SAE Technical Paper Series 2004
DOI: 10.4271/2004-01-2945
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Mixture Preparation and Combustion via LIEF and LIF of Combustion Radicals in a Direct-Injection, HCCI Diesel Engine

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Cited by 34 publications
(26 citation statements)
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“…Adjusting the SOI timing in 1°CA increments allows some degree of control over ignition timing however this is clearly not an ideal solution to achieve combustion phasing matching. Firstly, adjusting the SOI timing alters the fuel jet wall impingement location within the piston bowl which can influence mixture preparation, particularly in such wall-guided combustion chamber systems as discussed in Reference [4]. Secondly, Figure 9 reveals that despite adjusting the SOI timing, differences in pressure rise rates between the optical and metal engines are still observed.…”
Section: Materials and Heat Transfer Effectsmentioning
confidence: 91%
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“…Adjusting the SOI timing in 1°CA increments allows some degree of control over ignition timing however this is clearly not an ideal solution to achieve combustion phasing matching. Firstly, adjusting the SOI timing alters the fuel jet wall impingement location within the piston bowl which can influence mixture preparation, particularly in such wall-guided combustion chamber systems as discussed in Reference [4]. Secondly, Figure 9 reveals that despite adjusting the SOI timing, differences in pressure rise rates between the optical and metal engines are still observed.…”
Section: Materials and Heat Transfer Effectsmentioning
confidence: 91%
“…Commercial gasoline and Diesel fuels contain aromatic and naphthenic compounds (considered fuel "impurities" from a laser diagnostic viewpoint) which result in significant LIF emission upon ultraviolet (UV) laser excitation. For gasoline engine studies, fuels such as isooctane and Primary Reference Fuels (PRF) which are mixtures of isooctane and n-heptane are frequently used while on Diesel engines, decane and dodecane fuels are more commonly employed [3,4] since their Boiling Points are reasonably close to the lower Boiling Points of standard Diesel fuel (dodecane: T b = 216°C, decane: T b = 174°C). However decane and dodecane fuels have significantly higher Cetane Numbers (dodecane: CN~71, decane: CN~76) compared to standard Diesel fuel (CN~52) which will inevitably result in shorter auto-ignition delays.…”
Section: Representative Fuels For Optical Engine Studiesmentioning
confidence: 99%
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“…For higher load operating conditions, the NADI™ concept can be operated in conventional Diesel (diffusionlimited combustion) mode. Further details on the NADI™ concept have previously been reported in [7,8].…”
Section: Fluorescence (Lif) Imaging Of In-cylinder Unburned Hc Withinmentioning
confidence: 99%
“…Since it has been shown from previous studies [7] that significant fuel spray-wall interaction occurs in the wallguided chamber geometry, the potential for fuel film formation and the implications on HC emissions might be considerable. In order to study the role of fuel films on the all-metal engine, a so-called "multi-fuel" approach was adopted in which two fuels of different volatilities were tested.…”
Section: Figurementioning
confidence: 99%