Engine powered by liquid hydrogen

Wide Range of Flammability:In comparing with all other fuels, Hydrogen has a really broad scope of flammability. Hence, Hydrogen can be combusted in an internal burning engine over a broad scope of fuel-air mixtures. One of the important advantages of this is that Hydrogen fuel can run a really thin mixture. A thin mixture is one in which the sum of fuel is less than the theoretical, stoichiometric or chemically ideal sum needed for burning with a given sum of air. This is why it is reasonably easy to acquire an engine to get down on H. In general, fuel economic system is greater and the burning reaction is more complete when a vehicle is run on a thin mixture. Besides, the concluding burning temperature is lower hence cut downing the sum of pollutants, such as N oxides, emitted in the fumes. However, there is a bound to how thin the engine can be run, as thin operation can significantly cut down the power end product due to a decrease in the volumetric heating value of the air/fuel mixtureLow Ignition Energy:Ignition energy is the energy needed to light a fuel. Hydrogen has really low ignition energy. The sum of energy needed to light H is about one order of magnitude less than that required for gasolene. The feature of low Ignition energy enables hydrogen engines to light thin mixtures and besides ensures prompt ignition. Unfortunately, the low ignition energy besides carries the hazard that hot gases and hot musca volitanss on the cylinder can function as beginnings of ignition and hence making jobs such as premature ignition and flashback. Preventing the above mentioned jobs is one of the jobs associated with runing an engine on H. The broad flammability scope of H agencies that about any mixture can be ignited by a hot topographic point.Small Quenching Distance:Hydrogen has a little extinction distance, even smaller than that of gasolene. Hence, it ‘s more hard to slake a H fire than a gasolene fire. The inclination for blowback additions as a consequence of smaller extinction distance, since the fire from a hydrogen-air mixture more readily passes a about closed consumption valve, than a hydrocarbon-air fire.High Auto-Ignition Temperature:Hydrogen has a comparatively high auto-ignition temperature. This characteristic is of import because the hydrogen-air mixture has to be compressed and the refore plays an of import function in finding the compaction ratio that an engine can utilize, since the temperature rise during compaction is related to the compaction ratio. The temperature should non transcend the auto-ignition temperature, as this would do a premature ignition. Hence, the absolute concluding temperature controls the compaction ratio. The high car ignition temperature of H allows larger compaction ratios to be used in a H engine than in a hydrocarbon engine. On the other manus, H is hard to light in a compaction ignition or Diesel constellation, because the temperatures needed for those types of ignition are comparatively high.High Flame SpeedHydrogen has high fire velocity at stoichiometric ratios. Under these conditions, the H fire velocity is about an order of magnitude higher ( faster ) than that of gasolene. This means that H engines can more closely approach the thermodynamically ideal engine rhythm. At leaner mixtures, nevertheless, the fire speed decreases significantly.High DiffusivityHydrogen has really high diffusivity. This ability to scatter in air is well greater than gasolene and is advantageous for two chief grounds. Fir st, it facilitates the formation of a unvarying mixture of fuel and air. Second, if a H leak develops, the H disperses quickly. Therefore, insecure conditions can either be avoided or minimized.Low DensityHydrogen has really low denseness. This consequences in two jobs when used in an internal burning engine. First, a really big volume is necessary to hive away adequate H to give a vehicle an equal drive scope. Second, the energy denseness of a hydrogen-air mixture, and therefore the power end product, is reduced.Fuel Delivery SystemsHydrogen fuel bringing system can be broken down into three chief types:Cardinal injection ( or â€Å"carburetted† )Port injectionDirect injectionCentral and port fuel bringing systems injection forms the fuel-air mixture during the intake shot. In the instance of cardinal injection or a carburetor, the injection is at the recess of the air intake manifold. In the instance of port injection, it is injected at the recess port. Direct cylinder inje ction is more technologically sophisticated and involves organizing the fuel-air mixture inside the burning cylinder after the air consumption valve has closed.Cardinal Injection or Carburetted Systems:The simplest method of presenting fuel to a H engine is by manner of a carburetor or cardinal injection system. This system has advantages for a H engine. First, cardinal injection does non necessitate the H supply force per unit area