Time to cut fumes from diesel cars

Harefield Gazette - - OPINION -

I must con­grat­u­late Anna Wil­liams on her in­formed com­ments (Gazette 4/1/2017). It just shows how choosy and se­lec­tive lo­cal politi­cians can be over some­thing of public con­cern.

To help fur­ther the de­bate on the pol­lu­tion is­sue I sub­mit the fol­low­ing. All four trans­port fu­els petrol, diesel, avi­a­tion paraf­fin and mo­tor­cy­cle two-stroke have ben­zene added. This when in use cre­ates CO2 emis­sions (green­house gases).

Nitrous ox­ide pol­lu­tion can largely be at­trib­uted to the growth of diesel emis­sions. There is no oxy­gen or ni­tro­gen in the fuel it­self. Car diesel en­gines with their tur­bos run so hot they burn the ni­tro­gen in the air re­sult­ing in nitrous ox­ide (NO2). Most buses and trucks con­form to le­gal lim­its, so why not cars? In cold weather this toxic level from diesel cars can go up by 11 times. Speed bumps also in­crease the toxic out­put lev­els.

One of the an­swers for re­duc­ing toxic emis­sions is lean burn en­gines. An­other is for politi­cians to put pres­sure on the main cul­prit that be­ing the big oil com­pa­nies and the ad­di­tives they put in the fu­els they process. We can all blame cars and planes but big oil is the one that needs to be held to ac­count.

WIL­LIAM C. F. PIERCE

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