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3598 Uppsatser om Fuel quality - Sida 18 av 240
Reglerstrategi för fria ventiler : ? Utveckling av en fyrtakts förbränningsmodell för att prediktera optimala ventilinställningar
As emission legislations across the world continuously pushes engine development forward,engineers constantly need to come up with and implement fuel saving technologies. During thelast decade, variable cam phasing has become a popular solution to increase gas exchangeefficiency. This configuration is typically mechanically constrained by camshaft limitations, anda solution to circumvent this problem would be to use a different valve actuation principle.One example of this is to use pressurized air controlled by electrical solenoids. Such a systemhas been developed byCargine Engineering and this provides the starting point for this work. Tobe able to operate the valvetrain on an actual engine, a control system is needed.
Kvalitetssäkringsproblematik i den privatiserade svenska familjerådgivningen
The purpose of this article is to examine issues concerning quality assurance in the Swedish family counselling. To obtain the purpose following factors have been analysed: what kind of requirements/criteria are put on the companies/practitioners, what the respondents think about the lack of common standards and criteria and their opinions concerning ?Lagen om valfrihetssystemet?. Monitoring of criteria, privatisation and increased competition are other factors that have been analyzed. The material was obtained from the family counsellors own association and was analyzed in the light of previous research and theories regarding the quality of family counselling however we also considered theories about quality within social work in general.
Livskvalitet 2-7 år efter allogen stamcellstransplantation
This is an empirical cross-sectional study with the aim to examine the patient?s comprehension about their quality of life within two to seven years after their stem-cell transplantation with reference to physical, social, emotional, psychological and functional wellbeing and to investigate if the patient groups have disease specific problems. Differences in quality of life between men and women and also between allogeneic and stem cell transplantation with an unrelated donor (URD) were studied. The measurement Functional Assessment of Cancer Therapy (FACT) and the bone marrow transplant subscale (BMT) is a 49 item, valid and reliable measure that was used. The questionnaire was answered by 43 of 47 patients (91%).There is a significant difference between men and women in physical, social and functional wellbeing.
Optisk undersökning av dieselsprayer från en höghastighetsroterande insprutare
There have been changes in Earth?s climate system on both global and regional scale since the pre-industrial era and some of these changes are due to human activities such as the combustion of fossil fuels. This calls for the development of engines with a higher efficiency and less harmful emissions. One interesting concept is the Homogeneous Charge Compression Ignition (HCCI) engine, which has the advantages of potentially low emissions combined with high efficiency. However, HCCI with diesel fuel requires a relatively long fuel/air mixing time to ensure a "homogenous" charge.
Kvalitetskontroll av servicedatabasen Sisyla
Sisyla is a joint project between the counties of Skåne, Blekinge, Jönköping, Kronobergand Kalmar in Sweden. A geographic database has been built with the aim to study theservice situation of the area. The main purpose of this thesis is to find a method toinvestigate the quality of the Sisyla database and to apply it. The method is adjusted tothe standard ISO 19114. The agreement between the database and reality was studied ina test sample.
Relationskomponenternas betydelse i en upphandlingprocess mellan konsult och kund :
This paper investigates a number of components that influence the relationship between consultant and client in a procurement process of ERP. The paper deals with Trust, Commitment, Cooperation and Satisfaction. The problem lies within the fact that consultants do not know how and to what extent the components affect relationship quality. Based on the theories in the areas of procurement, relationship marketing and relationship quality, information has been gathered about how the various authors believe a procurement process works, how they view relationship marketing and how relationship quality is created. The components discussed are trust, commitment, cooperation and satisfaction.
Optimering av driftläggningar i Fortums nät
Future emission legislation puts great emphasis on increasing the efficiency of the engine, thereby reducing fuel consumption. The tribological contact between cylinder liner and piston ring is where an great amount of energy is lost due to friction, and by reducing these losses an reduction in fuel consumption can be achieved.The aim of this thesis was to evaluate the tested piston ring coatings against a plasma sprayed cylinder liner and rank these combinations of materials for friction and wear resistance. The coatings that were tested was Cr + Al2O3, (Al,Cr)N, two types of CrN and WC / C.The experimental tests were performed with a so-called pin-plate, where used oil with addition of an acidic mixture of sulfuric and nitric acid to mimic the acidic condensate formed when exhausts recirculate, were added with a continuous flow. The results were then analyzed by weighing, studies by optical microscopy and scanning electron microscopy (SEM) and profile measurements.The results from each material combination were that the plasma coated cylinder liner wears too aggressively in order to yield a ranking of the piston ring coatings based on the parameters of friction and wear resistance. It is therefore proposed that an alternative coating on the cylinder liner should be developed, lacking the large abrasive wear on piston rings and that can withstand the corrosive environment resulting in engines equipped with EGR.
