DC Field | Value | Language |
---|---|---|
dc.contributor.author | 공장식 | ko |
dc.contributor.author | 박세익 | ko |
dc.contributor.author | 배충식 | ko |
dc.contributor.author | 김장헌 | ko |
dc.contributor.author | 국상훈 | ko |
dc.date.accessioned | 2009-12-29T02:39:07Z | - |
dc.date.available | 2009-12-29T02:39:07Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2007-03 | - |
dc.identifier.citation | 한국자동차공학회 논문집, v.15, no.2, pp.1 - 7 | - |
dc.identifier.issn | 1225-6382 | - |
dc.identifier.uri | http://hdl.handle.net/10203/15977 | - |
dc.description.abstract | The effect of injector geometries including the injection angle and number of nozzle holes on homogeneous charge compression ignition (HCCI) engine combustion has been investigated in an automotive-size single-cylinder diesel engine. The HCCI engine has advantages of simultaneous reduction of PM and NO_(x) emissions by achieving the spatially homogenous distribution of diesel fuel and air mixture, which results in no fuel-rich zones and low combustion temperature. To make homogeneous mixture in a direct-injection diesel engine, the fuel is injected at early timing. The early injection guarantees long ignition delay period resulting in long mixing period to form a homogeneous mixture. The wall-impingement of the diesel spray is a serious problem in this type of application. The impingement occurs due to the low in-cylinder density and temperature as the spray penetrates too deep into the combustion chamber. A hole-type injector (5 holes) with smaller angle (100°) than the conventional one (150°) was applied to resolve this problem. The multi-hole injector (14 holes) was also tested to maximize the atomization of diesel fuel. The macroscopic spray structure was visualized in a spray chamber, and the spray penetration was analyzed. Moreover, the effect of injector geometries on the power output and exhaust gases was tested in a single-cylinder diesel engine. Results showed that the small injection angle minimizes the wan-impingement of diesel fuel that results in high power output and low PM emission. The multi-hole injector could not decrease the spray penetration at low in-cylinder pressure and temperature, but still showed the advantages in atomization and premixing. | - |
dc.language | Korean | - |
dc.language.iso | ko | en |
dc.publisher | 한국자동차공학회 | - |
dc.title | 분사각 및 분공 직경이 예혼합 압축착화 엔진 연소에 미치는 영향 | - |
dc.title.alternative | The Effect of Injection Angle and Nozzle Diameter on HCCI Combustion | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.citation.volume | 15 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 1 | - |
dc.citation.endingpage | 7 | - |
dc.citation.publicationname | 한국자동차공학회 논문집 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.identifier.kciid | ART001054721 | - |
dc.contributor.localauthor | 배충식 | - |
dc.contributor.nonIdAuthor | 공장식 | - |
dc.contributor.nonIdAuthor | 박세익 | - |
dc.contributor.nonIdAuthor | 김장헌 | - |
dc.contributor.nonIdAuthor | 국상훈 | - |
dc.subject.keywordAuthor | HCCI (homogeneous charge compression ignition) | - |
dc.subject.keywordAuthor | Small injection angle | - |
dc.subject.keywordAuthor | Multi-hole injector | - |
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