prikaz prve stranice dokumenta POGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA
Access restricted to students and staff of home institution
master's thesis
POGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA
2017. urn:nbn:hr:190:825111
Tolić, Maik
University of Rijeka
Faculty of Engineering

Cite this document

Tolić, M. (2017). POGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA (Master's thesis). Rijeka: University of Rijeka, Faculty of Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:190:825111

Tolić, Maik. "POGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA." Master's thesis, University of Rijeka, Faculty of Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:190:825111

Tolić, Maik. "POGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA." Master's thesis, University of Rijeka, Faculty of Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:190:825111

Tolić, M. (2017). 'POGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA', Master's thesis, University of Rijeka, Faculty of Engineering, accessed 01 April 2025, https://urn.nsk.hr/urn:nbn:hr:190:825111

Tolić M. POGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA [Master's thesis]. Rijeka: University of Rijeka, Faculty of Engineering; 2017 [cited 2025 April 01] Available at: https://urn.nsk.hr/urn:nbn:hr:190:825111

M. Tolić, "POGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA", Master's thesis, University of Rijeka, Faculty of Engineering, Rijeka, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:190:825111

Please login to the repository to save this object to your list.
Metadata
TitlePOGON ISPUŠNOG VENTILA BRODSKOG DIZELSKOG MOTORA
AuthorMaik Tolić
MentorVladimir Medica (mentor)
Committee memberKristian Lenić (predsjednik povjerenstva)
GranterUniversity of Rijeka
Faculty of Engineering
Rijeka
Defense date and country2017-09, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Ovim proračunom prikazani su radni parametri hidrauličkog pogona ispušnog ventila. Prikazane su tri krivulje analize dinamike ispušnog ventila: krivulja hoda ventila, krivulja brzine ventila i krivulja ubrzanja ventila u ovisnosti o kutnom pomaku bregastog vratila. Kod proračuna pneumatske opruge potrebno je krenuti od sile prednapona u opruzi ventila kako bi osiguralo potpuno zatvaranje ventila nakon prelaska kotačića po brijegu ispušnog ventila. Pneumatska opruga mora stalno održavati... More pogon ventila u kontaktu s brijegom na bregastom vratilu. Slikama su prikazane i proračunate sile koje djeluju na pomak ventila. Težina ventila i sila tlaka na gornju stranu ventila sudjeluju u otvaranju, dok s donje strane pladnja ventila sila tlaka plinova sudjeluje u njegovom zatvaranju, kao i sila unutar pneumatske opruge. Silu tlaka plinova vrlo je važno uzeti u obzir pri proračunu, dok se ona u literaturi uopće ne spominje. Korištenjem pumpe hidrauličkog ulja za pogon ispušnog ventila i pneumatske opruge za povrat, omogućen je pouzdan i stabilan rad ispušnog ventila. Smanjene su emisije plinova i potrošnja goriva uz održanu optimalnu snagu i brzinu. Less
Abstract (english)
Throughout this calculation paper, the working parameters of the hydraulic exhaust valve propulsion are displayed. Three curve graphs representing the analysis of the exhaust valve dynamics are used. The first curve represents the axial displacement of the valve, the second curve represents the speed of the valve and finally the third curve represents the correlation of the valve acceleration with the angular displacement of the camshaft. During the calculation process of the pneumatic... More spring, it is necessary to start with the pre-stress force in the spring of the valve to insure a complete closure of the valve after the wheel has passed over the cam of the exhaust valve. The air spring must constantly maintain the actuator pump in contact with the cam on the camshaft. In addition, there are multiple calculations displayed, concerning the forces acting on the movement of the valves. Valve weight and pressure force on the upper side of the valve are involved in the opening of the valve, while the valve platter on the bottom side, affected by the gas pressure force, is involved in the closing of the valve as the air spring force. The gas pressure force is usually omitted from literature but is crucial for correct calculations. The uses of hydraulic oil pump on the propulsion of the exhaust valve and the pneumatic return spring have made it possible to significantly improve the ships propulsion machine. As a result of this improvement the emission of gasses and the fuel consumption have decreased while keeping the optimal engine power and speed. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:190:825111
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2017-11-06 12:51:42
accessibility

closeAccessibilityrefresh

If you wish to permanently save changes, click on Save, if not - your settings will be reset when you restart the browser.