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.

Syfte: Syftet med denna studie är att skapa förståelse för hur ledningen i tjänsteföretag praktiskt arbetar med att internt kommunicera företagets kärnvärden, vision och företagskultur med hela organisationen.Metod: Empirisk data har samlats in genom intervjuer och studien omfattas därför av kvalitativ ansats. Semistrukturerade intervjuer har genomförts med respondenter på fyra olika fastighetsmäklarföretag. Datainsamlingen har sedan analyserats genom en abduktiv analysmetod med inspiration från A well grounded theory.Resultat & slutsats: Resultaten i denna studie visar att det främst handlar om att få alla i organisationen att leva företagets identitet i vardagen. För att lyckas med det använder sig företagen av olika kommunikationskanaler, utbildningar och inspiration, så som föreläsningar och tävlingar. Viktigt är också att ledningen uppträder föredömligt och att budskapen i varumärket genomsyras i alla företagets aktiviteter.Förslag till fortsatt forskning: Vi föreslår att framtida studier kan riktas mot tjänsteföretags uppföljning av dess interna varumärkesarbete.

This report relate a concept study that consider a number of different proposals to improve the overcharging system in BAE Systems Ha?gglunds tracked vehicle series BvS10, to maintain sealevel power at extreme altitude.At high altitude the power losses beacuase of the air density that decreases, which results in less fuel can be burned. The decreasing of air density also gives rise to fatigue failure of the turbocharger unless power is reduced.The proposals shall be as required by BAE Systems Ha?gglunds economically sustainable and defensible from a packing perspective. That means the selected solution must have a reasonable price tag and at the same time a minimal impact on adjacent components.The basis for this thesis is based on benchmarking of both the auto industry as the flight industry, to find inspiration and tips for improvement.Some of the concepts have after gathering facts and calculations been excluded while other solutions has been considered as workable and thus interesting for BAE Systems Ha?gglunds.Initially the current turbochargingsystem was analyzed in order to determine the starting point and thus be able to fix the current problems surrounding high altitude driving.

This thesis aims to discuss how an information system and its users may adapt to each other. The main discussion is how to create an information system that is adaptable without losing its organising properties. The thesis uses a holistic approach to the topic and the areas being dealt with are information architecture, interactive information retrieval and information searching. The practical work consisted of constructing a database for Autoliv?s Research and Development branch.

Simulation is a vital tool during development of JAS 39 Gripen, since money and time can be saved.The Auxiliary and Emergency Power System, AEPS, is a subsystem of the secondary power system in Gripen. It has the function of providing the aircraft with electrical and hydraulical power before activation and after deactivation of the main engine. The system also functions as backup in case of a safety critical problem in the main power supply system. The system basically consists of a control unit and an auxiliary gearbox. The gearbox is driven by an air turbine.

Title:Pecking-order i små tillverkande företag Level of thesis:Master´s dissertation in banking and auditing Authors:Mathias Klasén and Maria Waderoth Advisor:Joakim Winborg Background:The area of business financing has been well studied during the 1900´s. Many studies and theories are made with big corporations in mind, and the importance of small businesses wasn?t enlightened until the end of the 1900´s. Business financing has created a number of theories, among them Myers pecking-order theory. This theory implies that business managers prefer internal equity in front of debt and external equity.

This report analyzes and examines a hypothesis for finding a method to optimize thelength of the delubrication process time based on a total charge weight. The work hasfocused on the holding time for delubrication and the total charge weight.An important step in the manufacturing chain of cutting tools is when the greenbodies undergo the sintering process. Today, the delubrication step has the sameprocess time independent of the total charge weight. An implementation of a methodto adjust the delubrication process time would give more consistent quality of thecutting tool´s internal characteristics but also reduce the time course of the sinteringprocess. In the present project two methods for this goal were tested, thedevelopment of an algorithm and a weight interval subdivision with associateddelubrication process times.During delubrication a pressure increase is observed due to the decomposition of thePEG in the powder mixture.

Within today?s organizations there is continual development work to increase efficiency and the power to compete at the market. Production development with focus on continual improvements constitutes an important part of the daily work within a lot of organizations today.The purpose of this study is to contribute to a part of the development process that Volvo Penta factory in Vara has in mind. A description of the current situation was compiled by mapping the internal runnings and material flow throughout the factory. A new suggestion for a layout and a comparison with the current situation will assist with creating a factual basis for the development of a new goods reception.A study was made where the volumes and the quantity of the daily arrival goods were settled.

