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undergraduate thesis
Main engine starting air system
2018. urn:nbn:hr:187:722383
Arnaut, Alen
University of Rijeka
Faculty of Maritime Studies
Department of Marine Engineering and Ship Power Systems

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Arnaut, A. (2018). Main engine starting air system (Undergraduate thesis). Rijeka: University of Rijeka, Faculty of Maritime Studies. Retrieved from https://urn.nsk.hr/urn:nbn:hr:187:722383

Arnaut, Alen. "Main engine starting air system." Undergraduate thesis, University of Rijeka, Faculty of Maritime Studies, 2018. https://urn.nsk.hr/urn:nbn:hr:187:722383

Arnaut, Alen. "Main engine starting air system." Undergraduate thesis, University of Rijeka, Faculty of Maritime Studies, 2018. https://urn.nsk.hr/urn:nbn:hr:187:722383

Arnaut, A. (2018). 'Main engine starting air system', Undergraduate thesis, University of Rijeka, Faculty of Maritime Studies, accessed 10 April 2025, https://urn.nsk.hr/urn:nbn:hr:187:722383

Arnaut A. Main engine starting air system [Undergraduate thesis]. Rijeka: University of Rijeka, Faculty of Maritime Studies; 2018 [cited 2025 April 10] Available at: https://urn.nsk.hr/urn:nbn:hr:187:722383

A. Arnaut, "Main engine starting air system", Undergraduate thesis, University of Rijeka, Faculty of Maritime Studies, Rijeka, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:187:722383

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Metadata
TitleMain engine starting air system
Title (croatian)Sustav zraka za upućivanje glavnog motora
AuthorAlen Arnaut
MentorDean Bernečić (mentor)
Committee memberPredrag Kralj (predsjednik povjerenstva)
Committee memberDavor Lenac (član povjerenstva)
GranterUniversity of Rijeka
Faculty of Maritime Studies
(Department of Marine Engineering and Ship Power Systems)
Rijeka
Defense date and country2018-09-18, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Traffic and Transport Technology
Abstract
The starting air system described in this paper is used on engines with the fixed pitch propeller directly connected to the engine. Operations carried out by the system are: reversing, starting, sending speed signal and stopping of the engine. In order to achieve reversing operations in engine cycles must be retimed. This is done by reversing mechanism and starting air distributor retiming. When the direction of rotation is set, starting air is introduced into relevant cylinders and the engine... More starts to rotate. After it reaches appropriate speed, fuel is injected, and minimum speed is obtained. By sending signal to the governor engine speed is increased or decreased, depending on the command. When the needle valve on top of fuel pump is actuated engine is stopped. Regarding safety, systems is provided with several interlocks which prevent potentially dangreous events. In case of potential damage to the engine, slowdown and shutdown actions are carried out by the safety system. Less
Abstract (croatian)
Sustav zraka za upućivanje koji je opisan u ovome radu koristi se na glavnim motorima koji su direktno spojeni za brodski vijak koji ima neprekretna krila. Operacije koje se obavljaju tim sustavom jesu: prekretanje, upućivanje, povećavanje broja okretaja te zaustavljanje motora. Kako bi se postiglo prekretanje motora počeci operacija u ciklusu rada motora se moraju ponovno vremenski uskladiti. To se postiže pomoću prekretnog mehanizma te promjene položaja distributera zraka. Jednom kada je... More smjer okretanja motora zadan, uputni zrak ulazi u unaprijed određene cilindre te se motor počinje okretati. Nakon što je postigao dovoljnu brzinu, gorivo se uštrcava i minimalna brzina je postignuta. Slanjem signala do regulatora broja okretaja, broj okretaja motora se povećava ili smanjuje ovisno o naredbi. Kada se aktivira igličasti ventil na vrhu visokotlačne pumpe goriva, motor se zaustavlja. Zbog očuvanja sigurnosti, sistem je opremljen s više blokada čija je uloga sprječavanje potencijalno opasnih događaja. U slučaju potencijalne opasnosti za oštećenje motora, akcije usporavanja i zaustavljanja motora izvršavaju se pomoću sigurnosnog sustava. Less
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:187:722383
Study programmeTitle: Marine Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka brodostrojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka brodostrojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-01-22 08:24:49
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