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France Wants To Get Rid of Diesel Fuel
mrspoonsi sends this Reuters report:
France wants to gradually phase out the use of diesel fuel for private passenger transport and will put in place a system to identify the most polluting vehicles, Prime Minister Manuel Valls said on Friday. Next year, the government will launch a car identification system that will rank vehicles by the amount of pollution they emit, Valls said in a speech. This will make it possible for local authorities to limit city access for the dirtiest cars. "In France, we have long favoured the diesel engine. This was a mistake, and we will progressively undo that, intelligently and pragmatically," Valls said. About 80 percent of French motorists drive diesel-powered cars. Valls said taxation would have to orient citizens towards more ecological choices, notably the 2015 state budget measures to reduce the tax advantage of diesel fuel versus gas.
The issue is the particulate filters that are nowadays standards seem to be worse for your health: particles are so thin you can't see them anymore (hence no more belch smoke) but they're also so thin they can now enter your bloodstream more easily.
And modern diesel engines emit more NO2 than they used to.
So the bottom line is: invisible smoke doesn't mean it's better.
http://ehp.niehs.nih.gov/wp-co...
TL;DR
For example, Rushton et al. (Rushton et al. 2012) recently estimated that occupational DEE (Diesel engine exhaust) exposure in the United Kingdom was the third most important occupational contributor to the lung cancer burden after asbestos and silica exposure.
They estimate 6% of people dying of lung cancer do die because of diesel particles...
I'm sure they simply looked at the research of how well their car industry was doing and decided to come up with any reason to persuade people to buy new cars.
Diesel is a great fuel to use, very efficient, and the modern engines are not the oil-burners of the past, coupled with the catalytic converters in the exhaust, its often said the emissions are cleaner than the surrounding air in many cities. Certainly, diesel engines are cleaner than petrol ones, and if you consider the biodiesel that many are part running on (I understand the USA runs B20 diesel anyway - that's 20% biodiesel mix in all diesel fuel), even cleaner.
The issue is the particulate filters that are nowadays standards seem to be worse for your health: particles are so thin you can't see them anymore (hence no more belch smoke) but they're also so thin they can now enter your bloodstream more easily.
The issue is that there were always fine particulates, and they can't be trivially filtered out. But perhaps you missed it when we discussed here that gasoline engines produce as much soot as diesels, and it is all of the exceptionally-fine kind. Now that the big stuff is being filtered out of the diesel exhaust, all we have left is a relatively small amount of that PM2.5.
Ideally we'd do away with the ICEs entirely and eliminate all that crap, get down to worrying about how to eliminate it from the tires. But what's really pathetic is that we've had the technology at least since the 1800s to solve all of these problems. It's called electrified rail. With modern levels of traffic, it is worthwhile to have people in packets smaller than train cars, however, yet with the distances which must be covered the vehicles must have their own power storage. Current battery and self-driving vehicle technology permits just this particular use case. We have every piece we need to replace cars entirely with PRT save for the will, starting in the densest city centers and moving outwards in stages related primarily to the availabilty of parking.
AHEM. Back on topic. "invisible smoke doesn't mean it's better" is exactly why diesel is better than gasoline. And yet, soot isn't even the worst emission that cars produce! It's unburned hydrocarbons, also known as raw fuel. And by their nature, diesels which are running properly run lean all the time, that's just how they operate. That means they're burning their fuel. It also means they produce more NOx, but that's why diesels now have catalysts.
"You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
There is nothing in the article about France trying to kill diesel. The purpose of those measures are to get rid of OLD DIESEL CARS that are well known source of pollution (for the particules).