Millennial Generation Assignment Example | Topics and Well Written Essays - 500 words

Millennial Generation - Assignment Example As such, the changes associated with this group cannot be easily understood at times. The imprints of the generation are moved in the lifecycle of the people, with the most significant impression being seen among the youth. The millennials are considered to be vulnerable to interference. This is claimed to be as a result of multitasking. Despite science claiming that multitasking is a myth, it is quite evident that this generation shows extraordinary multi-tasking abilities. This is seen in places of work and at home. Millennials have grown exposed to a variety of technological advancements and this has motivated them to carry out several duties and activities at the same time. They are always putting their brains with the extensive multitasking training. Evidence has shown that long time engagement in the simultaneous playing of video games, doing assignments and watching television has reduced the ability of the brain to perform thus, making them more vulnerable. It is, however, worth noting that the multi-tasking has allowed them to increase their brain processing speed making the ability to quickly learn and adapt to new environments. There is a popular belief that millennials are more caring and more community oriented. This is shown by their ability to show concern to their colleagues at home and in their places of work. According to Chip, Ukleja, and Rusch, the caring aspect of this generation comes from the environment that such people grow up in. Their childhood is affected by family and social influences that ensure that they develop to become people interested in extrinsic life goals (102). Several products like reality Television, iWorld, and NCLB exposes the generation to the external world and motivates them to engage others socially and culturally. In the long run, it makes them engaged in external life aspects and promotes a caring attitude or trait among them. The millennials are also more open-minded as compared to other generations.  

In countries that do not have an Islamic Legal system, disputes Research Paper

In countries that do not have an Islamic Legal system, disputes related to Islamic financial transactions can lead to outcomes t - Research Paper Example Sharia law, as a moral code and religious law for Muslims; addresses various perspectives of human activities such as economics, crimes and politics, as addressed by secular laws, and it seeks to differentiate intentions, interactions and decisions between those that are good and those that are bad (MacEoin and Green, 2). Just like the secular laws, Sharia code of ethics touch on various interactions of the human race giving the prospects and punitive aspects whenever the codes are breached, though from the secular observation of Sharia being a religious law, it has provisions that make the laws holistic in guiding and governing human interactions making it fall under and satisfy individual legal systems. Economically, just like Christian finance, Sharia economics presents the economic systems that conform to the Islamic scriptures and traditions; behavioral norms and foundations, Zakat tax as the basis of Islamic fiscal policy and other economic provisions that holistically covers t he economic and finance sector (Bonner, 397). Though close and similar to the secular and other traditional laws, in countries that there is no Islamic Legal System, disputes related to Islamic Financial Transactions can lead to outcomes that contradict Sharia Principles. Sharia principles like the secular laws have provisions that govern the Islamic Investment Funds; where investors pool their surplus money for the purpose of its investments to earn profits, Halal, but governed and in strict conformity with Sharia laws, and the subscribers receive certification entitling their pro- rated profits accrued from the fund. The Islamic banking phenomenon is based on sector of profitable for investor that represents growth for positive reputation and responsible management, and by fueling growth that is necessitated by increasing demand stimulated by rising number of Muslims in common law and civil law countries (Imady, Omar and Hans, pp.4-6). The conflict is bound to occur especially on the business ethics provided for by Sharia laws in relation to these countries’ provisions whereby the Islamic economic systems are neither socialists nor capitalist, conflicting interests of natives and the economic outlook of these countries. For instance, Sharia provides for Zakat; a practice of charitable giving by Muslims based on the accumulated wealth, and obligatory to all that are able to do so, contravenes with capitalists economies where in most cases taxation is mandatory to all irrespective of economic background and/ or social class. This would further lead to conflicts especially if certain sections of Sharia have to be incorporated in these countries’ laws such as contractual agreements and financial transactions due to different expectations from both sides and the conflict to the national interests. Capitalist societies/ economies rely on creation of value which can be tangible, for physical goods and/ or intangible for services; which involves transa ctions that mutually benefit the parties, the consumer gets the added value to the product/ service, and the retailer or the producer gets the entrepreneurial profits and royalties which may include interest on shares. To the contrary, the Sharia provisions for legal entity or a business that is Halal as a company that does not borrow money on interest and/or keeps their surplus in interest bearing accounts; and that one being a shareholder of such a company becomes a Sharik, agent for the partners in the matters of

Journal #2 Assignment Example | Topics and Well Written Essays - 1000 words

Journal #2 - Assignment Example The wallet might communicate a message that I love and feel proud of my name, since I have its initials inscribed on my wallet. My wrist watch hold a special place amongst my personal items, since it was given to me as a birthday present by my childhood friend who relocated from our state after our high school graduation, and his friendship spot has never been filled to present day. The wrist watch might communicate that I highly value gold watches, even though the real reason I always have it is because I loved my childhood friend very much and it always reminds me of him. The family photograph in my wallet reminds me of my loving family and helps me to always keep emotionally attached to them. The photograph might communicate that I love and value my family very much, that is why I always have their photograph with me. The ‘Thank You’ card reminds me of the voluntary services I offered at a hospice during my sophomore summer holiday, where I helped attend to old and terminally ill patients in a local hospital. The local hospital in turn sent me the ‘Thank You’ card as an appreciation of my effort and services. a. Self-disclosure refers to a communication approach that entails an individual revealing personal information related to his/her history and the present, more so as related to emotions and thoughts (Zur, 2011). b. I regularly self-disclose to my childhood friend almost every issue that affects my life no matter how much confidential it might seem to be, since he does the same with me. The reason for self-disclosing to my friend is because we have grown up together and he knows virtually everything about my life, my family background and all the childhood activities and memories that I cherish. Having been of the same age, I and my childhood friend spent most of the times together since we hailed from the same