to be every bit high as for other methods. Second, cardinal injection or carburetors are used on gasolene engines, doing it easy to change over a standard gasolene engine to hydrogen or a gasoline/hydrogen engine. The disadvantage of cardinal injection is that it is more susceptible to irregular burning due to pre-ignition and back fire. The greater sum of hydrogen/air mixture within the consumption manifold compounds the effects of pre-ignition.Port Injection SystemsThe port injection fuel bringing system injects fuel straight into the consumption manifold at each consumption port, instead than pulling fuel in at a cardinal point. Typically, the H is injected into the manifold after the beginning of the consumption shot. At this point conditions are much less terrible and the chance for premature ignition is reduced. In port injection, the air is injected individually at the beginning of the consumption shot to thin the hot residuary gases and cool any hot musca volitanss. Since less gas ( H or air ) is in the manifold at any one clip, any pre-ignition is less terrible. The recess supply force per unit area for port injection tends to be higher than for carburetted or cardinal injection syste ms, but less than for direct injection systems. The changeless volume injection ( CVI ) system uses a mechanical cam-operated device to clip the injection of the H to each cylinder. The CVI block is shown on the far right of the exposure with four fuel lines go outing on left side of the block ( one fuel line for each cylinder ) . The electronic fuel injection ( EFI ) system meters the H to each cylinder. This system uses single electronic fuel injectors ( solenoid valves ) for each cylinder and pumped to a common fuel rail located down the Centre of the consumption manifold. Whereas the CVI system uses changeless injection timing and variable fuel rail force per unit area, the EFI system uses variable injection timing and changeless fuel rail force per unit area.Direct Injection SystemsMore sophisticated H engines use direct injection into the burning cylinder during the compaction shot. In direct injection, the consumption valve is closed when the fuel is injected, wholly avoiding premature ignition during the intake shot. Consequently the engine can non backlash into the consumption manifold. The power end product of a direct injected H engine is 20 % more than for a gasolene engine and 42 % more than a H engine utilizing a carburetor. While direct injection solves the job of pre-ignition in the consumption manifold, it does non needfully forestall pre ignition within the burning chamber. In add-on, due to the reduced commixture clip of the air and fuel in a direct injection engine, the air/fuel mixture can be non-homogenous. Surveies have suggested this can take to higher NOx emanations than the non-direct injection systems. Direct injection systems require a higher fuel rail force per unit area than the other.Thermal DilutionPre-ignition conditions can be curbed utilizing thermic dilution techniques such as fumes gas recirculation ( EGR ) or H2O injection. As the name implies, an EGR system re-circulates a part of the fumes gases back into the consumption manifold. The debut of exhaust gases helps to cut down the temperature of hot musca volitanss, cut downing the possibility of pre-ignition. Additionally, re-circulating fumes gases cut down the peak burning temperature, which reduces NOx emanations. Typically a 25 to 30 % recirculation of fumes gas is effectual in extinguishing blo wback. On the other manus, the power end product of the engine is reduced when utilizing EGR. The presence of exhaust gases reduces the sum of fuel mixture that can be drawn into the burning chamber. Another technique for thermally thining the fuel mixture is the injection of H2O. Injecting H2O into the H watercourse prior to blending with air has produced better consequences than shooting it into the hydrogen-air mixture within the consumption manifold. A possible job with this type of system is that H2O can acquire assorted with the oil, so care must be taken to guarantee that seals do non leak.Engine DesignThe most effectual agencies of commanding pre-ignition and knock is to re-design the engine for H usage, specifically the burning chamber and the chilling system. A discoid burning chamber ( with a level Piston and chamber ceiling ) can be used to cut down turbulency within the chamber. The disc form helps bring forth low radial and digressive speed constituents and does non magnify recess whirl during compaction. Since unburned hydrocarbons are non a concern in H engines, a big bore-to-stroke ratio can be used with this engine. To suit the wider scope of fire velocities tha t occur over a greater scope of equality ratios, two flicker stoppers are needed. The chilling system must be designed to supply unvarying flow to all locations that need chilling. Extra steps to diminish the chance of pre ignition