the burned flame feed back into unburned mixture that it caused the creation of phenomenon of REABP. 4th Step: HIGH GRADE FUMIGATION (HGF) ATMOSPHERE; Reaction portion becomes transiently to lower [O2] less than 10% and more than 1100K to less than 2100K in HGF by REABP. 5th Step: RADICAL FORMATION; At the front half of burning period, UV radical is formed, held and precursor reaction spread all over the area. At the later half period it detonates, forms IR radical and lasts, overlappes with soot and UHC and these re-burn off that also SFC improved. Reacting area of flame is in low [O2], less than 2100K that [NOx] restrained. 6th Step: ACHIEVEMENT OF SRFNPH. 7: VERIFICATION BY INSTRUMENTATION: Each state at various conditions as upper mentioned is verified through the measurements and references of spectroscopy, high-speed photography, flame temperature, and ROHR, et ceteraAbbreviation: LGF; low-grade fumigation atmosphere in less than 1510%[O2] and 650850K temperature. HGF; high-grade fumigation atmosphere in less than 10% [O2] and more than about 1100K temperature. ATC; aero-thermo-chemical. CVC; curling vortex cell. SFBMCM; split feed back mixing combustion mechanism. REABP; re-entrainment of active burned products. SRFNPH; simultaneous reduction of SFC, NOx, PM, HC

Notes:

Vendor supplied data

Publisher Number:

2003-01-1778

Access Restriction:

Restricted for use by site license