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<p dir="ltr">In this thesis, a MATLAB model was used to simulate a 2-vehicle platoon where the lead truck is a conventional class 8 vehicle while the key parameters of the following truck was tested in various road conditions to minimize Inter vehicular Distance (IVD) and maximize fuel savings while ensuring safety</p>

The problem with which this investigation was concerned was that of determining the use of modern automotive tune-up equipment as used by the automotive garages in the Fort Worth area. The data for this study were provided by fifteen garages of the Fort Worth area. Of the Fort Worth garages using electronic equipment to perform a tune-up, few appear to have the adequate equipment and few appear to make more use of the equipment. In addition, a deficiency seems evident in the use of the electronic computer in performing tune-ups.

An experimental study of the effects of turbulent flow regime on the flame structure is conducted by using perforated-plate-stabilized hydrogen-piloted lean premixed methane/air turbulent flames. The underlying non-reacting turbulent flow field was investigated using two-dimensional three-components particle imaging velocimetry (2D3C-PIV) with and without three perforated plates. The non-reacting flow data allowed a separation of the turbulent flow regime into axial velocity dominated and vortex dominated flows. A plate with 62\% blockage ratio was used to represent the stream-dominant flow regime and another with 86\% blockage ratio was used to represent the vortex-dominant flow regime. OH laser-induced fluorescence was used to study the effects of the turbulent flow regime on the mean progress variable, flame brush thickness, flame surface density, and global consumption speed. In comparison with the stream-dominant flow, the vortex-dominant flow makes a wider and shorter flame. Also, the vortex-dominant flow has a thicker horizontal flame brush thickness and a thinner longitudinal flame brush thickness. Especially, the horizontal flame brush thickness for the vortex-dominant flow does not follow the turbulence diffusion theory. Then, the vortex-dominant flow shows a relatively constant flame surface density along the stream-wise direction, while the stream-dominant flow shows a decreasing flame surface density. Lastly, the vortex-dominant turbulent flow improves the consumption speed in comparison to the stream-dominant turbulent flow regime with the same velocity fluctuation level.

<p>Generally, heavier noise control treatments are favored over lighter ones since heavier acoustical materials tend to insulate (block) noise sources more effectively than do lighter materials. In automotive applications, however, heavier materials cannot always be adopted because of concerns over the total weight of the vehicle. Thus, it would be useful to identify lightweight acoustical treatments that can mitigate vehicle interior noise. Automotive sound packages have both absorption and barrier characteristics, and there is inevitably a trade-off between these two. Therefore, it is important to study the exchange between the absorption and transmission of acoustical materials particularly as it pertains to weight. Here, a procedure based on plane wave analysis is described that can be used to identify weight reduction opportunities by adjusting the acoustical properties of a generic sound package, consisting of a fibrous layer and a flexible microperforated panel surface treatment, so that it meets a target sound pressure level in a downstream interior space. It has been found, for the configuration studied here, that there are lightweight sound package configurations that can maintain acoustical performance equivalent to that of heavier noise treatments, and further, it has been found that the lightest treatments tend to favor barrier performance rather than absorption. Further, the impact of acoustical leaks has been considered, and it has been found that even very small leaks can result in a very substantial weight penalty if a specified level of acoustical performance is to be ensured. Further, the impact of changing the underlying panel mass and altering the frequency weighting used in the optimization process has also been considered.</p> <p>The optimizer used in the proposed procedure requires considerable calculation time; hence, the acoustic pressure calculation time needs to be minimized to enhance the efficiency of the solution process. Thus, the transfer matrix method (TMM) for a two-dimensional case was used to calculate the interior acoustic pressure for a simple geometry as a starting point in the process of identifying the minimum-weight sound packages. The TMM is a widely used analytical approach to predicting the sound pressure (and particle velocity) for a system that can be represented as a series of subsystems. Although the TMM can offer fast and simple calculations for the acoustic system, its application is limited to a plane-wave-based model. Thus, the TMM is not the best option for the acoustic pressure prediction in a complex geometry such as a vehicle interior, that involves non-planar wave propagation. Therefore, a hybrid TMM-FEA method is proposed in this research to evaluate the acoustical performance of the sound package in more complex geometries (here, a vehicle-like cavity). So, in this research, the TMM was introduced to obtain the initial solutions that can be used in conjunction with the FEA tool to calculate the sound pressure field in the complex geometry case. The correlation between the results of these two approaches was then analyzed to develop a space-averaged pressure prediction model for various absorptive cases in the interior space. Finally, this SAP prediction model was used to generate an acoustic map that can be used to graphically estimate the SAPs in the complex geometry case.</p> <p>In order to validate the usage of the developed equation for different sets of boundary conditions, several case studies were performed to study the effects of the surface impedance arrangements, geometrical shapes, and, lastly, the presence of extra features in the interior space. Finally, the SAP difference between the area near the driver’s right ear and the total interior cavity was studied to show that the SAP of the total cavity can be adjusted to evaluate the acoustic performance of the sound packages along the lines of conventional industry practice. </p>

