FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3171925992> ?p ?o ?g. }

• W3171925992 abstract "This work investigates through numerical simulation, the operation of a big bore direct fuel injection spark ignition engine, at part load under stratified operation. It evaluates fuel-air mixture preparation and combustion process with the adoption of detailed chemical kinetics mechanisms for both Isooctane and Ethanol, and applying adaptive mesh refinement to capture the turbulent flame brush. The investigation is split in 3 main parts. In the first part, with Isooctane as fuel, the impact of in-cylinder turbulence level induced by squish has shown that the attempt to isolate the squish ratio, maintaining the bowl shape, for the evaluated cases have led to a scenario not more appropriate for flame initiation and propagation for 2 of the 3 geometries. But the observations made during this initial stage have led to the proposal of a fourth geometry to improve the mixture formation and combustion process. As it was seen the combustion process was about 11.5 deg faster with the new piston bowl proposed. In the second part, still with Isooctane and maintaining the new proposed piston, evaluates the influence of two types of hollow cone fuel injectors, an inwardly and an outwardly opening types, where maintain fixed spark timing, the end of injection is varied and compared among the two cases, while targeting for the same gross IMEP output. The main results are that the outwardly opening injector case resulted in better fuel-air mixture preparation, even with a late end of injection. This led to higher combustion efficiency and lower unburned hydrocarbon, CO and soot emissions, while increasing NOx emissions. The 10-90% MFB burn duration is higher for the outwardly opening injector case. In the last part the outwardly opening spray injector from the previous part, but using Ethanol as fuel has shown that to attain the same IMEP level the injected fuel mass is increased with Ethanol, and with its higher latent heat of vaporization, the time required to have an ignitable fuel-air mixture more than doubled that for the Isooctane case. Another important effect of these is the excessive increase of THC emissions. The overall combustion duration was faster for the Ethanol, mainly as the last part of the combustion was almost twice as fast as for the Isooctane case. It may be a consequence of a more homogeneous fuel-air mixture cloud as the fuel has more time to diffuse as the EOI is more advanced. The in-cylinder charge cooling effect of Ethanol led to a reduction in the in-cylinder temperature, leading to a reduction in NOx formation. CO emissions was also lowered, which is maybe attributed to either the reduced chemical dissociation with the lower temperatures, or reduced fuel rich regions. The reduced fuel rich regions also explain the reason for lower soot emissions." @default.
• W3171925992 created "2021-06-22" @default.
• W3171925992 creator A5014442166 @default.
• W3171925992 date "2011-01-01" @default.
• W3171925992 modified "2023-09-24" @default.
• W3171925992 title "3D numerical investigation of mixture formation and combustion in a DISI engine at part-load under stratified operation" @default.
• W3171925992 hasPublicationYear "2011" @default.
• W3171925992 type Work @default.
• W3171925992 sameAs 3171925992 @default.
• W3171925992 citedByCount "0" @default.
• W3171925992 crossrefType "journal-article" @default.
• W3171925992 hasAuthorship W3171925992A5014442166 @default.
• W3171925992 hasConcept C103697071 @default.
• W3171925992 hasConcept C105923489 @default.
• W3171925992 hasConcept C106169591 @default.
• W3171925992 hasConcept C120665830 @default.
• W3171925992 hasConcept C121332964 @default.
• W3171925992 hasConcept C127413603 @default.
• W3171925992 hasConcept C135186712 @default.
• W3171925992 hasConcept C146978453 @default.
• W3171925992 hasConcept C159063594 @default.
• W3171925992 hasConcept C165699331 @default.
• W3171925992 hasConcept C171146098 @default.
• W3171925992 hasConcept C178790620 @default.
• W3171925992 hasConcept C185592680 @default.
• W3171925992 hasConcept C192562407 @default.
• W3171925992 hasConcept C196558001 @default.
• W3171925992 hasConcept C199360897 @default.
• W3171925992 hasConcept C199524791 @default.
• W3171925992 hasConcept C203311528 @default.
• W3171925992 hasConcept C2777703250 @default.
