PA’s Daniel Hirsch, an automotive expert, is quoted in the Financial Times in an article on car manufacturers finding solutions to reduce their diesel-powered vehicle emissions of harmful nitrogen oxides.
The article explains that Volkswagen reduced nitrogen oxides by using traps in cars prior to the VW scandal breaking last year. Then in October, VW said they would move to urea-based technology to cut diesel engines’ NOx emissions in Europe and North America.
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Daniel explains that fixing the VW cars in the US that have lean NOx traps instead of urea systems is difficult.
He goes on to say that installing urea tanks in all these cars – the most obvious way to bring the vehicles into compliance with US emissions rules – would be prohibitively expensive.