Diesel cars produce more toxic emissions than trucks and buses, EU study says
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Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#2I think since they are used more, and burn more fuel generally more total emissions come from heavy commercial vehicles, so at least the more rigorous testing was introduced in the right sector first.
This is also part of the reasoning one of the Tesla founders used when they moved on to creating hybrid drivetrains for trucks with Wrightspeed.
Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#3Part of the problem is that basically the closer you run the diesel engine to its optimum mpg-wise, the more NOx it emits.
So, when you are trying very hard to make engines more efficient to get impressive mpg numbers, you also end up generating more NOx (Which you can then get rid of using urea, which I think is the preferred option in trucks and buses - think AdBlue or whatever it is called when used for cars.
Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#4One of the reasons, I am not proud to be a German, since it was/is my government (shame on them all!) that actively prevents real progress in the area of emission reduction of cars.
Reality is, that ADAC or TÜV years ago already warned, that EURO 6 cars may produce even more emissions than EURO 5 cars. So, decades of EU environment politics where just Potemkin villages to please German car producers.
Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#5Part of the problem is that basically the closer you run the diesel engine to its optimum mpg-wise, the more NOx it emits. So, when you are trying very hard to make engines more efficient to get impressive mpg numbers, you also end up generating more NOx (Which you can then get rid of using urea, which I think is the preferred option in trucks and buses - think AdBlue or whatever it is called when used for cars.
The other part is, that producing cleaner Diesel cars is just more costly -- that was the main reason for VW to cheat.
Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#6Part of the problem is that basically the closer you run the diesel engine to its optimum mpg-wise, the more NOx it emits. So, when you are trying very hard to make engines more efficient to get impressive mpg numbers, you also end up generating more NOx (Which you can then get rid of using urea, which I think is the preferred option in trucks and buses - think AdBlue or whatever it is called when used for cars.
The other part is, that producing cleaner Diesel cars is just more costly -- that was the main reason for VW to cheat.
I wonder how my old diesel (1998 Toyota Land Cruiser 1KZ-TE, 3.0l I4 TDi) would fare when compared to a modern diesel.
Obviously, it would soot orders of magnitude more - but I wouldn't be surprised if the NOx emissions were surprisingly low, seeing as efficiency was way down on Toyota's list of requirements; they just made a bigger fuel tank.
It was designed to just work(tm) - almost regardless of what happened to it. Gas mileage? Not as much.
Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#7Have a look at cargo ship emissions and then think.
Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#8Have a look at cargo ship emissions and then think.
Which is why lots of very smart people spend lots of money figuring out better ways to power commercial shipping; gas turbines for instance - and even sails may make a comeback.
The problem with cars (in particular diesel ones) is that their pollution causes problems locally, too. That is less of an immediate concern if you're plying the Yokohama-US Pacific coast route.
Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#9But, they have all those blue and green emblems on the back. :/
When I see these cars getting floored and I see the dark grey/black smoke coming out I often wonder, this must be super healthy for all of us.
Re: Diesel cars produce more toxic emissions than trucks and buses, EU study says
#10Have a look at cargo ship emissions and then think.
Which is why lots of very smart people spend lots of money figuring out better ways to power commercial shipping; gas turbines for instance - and even sails may make a comeback. The problem with cars (in particular diesel ones) is that their pollution causes problems locally, too. That is less of an immediate concern if you're plying the Yokohama-US Pacific coast route.
I always liked the kite idea: http://www.skysails.info/english/skysails-marine/skysails-pr...