Research raises questions on diesel emissions in driving
Published 04/06/2014 | 02:30
ONE wonders if there isn't a sort of low-key 'anti-diesel' campaign gathering pace out there, writes Eddie Cunningham.
There is definitely a 'back-to-petrol' sentiment and it is one with which I can concur.
But now, I have no doubt there will be more questions raised about diesels in the wake of research published recently by Imperial College London and Emissions Analytics.
It claims that diesels emit around three times more NOx (nitric oxide and nitrogen dioxide) pollution in congested traffic than is permitted by European tests.
Given that the regulations already allow diesels to emit three times as much as petrol then trebling that is significant indeed – if scientifically true.
The scientists analysed the emissions of 12 diesel cars (all meet Euro5 standard under laboratory conditions).
Nick Molden, chief executive of Emissions Analytics, revealed: "We found that low-average-speed, stop-start driving dramatically increases levels of NOx emissions."
NOx is regarded as being harmful to the lungs.
After a normal urban/suburban test drive, the researchers concluded the impact of diesels on urban air quality in real-world conditions was substantially higher than the laboratory tests provided.
There will be a lot more about this.