are the usage of two little exhaust valves as opposed to a individual big one, and the development of an effectual scavenging system, that is, a agency of displacing exhaust gas from the burning chamber with fresh air.Ignition SystemsDue to hydrogen ‘s low ignition energy bound, lighting H is easy and gasoline ignition systems can be used. At really thin air/fuel ratios ( 130:1 to 180:1 ) the fire speed is reduced well and the usage of a double flicker stopper system is preferred. Ignition systems that use a waste flicker system should non be used for H engines. These systems energize the flicker each clip the Piston is at top dead Centre whether or non the Piston is on the compaction stroke or on its exhaust shot. For gasolene engines, waste flicke r systems work good and are less expensive than other systems. For H engines, the waste flickers are a beginning of pre-ignition. Spark stopper for a H engine should hold a cold evaluation and have non-platinum tips. A cold-rated stopper is one that transfers heat from the stopper tip to the cylinder caput quicker than a hot-rated flicker stopper. This means the opportunities of the flicker stopper tip lighting the air/fuel charge is reduced. Hot rated spark stoppers are designed to keep a certain sum of heat so that C sedimentations do non roll up. Since H does non incorporate C, hot-rated flicker stoppers do non function a utile map. Platinum-tip flicker stopper should besides be avoided since Pt is a accelerator, doing H to oxidise with air.Crankcase Ventilation:Crankcase airing is even more of import for H engines than for gasolene engines. As with gasolene engines, un-burnt fuel can ooze by the Piston rings and enter the crankcase. Since H has a lower energy ignition bound than gasolene, any un-burnt H come ining the crankcase has a greater opportunity of lighting. Hydrogen should be prevented from roll uping through airing. Ignition within the crankcase can be merely a startling noise or consequence in engine fire. When H ignites within the crankcase, a sudden force per unit area rise occurs. To alleviate this force per unit area, a force per unit area alleviation valve must be installed on the valve screen. Exhaust gases can besides ooze by the Piston rings into the crankcase. Since H fumes is H2O vapor, H2O can distill in the crankcase when proper airing is non provided. The commixture of H2O into the crankcase oil reduces its lubrication ability, ensuing in a higher grade of engine wear.Emissions:The burning of H with O green goodss H2O as its lone merchandise: 2H2 + O2 = 2H2O The burning of H with air nevertheless can besides bring forth oxides of N ( NOx ) : H2 + O2 + N2 = H2O + N2 + NOx The oxides of N are created due to the high temperatures generated within the burning chamber during burning. This high temperature causes some of the N in the air to unite with the O in the air. The sum of NOx formed depends on:The air/fuel ratioThe engine compaction ratioThe engine velocityThe ignition timingWhether thermic dilution is utilisedIn add-on to oxides of N, hints of C monoxide and C dioxide can be present in the fumes gas, due to ooze oil combustion in the burning chamber. Depending on the status of the engine ( combustion of oil ) and the operating scheme used ( a rich versus thin air/fuel ratio ) , a H engine can bring forth from about zero emanations ( every bit low as a few ppm ) to high NOx and important C monoxide emanations. Power End product: The theoretical maximal power end product from a H engine depends on the air/fuel ratio and fuel injection method used. As mentioned in above, the stoichiometric air/fuel ratio for H is 34:1. At this air/fuel ratio, H will displace 29 % of the burning chamber go forthing merely 71 % for the air. As a consequence, the energy content of this mixture will be less than it would be if the fuel were gasolene ( since gasolene is a liquid, it merely occupies a really little volume of the burning chamber, and therefore allows more air to enter ) . Since both the carburetted and larboard injection methods mix the fuel and air prior to it come ining the burning chamber, these systems limit the maximal theoretical power gettable to about 85 % of that of gasolene engines. For direct injection systems, which mix the fuel with the air after the consumption valve has closed ( and therefore the burning chamber has 100 % air ) , the maximal end product of the engine can be about 15 % higher than that for gasolene engines. Therefore, depending on how the fuel is metered, the maximal end product for a H engine can be either 15 % higher or 15 % less than that of gasolene if a stoichiometric air/fuel ratio is used. However, at a stoichiometric air/fuel ratio, the burning temperature is really high and as a consequence it will organize a big sum of N oxides ( NOx ) , which is a criteria pollutant. Since one of the grounds for utilizing H is low exhaust emanations, H engines are non usually designed to