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Black smoke from car

Why is the Particulate Filter Required by Law?

13 July 2015, 14:57

When Diesel is burned in a combustion engine, much more soot is generated than by petrol-fuelled vehicles. Catalytic converters are fitted to all cars in order to make the gases which are generated in the combustion of fuel safer and more environmentally friendly, but these converters do nothing to stop particles of soot from being released into the atmosphere. This is why Diesel Particulate Filters have been introduced and made a legal requirement, to tackle the high levels of soot generated by diesel engines.

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The changes to European emissions regulations, which were announced in September 2009, brought in measures to control the amount of soot which cars co...

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Learn what a Diesel Particulate Filter is

What is a Diesel Particulate Filter?

01 July 2015, 11:32

In 2009, the ‘Euro 5’ standard was introduced, which led to the requirement for manufacturers to fit Diesel Particulate Filters in the exhaust systems of all diesel cars.

This doesn’t mean that cars built before 2009 don’t have DPFs installed too, many cars manufactured in the years leading up to 2009 were fitted with Diesel Particulate Filters in anticipation of the introduction of the ‘Euro 5’ standard.

The standards were introduced with the target of reducing soot emissions from diesel cars by 80%. The Diesel Particulate Filter does this by trapping the particles of soot, which are created by the combustio...

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