Recent Trends in Catalytic Converter for Automobile: A Review Approach
Abstract: Automobile Emission is the major contributor to the air pollution .A technology is needed to control auto exhaust pollution problem so as to meet the emission standards set up by government legislation and the upcoming more stringent norms. The catalytic converter is successfully utilized to control air pollution from vehicle emissions. Catalytic Converter are manufactured based on platinum, palladium and rhodium catalyst but they are very much costly and rarely available. Recent work in catalytic converter are, instead of using these material non-noble material are also used as a catalyst, which are easily available, operated at lower temperature, cheap, and act as a catalyst. Copper, nickel and zinc are some option to used as non-noble material and other material are also used as non-noble metal catalyst.
Key Words: Air pollution; Catalytic Converter; Emission Standard; Non-noble Material; Noble metal; Automobile; Technology.
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Introduction:
The Automobiles are a necessary requirement, they have made living easy and convenient, they have also made human life more complicated in case of toxic emissions and an increased risk of accidents. Due to non-perfect combustion control in the combustion chamber, the exhaust contains significant amounts of pollutants which need to be transformed into harmless compounds[3].These pollutants have negative impact on
The transportation industry has continued to grow from the first production of the car in the 1990s by Karl Benz. Since this time there have been an outstanding number of model cars, airplanes, buses, motorcycles and scooters, and many other transportation vehicles that uses the standard type of fuel, gasoline. Society as a whole has yet to realize the harmful effects gas powered vehicles have on our ecosystem. Unfortunately, due to lack of this information, the overwhelming price difference between the types of transportation, and convenience, this ever-growing problem my never change until it's too late.
Introduction Automobile usage has increased in America and elsewhere in the world. In a research done by Sutherland, J., et al. (2004) “The US has a contributed to 200 million passengers in cars and light truck over the past few years. Further in 1990, studies showed that US cars increased six times faster than human population. The leaders in the automotive industry must adopt some key elements to ensure success in this fast-moving environment. They must invest in knowing their markets, building brands, adapting product strategies and taking long-term view on their goals and objectives. This paper outlines some of the key factors which should be considered. Environmental factors automotive designers and engineers have always said the main threats in the American Automotive industry are the environmental factors such as fuel economy and the clean air regulations. Automotive Emission posed different problems than manufacturing discharges such as coal smoke. Increased fossil-fuel emission has resulted from the million car increase. Irritation smog, which is comprised of carbon monoxide, hydrocarbons, sulfur oxide and other various chemical mixtures are cited in major cities such as Los Angeles. These auto emissions are also said to cause headaches, visual pollutions, contribute to lung cancers and other respiratory disease. In the end, the engineers have designed cars that are better environmental performers, cost effective and fuel efficient to reduce the environmental
With the supply of fossil fuels steadily declining, gas and oil is becoming harder to harvest which means it is getting more expensive. Fossil fuels take millions of years to be naturally produced, yet each person burns gallons of gas per day (Maehlum par. 5). Though fossil fuels are produced naturally, when burned they release nitrogen oxides gases into the atmosphere, which contributes to the formation of smog and acid rain. According to the EPA, major sources of these nitrogen oxide emissions come from cars and trucks, coal-fire powered plants, large industrial operations, and ships and airplanes (EPA par 3). By reducing the number of gas powered cars on the road, we can reduce the amount of harmful chemicals we are releasing into our atmosphere.
As a result of EPA regulations, today’s diesel engines are more efficient than ever before seen in large and midsized trucks. Certain regulations restrict truck owners from using certain truck models, because of excess diesel emission. Increasing drastically as technology improves, cars and trucks produce less and less diesel exhausts and emissions. “But because diesel engines can operate for 30 years or more, millions of older, dirtier engines are still in use,” (Epa.Gov). Reducing exposure to diesel exhaust from these engines is especially important for the preservation of human health and the environment. According to the EPA, the United States Environmental Protection Agency,
Due to advancement in technology, there has been an increase in emission of pollutants from the vehicles. Electric cars do not produce pollutants which are very important for the cities to stay green and pollution free as the air quality has deteriorated a lot.