run at a stoichiometric air/fuel ratio. Typically hydrogen engines are designed to utilize approximately twice every bit much air as theoretically required for complete burning. At this air/fuel ratio, the formation of NOx is reduced to near nothing. Unfortunately, this besides reduces the power end product to about half that of a likewise sized gasolene engine. To do up for the power loss, H engines are normally larger than gasolene engines, and/or are equipped with turbochargers or superchargers.Hydrogen Gas Mixtures:Hydrogen can be used well in internal burning engines as an linear to a hydrocarbon fuel. Hydrogen is most normally assorted with high force per unit area natural gas for this intent since both gases can be stored in the same armored combat vehicle. If H is blended with other fuels, it normally has to be stored individually and assorted in the gaseous province instantly before ignition. In general, it is impractical to utilize H in concurrence with other fuels that besides require bulky storage systems, such as propane. Gaseous H can non be stored in the same vas as a liquid fuel. Hydrogen ‘s low denseness will do it to stay on top of the liquid and non blend. Furthermore, liquid fuels are stored at comparatively low force per unit areas so that really small H could be added to the vas. Liquid H can non be stored in the same vas as other fuels. Hydrogen ‘s low boiling point will stop dead other fuels ensuing in fuel â€Å"ice† . Hydrogen can be used in concurrence with compact liquid fuels such as gasolene, intoxicant or Diesel provided each are stored individually. In these applications, the fuel armored combat vehicles can be formed to suit into fresh infinites on the vehicle. Existing vehicles of this type tend to run utilizing one fuel or the other but non both at the same clip. One advantage of this scheme is that the vehicle can go on to run if H is unavailable. Hydrogen can non be used straight in a Diesel ( or â€Å"compression ignition† ) engine since H ‘s car ignition temperature is excessively high ( this is besides true of natural gas ) . Therefore, diesel engines must be outfitted with spark stoppers or utilize a little sum of Diesel fuel to light the gas ( known as pilot ignition ) . Although pilot ignition techniques have been developed for usage with natural gas, no 1 is presently making this with H. One commercially available gas mixture known as Hythane contains 20 % H and 80 % natural gas. At this ratio, no alterations are required to a natural gas engine, and surveies have shown that emanations are reduced by more than 20 % . Mixtures of more than 20 % H with natural gas can cut down emanations further but some engine alterations are required. Thin operation of any internal burning engine is advantageous in footings of oxides of nitrogen emanations and fuel economic system. For hydrocarbon engines, thin operation besides leads to take down emanations of C monoxide and unburned hydrocarbons. As more O is available than required to burn the fuel, the extra O oxidizes more C monoxide into C dioxide, a less harmful emanation. The extra O besides helps to finish the burning, diminishing the sum of unburned hydrocarbons. As with H, the drawback of thin operation with hydrocarbon fuels is a decreased power end product. Thin operation of hydrocarbon engines has extra drawbacks. Thin mixtures are difficult to light, despite the mixture being above the LFL of the fuel. This consequence in dud, which increases unburned hydrocarbon emanations, reduces public presentation and wastes fuel. Another disadvantage is the decreased transition efficiency of 3-way catalytic convertors, ensuing in more harmful emanations. To some extent, blending H with other hydrocarbon fuels reduces all of these drawbacks. Hydrogen ‘s low ignition energy bound and high firing velocity makes the hydrogen/hydrocarbon mixture easier to light, cut downing dud and thereby bettering emanations, public presentation and fuel economic system. Sing power end product, H augments the mixture ‘s energy denseness at thin mixtures by increasing the hydrogen-to-carbon ratio, and thereby improves torsion at wide-open throttle conditions.Current Status:A few car makers have been making some work in the development of hydrogen-powered vehicles ( Ford has late announced that they have developed a â€Å"production ready† hydrogen-powered vehicle utilizing an ICE and BMW has completed a universe circuit exposing a twelve or so hydrogen-powered 750i vehicles ) . However, it is non likely that any hydrogen-powered vehicles will be available to the populace until there is an equal re-fuelling substructure and trained tech nicians to mend and keep these vehicles. Like current gasoline-powered vehicles, the design of each H powered vehicle will most likely vary from maker to maker and theoretical account to pattern. One theoretical account may be simple in design and operation, for illustration, a thin combustion fuel metering scheme utilizing no emanation control systems such as EGR, catalytic convertor, evaporate fuel case shot, etc. Another theoretical account may be really sophisticated in design and operation, for illustration, utilizing an EGR fuel metering scheme with a catalytic convertor, multiple flicker stoppers, etc. Until such clip that a H substructure exists, hydrogen/natural gas fuel blends provide a logical passage to to the full hydrogen-powered vehicles. These vehicles can run on either fuel, depending on handiness

