The Effects of a Pneumatic-Driven Variable Valve Timing Mechanism on the Performance of an Otto Engine

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dc.authoridUYSAL, Fatih/0000-0001-5883-9317
dc.contributor.authorUysal, Fatih
dc.contributor.authorSagiroglu, Selami
dc.date.accessioned2024-09-29T16:09:52Z
dc.date.available2024-09-29T16:09:52Z
dc.date.issued2015
dc.departmentKarabük Üniversitesien_US
dc.description.abstractIn this study, the classic cam mechanism of a single cylinder, four-stroke, 6 hp spark-ignited engine was replaced by an electro-pneumatic rocker mechanism, which is designed and manufactured to open the intake valve at low (3.7 mm), normal (5.7 mm) and high (7.7 mm) lifts between engine speeds of 1600 rpm to 2200 rpm. An air compressor was used to feed 6 bar air pressure in order to have the plungers drive the cams in an orderly manner. A control panel was used to control plungers in order to modulate the valve lifts gradually. The volumetric efficiency, torque, power and specific fuel consumption with this operation were measured at full load and compared to the values with a classic cam mechanism. The results of the study showed that decreasing the valve lift at low engine speeds and increasing the lift at high speeds improve the engine performance. Moreover, it was concluded that the idle speed can be lowered by decreasing the valve lift at low engine speeds.en_US
dc.identifier.doi10.5545/sv-jme.2015.2778
dc.identifier.endpage640en_US
dc.identifier.issn0039-2480
dc.identifier.issue11en_US
dc.identifier.scopus2-s2.0-84946820571en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage632en_US
dc.identifier.urihttps://doi.org/10.5545/sv-jme.2015.2778
dc.identifier.urihttps://hdl.handle.net/20.500.14619/7820
dc.identifier.volume61en_US
dc.identifier.wosWOS:000365142000002en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAssoc Mechanical Engineers Technicians Sloveniaen_US
dc.relation.ispartofStrojniski Vestnik-Journal of Mechanical Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectvariable valve timing (VVT)en_US
dc.subjectvalve timing and lift electronic control system (VTEC)en_US
dc.subjectOtto engineen_US
dc.subjectengine performanceen_US
dc.subjectspark ignitionen_US
dc.subjectelectro-pneumatic rocker mechanismen_US
dc.titleThe Effects of a Pneumatic-Driven Variable Valve Timing Mechanism on the Performance of an Otto Engineen_US
dc.typeArticleen_US

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