Consumer Advertising Ethical Essay Example for Free

Consumer Advertising Ethical Essay She then pulls out a magazine and begins to turn through the pages when she find an advertisement for a prescription drug to treat migraines. This drug could ease her pain and let her resume her normal activities. Is it wrong for her to see this ad? Absolutely not. ?Sharing information with the public about possible cures is morally right. Withholding information that can save someones life is morally wrong. Direct advertising to consumers of pharmaceutical drugs is ethical based on a deontological perspective. Kant considered what is right over what is good to be   superior (wikipedia). In the case of direct-to-consumer drug advertising, the right of sharing information about cures and possible ailments outweighs any possible good that can be made on behalf of the advertisers. It does not matter that the advertising companies and the pharmaceutical companies will make money off of the patients purchasing the drugs. What is most important is sharing the knowledge with those patients. When the general public is presented with information about pharmaceutical drugs not only are they given information about something that can provide treatments for symptoms they may be having, but it also informs them about what certain groupings of symptoms may be. For example, a person having strange pains in his/her legs and doesnt know what it is and might not seek medical attention. However, if he/she sees an advertisement on television that describes those exact symptoms he/she is experiencing, the advertisement would give the ailment a possible name. This information could help that person when he/she goes to see his/her doctor. The patient can describe what he/she is experiencing and tell the doctor about the ad that made him/her think there was a reason to visit the doctor for treatment. Some cases will be serious and others will be minor, this is not important. What is important is that the public was granted this information in an easily accessible format the advertisement. ?The United States and New Zealand are the only two developed countries that allow direct-to-consumer advertising of pharmaceutical drugs (DeGeorge 320). Health care works differently in the U. S. than in other parts of the world like Europe and Canada. Because of the major differences in health care, DTC is more welcomed in these countries than in others. Here in the U. S. many people are paying for their own health care out of pocket unlike other places where it is provided at no cost. In other countries you dont have to worry about whether or not you can afford to go to the doctor and/or pay for the visit and prescriptions. DTC advertising is more welcomed in the U. S. because people want to feel empowered and be given choices. Here there are a lot of options because people pay for what they think they need even if it is not the best option for them. ?People make decisions based on what they are convinced they need. In the U. S. you, or your insurance that you most likely pay for, have to pay for every lab and every doctor visit. So in the U. S. many people would rather treat symptoms than fix a problem. DTC advertising knows this and uses it to their advantage. Canadian Medical Association president  Henry Haddad, M. D. stated, The message U. S. consumers are getting is that pharmaceuticals are simply consumer commodities rather than complex therapeutics. We think that interferes with the physician–patient relationship by raising the expectations of patients and pressuring physicians to prescribe drugs. † (Fintor) This is a prime example of why other developed nations are not proponents of DTC advertising. ?When you look at direct-to-consumer advertising based on a utilitarian perspective it would be considered morally wrong. In utilitarianism you can only judge somethings moral value once you know all of the consequences (wikipedia). This means that every consequence needs to be examined and weighed. As a result of DTC advertising of pharmaceutical drugs, not only is the pubic informed about illnesses and a variety of ways to treat said illnesses, but also a plethora of other consequences that add negatively to the moral value of the action. ?One negative consequence to seriously consider is the money that is gained by pharmaceutical companies, advertisers, and doctors. Money will drive people to do almost anything regardless if it is morally right or wrong. When consumers see an advertisement for a drug they might try to identify with the ad and feel it necessary to visit their doctor. Once they visit the doctor they will claim to have symptoms that were described in the advertisement and then ask for a prescription to the drugs that were shown. Once the doctor prescribes these drugs the money is gained by all the involved parties and is lost by the patients. ?Many of the drugs prescribed have harmful side-effects that are downplayed by the advertisements. Its all about the money and not the well-being of the patients. This is clearly displayed in a study that showed that a pharmaceutical company saw a return of $4. 0 for every dollar spent on advertising (DeGeorge 319). Thats an incredible 420% percent profit margin. With profits like that its easy to understand why the moral consequences have been ignored. It would be morally wrong for people to take advantage of consumers and capitalize on their illnesses. If the pharmaceutical companies were really all about informing the public about illnesses and treatments they would do it without receiving any money. Taking away the profit aspect of the pharmaceutical world would change the advertising and probably the drugs themselves. With no profits involved there would not be the push that there is to find something that could work to treat an illness regardless of the consequences. Scientists would strive to find treatments that would help people and not harm them; this is the basis of utilitarianism, weighing all of the good and the bad. In conclusion, direct-to-consumer advertising of pharmaceutical drugs has both positive and negative consequences. Do I believe people making money off of the misfortune of others is right? No. However, I do believe is our duty to inform and educate people about illnesses and possible treatments.The health and well-being of the population of the world is much more important than someone making a dollar.