Existem muitos estudos e publicações focadas no planejamento e desenvolvimento de novos produtos. Porém, o mesmo não é notado em estudos relativos à implantação destes novos produtos e seus processos na área de manufatura. Para tal, é desenvolvido neste trabalho um modelo de referência consistente para a implantação de novos processos de montagem no setor automotivo. O citado modelo contém a descrição das etapas, as verificações de qualidade, as ações e as necessárias validações do produto produzido no processo de produção em série. O teste da consistência e relevância dessa metodologia ocorre por meio da aplicação do modelo proposto, no desenvolvimento de um processo da montagem de componentes na montagem final. Para a sua avaliação, compararam-se os indicadores de um processo existente em dois momentos: um primeiro, com o processo desenvolvido utilizando-se o método tradicional, e em segundo, com o desenvolvimento e implantação deste mesmo processo, utilizando-se o método proposto de desenvolvimento do processo produtivo, somado a uma avaliação qualitativa do modelo de referência, por meio de uma pesquisa, com especialistas reconhecidos do meio automotivo, validando-se assim o modelo proposto. / Currently, there are many studies and publications focused on the planning and development of new products. However, the same is not noted in studies related to the implementation of these new products and their processes in manufacturing area. For this, a consistent reference model is developed for implementation of new assembly processes in the automotive sector. This model contains a description of steps, quality checks, actions and validations required by the product manufactured in the serial production process. The test of consistency and relevance of this methodology occurs through the application of the proposed model, in the development of a process of component assembly in the final assembly. For its evaluation, the indicators of an existing process were compared in two time points: with the process developed using the traditional method, and secondly, with the development and implementation of this same process, using the proposed development method of the production process. This occurred alongside a qualitative evaluation of the reference model through a survey with recognized experts of the automotive environment, thus validating the proposed model.

Background The OEMs are facing fundamental changes. The importance of the quality of products in the automotive industry has changed to being exclusively dependent on the demand and sense of the customer. The OEMs have to react quickly on trends to fulfill the customer demands and be technically innovative. These innovations and intensity of their implication lead to a high cost pressure for the OEMs again. Therefore, the OEMs need to work together with their suppliers. Production strategies like TQM or outsourcing are known as the key to success. Although cost and quality management themselves are quite well-investigated in literature, and the use of both TQM and outsourcing are widely implemented in the OEMs’ strategies to improve quality and reduce costs, studies about the combination of TQM and outsourcing and their impact on quality and costs cannot be found. The wide spread opinion of managers is that quality and costs cannot support each other. Purpose In our Master Thesis we wanted to find out how quality and costs are related to each other to fulfill the given goals. The purpose was to examine the impact of the two common methods, TQM and outsourcing, on costs and quality for the OEMs. We explored how the concepts interact and support costs and quality. Furthermore, the analysis states how these approaches are related within a supply chain and how automobile manufacturers can use both approaches to assure low costs and high quality at the same time. Method Our Master Thesis is a theoretical study based on a qualitative research method. We used scientific articles and literature for the theory and combined these in the analysis with the data and results from previous case studies as the empiric value. We combined this through the deductive approach. We not only used a positivistic view, but we also used a hermeneutic view due to the fact that analysis and conclusion incorporate both scientific articles and also personal interpretations. Results and Conclusion We concluded that precisely these two methods, outsourcing and TQM, supplement each other and fit together very well to assure the efficiency of the automobile OEMs with high quality and low costs at the same time. This is due to the fact that outsourcing is often used in companies and reduces the costs of OEMs; and TQM alone leads to quality improvements. Not only do they work well separately in companies, but outsourcing lays ideal foundations for an efficient TQM implementation. Suggestions on Continued Research We could not find any studies where these two approaches were researched in combination. Thus, one good future research could be to go on with empirical analyses about this theme in the automotive industry, for example by conducting surveys or interviews with OEMs. A case study about the combination of TQM and outsourcing could verify our mostly from the theory concluded results of the interrelation. A further deviation on the research could be that suppliers, instead of OEMs, could be the focus of the study.