Proposal of Dissertation Essay Example | Topics and Well Written Essays - 1000 words

Proposal of Dissertation - Essay Example Though, this particular research is carried out primarily with an academic interest, yet if carried out in an objective manner, research not only helps the researcher in knowing about many unknown aspects, but it often provides a benchmark for future researches as well. Quite often industry too takes a cue from such studies in their policy papers etc. depending upon the objectives and inferences of the study. Research philosophy is a belief about the way in which data about a phenomenon should be gathered, analyzed and used. This dissertation is a more of a qualitative case study focusing on an analysis of the e-business phenomenon in general and analysis of some specific examples. While the concept has proved to be a revolutionary one, there are some concerns as well. During the course of the research an effort would also be made to analyse such concerns. To carry out such a study in general we resort to the following main approaches; In addition to reviewing the existing literature available in the public domain, efforts would also be made to seek opinion of some people involved in e-business operations. This sample group of people would comprise of users, technology service providers, company owners/ managers and some government functionaries or regulators. This will not only help in finding out some primary data, but it will also provide me an opportunity to gain some first-hand information. Whilst this study required participation of human subjects, consent and confidentiality will be a significant issue. If we need to conduct interview or solicit responses to the questionnaire during the course of the research, all possible efforts would be made to communicate the aim and purpose of the study to the participants beforehand. Acquiring informed consent is vital to a researcher. Such a consent document serves as protection both for

Solar Panel Battery Charger 6-12V Research Paper

Solar Panel Battery Charger 6-12V - Research Paper Example The comparator compares the voltage from the battery and acts as a switch for the voltage regulator circuit. Finally, the battery voltage checker checks the voltage of the battery (as it received from the panel) to determine if the battery needs to charge more. The circuit is designed to be simple, efficient and reliable by using easily available field replaceable parts. It uses a 12V, 5W solar panel rated from 100 milliamps to 1A and a lead acid or other rechargeable battery that is rated from 500 milliamp hours to 40 amp hours of capacity. This circuit regulates the voltage flow from the photovoltaic panel to the lead acid battery. It can produce currents up to 150mA. When external pass transistors are added to this circuit, output currents can reach up to 10A. The maximum input voltage to this circuit is 40V (LM723, 2004) with an output voltage adjustable between 2V and 37V. This circuit consists of a series regulator, LM723. ... Figure 11 and Figure 12 are the connection diagram and the datasheet circuit (Voltage regulator, 2012) as below: Figure 11: Connection Diagram Figure 12: Datasheet Circuit The basic building blocks of LM723 are: 1 The Reference Voltage Amplifier 2 The Error Amplifier 3 The Series Pass Transistor. The equivalent circuit of LM723 (LM723/LM723C Voltage Regulator, 1994) is shown in Figure 13 as below: Figure 13: Equivalent circuit of LM723. The main components used in the voltage regulator circuit are (Table 1): Table 1: Main components of the voltage regulator circuit Quantity Component Value 1 LM723 - 1 R1 4.87k ? 1 R2 7.15k ? 2 Transistor 2N3055 1 Diode 1N4007 1 VR 10k ? 1 C1 0.1?F 1 C2 500PF Calculations: Following are the calculations for design and operation of the circuit: Output voltage- Vout = Vref x ((R1+R2)/R2) Where R1= 4.87K, R2= 7.15K and Vref= 7.35V from the datasheet. Vout= 7.35 x ((4.87 + 7.15)/7.15) = 12.36V. Figure 14: Output voltage. Current- The current is establishe d from the Darlington transistor pair in the regulator circuit (Q1 and Q2 in Figure 10). Q1 and Q2 (2N3055) are silicon, Epitaxial-Base Planar NPN transistor mounted in a Jedec TO-3 metal case (Charger Circuit for 6V or 12V Car Battery, 2012) and are recommended for use in power switching circuits, series and shunt regulators, output stages and high fidelity amplifiers. Figure 15 shows the Darlington transistor pair: Figure 15: Darlington transistor pair used in voltage regulator circuit. In this circuit, a voltage of 0.7V is applied to the base (B) of the first transistor (TR1) to switch it on. A current of 300 milliamps passes through the first transistor from the collector (C) to the Emitter (E). The emitter of TR1 is connected to the second

