What does the Diesel engine emit??

In automobile, every engine that is being designed is therefore designed for a specific purpose. The diesel engine which is quite distinct in its variation also have some specifications. The emissions which this diesel engine emits to the environment, are these emissions of beneficial purpose to both the humans and the ecosystem respectively? This question should at least po in the mind of whoever sees ay diesel engine afterwards. This publication isn't meant for discrimination but instead edification and comparison between the diesel and gasoline engines.

There are certain various factors which in one way or the other affect the composition of the diesel engine exhaust fumes. Starting from the quality of fuel used, as products are being refined from crude oil, once the temperature has gotten to the required refining temperature of diesel, the type of diesel being produced would be based on the operating condition at that time. And many times, many suppliers and distributors and contractors also contribute badly to the ecosystem by adulteration with other substances to get a larger amount of what they want. Another factor is the type of engine which is being used, the different types also affects like the turbo charged engines, injector engine and the standard engine.

The current state of the engine, either it is faulty or properly maintained also contributes to this, the engine running temperature can also contribute greatly to the emissions. There are also some contributing factors which are major deciders also like the fuel pump settings, the workload demand on the engine as at the time, the state of the engine turning. These have I seen to contribute recently to the diesel engine emissions.

What do you think is present in the exhaust emissions of the diesel engines :- gases like polycyclic aromatic hydrocarbons, different oxides of sulphur, different oxides of nitrogen, carbon monoxide, water, nitrogen, carbon (soot), aidehydes. Depending on the fuel used and type of engine, the carbon soot content varies from 60% to 80%. This present in every exhaust emission of the diesel engine.

Amazingly, the diesel engine exhaust emissions also have three different colours of smoke. We all know what smoke means but in chemistry, it is a product of combustion meaning that wherever a combustion process occurs, there must be smoke.
a. White smoke (unburnt fuel and water droplets) :- This is produced when the engine is started from cold and it disappears when the engine warms up.
b. Black smoke (soot, oil and unburnt fuel) :- This indicates a mechanical fault with the engine.
c. Blue smoke (mainly oil and unburnt fuel) :- This duely represents a poorly serviced and a turned engine.

For the new week, we an start with this and then see what the next post would be all about, I was not able to find any pure diagrammatic expression or representation for the post today. I expect to see your opinions, views, perspectives.... Cheers!!!