Kestuskatsestend biokütuse mõju uurimiseks diiseltoiteaparatuuri töödetailidele
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Kuupäev
2016
Kättesaadavus
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Biokütuste mõju survesüütega mootorite kütusesüsteemidele pole suuremas mastaabis veel
uuritud ja on teadmata, missugust mõju töödetailidele avaldab. Katsestendid, mis on
soetatavad, pole mõeldud kestuskatsete läbi viimiseks, sel põhjusel tuli konstrueerida stend
enda poolt. Käesoleva magistritöö eesmärgiks on projekteerida ja koostada
diiseltoiteaparatuuri kestuskatsestend, millega saaks läbi viia kestuskatset ühisanumtüüpi
diiseltoiteaparatuuridele. Katsete läbi viimiseks tuli luua mõõtemetoodika toiteaparatuuri
detailide mõõtmiseks, kasutades toitesüsteemis biokütust. Peale metoodika on
modifitseeritud ja konstrueeritud kestuskatsestend, mille peal katseid teostada.
Katsestendi on juhtima pandud automaatika, mis juhib pihusteid ja kontrollib, ning
reguleerib rõhku süsteemis. Pumba pöörlemissagedust reguleeritakse eraldiseisva
sagedusmuunduriga. Vahemõõtmiste jaoks on planeeritud automaatika, mis on valmimisel,
ent mitte külge veel monteeritud. Praegusel hetkel teostatakse töö manuaalselt.
Lisaks on mõõdetud diiseltoiteaparatuuri oluliste detailide tööpinnad. Katse jaoks olulised
aparatuuri osad on ühisanumpump ja pihustid. Pumba osadest on olulised: plunžrid, plunžri
tõukurhülsid ja nukkvõll. Pihusti detailidest: pihusti nõelad ja tõukurvardad. Defektsed
detailid seadmetes on välja vahetatud, et saavutada normaalsed tööparameetrid.
Impact of biofuel to compression ignition engines and their fuel supply units hasn’t been studied in bigger scale and it is unknown how it influences working details surfaces. Test benches that are sold are not meant to be ran all day long, so it was needed to construct test bench that could satisfy our needs. The aim of this master’s thesis is to design and put together common rail fuel supply apparatus test bench for endurance tests. Also test methodology had to be created, because there are no standards that are made to measure wearing in common rail supply apparatus with pure biofuels. First project of endurance test bench has been remodeled and constructed to conduct test. Also test bench is now controlled by Arduino UNO. It is controlling injectors injection times and fuel pressure in common rail. Electric engine controls common rail pumps rotation speed with converter. Besides building, measurements of the common rail supply apparatus work surfaces have been measured and if needed, details that were worn out have been changed. All this to maintain normal working conditions in supply apparatus.
Impact of biofuel to compression ignition engines and their fuel supply units hasn’t been studied in bigger scale and it is unknown how it influences working details surfaces. Test benches that are sold are not meant to be ran all day long, so it was needed to construct test bench that could satisfy our needs. The aim of this master’s thesis is to design and put together common rail fuel supply apparatus test bench for endurance tests. Also test methodology had to be created, because there are no standards that are made to measure wearing in common rail supply apparatus with pure biofuels. First project of endurance test bench has been remodeled and constructed to conduct test. Also test bench is now controlled by Arduino UNO. It is controlling injectors injection times and fuel pressure in common rail. Electric engine controls common rail pumps rotation speed with converter. Besides building, measurements of the common rail supply apparatus work surfaces have been measured and if needed, details that were worn out have been changed. All this to maintain normal working conditions in supply apparatus.
Kirjeldus
Märksõnad
biokütused, kütusepumbad, diiselmootorid, katsed, magistritööd