Nortel Meridian :: essays research papers

INPUT/OUTPUT CRASH COURSE Meridian crash course faq798-5880 Posted: 20 May 05 (Edited 3 Jun 05) Programming Meridian SL1 PBX This is a short introduction into programming a Meridian PBX. The Meridian PBX's software divides information into LOADS. Each Load has a specific function for example. LD 20 is where you can print information about phones. The loads range from LD 01 - LD 143 How to HyperTerminal in to the PBX and VOICEMAIL Systems. 1. Launch HyperTerminal 2. Set phone number to your modem dialin number 3. Set terminal emulation to VT102 X Modem 4. Dial†¦ it should end up at a blank HyperTerminal window 5. Type the password to access the PBX modem. This will not show up on the screen when you type it. The screen should now display â€Å"Ok, You are now transparent to port 1†. 6. Type â€Å"logi† to login, then the password. 7. You should now have a > command prompt. To go from PBX commands to VOICEMAIL (in Hyperterminal) 1. Go to â€Å"File†, â€Å"Properties†, â€Å"Settings† and set the terminal emulation to VT100. 2. At the >, type â€Å"AX† 3. Hit â€Å"F1† to bring up the command bar at the bottom. 4. Hit â€Å"F1† again to Logon To go from VOICEMAIL back to PBX (in Hyperterminal) 1. EXIT all the way out of VOICEMAIL, back to where F1 says â€Å"logon† (lower left button) 2. Go to â€Å"File†, â€Å"Properties†, â€Å"Settings† and set the terminal emulation to VT52. 3. hit â€Å"Ctrl ]† TO EXIT IMPORTANT – Do NOT exit HyperTerminal until you have logged out of BOTH the VOICEMAIL and PBX Command System (â€Å"logo† is the PBX logout command) Basic commands LOGI = LOG IN LOGO = LOG OUT **** = TO CLOSE LOAD ** = RETURN TO REQ PROMPT ERR SCHXXXX = Explanation of error code ( ovl†¦sch†¦) DNB = DIRECTORY NUMBER (DN) a.k.a. phone extension ex: 2300 TNB = TERMINAL NUMBER (TN) (port number on the switch) = i.e. 24 00 02 05 - 24=Loop 00=Shelf 02=Card 05=Unit = *Please note: Enter "spaces" between the numbers: CUST: Customer number (almost always "0" unless you have more then one customer set up) Short Cut's For Option 11's: When entering the "TN" information you don't have to insert all the 0's. i.e. 09 00 00 02 would only be 9 2. ============================================================ Logging in: Be carful not to log in more than 3 time incorrectly, If you see OVL400 this means you are locked out for up to 45 Minutes. You should see this when you press return:">" or "OVL000"

Alien Coursework

I am in this room alone, petrified and exasperated of what the humans did to me. They attempted to execute me just because I was unequivelent to them. My feelings are hurt, they aren't adequate words in this world to portray my feelings. I was innocent, my only felony was being born an alien . Surviving that harrowing assault was simply impossible. I have mixed emotions about surviving the attack, I'm ecstatic to get out alive, but a part of me wishes I just perished in that attack in order to exit my long-term melancholy. Not knowing where I was, was an idea that petrified me. Observing my other friends getting murdered was an indescribable horror. I am now left solitary in this abnormal world, This whole incident has been appalling, I never thought in a million years that I'd have to face such a tough ordeal. Thank god the humans living in this house don't know where I am, or else I would've been brutally slaughtered too. Those humans are callous , any random creature they see, they will jump to the conclusion that this creature is detrimental also must be eliminated from this planet. My feelings for the humans is filled with vexation, they literally took my life away. A part of me doesn't blame them because some people don't intend to hurt us, they are just simply intimidated and only want to protect their loved ones from this contrasting creature. All I want to do now is go home. I am working really hard to find a way out of this world, it took time, but I finally came to the conclusion that there is just no way out of here. My nightmare has arrived and that is being trapped with people who loathe you and also are out there to dispatch you. Whatever happened to the saying â€Å"Where there's a will there's a way†? I explicitly have the will but couldn't figure out the way. Perhaps I should've died along with my fellow friends who were with me in this entire tribulation. Being dead is certainly much better than thinking of what do next. Continuation Next page As my friends vanished, I felt that I vanished too. They were a part of me, If they were not gone I would collaborate with them. All I want to do now is get out of this gruesome planet, find a new futuristic place where people actually adore and appreciate you, also treat you benevolently. But I know, this is all a hallucination and is dubious to become true. I have no idea where life will take me next, but I do know I want to get out of this ghastly house. I have learned today that life is arduous. No matter what you do there will always going to be some complications that are unpreventable, but it all comes down to how you face your problems. The way I'm going to face it is move on and try to forget about what happened, I ought to acquire a way out of here.

