A Brief Note On The Diesel Engine Exhaust Gas Emissions And Particulate Matters

A year before Charles and Frank made their first car, Rudolf Diesel patented the design for diesel powered combustion engine. He believed that this would revolutionize the industry, because diesel fuel harbored a higher concentration of energy per gallon (132×106 vs 155×106 joules, gasoline and diesel respectively; in terms of energy density). The problem is that the exhaust is typically dirtier due to the much oilier nature of the fuel.

The transport sector is one of the main global consumers of fossil fuel related energy in the world. Unfortunately fossil fuel is non-renewable source of energy and the production of oil has been fluctuating in the recent past. At the same time, combustion of petroleum related fuel release greenhouse gases such as carbon monoxide and carbon dioxide that destroy the ozone layer and result to further environmental degradation. Therefore to work

In the automotive world, efficiency and power are two elements of vehicle performance metrics that while important to many consumers and critics alike, appear to be elusive when in convolution with one another. In automotive history, good fuel efficiency equaled compromises in power and performance and vehicles with large displacements and torque usually had worse gas mileage. The exception to this rule were diesel engines, which managed to combine better efficiency than many four-cylinder gas engines while providing very high torque number for better performance. The main drawback that diesel’s faced was due to their stigma of being dirty, as they emitted more greenhouse gases including nitrous and sulfur oxides. Coupled with the stricter emissions that many states began to implement, primarily overseen by the EPA, it became harder for car manufactures to certify diesel engines for emissions while maintaining high fuel economy and power output figures. The emission control hardware and software in diesel vehicles also came at a high price and with increased complexity, both unwelcoming additions for any car company wanting to mainstream diesel’s.

Automobile pollution is a huge issue in the US today. Most people say that diesel engines have the most impact on global warming, air pollution, etc. The truth is, gasoline engines are just as pollutant.

I take this opportunity to express my sincere thanks and deep gratitude to all those people who extended their whole hearted co-operation and have helped me in completing this project successfully.

When someone mentions diesel, many people still have the image of a loud and obnoxious machine that is hard to start in the cold weather. This may have been true twenty to thirty years ago, but could not be further from the truth today! With all of the advancements in engine and emissions technology; diesel has become the new standard in fuel economy and power while still maintaining strict pollution standards as mandated by the EPA. As C.J. Baker explained here, “Diesel development has come a long way, but the public perception of diesel is lagging 25 years behind...but the bottom line is still the same. Modern diesels are quick, powerful, quiet, easy to start in the cold, and don't smoke.”(Baker 2). Therefore I have

The world we live in is surrounded by diesel engines. They are on the freeways, railways, airways, and are one of the leading electricity producers in the world. They are also becoming more popular in automobiles. These engines are efficient and reliable and they are getting very sophisticated. However, the physics behind these engines has not changed.

%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

The ever increasing carbon emissions from the automobiles all around the world has forced the incorporation of novel , more sustainable means of non-conventional fuels for the automobiles like the hybrid cars , solar vehicles , the use of gasohol and alcohol based fuels is also considered as an alternative for the conventional fuels and also the development of solar electric hybrid vehicle. There are a lot of possibilities and feasible solutions for lowering the carbon emissions from vehicles.

Figure-1 shows an image of a three way catalytic converter block diagram that is comprised of two types of catalysts. Whereby these catalysts don’t take place in any reactions happening but only triggers them. The diagram shows how less harmful gases are produced to the atmosphere by the reduction catalyst and oxidation catalyst.

Gasoline evaporates as the temperature rises during the day, heating the fuel tank and venting the gasoline into the atmosphere.

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

In this an attempt made to reduce NOx emissions by SCR technology. In this work, we used Zeolite ZSM-5 as catalyst which was assisted by urea injection in the exhaust tail pipe. It has been observed that 10 to 12% of NOx was reduced compared to existing engine set-up.

Road transportation providers have adopted several innovations that have lowered the environmental impact of this transportation mode. The adoption of clean diesel technology by the industry has resulted in significant reductions in fuel use and emissions by trucks. This innovation in diesel engine

Automobiles have made great contribution to the growth of modern society and have satisfied many needs for mobility in everyday life. The automobile and other related industries play an important role in governing world’s economy and affect every level of population. IC engine is the backbone of automobile sector and uses fossil fuels as source of energy. Modern transportation system heavily relies on fossil-fuel based IC engines but due to toxic emissions in the form of carbon dioxide (CO2), carbon monoxide (CO), nitrogen oxides (NOx) and unburned hydrocarbons (HCs) etc. in a large amount has caused environmental pollution, global warming and badly affected the ozone layer. Usage of large number of automobiles around the world has caused and continues to cause serious problems for environment and human life.