A new car today produces 60-80% less pollution than a car in the 1960s, yet air quality has improved less than expected.
What are some possible reasons why cleaner exhaust has not* significantly reduced total emissions from cars?
Meant to say not instead of no, oops.
It is a complex equation.
On the one hand, the pollution that is [...]
I need sources for my research paper.
I have gone to the EPA, ALA, etc, but I don’t know where else to go.
I don’t think that ‘go to Google or the library’ helps at all, but thanks for your time, I suppose.
search on google or go to library
on the co’s it barly failed. and the car dose not have a egr valve what else could it be?
You most likely have two different issues to deal with.
CO is partially burned fuel, and is a sign of too much fuel for the air in the engine.
The causes can be —
1) Lazy or defective [...]
I’m looking for 5-10 yr old cars and truck that run on diesel that hold their value. I found a 05 Mercedes e320 CDI that is worth 250% of original value and a VW Jetta that is 164% original value. My husband asked me to do this search so I’m not sure what he is [...]
Hi. There has been a lot of talk here in Australia about the promised Emissions Trading Scheme (ETS), and many seem to believe it will hurt the average Australian consumer.
But I wonder why it has to. If govt decides it is going to tax Carbon intensive products and services, why can’t it simply take a [...]
i have a renault scenic 2004 number plate engine check light come on with check emission
anyone know what this is and what are the exact parts need to be change
thanks
Hi as above, although it is normally referred to as a toxic fume or Lamda sensor. These measure emissions going through your exhaust. It [...]
I did an emissions test and the fuel filler cap was leaking. Can this cause you to lose fuel?
No it can not. The leaking they are referring to with your fuel cap is air leaking out of it. All modern return style fuel systems are pressurized for emissions purposes. A leaking cap will reduce fuel [...]
The EPA (environmental protection agency) lists the automobile as the largest source of pollutants in the air, and that is the reason behind the emission testing in several states, based on federal standards.
To understand their position better, see the EPA web page, and this:
http://www.epa.gov/otaq/consumer/05-autos.pdf
If climate change is happening because we are producing too much CO2, how much does humanity have to cut back, in order to get to sustainable levels?
Excellent question. No one knows, because CO2 is recycled by complex natural system called the carbon cycle.
Here’s a graph showing what’s going on now.
http://scrippsco2.ucsd.edu/graphics_gallery/mauna_loa_record/mlo_record.html
The tiny [...]
In atmospheric chemistry ppm refers to ‘parts per million by volume’ so in essence 1 ppm = 10^-6 cu.metre
So V = 10^-6 cu.metres
Now use the ideal gas law (PV=nRT) to determine the number of moles (n) and multiply that by the average molecular weight of NoX to determine the mass.
This will give [...]