Emission Control

Emission Control Techniques 1. INTRODUCTION The need to control the emissions from automobiles gave rise to the computerization of the automobile. Hydrocarbons, carbon monoxide and oxides of nitrogen are created during the combustion process and are emitted into the atmosphere from the tail pipe. There are also hydrocarbons emitted as a result of vaporization of gasoline and from the crankcase of the automobile. The clean air act of 1977 set limits as to the amount of each of these pollutants that could be emitted from an automobile. The manufacturers answer was the addition of certain pollution control devices and the creation of a self-adjusting engine. 1981 saw the first of these self-adjusting engines. They were called feedback fuel control systems. An oxygen sensor was installed in the exhaust system and would measure the fuel content of the exhaust stream. It then would send a signal to a microprocessor, which would analyze the reading and operate a fuel mixture or air mixture device to create the proper air/fuel ratio. As computer systems progressed, they were able to adjust ignition spark timing as well as operate the other emission controls that were installed on the vehicle. The computer is also capable of monitoring and diagnosing itself. If a fault is seen, the computer will alert the vehicle operator by illuminating a malfunction indicator lamp. The computer will at the same time record the fault in it's memory, so that a technician can at a later date retrieve that fault in the form of a code which will help them determine the proper repair. Some of the more popular emission control devices installed on the automobile are: EGR valve, Catalytic Converter, Air Pump, PCV Valve, Charcol Canitiser etc. Like SI engine CI engines are also major source of emission. Several experiments and technologies are developed and a lot of experiments are going on to reduce emission from CI engine. The main constituents causing diesel emission are smoke, soot, oxides of nitrogen, hydrocarbons, carbon monoxides etc. Unlike SI engine, emission produced by carbon monoxide and hydrocarbon in CI engine is small. Inorder to give better engine performance the emission must be reduce to a great extend. The emission can be reduced by using smoke suppressant additives, using particulate traps, SCR (Selective Catalytic Reduction) etc. 2. EMISSION CONTROL IN SI ENGINE 2. 1. Methods to reduce emission in SI engine. 2. 1. 1. Catalytic Converter Automotive emissions are controlled in three ways, one is to promote more complete combustion so that there are less by products. The second is to reintroduce excessive hydrocarbons back into the engine for combustion and the third is to provide an additional area for oxidation or combustion to occur. This additional area is called a catalytic converter. The catalytic converter looks like a muffler. It is located in the exhaust system ahead of the muffler. Inside the converter are pellets or a honeycomb made of platinum or palladium. The platinum or palladiums are used as a catalyst (a catalyst is a substance used to speed up a chemical process). As hydrocarbons or carbon monoxide in the exhaust are passed over the catalyst, it is chemically oxidized or converted to carbon dioxide and water. As the converter works to clean the exhaust, it develops heat. The dirtier the exhaust, the harder the converter works and the more heat that is developed. In some cases the converter can be seen to glow from excessive heat. If the converter works this hard to clean a dirty exhaust it will destroy itself. Also leaded fuel will put a coating on the platinum or palladium and render the converter ineffective. 2. 1. 2. PCV Valve The purpose of the positive crankcase ventilation (PCV) system, is to take the vapors produced in the crankcase during the normal combustion process, and redirecting them into the air/fuel intake system to be burned during combustion. These vapors dilute the air/fuel mixture, they have to be carefully controlled and metered so as not to affect the performance of the engine. This is the job of the positive crankcase ventilation (PCV) valve. At idle, when the air/fuel mixture is very critical, just a little of the vapors are allowed in to the intake system. At high speed when the mixture is less critical and the pressures in the engine are greater, more of the vapors are allowed in to the intake system. When the valve or the system is clogged, vapors will back up into the air filter housing or at worst, the excess pressure will push past seals and create engine oil leaks. If the wrong valve is used or the system has air leaks, the engine will idle rough, or at worst engine oil will be sucked out of the engine. 2. 1. 