• W3171925992 hasConcept C2781215313 @default.
• W3171925992 hasConcept C41008148 @default.
• W3171925992 hasConcept C511840579 @default.
• W3171925992 hasConcept C53932193 @default.
• W3171925992 hasConcept C548081761 @default.
• W3171925992 hasConcept C57879066 @default.
• W3171925992 hasConcept C78519656 @default.
• W3171925992 hasConcept C9526370 @default.
• W3171925992 hasConcept C96949565 @default.
• W3171925992 hasConceptScore W3171925992C103697071 @default.
• W3171925992 hasConceptScore W3171925992C105923489 @default.
• W3171925992 hasConceptScore W3171925992C106169591 @default.
• W3171925992 hasConceptScore W3171925992C120665830 @default.
• W3171925992 hasConceptScore W3171925992C121332964 @default.
• W3171925992 hasConceptScore W3171925992C127413603 @default.
• W3171925992 hasConceptScore W3171925992C135186712 @default.
• W3171925992 hasConceptScore W3171925992C146978453 @default.
• W3171925992 hasConceptScore W3171925992C159063594 @default.
• W3171925992 hasConceptScore W3171925992C165699331 @default.
• W3171925992 hasConceptScore W3171925992C171146098 @default.
• W3171925992 hasConceptScore W3171925992C178790620 @default.
• W3171925992 hasConceptScore W3171925992C185592680 @default.
• W3171925992 hasConceptScore W3171925992C192562407 @default.
• W3171925992 hasConceptScore W3171925992C196558001 @default.
• W3171925992 hasConceptScore W3171925992C199360897 @default.
• W3171925992 hasConceptScore W3171925992C199524791 @default.
• W3171925992 hasConceptScore W3171925992C203311528 @default.
• W3171925992 hasConceptScore W3171925992C2777703250 @default.
• W3171925992 hasConceptScore W3171925992C2781215313 @default.
• W3171925992 hasConceptScore W3171925992C41008148 @default.
• W3171925992 hasConceptScore W3171925992C511840579 @default.
• W3171925992 hasConceptScore W3171925992C53932193 @default.
• W3171925992 hasConceptScore W3171925992C548081761 @default.
• W3171925992 hasConceptScore W3171925992C57879066 @default.
• W3171925992 hasConceptScore W3171925992C78519656 @default.
• W3171925992 hasConceptScore W3171925992C9526370 @default.
• W3171925992 hasConceptScore W3171925992C96949565 @default.
• W3171925992 hasLocation W31719259921 @default.
• W3171925992 hasOpenAccess W3171925992 @default.
• W3171925992 hasPrimaryLocation W31719259921 @default.
• W3171925992 hasRelatedWork W1731985808 @default.
• W3171925992 hasRelatedWork W1980820116 @default.
• W3171925992 hasRelatedWork W2068251222 @default.
• W3171925992 hasRelatedWork W2142360502 @default.
• W3171925992 hasRelatedWork W2350518541 @default.
• W3171925992 hasRelatedWork W2364960343 @default.
• W3171925992 hasRelatedWork W2551322885 @default.
• W3171925992 hasRelatedWork W2555887133 @default.
• W3171925992 hasRelatedWork W2566256977 @default.
• W3171925992 hasRelatedWork W2754111186 @default.
• W3171925992 hasRelatedWork W2765288156 @default.
• W3171925992 hasRelatedWork W2765558692 @default.
• W3171925992 hasRelatedWork W2779952511 @default.
• W3171925992 hasRelatedWork W2888117036 @default.
• W3171925992 hasRelatedWork W2889465976 @default.
• W3171925992 hasRelatedWork W2899261471 @default.
• W3171925992 hasRelatedWork W2946096685 @default.
• W3171925992 hasRelatedWork W3028999734 @default.
• W3171925992 hasRelatedWork W3206792862 @default.
• W3171925992 hasRelatedWork W2878804474 @default.
• W3171925992 isParatext "false" @default.
• W3171925992 isRetracted "false" @default.
• W3171925992 magId "3171925992" @default.
• W3171925992 workType "article" @default.