In published studies it is found that the fuel consumption on a forwarder is relatively constant, on time basis. A certain variation between different sizes of forwarders occurs as well as between different working elements. The aim of the study was to establish a forwarders comparatively fuel consumption when driving on road and in the terrain, loaded and unloaded, with high and low gear and with high and low speed as well as with hydrostatic and hydrodynamic transmission. A hypothesis was that low rpm gives lower fuel consumption on distance basic, at all trials. The test driving was made with a Hemek 750 which is a three geared hydrostatic machine and with a Hemek 700 which is a hydrodynamic machine with six gears.

The aim of this thesis is that through a case study, analyze and evaluate whether the customer is high - or low involved and connect with the choice of marketing strategy using a celebrity.This thesis is about how a celebrity can be used in marketing to affect a company's customers. The essay is facing the fashion retail industry, where three companies, Lindex, H&M and MQ, has been studied and compared. Lindex is using celebritiy Emma Wiklund by an internal collaboration within the enterprise. MQ is using various celebrities in various campaigns throughout the year and use them in external advertising campaigns. H&M is using interactive marketing with different celebrities in the form of, for example, guest collections for the company.

It is important that companies knows how to handle a complaint when they receive one from a customer. This information could the company take care of and use when they develop new services. Furthermore a good complain handling leads to satisfied and loyal customers which increases the revenue for the company. We have examined how SAS handle their internal information process and if this process affects the information and in that case how. The study is performed with a qualitative method, based on deep interviews.

AbstractOur purpose for making this study is to study the implementation, the use of and the effects of Lean within our case objects.  We chose to make this thesis by case studies. The three themes mentioned above is also the main research questions that we aim to find an answer to by this study. We have chosen to do a cross section analysis where we conducted structured interviews to find answers to these questions. The theoretical reference frame consists partly of traditional theoreticians within Lean but also more recent research within the subject as well as theory specifically for Lean within the Health Care sector.The result of this study shows in all our case studies that the Management has been supporting the implementation, but that the implementation process proceeds faster if also the professionals are involved in the process.  To succeed with the implementation there is a great need for good reasons and strives that can benefit the professionals. By the use of Lean our case studies have evaluated its processes, with the main intentions being to reduce waste activities and to create flows with ?pull systems?.

The purpose of this study is to investigate the managers? perspective on leadership in relation to the motivation of the employees by an example of a manning and recruitment agencies. This is implemented by framing of two questions; What kind of leadership can be identified by middle managers to motivate their employees? Which motivation factors are relevant to employees based on the perspective of the managers? To answer the question and identify leadership strategies and motivational factors and the relationship in between, we have conducted eight interviews with persons who hold a middle management position. Through a qualitative investigation we have been able to go into depth and had access to these managers reflections, thoughts and experiences.

This master deals with the theme youth and public libraries. The essay is based on observationsand qualitative interviews with young people at the ages of 13 to 16 years old, whovisited the public library of Skara, employees at the library, and politicians in the community.The main issue in the study is; what is and what can be done to increase youth utilization ofpublic libraries. I have emphasized on the media stock, the organization of books, theenvironment and the staff of the library, marketing, specific target group, activities, andcooperation with both internal and external forces.Theories about youth culture and some projects concerning young peoples behaviour in librariesare also presented..

Biogas mainly consists of methane and carbon dioxide, where methane is theenergy-rich gas, and is naturally created when organic matter breaks down in absenceof oxygen, also known as anaerobic digestion. A biogas plant re-creates the anaerobicconditions inside a digester where the organic substrate is fed into and digests toproduce biogas. The gas is then used to produce energy by combustion and can beseen as a completely renewable fuel.Today, energy from biogas is used primarily by major stakeholders such asmunicipalities and thus the plants become very large with high investment- andconstruction costs. There are currently few small plants in Sweden, even though thepotential for agriculture and medium-sized to smaller farms to become self-sufficientin terms of electricity and heat is great. Farms have a natural stock of digestibleorganic material in form of manure or crops for example, which are constantlyavailable.