Legal Environment Surrounding Sale and Purchase of Goods Essay

Legal Environment Surrounding Sale and Purchase of Goods - Essay Example According to Crose & Miller (2011), in any legal undertaking it is good to understand about what is legally right and what is legally wrong in any kind of legal issue. Therefore, it is advisable that Winston understand where his rights were infringed and where he might have failed during contract signing so that he can lay out a base for his legal arguments. This would enhance his chances of winning the case and thus enabling him to obtain compensation. As a plaintiff in this case he also need to understand the courts that will be involved if the case reaches litigation stage and the procedures involved in this stage so that he can prepare adequately. This paper plays a very significant role in explaining these issues and thus it would be of great assistance to Winston. Any kind of legal environment or undertaking is influenced by various factors. According to Meiners et al (2011), some of the factors that influence the legal environment are the needs and demands of the business comm unity, consumers, and the government. In this paper, we start by explaining the issues surrounding these factors. These issues are like the difference between express and implied terms, sales of goods act, difference between consumer and non-consumer sales, and process and procedures involved in the litigation stage of a case. ... These terms are rigid and cannot change to implied term whatever the case that interpret them. They also do not have further categories and we cannot have very many of them in a contract. However, each contract must have several of those terms clearly understood by both parties before signing. All other terms found in a contract, which are not express term, are regarded as implied terms. Unlike the express terms, these terms are subdivided to those implied primarily by factual circumstances of the agreements and those implied primarily by the law (Klass 2010). Also unlike the express terms, the terms implied by the factual circumstances of the agreement can change to express terms depending on the situation that interpret them. They are also found in larger number in any form of a contract. However, these two terms have one similarity, which is that they have to be included in any form of a contract and each party must read and understand them before signing the contract. According t o Klass (2010), when interpreting a contract, a court gives more priorities to express terms as compared to implied terms. This is merely because of their characteristics and their ability to explain the contract and the situation in which the contract was made. The express terms can also reveal some of the factors that made either of the parties to sign the contract. Therefore when signing any form of a contract one should be very careful with the express terms because they can play a very great part in making a case ruled to your advantage in case of any dispute arising from the contract. Sales of goods act The sales of goods act deals mainly with the sales contract

Attachment Style Research Paper Example | Topics and Well Written Essays - 500 words

Attachment Style - Research Paper Example Further, the Close Relationships Questionnaire, as I see it, is quantitative than qualitative. It attempts to measure the emotion or feeling of a person towards his/her beloved/lover. My attachment style has been calculated: 4.38 for anxiety and 4.50 for avoidance. With this data, it seems that I am pessimistic to my relationship; that is not sophisticated. I know myself more than what the Close Relationships Questionnaire tells me. I cannot agree to the â€Å"findings† set by such questionnaire. It says that I am fearful-avoidant in relation to my attachment style. The questionnaire explains that â€Å"[t]hey [e.g., myself] tend to avoid becoming emotionally attached to others, and, even in cases in which they do enter a committed relationship.† Perhaps it is true, at certain extent that I tend to be emotionally unattached to my partner. By emotionally unattached, I mean I do not share or express explicitly to my partner what I feel to certain thing or event. Neverthel ess, I am sensitive to the emotion or feeling of my partner. If she shares something to me, I listen to her. In essence, I do not completely avoid emotional stuff between me and my partner. Sigmund Freud argues that the adult people’s character or behavior originates from, or is influenced by, his or her childhood years. Probably there is truth in that.

