Not exact matches
Diesels have long been regarded as among the dirtiest of power plants, a reputation that lingers because so many decades -
old examples of this durable
technology still work the roads today.
While
diesel technology is popular in Europe, it suffers in the US from the
old - school perception that it is still noisy, dirty, and unrefined.
The ad's not exactly scientific, and it's possible that the
old diesel car they found to test the big
diesel SUV against wasn't representative of the average
diesel vehicle of yesterday, but it's still a good way to illustrate visually - in a way that anyone can understand - that current
diesel technology has made big improvements.
But, because the nation still has more than 11 million
old diesel engines without proper emission control
technology, black carbon remains a serious health and environmental threat.
Making
diesel an even more attractive candidate for attack is the fact that reducing much of its black carbon emissions might simply be a matter of upgrading
old, soot - spewing engines with newer
technology.