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Dissertations / Theses on the topic 'AdBlue'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Kozelský, Aleš. "Realizace montážní linky ventilů AdBlue." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229424.

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This diploma thesis concerns in design and realization of assembling line of a 2/2 seat valve for commercial vehicles sector. Design is using Autodesk Inventor. Thesis describes phases and goals of project management – in this case management of technological/manufacturing transfer.

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2

Tvinne, Flyg Evelina. "Identifying risks of AdBlue spray on stainless steel surfaces." Thesis, KTH, Kemiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297646.

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Utsläppskontroll, reglerad av allt strängare lagstiftning, ställer höga krav på utvecklingen av noggranna efterbehandlingssystem för avgaser. När det gäller utsläpp från dieselmotorer utgör NOx-minskning en av de största utmaningarna. För tunga fordon tacklas denna utmaning ofta genom ett SCR-system. SCR-systemet kan omvandla upp till 95% av NOx-utsläppen till kväve och syre, genom utnyttjande av ett selektivt reduktionsmedel över en katalysatoryta. Ammoniak är ett sådant reduktionsmedel men är inte i sig ett lämpligt val för mobila tillämpningar på grund av de miljö-, hälso- och säkerhetsprob

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3

Klinga, Emil. "Modeling of the Melting Process in an AdBlue Tank." Thesis, Linköpings universitet, Fordonssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-122298.

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This master thesis is covering the modeling of the melting process in a tank filled with AdBlue. Due to AdBlue freezing at temperatures below -11 degree there is a need to add heat to be able to secure dosing in all situations. A rig for simulating freezing conditions is created with the possibility to store AdBlue in temperatures down to -40 degree. Temperatures are measured in and around the tank containing AdBlue and in the equipment used for adding heat. Two models are created from physical relations to estimate the mass of AdBlue melted, a static temperature model and a dynamic temperatur

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4

Berggren, Kajsa, and Mikael Johansson. "Concept evaluation of a technical solution for storing AdBlue/DEF in cold climate areas without external electricity." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-15129.

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5

Antoniotti, Mattia. "Optimization of the AdBlue e vaporation module for Scania V8 engines." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209417.

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The aftertreatment techniques introduced to follow the emission legislations require a constant improvement process to comply with the gradually more stringent demands. SCR is the system used nowadays to deal with NOx emissions in most heavy-duty vehicles. An aqueous-urea solution, AdBlue, is sprayed into the evaporation unit, where urea should decompose to ammonia, the reducing agent. This is a critical step because the NH3 amount available heavily affects the final nitrous oxides reduction to nitrogen. Moreover the urea decomposition’s sides reactions are likely to occur, forming deposits th

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Grimler, Henrik. "Investigating Urea Vaporization in a Controlled Environment Using Infrared Thermography." Thesis, KTH, Skolan för kemivetenskap (CHE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174360.

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As the emission legislation becomes more stringent, higher demands are put on the aftertreatment system in trucks. For dealing with nitrous oxides, AdBlue® (urea–water solution) is injected into the exhausts which evaporates and reduces nitrous oxides to nitrogen. At low exhaust temperatures, it is more difficult to evaporate the injected AdBlue® as the exhausts contain less energy. The injected solution may instead form a wall film. In this wall film, side reactions can occur which leads to the formation of deposits. This thesis aims at understanding how and when wall films and deposits are f

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Faramarzi, Simin. "Effect of Alternative Fuels on SCR Chemistry." Thesis, KTH, Skolan för kemivetenskap (CHE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146185.

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In the time line of world industrial age, the most important era begins in the late 18th century when the use of fossil fuels was growing intensively. This approach has continued and developed up to the 20th century. Besides, this trend has had side effects like polluting environment. Air pollution is one of the critical issues nowadays that stems from using hydrocarbon fuels. One type of the problematic compounds in polluting air is nitrogen oxides that can be produced in combustion process from engines and industrial plants. Different solutions have been suggested to remove air polluting com

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8

Gazzotti, Andrea. "Valutazione sperimentale degli effetti della pressione d'iniezione dell'AdBlue sull'efficienza di abbattimento degli NOx nei sistemi SCR." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

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In questo lavoro vengono indagati i benefici dell’aumento della pressione d’iniezione dell’AdBlue nei sistemi SCR. Dopo aver esposto le ipotesi teoriche a supporto della tesi, si passa all’allestimento del veicolo dimostrativo impiegato per l’attività sperimentale. In questa fase viene illustrato tutto il processo di preparazione, che comprende: la messa a punto del circuito idraulico, la caratterizzazione degli iniettori impiegati, la strumentazione della linea di scarico, e il software INCA impiegato per il comando delle centraline. Dopodiché vengono descritti nel dettaglio i test, condotti

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9

Friedl, Michal. "Bosch DNOX 5.x - optimalizace zkoušek." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231938.

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Táto diplomová práca sa zaoberá optimalizáciou validačných testov pre produkt firmy Robert Bosch určený na úpravu výfukových plynov vznetových motorov, tzv. Denoxtronic 5.x, konkrétne jeho najkomplikovanejšiu časť – Pump Module. Zhrnutím a analyzovaním porúch objavujúcich sa v reálnej prevádzke tak poskytuje spätnú väzbu pre oddelenie vývoja a navrhuje, akým mechanizmom by mali byť v budúcnosti validačné testy optimalizované.