Eutanasi / Dödshjälp : en litteraturstudie ur patientens synvinkel
Background: Euthanasia means help to die. Some terminally ill patients wish for euthanasia. Purpose: Illuminating terminally ill patients' desire for voluntary euthanasia. Method: A general literature study. Seven articles were reviewed and analyzed.
Inventering och karakterisering av brännbart avfall i
Norrköpingsregionen
The purpose of this study has been to make an inventory of combustible waste in the region around Norrköping and to investigate the composition of domestic waste, industrial waste and two different types of sludge. The work was performed at the request of Norrköping Miljö & Energi, due to the planning of an incineration plant. The inventory of the waste was performed through inspection of environmental impact reports, from waste disposal plants in a number of local government areas in the region. The quantities were also compared to another inventory, carried out in a different way. The characterisation of the wastes was compared to the fuel specification determined by Norrköping Miljö & Energi.
Energieffektivisering av ventilationssystemet i konsthallen Sandgrund Lars Lerin
Uppsala County has ambitious environmental aims for the planned residential area inÖstra Sala backe. In this thesis different energy sources have been evaluated todetermine which system that would be most favorable given currently availableinformation about the project. Planned energy usage has been divided into tap waterheating, space heating and power. Three base case scenarios were made with districtheating, small scale bio fuel and heat pump. Solar power and solar heating were thensimulated and the production from the two could individually be deducted from theenergy need in the base cases, constituting 9 different scenarios.
To derive quality from quantity
The purpose of this master thesis is to present a model that illuminates the important factors when deriving technical information from market data within a company. For companies to be able to become and stay competitive in the market, product quality is an important factor. Whilst good product quality leads to customer satisfaction and loyalty, lack of quality brings costs in service and replacements. To improve product quality, the developers need information and knowledge about what quality issues affect existing products. Most companies gather data from market about known issues, but in order eliminate known quality issues in new products; this data has to be transformed into information and knowledge.
Rollen som intern kvalitetsrevisor för ISO 9001. : Hur synen och förväntningarna på internrevisionsrollen påverkar kvaliteten på interna revisioner.
AbstractThe control of quality standard ISO 9001 has made the internal audit to be experienced as police authority and paragraph control. Because of that, motivation for internal auditors is low. To counteract the experience, there is a possibility to integrate internal audit with improvements in company?s processes. Theory has shown that a qualified and competent auditor can provide information that can help the organization's managements to make the right decisions that will improve product quality and result in new customer contracts.An opportunity to observe an internal and external audit at one of the case companies gave rise to this study.
Informationsflödets roll i avverkningskvaliten
The information flow is a very important process in an organization. It affects in a decisive manner the effectiveness of a task. It also has a major impact on the quality of the product or service for which the organization delivers to its customers. Lack of information may cause that important aspects are not given the required attention or even forgotten and can in turn lead to criticism from certification officials and lower customer satisfaction. The purpose of this study was to study how the information flow in Norrskog?s field organization is handled and how this affected the quality of the work performed and the feedback given to the contractors, The study is based on qualitative interviews with contractors, production inspectors and forest inspectors on all Norrskogs districts.
Kvalitet ... vad är det? : om staten och landstingets definition och användande av begreppet kvalitet i bidragsgivningsprocessen.
The concept of quality is difficult to identify clearly. Many attempts to define quality havebeen made, but the resulting definition remains vague.The quality concept (in the artistic sense) has since 1974 played a leading role in Swedishcultural policy. In the spring of 2009, a publication, named ?Kulturutredningen? waspublished. This report suggested a number of changes for the Swedish cultural policy.
Användarcentrerad design för att förbättra rapporter i kvalitetsregister
In modern health care, the quality registry is anexcellent tool to monitor everyday work. Collected data forms a foundation, presented as online reports, from which local work efforts to refine care quality can be performed. All reports are coded manually by specially trained developers. This is a tedious process and hence becomes a bottleneck in the strive for improvement.This thesis evaluates whether an extended way of dealing with reports can fit into the existing work situation, with main focus on the idea of creating custom reports directly within a quality registry. It provides a set of conclusions regarding today's usage of reports as well as the users' general and specific needs within the area.