3. EGR Valve The purpose of the exhaust gas recirculation valve (EGR) valve is to meter a small amount of exhaust gas into the intake system; this dilutes the air/fuel mixture so as to lower the combustion chamber temperature. Excessive combustion chamber temperature creates oxides of nitrogen, which is a major pollutant. While the EGR valve is the most effective method of controlling oxides of nitrogen, in it's very design it adversely affects engine performance. The engine was not designed to run on exhaust gas. For this reason the amount of exhaust entering the intake system has to be carefully monitored and controlled. This is accomplished through a series of electrical and vacuum switches and the vehicle computer. Since EGR action reduces performance by diluting the air /fuel mixture, the system does not allow EGR action when the engine is cold or when the engine needs full power. [pic] Fig. 2. 4. EGR Valve 2. 1. 4. Evaporative Controls Gasoline evaporates quite easily. In the past these evaporative emissions were vented into the atmosphere. 0% of all HC emissions from the automobile are from the gas tank. In 1970 legislation was passed, prohibiting venting of gas tank fumes into the atmosphere. An evaporative control system was developed to eliminate this source of pollution. The function of the fuel evaporative control system is to trap and store evaporative emissions from the gas tank and carburetor. A charcoal canister is used to trap the fuel vapors. The fuel vapors adhere to the charcoal, until the engine is started, and engine vacuum can be used to draw the vapors into the engine, so that they can be burned along with the fuel/air mixture. This system requires the use of a sealed gas tank filler cap. This cap is so important to the operation of the system, that a test of the cap is now being integrated into many state emission inspection programs. Pre-1970 cars released fuel vapors into the atmosphere through the use of a vented gas cap. Today with the use of sealed caps, redesigned gas tanks are used. The tank has to have the space for the vapors to collect so that they can then be vented to the charcoal canister. A purge valve is used to control the vapor flow into the engine. The purge valve is operated by engine vacuum. One common problem with this system is that the purge valve goes bad and engine vacuum draws fuel directly into the intake system. This enriches the fuel mixture and will foul the spark plugs. Most charcoal canisters have a filter that should be replaced periodically. This system should be checked when fuel mileage drops. 2. 1. 5. Air Injection Since no internal combustion engine is 100% efficient, there will always be some unburned fuel in the exhaust. This increases hydrocarbon emissions. To eliminate this source of emissions an air injection system was created. Combustion requires fuel, oxygen and heat. Without any one of the three combustion cannot occur. Inside the exhaust manifold there is sufficient heat to support combustion, if we introduce some oxygen than any unburned fuel will ignite. This combustion will not produce any power, but it will reduce excessive hydrocarbon emissions. Unlike in the combustion chamber, this combustion is uncontrolled, so if the fuel content of the exhaust is excessive, explosions that sound like popping will occur. There are times when under normal conditions, such as deceleration, when the fuel content is excessive. Under these conditions we would want to shut off the air injection system. This is accomplished through the use of a diverter valve, which instead of shutting the air pump off diverts the air away from the exhaust manifold. Since all of this is done after the combustion process is complete, this is one emission control that has no effect on engine performance. The only maintenance that is required is a careful inspection of the air pump drive belt. 2. 2. Modification in SI engine to reduce emission. †¢ Multi-port fuel injection system to completely replace carburetors. †¢ Electronic engine management to accurately regulate fuel supply to cylinders by sensing various engine parameters. 4-valve system to replace 2-valve system, improved combustion chamber design and improved inlet manifold design for axial stratification of charge. †¢ Turbo-charged (TC) and Turbo-charged After Cooled (TCAC) engines. †¢ Turbo-compounded engines; they are found to be upto 18 per cent better than the conventional engines. †¢ After treatment, catalytic co nverter and exhaust gas recycling. Some future directions for engines are: †¢ Lean burn technology, air-fuel ratio as lean as 22:1 is possible with 4-valves, high swirl and squish generated turbulence. †¢ Use of ceramic components (e. g. low density Silicon Nitride, Si3N4) such as piston pins, valves, blades in turbochargers. †¢ Variable Valve Activation (VVA) providing improved charge control of SI engines, reducing fuel consumption by 5 per cent at low/medium speed and  13  Ã‚   per cent at full engine speed. †¢ 3. EMISSION CONTROL IN CI ENGINE 3. 1. Methods to reduce emission in CI engine 3. 1. 1 Particulate filter. Particulate filters are highly effective in the elimination of particulate matter (PM10) or soot from diesel exhaust. It has a variety of filter coatings and designs, depending of the engine application and duty cycle. . 