Literature Review - Marketing of luxury cars depending on affinity

- Marketing of luxury cars depending on affinity groups in America and The Middle East - Literature review Example In order to analyze the learning style, four vital tests have been used which are Myers-Briggs test, Belbin test, Honey & Mumford test and VARK analysis. From the analysis of Myers-Briggs test I have found that I possess the ENFJ learning style. The results of Belbin test depict that in team environment I act as plant, resource investigator and shaper. On the other hand, the Honey & Mumford test depict that I am activist and pragmatist learner. Finally outcome, of VARK analysis suggest that I prefer visual and kinaesthetic learning style. The assignment also describes about the transferrable skill I possess and how these skills can be used in my career. The discussion in Part B of the assignment elaborates on the current market trends witnessed in relation to the luxury car market around the world. Contextually, it argues that despite the rise in the demand of luxury cars across the globe, the American car market has witnessed significant fall in the production of luxury cars. Additionally, America is considered to be the home of diverse culture, owing to which, the luxury car market in the nation can be observed as significantly influenced by the Hispanic population. Hence, marketers of luxury cars have currently been involved in attracting reasonable Hispanic population towards their respective luxury car brands. On the other hand, luxury car markets in the Middle East have been flourishing at much greater speed due to the rise in the level of disposable income as well as due to the improvements in the roadway transportation facilities. The findings obtained through this study further reveals in this regard that the marketing str ategy related with luxury cars in America and the Middle East in years to come is quite likely to be strongly influenced by the affinity factor. Simultaneously, Customer Relationship Management (CRM) may also positively influence the marketing strategies of the luxury cars

Master Harold and the Boys Essay Example for Free

Master Harold and the Boys Essay â€Å"Master Harold† and the boys, by the white South African playwright Athol Fugard, is a naturalistic play set in a Tea Room in Port Elizabeth on a rainy day in 1950. Two black servants, Sam and Willie, and their white master’s son Hally (‘Master Harold’), have deep conversations about the good time they had together when Hally was young. In the beginning of the play, Sam and Willie, practice their dancing techniques and talk about an upcoming dance contest. Fugard has created first impressions of situation and characters in the opening of the play by using set design, stage directions, duologue as well as speech and tone. The opening of the play is interpreted as being up to Hally’s first entry. Firstly, the unprofessional and for the audience surprisingly casual and light-hearted situation is created by Fugard’s choice of set design, stage directions and duologue. Secondly, Sam and Willie’s relationship is proven of unequal status, yet intimate and deep, by the difference in speech and tone, and by the choice of topics in the duologue. Finally, initial perceptions of a childish and rude Willie and an intelligent and experienced Sam are constructed through mostly speech and tone. The unprofessional impression of the Tea Room and the carefree and easy going ambiance is created by set design and stage directions, and duologue. Firstly, the amateurish impression of the business is created by the blackboard on which an untrained hand has chalked up the prices of the items, and by the few sad ferns in pots in the room. Furthermore, the fact that Fugard has chosen to clear all tables to one side, suggests that the business is not doing well, because the Tea Room is not likely to be expecting any customers. Secondly, the audience notices immediately that the mood in the room is casual, by letting Willie start off with singing a song as he mops down the floor. This strong mood is then reinforced when Willie suddenly gets up and starts dancing, Sam eagerly encouraging and correcting Willie’s dance technique. The audience must have been surprised by this casual situation, because