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Diesel Cars Produce More Toxic Emissions Than Trucks and Buses, EU Study Says (theverge.com)
Modern diesel cars produce more toxic emissions than trucks and buses, according to European researchers. That's because heavy duty vehicles in the EU have much stricter regulations than cars, and so even if they meet lab tests, cars end up producing much more nitrogen oxides (NOx) when driven on actual roads. From a report: The new report, released by the International Council on Clean Transportation (ICCT), shows that trucks and buses tested in Germany and Finland emitted about 210mg NOx per kilometer driven, less than half the 500mg/km produced by diesel cars that meet the highest "Euro 6" emission standards.
Second sentence of summary:
I Know commenting on the headline is fashionable, but not even getting to the second sentence is a bit extreme even for /.
"I do not agree with what you say, but I will defend to the death your right to say it"
just my own very sensitive nose can barely tell a diesel car in front vs trucks/buses I must pass(or stop) or have breathing trouble... Didn't read the referenced post but if it's true at all it must be pound for pound? Cause diesel cars dont' even come close to being as offensive.
Nitric Oxide (NO) is colorless and odorless. Nitrogen Dioxide (NO2) has a reddish brown color and a pungent smell. So if the majority of the NOx emmissions are Nitric Oxide you couldn't smell it even if you wanted to.
Green facism?... Surelly some wimpy Social Justice Warriors cause you worry?
In my time there were hardcore Maoistes, Trotskistes and Stalinists, those I was scared of, now these guys going on a gluten free diet, meh.
Screaming quotas, lower emmission, more recycling can be annoying, but facism?
Now if you want to breathe NOX gases, take some lead compounds into your system, drink water with benzene, please do.
But please, do it quickly. You need to increase the dosage it is clearly not working well enough.
Technically yes. In practice no. Passenger cars with Selective Catalytic Reduction (SCR) systems can apply for low temperature operation exemptions. Basically, the system losses efficiency at low temperatures, so the automakers are allowed to turn it off as not to waste the SCR fluid. Some of these exemptions are ridiculous, one Mercedes (if I remember correctly) vehicle is exempt from turning the SCR on at ambient temperatures below 15 C.
Most of the diesel passenger vehicles are exempt below 5 C, so especially in the winter there is almost no NOx emissions control on any of these vehicles. If you are a heavy duty vehicle, there is no exemption. You have to put an electric heater on your exhaust system to keep it at operating temperature. Also, as there are very few labs that can accommodate large truck testing the testing, the certification test for heavy duty trucks is on the road with a portable emissions measurement system.
The whole issue is that a bug truck hauling 70-80,000 pounds doesn't care if it needs a 100 pound heater or a 200 pound urea tank to bring emissions down. Space and weight are not an issue. Much more difficult to do on a 3,000 pound passenger car.