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10

Polnický, Václav. "Studie rozmístění dílů SCR systému na traktoru s pevnostní analýzou vybraných komponentů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231277.

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Diploma thesis deals with the exhaust system able to pass emission restrictions Stage IV. How emissions are produced as well as how could be minimized is described. Analysis of components lay out necessary to AdBlue injection is mentioned. Main part of this paper handle with given design of exhaust system combining diesel particulate filter, as well as filters required to reduce nitrogen oxides. Strength analysis covering vibrations, welds, fatigue and life is concluded. Thesis is made for Zetor Tractors a.s. purposes.

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11

Gustavsson, Victoria. "Utveckling av AdBluetank : Produktutveckling av AdBluetank för Rottne Industris skogsmaskiner." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72837.

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Detta arbete har utförts i Rottne mot Rottne Industri AB under hösten 2018 och är ett examensarbete för programmet högskoleingenjör Teknisk design med inriktning produktdesign, D0023A, vid Luleå tekniska universitet. Rottne Industri AB tillverkar skogsmaskiner i varianterna skördare och skotare. I dag har de två olika storlekar på AdBluetankar. AdBlue är en vätska som tillsätts i avgassystemet för att minska utsläpp av kväveoxider. De har problem med att tankarna ibland spricker och de har spruckit vid infästningen. På grund av detta och att tankarna är gjorda i rostfritt stål som är relativt

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12

Karafa, Pavel. "Systém pro snížení NOx." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318517.

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This diploma thesis deals with the issue of nitrogen oxides emissions in exhaust gases and possibilities of their reduction. The task of the thesis was analysis of systems for NOX reduction by contemporary diesel engines, design and construction of NOX reduction device for given diesel engine, then verify functionality of this system compiled from commercially available components. In the last part of thesis available measurements will be made with an analysis of achieved results.

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13

Trigell, Emelie. "CFD-simulations of urea-waterspray in an after-treatment systemusing Star-CCM+." Thesis, KTH, Mekanik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-250015.

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The legislation has forced the vehicle industry to reduce tail-end emissions. The air pollutant nitrogen oxide (NOX) has been shown to have a negative impact on human health and the environment. One of the key technologies to reduce the levels of NOX emitted from a vehicle is by implementing an after-treatment system. The after-treatment system includes catalysts, a particle filter and an evaporation system. In the evaporation system a liquid jet containing a urea-water solution known as AdBlue is injected into the hot exhaust gases to evaporate into gaseous ammonia NH3 and water H2O. Then NH3

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14

Ottosson, Oscar. "CFD Simulation of Urea Evaporation in STAR-CCM+." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-160484.

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Diesel engines produce large amounts of nitrogen oxides (NOX) while running. Nitrogen oxides are highly toxic and also contribute towards the formation of tropospheric ozone. Increasingly stringent legislation regarding the amount of nitrogen oxides that are allowed to be emitted from diesel-powered vehicles has forced manufacturers of diesel-engines to develop after-treatment systems that reduce the amount of nitrogen oxides in the exhaust. One of the main components in such a system is selective catalytic reduction (SCR), where nitrogen oxides are reduced to diatomic nitrogen and water with

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15

Alsulami, Ghaliah. "An absorbing markov chain analysis of the enrollment of flow processes at the King Adbul Aziz University." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2016. http://digitalcommons.auctr.edu/dissertations/3125.

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The objective of the study is to apply Markov chain analysis to analyze student flow through King Abdul Aziz University (KAU) in Saudi Arabia, and to predict important metrics such as graduation and dropout rates. This objective arises from examination of the policies of KAU University. We begin with background information detailing the subject of study, then move into a general outline of stochastic processes. We then use these methods to construct a specific matrix of transition probabilities with data from the university student population. Finally, we discuss the calculation of the possibi

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16

Hellberg, Emilia. ""Vi fortsätter väl imorgon eller nåt" : En komparativ läsning av lekskildringar i bilderböckerna Vi måste till jobbet (2019) av Pija Lindenbaum och Gropen (2018) av Emma Adbåge." Thesis, Stockholms universitet, Institutionen för kultur och estetik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-184882.

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Children’s play has been a recurring theme throughout the history of picture books for children, perhaps because of its utter relevance in young children’s lives. Pija Lindenbaum and Emma Adbåge are two authors of Swedish contemporary picture books who often explore depictions of play. The aim of this thesis is consequently to study depictions of children’s play in Lindenbaum’s Vi måste till jobbet (2019) and Adbåge’s Gropen (2018), and if the depictions can be interpreted as possibly empowering or subversive for the playing characters. With Play theory as a theoretical ground and useful

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17

Nicholson-Fish, Jessica. "Activity-dependent bulk endocytosis : control by molecules and signalling cascades." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28770.