<p>Background</p><p>The OEMs are facing fundamental changes. The importance of the quality of products in the automotive industry has changed to being exclusively dependent on the demand and sense of the customer. The OEMs have to react quickly on trends to fulfill the customer demands and be technically innovative. These innovations and intensity of their implication lead to a high cost pressure for the OEMs again. Therefore, the OEMs need to work together with their suppliers. Production strategies like TQM or outsourcing are known as the key to success. Although cost and quality management themselves are quite well-investigated in literature, and the use of both TQM and outsourcing are widely implemented in the OEMs’ strategies to improve quality and reduce costs, studies about the combination of TQM and outsourcing and their impact on quality and costs cannot be found. The wide spread opinion of managers is that quality and costs cannot support each other.</p><p>Purpose</p><p>In our Master Thesis we wanted to find out how quality and costs are related to each other to fulfill the given goals. The purpose was to examine the impact of the two common methods, TQM and outsourcing, on costs and quality for the OEMs. We explored how the concepts interact and support costs and quality. Furthermore, the analysis states how these approaches are related within a supply chain and how automobile manufacturers can use both approaches to assure low costs and high quality at the same time.</p><p>Method</p><p>Our Master Thesis is a theoretical study based on a qualitative research method. We used scientific articles and literature for the theory and combined these in the analysis with the data and results from previous case studies as the empiric value. We combined this through the deductive approach. We not only used a positivistic view, but we also used a hermeneutic view due to the fact that analysis and conclusion incorporate both scientific articles and also personal interpretations.</p><p>Results and Conclusion</p><p>We concluded that precisely these two methods, outsourcing and TQM, supplement each other and fit together very well to assure the efficiency of the automobile OEMs with high quality and low costs at the same time. This is due to the fact that outsourcing is often used in companies and reduces the costs of OEMs; and TQM alone leads to quality improvements. Not only do they work well separately in companies, but outsourcing lays ideal foundations for an efficient TQM implementation.</p><p>Suggestions on Continued Research</p><p>We could not find any studies where these two approaches were researched in combination. Thus, one good future research could be to go on with empirical analyses about this theme in the automotive industry, for example by conducting surveys or interviews with OEMs. A case study about the combination of TQM and outsourcing could verify our mostly from the theory concluded results of the interrelation. A further deviation on the research could be that suppliers, instead of OEMs, could be the focus of the study.</p>

物聯網 (IoT): 將為汽車產業打造一個全新的商業模式 / We are living in an era of the “Internet of Things” as we are more than ever connected to the Internet with our smartphones, tablets, PCs, and etc. With technological advancement in terms of increased broadband coverage and changes in customer behavior, more and more “things” will be connected in retail, infrastructure, home and office buildings, and etc. The communication of devices opens up new business opportunities with increased involvement of services including IT, financial, data analytics, media, and etc. Smart mobility is on the rise, specifically with the Connected Car. Vehicle owners and potential consumers are interested in having connectivity inside a car in addition to services that give them access to applications for information, content and entertainment. With many benefits and opportunities in the Automotive IoT field, stakeholders within the IoT ecosystem including service providers, software developers, automakers, hardware manufacturers, and etc. can reap a great deal of revenue through unique business models that require strategic partnerships, technological innovation and value-added services to deliver to the customer.

Cette thèse traite de la notion de compétitivité des unités industrielles par l’indicateur de l’efficience obtenu avec la méthode DEA. L’efficience des alumineries de l’industrie de l’aluminium primaire est analysée sur quatre années distinctes 2005, 2009, 2010 et 2012. Les résultats révèlent que ces unités sont globalement peu efficientes techniquement (inefficience de l’ordre de 1 à 5% selon la technologie utilisée et la région) ; leurs combinaisons productives semblent donc peu optimales. De plus, l’inefficience est davantage prononcée au niveau du coût et de l’allocation de leurs ressources en considérant les prix des inputs différents ou identiques d’une aluminerie à une autre. Tout ceci pourrait expliquer les fermetures enregistrées ces dernières années. Par ailleurs, nous avons montré que l’inefficience technique était expliquée par l’impact des variables explicatives âge, taille et le taux de change. Au travers d’un modèle VECM linéaire nous avons montré qu’il existe une relation de long terme entre la performance financière des grands constructeurs automobiles et le prix de l’aluminium allié. Ce résultat étant l’indicatif de l’interdépendance entre ces deux industries. / This thesis deals with the concept of competitiveness of industrial units by the efficiency indicator obtained by DEA approach. We use a cross section data over four different years around 2009. The results show that these units are generally technically inefficient (inefficiency of the order of 1 to 5% by technology and region); their productive combination thus seems less than optimal. In addition, the inefficiency is more pronounced in the cost and allocation of resources by considering the inputs prices of an aluminum smelter in another. All this may explain the closures of recent years. We analyze the assessment of how external factors such as exchange rate, vintage and scale affect the smelters efficiency. Through a linear VECM model we have shown a long-term relationship between the financial performance of major car manufacturers and the price of aluminum alloy. This result is indicative of the interdependence between the two industries.