1. 2. Selective catalytic reduction Selective Catalytic Reduction of NOx (generally abbreviated with SCR deNOx) is a very pow erful technology to reduce the NOx emission and fuel consumption of truck and passenger car diesel engines. The European truck manufacturers starting in October 2005, when EURO-4 emissions legislation enters into force, will introduce SCR deNOx on a large scale. With SCR deNOx a 32. 5% aqueous urea solution is injected upstream of the catalyst. Urea which converts to NH3 (ammonia) in the hot exhaust gases reacts with NOx to form harmless N2 and H2O. The urea quantity needs to be precisely dosed as a function of the engine NOx output and the catalyst operating conditions. 3. 1. 3. Smoke Suppressant additives There are a number of additives, which are added in order to reduce the smoke from CI engine. HYDRAX ATH (hydrated alumina), HYDRAMAX (magnesium hydroxides and hydroxy-carbonates), CHARMAX LS (low smoke), CHARMAX LS ZST & LS ZHS (zinc stannates & zinc hydroxystannates), CHARMAX AOM & MO (ammonium octamolybdate & molybdic oxide), CHARMAX ZB200 & ZB400 (zinc, magnesium, and calcium borates) etc. This reduces the amount of smoke produced by various chemical reactions. The smoke produced can also be controlled by deairating, maintenance, catalytic mufflers, fumigation etc. 3. 1. 4. Control of odour It is very difficult to estimate the odour produced by the diesel engine because the lack of standard tests has not allowed much work to be done in this direction. Catalytic odour control system muffler and or catalyst container are under development and it has been found that certain oxidation catalysts if used under favorable conditions reduce odour intensity. But the tests are still going on. 3. 1. 5. Exhaust Gas and After treatment Modeling While the diesel (compression ignition) engine is more efficient than the conventional spark ignition engine from a thermodynamics standpoint, it has the potential for a large negative environmental impact. The lean combustion of these devices provides the perfect environment for the production of NOx; relatively high temperatures and abundant oxygen. In addition, direct injection of fuel into the combustion chamber creates rich fuel pockets that can cause the formation of particulate matter (soot). Recently these emissions have come under increased scrutiny from the Environmental Protection Agency (EPA). Their radical nature (smog) in the atmosphere and subsequent health hazards has caused the EPA to act to increase the regulation standards for both 2007 and 2010. Unlike the three-way catalysts currently used on spark-ignition based platforms, diesel after treatment systems will not utilize one device for all problematic emissions. Instead, devices are targeted to take care of only one or a few issues at a time. For instance, Diesel Particulate Filters (DPF) might take care of the particulate matter while a Diesel Oxidation Catalyst (DOC) will eliminate the CO and HC and a Lean NOx Trap is used for the NOx emissions. Until now, diesel engine manufacturers have been able to meet the legislation though in-cylinder technology. The proposed EPA legislation has caused the diesel industry to work on finding cost-efficient after treatment technology while still looking in-cylinder for improvements. 3. 2. Modification in CI engine to reduce emission 3. 2. 1. Commercial vehicle emission control Several improvements are needed. These could be achieved through redesigning of engines and application of new technologies:  · Improvement in fuel injection system and use of higher injection pressure. . . Common rail system unit injections instead of multi-cylinder fuel injection pumps.  · Electronically controlled injection system to provide variable injection timing with good dynamic response to engine load, speed, and temperature.  · Improved cylinder head design, inlet port, re-entrant combustion chambers.  · 4-Valve system to improve volumetric efficiency and provide better mixing of fuel and air. Turbo-charged and Turbo-charged aftercooled engines to provide higher specific power, better fuel economy, and less emission pollution.  · After-treatment, particulate traps, and catalytic converters. 3. 2. 2. Passenger Car Diesel Engine In India, Indirect Injection (IDI) diesel engines are commonly used in passenger cars. Due to the pricing policies of fuels, the running c ost of diesel cars is lower than those of petrol cars. Diesel engines are popular for taxis, most of which are retrofitted by diesel engines. Private cars with OE diesel engines are also in demand. Major directions for engine development to control different pollutants are as follows:  · HC emission control requires, – low sac volume nozzles; – Complete combustion of injected fuel; – minimum lube consumption.  · NOx emission control is helped by, – cooling of intake air before entering the engine; – Retarded combustion; and – Moderate air motion.  · Particulate emission control is helped by, – high injection pressure; – fine fuel atomization; – intensive air motion; – high excess air; and – minimum lube consumption. 