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Synaptic vesicle (SV) recycling in the presynapse is essential for the maintenance of neurotransmission. During mild stimulation clathrin-mediated endocytosis (CME) dominates, however during intense stimulation activity-dependent bulk endocytosis (ADBE) is the dominant form of membrane retrieval. The aim of this thesis was to determine how the signalling molecule GSK3 controlled ADBE, with the hypothesis that this enzyme was required at multiple stages of this endocytosis mode. I also hoped to identify a specific cargo for ADBE. I found that during intense action potential stimulation, a local

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18

Emilsdóttir, Silja. "Med genusbyxorna neddragna : En receptionsanalys av sex könsöverskridande barnböcker." Thesis, Uppsala universitet, Litteraturvetenskapliga institutionen, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-192343.

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Sammanfattning: Vid min granskning av mottagandet av de sex böcker jag har behandlat i denna uppsats kan man se vissa likheter och skillnader hos recensenter och bloggare. Att gestalta könsöverskridande hos flickor verkar överlag vara lättare än när det gäller pojkar och inte alls lika uppmärksammande. Också könsneutralitet verkar kunna passera som något positivt inom vissa gränser Men det är tydligt att flickpojkarna får mest plats i recensionerna och bloggarna eftersom detta alltid är något som nämns. Detta gäller dock inte Kivi och monsterhund, som ju introducerade ett nytt begrepp inom b

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19

Kokotos, Alexandros Christoforos. "Molecular identity of activity-dependent bulk endocytosis." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/25509.

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At the neuronal synapse, neurotransmitter-filled synaptic vesicles (SVs) fuse with the presynaptic plasma membrane during activity. Following exocytosis, SVs must be retrieved for neurotransmission to be maintained. Several modes of SV recycling have been identified. During mild neuronal activity, clathrin-mediated endocytosis has been regarded as the dominant SV retrieval mode, however the recently identified ultrafast endocytosis mode may also be important in this condition. During elevated activity, activity-dependent bulk endocytosis (ADBE) is the dominant SV retrieval pathway. In ADBE, la

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20

Kvasnica, Roman. "Měření spotřeby AdBlue traktorového motoru." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-169619.

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21

Pinto, Mara Teresa Tabaçó. "Implementação da espetroscopia NIR para o controlo da ureia em solução." Master's thesis, 2019. http://hdl.handle.net/10773/30143.

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A ureia é um componente bastante utilizado na fabricação de produtos para venda na Bresfor, de entre os quais se destacaram as soluções de ureia e o AdBlue. Este trabalho teve como objetivo efetuar testes de calibração e validação de forma a verificar se seria possível a implementação da espetroscopia de infravermelho próximo (NIR) para o controlo da concentração da ureia presente nos produtos da empresa e da densidade dos mesmos. A espetroscopia NIR apresenta diversas vantagens como a rapidez de análise, não haver necessidade de preparação da amostra e não ser uma técnica destrutiva.

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22

Macek, Marek. "Vliv koncentrace močoviny na index lomu kapaliny pro selektivní katalytickou redukci." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-179809.

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This diploma thesis focuses on checking of impact of urea concentration on refractive index of the liquid for selective catalytic reduction. The attention in the introduction part is paid on basic optical terms and laws, particularly on refractive index. Furthermore, the measurement of refraction index is described through particular refractometers and utilization of the refractive index of the liquid in technical practice. In the second part the thesis is focused on problematics of creation of nitrogen oxide emissions, aqueous solution of urea and on description of the construction of the sys

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23

Duarte, Sofia Alexandra Correia. "Caracterização de metais em soluções aquosas, utilizando a técnica de ICP-OES." Master's thesis, 2020. http://hdl.handle.net/10773/30389.

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O AUS 32, Adblue, é um aditivo utilizado em automóveis com o objetivo de reduzir as emissões de óxidos de nitrogénio para a atmosfera. Para garantir que o produto final se encontra de acordo com a norma ISO 22 241, é necessário controlar a presença de metais, nomeadamente o alumínio, o cálcio, o crómio, o ferro, o potássio, o magnésio, o níquel, o cobre, o sódio e o zinco. Este trabalho teve assim como principal objetivo desenvolver e validar o método para a determinação de metais presente em amostras de Adblue através da Espectrofotometria de Emissão Atómica com Plasma Acoplado Indutiv

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24

Karásek, Tomáš. "Vliv provozního režimu traktoru na činnost systému selektivní katalytické redukce." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-362738.

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This thesis called "Influence of an operation mode of a tractor on function of selective catalytic reduction system" describes various operation modes of the tractor, when aqueous solution of urea (AdBlue) was injected into selective catalytic reduction system. The first part jkdeals with particular pollutants in exhaust fumes. Formation of pollutants and their impact on humans and environment is described in this chapter. The second part describes individual technical systems used to lower harmful components, especially selective catalytic reduction system. The last part concentrates on pract

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25

Klug, Christian. "Untersuchungen zu Struktur-Funktionsbeziehungen in der tRNA-ähnlichen Struktur des Rüben-Gelbmosaik-Virus." Doctoral thesis, 2004. http://hdl.handle.net/11858/00-1735-0000-0006-ADBE-4.

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