FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2555887133> ?p ?o ?g. }

• W2555887133 abstract "Several technologies and modifications exist to increase the fuel efficiency of passenger vehicles in general and spark ignition engines in particular. Combining a spark ignition engine with an electric drive system in hybrid powertrain and thermodynamic cycle improvements are two such approaches with the potential to greatly reduce fuel consumption. Thermodynamic efficiency can be improved by lean engine operation. Extension of the lean limit leading to unthrottled operation is possible with lean stratified combustion. Stratified combustion leads to increased soot formation in addition to NOx with standard catalyst after treatment. Ethanol is an alternative fuel for spark ignition engines which is renewable and potentially leads to a reduction in soot formation in lean stratified combustion. In addition to liquid fuels, spark ignition engines are able to operate with gaseous fuels.The potential for reduction of spark ignition engine emissions during engine load transients using assistance from the electric powertrain was investigated. NOx emissions during engine load transients were reduced with simulated electric powertrain assistance. CO, hydrocarbon and soot emissions occurred at the beginning and end of engine load transients due to transient fuel rich conditions in the engine as a result of incorrect fuel metering. Electric assistance did not reduce soot emissions as they were unconnected to the engine load value during the transient.Combustion, sources of soot formation and soot oxidation in lean, spark ignited, stratified combustion of E10 (10 % vol. ethanol, 90 % vol. gasoline) and E85 were investigated in an engine with optical access using pressure analysis, high speed imaging, OH * chemiluminescence and soot incandescence. Diffusion combustion of liquid fuel films on the surface of the piston, referred to as a pool fire, was a major source of soot formation for both E10 and E85 with a single injection due to the fuel spray impingement on the piston. The effect was magnified when the engine load was increased. For E10 soot formation also occurred in the gas phase. Pool fires were the sole source of soot formation with E85 as the fuel. Splitting the single injection into multiple injections reduced the magnitude of soot formation from pool fires for both E10and E85. Soot formation in the gas phase with E10, appeared to increase slightly with multiple injection for both engine loads. Multiple injections led to an increase in the rate and stability of combustion in all cases.Gaseous fuels such as hydrogen and methane amongst others are another class of alternative fuels for spark ignited engines. The self similarity and the Turner model for the structure of transient jets during injection with a range of injection and ambient pressures was investigated with high speed schlieren imaging of helium jets. The Turner model was found to be an accurate approximation for the structure of the jet in all cases. The ratio of the jet width to the length was found to vary with the injection pressure to ambient pressure ratio indicating that the jet width to length ratio varied with different pressure ratio." @default.
• W2555887133 created "2016-11-30" @default.
• W2555887133 creator A5021124083 @default.
• W2555887133 date "2016-01-01" @default.
• W2555887133 modified "2023-09-23" @default.
• W2555887133 title "Spark Ignition Combustion of Direct Injected Alternative Fuels" @default.
• W2555887133 hasPublicationYear "2016" @default.
• W2555887133 type Work @default.
• W2555887133 sameAs 2555887133 @default.
• W2555887133 citedByCount "0" @default.
• W2555887133 crossrefType "dissertation" @default.
• W2555887133 hasAuthorship W2555887133A5021124083 @default.
• W2555887133 hasConcept C105923489 @default.
• W2555887133 hasConcept C106169591 @default.
• W2555887133 hasConcept C127413603 @default.
• W2555887133 hasConcept C146978453 @default.
• W2555887133 hasConcept C148414945 @default.
• W2555887133 hasConcept C159063594 @default.
• W2555887133 hasConcept C171146098 @default.
• W2555887133 hasConcept C178790620 @default.
• W2555887133 hasConcept C185592680 @default.
• W2555887133 hasConcept C203032635 @default.
• W2555887133 hasConcept C2775925408 @default.
• W2555887133 hasConcept C39432304 @default.
• W2555887133 hasConcept C39573554 @default.
• W2555887133 hasConcept C511840579 @default.
• W2555887133 hasConcept C53932193 @default.
• W2555887133 hasConcept C96532641 @default.
• W2555887133 hasConcept C96949565 @default.
• W2555887133 hasConceptScore W2555887133C105923489 @default.
• W2555887133 hasConceptScore W2555887133C106169591 @default.
• W2555887133 hasConceptScore W2555887133C127413603 @default.
• W2555887133 hasConceptScore W2555887133C146978453 @default.
• W2555887133 hasConceptScore W2555887133C148414945 @default.
• W2555887133 hasConceptScore W2555887133C159063594 @default.
• W2555887133 hasConceptScore W2555887133C171146098 @default.
• W2555887133 hasConceptScore W2555887133C178790620 @default.
• W2555887133 hasConceptScore W2555887133C185592680 @default.
• W2555887133 hasConceptScore W2555887133C203032635 @default.
• W2555887133 hasConceptScore W2555887133C2775925408 @default.
• W2555887133 hasConceptScore W2555887133C39432304 @default.
• W2555887133 hasConceptScore W2555887133C39573554 @default.
• W2555887133 hasConceptScore W2555887133C511840579 @default.
• W2555887133 hasConceptScore W2555887133C53932193 @default.
• W2555887133 hasConceptScore W2555887133C96532641 @default.
• W2555887133 hasConceptScore W2555887133C96949565 @default.
• W2555887133 hasLocation W25558871331 @default.
• W2555887133 hasOpenAccess W2555887133 @default.
• W2555887133 hasPrimaryLocation W25558871331 @default.
• W2555887133 hasRelatedWork W165920994 @default.
• W2555887133 hasRelatedWork W2067999182 @default.
• W2555887133 hasRelatedWork W2108159559 @default.
• W2555887133 hasRelatedWork W2285109324 @default.
• W2555887133 hasRelatedWork W2316203540 @default.
• W2555887133 hasRelatedWork W2397895437 @default.
• W2555887133 hasRelatedWork W246310658 @default.
• W2555887133 hasRelatedWork W2563525783 @default.
• W2555887133 hasRelatedWork W2566256977 @default.
• W2555887133 hasRelatedWork W2594373293 @default.
• W2555887133 hasRelatedWork W2765288156 @default.
• W2555887133 hasRelatedWork W2791142541 @default.
• W2555887133 hasRelatedWork W2886831925 @default.
• W2555887133 hasRelatedWork W2897340376 @default.
• W2555887133 hasRelatedWork W2913497519 @default.
• W2555887133 hasRelatedWork W3001367651 @default.
• W2555887133 hasRelatedWork W3005141614 @default.
• W2555887133 hasRelatedWork W3192815349 @default.
• W2555887133 hasRelatedWork W3206792862 @default.
• W2555887133 hasRelatedWork W3149175489 @default.
• W2555887133 isParatext "false" @default.
• W2555887133 isRetracted "false" @default.
• W2555887133 magId "2555887133" @default.
• W2555887133 workType "dissertation" @default.