4. EMISSION CONTROL NORMS IN SI AND CI ENGINE The first Indian emission regulations were idle emission limits which became effective in 1989. These idle emission regulations were soon replaced by mass emission limits for both gasoline (1991) and diesel (1992) vehicles, which were gradually tightened during the 1990’s. Since the year 2000, India started adopting European emission and fuel regulations for four-wheeled light-duty and for heavy-duty vehicles. Indian own emission regulations still apply to two- and three-wheeled vehicles. 4. 1. Emission control norms in SI engine. Table. 4. 1: EMISSION CONTROL NORMS IN SI ENGINE Level of Emission | 2/3 Wheelers ## | 4 Wheelers | |Norms | | | | | 2-Stroke | 4-Stroke | 4-Stroke | | |* Intake, exhaust, | |* Intake, exhaust, | | |combustion optimization |* 4-Stroke engine |combustion optimization | |Euro I /India 2000 |* Catalytic converter |technology |*Carburetor optimization | | |* Secondary air injection |* Hot tube |* Fuel njection | |Euro II / |* Catalytic converter |* Seco ndary air |* Catalytic converter | |Bharat Stage II |* CNG / LPG |injection |* Fixed EGR | | |(3 wheelers only) |* CNG / LPG |* Multi-valve | | | |(3 wheelers only) |* CNG/LPG | | | | |* Fuel injection +catalytic | | |* Fuel injection |* Fuel injection |converter | | |* Catalytic converter |* Carburetor+ |* Variable EGR | |EuroIII/ Bharat Stage | |catalytic converter |* Variable valve timing | |III | | |* Multi-valve | | | | |* On-board diagnostics system | | | | |* CNG/LPG | | | | |* Direct cylinder | |Euro IV / |* To be developed |* Lean burn |injection | |Bharat Stage IV | |* Fuel injection+ |* Multi-brick | | | |catalytic converter |catalytic converter | | | | |* On-board diagnostics system | ## Euro norms are not applicable for 2 / 3 wheelers in India 4. 2. Emission control norms in CI engine | | | |Level Of Emission Norms Technology Options | | | · Retarded injection timing | | | · Open/re-entrant bowl, | |Euro I / India 2000 | · Intake, exhaust and combustion optim isation | | | · FIP~700-800 bar, low sac injectors | | | · High swirl | | | · Naturally aspirated | | | · Turbocharging | | | · Injection pressure > 800 bar, moderate swirl | | | · High pressure inline / rotary pumps, injection rate control | |Euro II / | · VO nozzles | |Bharat Stage II | · Re-entrant combustion chamber | | | · Lube oil consumption control | | | · Inter-cooling (optional, depends on specific power), | | | · EGR (may be required for high speed car engines) | | | · Conversion to CNG with catalytic converter | | | · Multi valve, | | | · Low swirl – high injection pressure > 120 bar | | | · Rotary pumps, pilot injection rate shaping | | | · Electronic fuel injection | |Euro III / | · Critical lube oil consumption control |Bharat Stage III | · Variable geometry turbocharger (VGT) | | | · Inter-cooling | | | · Oxycat & EGR | | | · CNG/LPG | | | · High specific power output | | | · Particulate t rap | | | · NOx trap | | | · On board Diagnostics system | |Euro IV / | · Common rail injection-injection pressure>1600 bar | |Bharat Stage IV | · Fuel Cell | | | · CNG/LPG | On October 6, 2003, the National Auto Fuel Policy has been announced, which envisages a phased program for introducing Euro 2 – 4 emission and fuel regulations by 2010. The implementation schedule of EU emission standards in India is summarized in Table 4. 3 The above standards apply to all new 4-wheel vehicles sold and registered in the respective regions. In addition, the National Auto Fuel Policy introduces certain emission requirements for interstate buses with routes originating or terminating in Delhi or the other 10 cities. For 2-and 3-wheelers, Bharat Stage II (Euro 2) is be applicable from April 1, 2005 and Stage III (Euro 3) standards would come in force preferably from April 1, 2008, but not later than April 1, 2010. Table. 4. 3. INDIAN EMISSION STANDARDS | Indian Emission Standards (4-Wheel Vehicles) | | Standard | Reference | Date | Region | India 2000 |Euro 1 |2000 |Nationwide | |Bharat Stage II |Euro 2 |2001 |NCR*, Mumbai, Kolkata, Chennai | | | |2003-04 |NCR*, 10 Cities†  | | | |2004-05 |Nationwide | |Bharat Stage III |Euro 3 |2005-04 |NCR*, 10 Cities†  | | | |2004-10 |Nationwide | |Bharat Stage  IV |Euro 4 |2010-04 |NCR*, 10 Cities†  | * National Capital Region (Delhi) Mumbai, Kolkata, Chennai, Bangalore, Hyderabad, Ahmedabad, Pune, Surat, Kanpur and Agra The above standards apply to all new 4-wheel veh icles sold and registered in the respective regions. In addition, the National Auto Fuel Policy introduces certain emission requirements for interstate buses with routes originating or terminating in Delhi or the other 10 cities. For 2-and 3-wheelers, Bharat Stage II (Euro 2) will be applicable from April 1, 2005 and Stage III (Euro 3) standards would come in force preferably from April 1, 2008, but not later than April 1, 2010. Emission standards for new heavy-duty diesel engines—applicable to vehicles of GVW > 3,500 kg—are listed in Table 4. 