If you burn diesel, you will create the same amount of CO2, no matter what acronym you hang behind the combustion cylinder. No matter what you do, once created, CO2 will go into the exhaust stack.
Right now, particulate emissions is talked about, but the ugly truth is that the amount of particulates coming out of the stack are smaller than ........ the amount of particulates coming off the tires of a semi truck..... In many cases, the level of emissions is such that the air coming out of the stack is cleaner than what goes in. And now the bureaucrats want to improve on that?
Speaking of CO2, it seems to be politics as usual. Since 2005, the US has reduced total CO2 emissions by 14 %, and continues to decrease.
U.S. energy-related CO2 emissions fell 1.7% in 2016 - Today in Energy - U.S. Energy Information Administration (EIA)
Germany has signed all the treaties, spouts off about all the politically correct issues, but the dirty secret (pun intended) is that their CO2 emissions are actually going UP.
German CO2 emissions up despite 'energy transition'
So, if I may summarize, the US doesn't say the politically correct things, or signs the correct (and by correct, I mean meaningless) treaties, and just goes about increasing efficiency and reducing carbon emissions. The Euros talk a lot, have a lot of meetings, create a lot of regulations, and meanwhile their carbon emissions increase, reflecting all that hot air...........
Why do so many Americans hate European trucks?
Discussion in 'Trucks [ Eighteen Wheelers ]' started by snowbird_89, Jun 10, 2011.
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sdaniel, spyder7723 and Oxbow Thank this.
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This is a good example of why we get so irritated when someone like alpo makes a statement about dirty na engines.Cat sdp Thanks this. -
daf105paccar Thanks this.
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Not just for diesel, but for any fuel that contains carbon. Gasoline, propane, coal, diesel, natural gas (CNG/LNG), etc. They all contain carbon, and if you burn carbon you end up with CO2.
The main difference between fossil fuels and bio-fuels is that in bio-fuels plants removed CO2 just recently (last few years or decades) from the atmosphere, so it is considered CO2-neutral when burning the bio-fuel. A closed loop. It simply releases the CO2 that was taken out of the atmosphere back into it.
In fossil fuels, the plants removed CO2 from the atmosphere thousands of years ago, and this is released now when burning the fossil fuel.
In a way fossil fuels have the same closed loop, but the whole process (removing CO2 from the atmosphere untill releasing it again) took much much longer.
Antwerp (Belgium) introduced a low emission zone Februari 1 this year. Older cars and trucks, specially older diesel engined vehicles without a dpf are no longer allowed in the city.
First results/indications:
In the first half of this year the number of days in which the limits for particles in the air were exceeded was higher than in first half of 2016!
Banning the older diesels from the city most probably (certainly) had a positive effect and reduced the particles in the air, but it was more than offset by other sources, and influences of the weather (long dry spells, less wind).
And it is not just diesels that create the particulate emissions. Also gasoline engines, specially the new direct injection engines, produce particles.
In fact, in Europe (for passenger cars) there were NO limits for particle numbers up untill euro5 for spark-plug engines, only for diesels.
With the introduction of euro6 the limit for particle numbers for spark-plug engines is 10 times the limit for diesels! (to be reduced to the same limit as for diesel over a period of several years).
Gasoline engines may/will get DPF's too, or use a combination of traditional port injection (for low loads and during emissions testing) and direct injection for high loads.
Just look at the new Ford Ecoboost in the F150, or the new 2018 5.0. 2 injectors per cilinder. 1 in the intake port, 1 directly in the combustion chamber. -
Now, what is really, really, REALLY interesting is that even after bacteria developed the ability to recycle the carbon in lignite and so closed the carbon loop, atmospheric CO2 kept dropping steadily. As a matter of fact, we were rapidly approaching (again, speaking in units of geological time), to where the CO2 levels on earth reach the point that plant growth is limited. 100-400 million years from now, if the trend had continued, plant life would have become close to impossible. As an aside, the cause of this is the sequestration of CO2 by shelfish. Their deposits form limestone, which we then use for portland cement production, which produces about 5% of the man-made CO2.
So, even though the increase in atmospheric CO2 is going to change climate quicker than historical climate swings, the addition of CO2 to our atmosphere by man is actually going to prevent the extinction of the human species.
On the other hand, it is impossible to justify that level of emissions control on a combine on a 250 Ha wheat field, in Kansas, however, or on a long distance truck running across I-80 in Nevada or 84 in Idaho. You simply can't measure the pollution levels.W9onTime, Oxbow, spyder7723 and 1 other person Thank this. -
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i dont know exact comparison between epa2007 and euro5 but they are close.
those engines are really simple, without SCR they are on eco norm from 1990.
tatra even manage to build euro 5 engine with mechanical fuel pump without electronics and using air cooling.
at that time you needed DPF? EGR? VGT? common rail? expensive egr coolers.
scania tried to do this in europe, quite big fail. man was very close to release, at end they offered only small trucks, buses and on certain truck models in UK
if i can make parallel between your epa07 engines and scania egr engines it is than clear to me why do you want pre emission trucks.
some of those egr e5 were good, some make people bankrupt....Oxbow Thanks this. -
Let me give you some figures. The carbon footprint per capita of the US is 16.5 ton per year, for Germany 8.9 ton per year. The US is producing 12.2% of its electricity from renewable sources, for Germany that is about 35%. In fact there have been short moments that almost 100% of the electricity was produced by renewable energy.
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A pre-emission engine would be a Euro 0 engine in Europe, and Europe had this roadmap for cleaning up truck engines:
- Euro 1 - 1992
- Euro 2 - 1995
- Euro 3 - 1999
- Euro 4 - 2006
- Euro 5 - Oct 2009
- Euro 6 - 2014 (comparable with EPA 13)
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