one must not forget that at the time of the performance, around 1982, apartheid in South Africa was considerably further developed than the setting of the play. The fact that two black men, obviously workers, are without supervision of a white person and that they are enjoying themselves during work must have raised a sense of unease from the spectators, unsure how to react. The relationship between Sam and Willie is profound, yet Sam seems to have a higher status compared to Willie, as suggested by Fugard’s choice of topic of conversation and by the contrast between the terms of address and physical position. To begin with, the way in which both men communicate is very informal. Willie uses plenty of swear words, like â€Å"fuckin’ whore† or â€Å"bitch†, whereas Sam uses a higher register, but is still joking around with Willie (â€Å"How’s your pillow with the quickstep?†). This use of language suggests that both men feel at ease and that they have known each other for a very long time already. A sense of intimate relationship is also created by the topics of conversation. Willie is very open with Sam about his relationship with Hilda Samuels, as when he talks about the problems buying food for their baby of which he isn’t even sure it is his son (â€Å"Only his hair looks like me.†); he shows no hesitation to discuss the matter with Sam. Sam even knows that Willie often beats up his girlfriend, suggesting that they have been living alongside for a long time. The audience realises that it is watching an intimate conversation, which makes them attentive, curious and involved in the discussion. Secondly, Sam’s higher social position is suggested by the contrast between the way Sam addresses Willie and vice versa, almost like a teacher-student relation. Sam suggests improvements for Willie’s dance technique, as â€Å"Don’t look down!† or â€Å"But you’re too stiff!†, as well as how he could be more successful in his relationships with girlfriends (â€Å"You hit her too much.†) and Willie reacts willingly to take up the advice. Also, Sam demonstrates the dance as it should be, suggesting that Sam is more experienced. Lastly, a subtle but symbolic detail is the physical positioning of Sam and Willie at the very beginning of the play: Willie is mopping down the floor on his knees, working, while Sam is flicking through a comic book, standing, and obviously not working. Fugard has visualised their relationship by the contrast between kneeling and sitting, and working and relaxing, and this can in fact be applied to the entire rest of the play. Sam is portrayed as a confident, intelligent and experienced character through his speech and tone. The way Sam guides Willie through the learning process of the quickstep, and even demonstrates a much more accomplished dance than Willie, indicates he is a skillful dancer himself. Fugard has made the audience feel sympathy towards Sam, as he encourages Willie, â€Å"Look happy, Willie! Relax Willie!†, although Willie is a hopeless dancer. Fugard represents Willie’s character as slightly vulnerable, unexperienced, and as a bad lover through his reactions to Sam’s teasing, the difficulties he has with learning the quickstep and through his description of his relationship with girlfriends. Willie is very quickly frustrated by Sam’s advice, like â€Å"Yesterday I’m not straight today I’m too stiff!† and â€Å"I try hard because it is hard.†. Willie’s incapability to cope with Sam’s teasing once even results in a small brawl between the two of them: â€Å"It’s finish between us.† Furthermore, Willie is clearly a bad love partner, confirmed when he describes his girlfriend as a â€Å"whore† and a â€Å"bitch†, but which is, quite ironically, provoked by himself hitting his girlfriend every once in a while. This, together with his vulgar choice of language, results in an aversion from the audience to Willie. To conclude, Fugard has managed to create strong first impressions in the opening of the play in terms of situation and characters. He has used set design, stage directions and duologue to create an unprofessional and casual ambience. In terms of characters, Fugard has succeeded in associating strong characteristic features to Sam and Willie, both intimate friends, yet separated in a way by an intellectual line.