4. Emissions are tested over the ECE R49 13-mode test (through the Euro II stage). Table 4. 4 | |EMISSION STANDARDS FOR DIESEL TRUCK AND BUS ENGINES, G/KWH | |Year | Emission standards for light-duty diesel vehicles (GVW ? 3,500 kg) are summarized in Table 3. Ranges of emission limits refer to different classes (by reference mass) of light commercial vehicles; compare the EU light-duty vehicle emission standards page for details on the Euro 1 and later standards. The lowest limit in each range applies to passenger cars (GVW ? 2,500 kg; up to 6 seats). |Table 4. | |EMISSION STANDARDS FOR LIGHT-DUTY DIESEL VEHICLES, G/KM | |Year | The test cycle has been the ECE + EUDC for low power vehicles (with maximum speed limited to 90 km/h). Before 2000, emissions were measured over an Indian test cycle. Engines for use in light-duty vehicles can be also emission tested using an engine dynamometer. The respective emission standards are listed in Table 4. 3 |Table 4. 6 | |EMISSION STANDARDS FOR LIGHT-DUTY DIESEL ENGINES, G/KWH | |Year | Emission standards for gasoline vehicles (GVW ? ,500 kg) are summarized in Table 5. Ranges of emission limits refer to different classes of light commercial vehicles (compare the EU light-duty vehicle emission standards page). The lowest limit in each range applies to passenger cars (GVW ? 2,500 kg; up to 6 seats). |Table 4. 7 | |EMISSION STANDARDS FOR GASOLINE VEHICLES (GVW ? 3,500 KG), G/KM | |Year |Reference |CO |HC |HC+NOx | |1991 |- |14. 3-27. |2. 0-2. 9 |- | |1996 |- |8. 68-12. 4 |- |3. 00-4. 36 | |1998* |- |4. 34-6. 20 |- |1. 50-2. 18 | |2000 |Euro 1 |2. 72-6. 90 |- |0. 97-1. 70 | |2005†  |Euro 2 |2. 2-5. 0 |- |0. 5-0. 7 | |* for catalytic converter fitted vehicles | |†  earlier introduction in selected regions, see Table 4. | Gasoline vehicles must also meet an evaporative (SHED) limit of 2 g/test (effective 2000). Emission standards for 3- and 2-wheel gasoline vehicles are listed in the following tables. |Table 4. 8 | |EMISSION STANDARDS FOR 3-WHEEL GASOLINE VEHICLES, G/KM | |Year |CO |HC |HC+NOx | |1991 |12-30 |8-12 |- | |1996 |6. 5 |- |5. 40 | |2000 |4. 00 |- |2. 00 | |Table 4. 9 | |EMISSION STANDARDS FOR 2-WHEEL GASOLINE VEHICLES, G/KM | |Year |CO |HC |HC+NOx | |1991 |12-30 |8-12 |- | |1996 |4. 0 |- |3. 60 | |2000 |2. 00 |- |2. 00 | CONCLUSION Efforts are being made to reduce the consumption of fossil fuels and maximize the utilization of environment-friendly energy sources and fuels for meeting energy needs. In India, the demand for oil for the transport sector is estimated to increase over the next decade. This sector is the largest consumer of petroleum products . Government is providing policy support, fiscal incentives and regulatory measures for development of alternative energy vehicles and fuels. Battery operated vehicles, fuel cell vehicles, hydrogen powered vehicles and bio-fuel powered vehicles have been identified in this context. The development activities of such fuels and vehicles need to be further encouraged particularly in view of their potential to protect the environment. Hybrid Electric Vehicles (HEVs) use the combination of engine of a conventional vehicle with electric motor powered by traction batteries and/or fuel cell. This combination helps in achieving both the energy and environmental goals. The deployment of a large number of this type of vehicles would help us in terms of environmental benefits, reduction of oil consumption and reduction in emissions. In hybrid electric vehicles propulsion, energy is available from more than one source of energy. The three configurations of HEV are series hybrid system, parallel hybrid system and split hybrid system. Fuel cells produce electricity, employing reaction between hydrogen and oxygen gases, electrochemically. Fuel cells are efficient, environmentally benign, compact, modular and reliable for power generation. Different type of Fuel cells currently under development are the Protons Exchange Membrane Fuel Cells (PEMFCs), Phosphoric Acid Fuel Cells (PAFCs), Molten Carbonate Fuel Cells (MCFCs),Solid Oxide Fuel Cells (SOFCs) etc. Hydrogen is receiving worldwide attention as a clean fuel and efficient energy storage medium for automobiles. Hydrogen can replace or supplement oil used in road transportation. Bio-fuel is an efficient, environment friendly, 100 per cent natural energy alternative to petroleum fuels9-10. In view of the potential of being produced from several agricultural sources and because of its low emission characteristics, bio-fuels in recent years are receiving a great deal of attention as a substitute to petroleum fuels. Ethanol and bio-diesel are the two bio-fuels which are being looked upon as the potential fuels for surface transportation. REFERENCES 1. www. howstuffworks. com 2. www. dieselnet. in 3. www. auto101. com 4. www. wikipedia. com 5. Mathur & Sharma. ; Internal Combustion Engine, Dhanpat rai publications. pp 774- 778 1. SEMINAR TOPIC FROM :: www. edufive. com/seminartopics. html