Fuel efficiency in automobiles has become a topic of much discussion in recent years in the United States. This is due largely to the environmental devastation that fuel emissions cause, but it is also sparked by the rising fuel costs. Making cars with high fuel efficiency not only saves consumers money, but also will drastically reduce the pollution that is caused by emissions. Today automakers are putting a tremendous amount of effort into making their cars more fuel efficient, both to meet government regulations and to make their car more appealing to the consumer.
Environmental concerns have been raised from time to time because of the dependency on the gasoline-fueled engine as the chief auto powertrain technology. This has resulted in exposing many automobile users to unpredictable prices of fuel. These issues were, however, the reason for
The expertise used to test automobiles could not fully and accurately describe the limitations of driving. Real driving is much more hostile and wide-ranging than analysis technologies could then excuse for always. The tests must measure exhaust emissions in a strong and repeatable method. While the tools we use for testing have developing immensely over the years, the challenge to be ever more self-motivated and precise still remains.
“Automobiles have a large impact on the quality of our environment and public health. Automobile use affects virtually every aspect of environmental quality - including noise levels, air quality, water pollution, and urban sprawl. Ninety percent of the environmental impact of automobiles occurs through the operation of the cars: about 10 percent from the production, raw materials and disposal of
A way to approach the elimination of carbon monoxide from car exhaust is through the use of organometallic catalysts. Through the use of a catalyst, a reaction can occur at a faster rate and at lower activation energy. Said catalysts serve are of great commercial interest because they essentially convert simple mole-cules into more complex ones.6 Unlike homogeneous catalysts, heterogeneous catalysts are not in the same phase as how the reac-tion is occurring. Because of this, the catalysts are considered to be cheaper and easier to obtain. It is also considered more envi-ronmentally friendly to use.6-7
%De*ing# +ei pg ,& 'he reduction of ()x# %(itrogen )xide&# is themost common reason for applying the EGR emissions system to the commercial diesel engines#this emission system does ha"e a few other purposes as well !or instance# it will reduce the needfor high load fuel enrichment# aids "apori-ation of li*uid fuels# and impro"es the ignition system 'he harmful exhaust gas has become a problem with today.s atmosphere# due to the fact of the high thermal efficiency in the diesel engine causing a mass pollution of exhaust gas 'his is where the EGR has an important role in the elimination of exhaust gas# since there is a high preference of direct in/ection engines for commercial "ehicles In order to determine the effecti"eness of the EGR emission system# there had to be
When people hear the phrase “car exhaust” they think of the smoke that emits from their car’s tailpipe. The smoke could be adding to the slow death of our planet due to the fact that the exhaust is a dangerous soup of chemicals. I will showcase the three main threats directly linked to the chemicals in these fumes and their effects on the environment. Additionally, I will cover how the United States Government has reacted to these threats through regulations and other initiatives.
Figure 1 shows a schematic line diagram of the turbulence modeling of the exhaust system of the car to reduce the exhaust emissions. The various components of the improved exhaust model includes the exhaust header of the car, turbulence unit, catalytic converter which basically changes the chemical composition of the exhaust emission gases, resonator, muffler, tail pipe etc. However, the entire setup includes the engine, fuel tank, radiator, self starting key, exhaust system etc. Several flanges has been provided to clamp the turbulence unit in between the exhaust pipe trailing from the exhaust header and the catalytic converter. Different designs of the turbulence model unit has been clamped one after another in order to take the emission readings from each and every model. The output emission of exhaust gases can be measured by vehicle emission test equipment. The whole setup has been mounted on a platform to make it portable as the unit is
Emission analysis was carried out in an authorized pollution testing center. Test was conducted in two sections. First emission characteristics of the vehicle was studied. In the next section oxyhydrogen kit was connected to the vehicle and same procedure was followed. A comparison between before and after connection of the oxyhydrogen kit is tabulated in table 3.