Effects of Fuel Injection on Turbulence Enhancement in a Spray-Guided, Gasoline Direct-Injection, Optically Accessible Engine with a High-Pressure Injection System
DC Field | Value | Language |
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dc.contributor.author | Kim, Donghwan | - |
dc.contributor.author | Son, Yousang | - |
dc.contributor.author | Park, Sungwook | - |
dc.date.accessioned | 2023-07-05T04:07:28Z | - |
dc.date.available | 2023-07-05T04:07:28Z | - |
dc.date.created | 2023-06-12 | - |
dc.date.issued | 2023-04 | - |
dc.identifier.issn | 0148-7191 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186278 | - |
dc.description.abstract | In this study, the effects of fuel injection on in-cylinder flow under various injection conditions were investigated using particle image velocimetry measurements in a two-cylinder, direct-injection spark-ignition, optically accessible engine with a spray-guided injection system. Various injection timings and pressures were applied to intensify the turbulence of in-cylinder flow. Simple double-injection strategies were used to determine how multiple injections affect in-cylinder flow. The average flow speed, turbulent kinetic energy, and enhancement level were calculated to quantitatively analyze the effects of fuel injection. Fuel injection can supply additional momentum to a cylinder. However, at an early injection timing such as 300° before top dead center, in-cylinder flow development could be disturbed by fuel injection due to piston impingement and interactions between the spray and air. As the injection pressure increased, the in-cylinder flow intensified despite the possibility of increased wall and piston impingement due to lengthened spray penetration. When a double-injection strategy was applied, the second-injection timing was the dominant factor increasing turbulence intensity. As the injection timing was delayed, the effects of fuel injection on in-cylinder flow in the later portion of the compression stroke increased, but with rapid dissipation of momentum during the compression stroke. It would therefore be more effective to apply a multiple-injection strategy and inject a small amount of fuel just before ignition as the final injection to enhance turbulence. However, mixture formation near the spark plug should be considered to increase ignition stability. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | SAE International | - |
dc.title | Effects of Fuel Injection on Turbulence Enhancement in a Spray-Guided, Gasoline Direct-Injection, Optically Accessible Engine with a High-Pressure Injection System | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Sungwook | - |
dc.identifier.doi | 10.4271/2023-01-0216 | - |
dc.identifier.scopusid | 2-s2.0-85160687202 | - |
dc.identifier.bibliographicCitation | SAE Technical Papers, pp.1 - 19 | - |
dc.relation.isPartOf | SAE Technical Papers | - |
dc.citation.title | SAE Technical Papers | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 19 | - |
dc.type.rims | ART | - |
dc.type.docType | Conference paper | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | Direct injection | - |
dc.subject.keywordPlus | Engine cylinders | - |
dc.subject.keywordPlus | Engine pistons | - |
dc.subject.keywordPlus | Gasoline | - |
dc.subject.keywordPlus | Kinetic energy | - |
dc.subject.keywordPlus | Kinetics | - |
dc.subject.keywordPlus | Turbulence | - |
dc.subject.keywordPlus | Compression stroke | - |
dc.subject.keywordPlus | Gasoline direct injection engines | - |
dc.subject.keywordPlus | In-cylinder flows | - |
dc.subject.keywordPlus | Injection pressures | - |
dc.subject.keywordPlus | Injection strategy | - |
dc.subject.keywordPlus | Injection timing | - |
dc.subject.keywordPlus | Multiple injections | - |
dc.subject.keywordPlus | Optically accessible engine | - |
dc.subject.keywordPlus | PIV measurements | - |
dc.subject.keywordPlus | Spray-guided injection | - |
dc.subject.keywordPlus | Velocity measurement | - |
dc.subject.keywordAuthor | Gasoline direct-injection engine | - |
dc.subject.keywordAuthor | injection strategy | - |
dc.subject.keywordAuthor | optically accessible engine | - |
dc.subject.keywordAuthor | PIV measurements | - |
dc.subject.keywordAuthor | spray-guided injection | - |
dc.identifier.url | https://saemobilus.sae.org/content/2023-01-0216 | - |
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