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Stratified-Charged SI & CI Engines in SRFNPH are Functioned by Forming of REABP and Radicals - SI-CVCC, SI-GDI, CI-OSKA, CI-MK - (SRFNPH: simultaneous reduction of SFC, NOx, Particulate, HC REABP: re-etrainment of active burned products)
Technical Paper
2001-01-3232
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper describes the causality discussion such as the conflicted relationship in SRFNPH (simultaneous reduction of SFC, NOx, Particulate, HC) performance characteristics in HONDA-Pre-Chamber SI-CVCC, MITSUBISHI-DISC-SI-GDI, NISSAN DISC-CI-MK and CLEAN ENGINE-DISC-CI-OSKA-DH. The processes to be SRFNPH in these four combustions are shown as follows. M-GDI prepares LGF (low grade fumigation state in 15∼10% [O2] and 400∼600K temperature) state at ignition timing as same as N-MK Zone did. OSKA has no more this. In GDi, MK and OSKA, HGF (high grade fumigation state in 15∼10% [O2] and about 1000K temperature) state that is prepared by (STIM stratified ignition mechanism) and REABP (re-entrainment of active burned products) around the ignition timing was the state to form radical species and kinetic reaction. These are very similar condition created by CVCC-REABP which was made by high-speed burned gas jet from pre-chamber. In OSKA formed rolling mushroom type spray cloud by collisions plays a role to create SRFNP characteristics without EGR, without ignition delay because of its strong REABP function. The indispensable functions in CVCC, GDI, Mk and OSKA to create SRFNPH are STIM through the stratified rotating flow with strong turbulence to form feed back function of REABP and this formed radicals and attained SRFNPH.
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Citation
Matsuoka, S., "Stratified-Charged SI & CI Engines in SRFNPH are Functioned by Forming of REABP and Radicals - SI-CVCC, SI-GDI, CI-OSKA, CI-MK -(SRFNPH: simultaneous reduction of SFC, NOx, Particulate, HC REABP: re-etrainment of active burned products)," SAE Technical Paper 2001-01-3232, 2001, https://doi.org/10.4271/2001-01-3232.Also In
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