Are we about to see the death of diesel?

Friday, November 4th, 2016 - autos, cars, motoring, news

Source : Are we about to see the death of diesel?

The VW emissions scandal could see a fall inside the popularity of diesel engines, along with in which is usually no bad thing reckons Hilton Holloway


I’m as much to blame as anyone. Right back in 1998 I got my hands on one of the first super-punchy Mk4 Volkswagen Golf diesels. in which thing was a riot: an ordinary hatchback in which had huge in-gear pace along with seriously impressive fuel economy. along with sometimes both at the same time.

I well remember a Boxing Day trip to Wymondham in Norfolk, up a deserted A11. The road is usually punctuated by roundabouts, the hyper-diesel’s favourite territory. Three-up, I was being trailed by a chap in an original Audi S4 Avant, which was no mean performer back then.

although the hyper-Golf left the stumbling Audi for dead at every roundabout exit, where the VW’s mid-range punch was almost comical. in which was clearly the future: a compact, light, hatchback with serious pace along with high 40s economy.

Six years later I was scrabbling around inside the gutters of Piccadilly, central London. I was photographing the kerb stones which appeared to be thickly coated in a graphite-like substance. the idea was, in fact, the particulates being emitted – mainly – by London’s ageing diesel bus fleet.

What I couldn’t see – thought those with sensitive chests might have felt – was the nasty nitrogen oxides also being emitted by the diesel engines.

In 1994 the newly-formed Transport for London had introduced the infamous ‘Congestion Charge’, basing the idea on the level of CO2 emissions by vehicles. along with inside the global warming panic, the strict meanings of CO2 ‘emissions’ along with ‘pollution’ had been dangerously – possibly deliberately – welded into one.

High-CO2 vehicles were ‘polluting’. Reducing CO2 ‘emissions’ had to be a national along with local priority. In fact, as I pointed out on many internet forums, replacing London’s 24,000 black cabs with 24,000 petrol Range Rovers might massively improve central London’s air quality.

Living on a busy road inside the capital, I had come to realise in which the layers of fine dirt along with dust on the front door along with on the window sills was not just the back wash of living in city, the idea was mostly particulates, fired by the exhausts of vans, trucks, taxis along with many older cars.

the idea has taken a ridiculously long time for law makers, civil servants along with the media to wake up to the threat by diesel engines in which are used in stop-start conditions.

Scientific studies showing London’s Oxford Street, central Oxford, Manchester along with Birmingham were among the most polluted inside the earth seem to be published to no effect.

Certainly the amount of pollution put out by diesel engines has fallen dramatically inside the last few years, put there are plenty of scientists who are concerned in which the newest engines are emitting ever smaller particulates, which, ironically, are so tiny they might get lodged deep inside the lungs along with even pass into the bloodstream.

Recent real-world tests by Emissions Analytics – revealed inside the Sunday Times with great fanfare although little political effect – show in which even the most modern diesel engines can emit far more pollution than their laboratory rating suggests.

Anything by regular stop-start traffic to speed bumps can, for example, cause peaks in NO2 nitrogen oxides emissions. The latest estimates are in which there are 9500 premature deaths inside the capital alone by exposure to pollution.

along with then’s there’s the mostly unexplored issue of what happens as diesel engines age along with internal components – such as the injectors – wear out. We’ve all seen clouds of black smoke by those tatty 55-plate Mondeos along with Astras. along with in which’s not evening considering the damage being done by the huge numbers of hard-driven along with high-mileage commercial vehicles.

although the VW diesel test scandal inside the US might the be final push in which lines up all everything we know about diesel pollution along with starts the avalanche of public opinion in which marks the beginning of the end for these engines.

Certainly, some EU6 diesel engines remain ‘clean’ even in city conditions. along with Volvo’s use of computer controlled Denso diesel injectors means, the company claims, in which the engine will remain inside EU6 pollution parameters for its whole life.

although diesel engines are increasingly complex along with expensive to manufacture. along with units by the later 2000s are today proving expensive in later life as dual mass flywheels, particulate filters along with diesel fuel pumps fail expensively.

Ask a London mini cabber: the use of low-pollution along with ultra-reliable hybrid petrol Priuses along with Insights is usually today common for people who drive for a living.

Weaning us off diesel won’t be easy. The economy is usually unbeatable, the in-gear performance addictive along with the motorway pace undeniable.

The European Union along with UK government might also have to untangle CO2-based motoring taxation. Fuel bills might rise, although petrol turbos – especially the upcoming 48V hybrids (which are relatively inexpensive along with highly effective) – are increasingly convincing.

Selling someone a 50mpg Golf 1.4 TSI will be no hard thing, although shifting commercial traffic away by diesel is usually a much bigger task. Here we have to take a lead by East Asia where the use of clean-burning gas is usually common for taxis, buses along with tiny along with medium commercial vehicles.

Sure, the idea’s a huge change. although once the US authorities get stuck into measuring the real-world pollution by oil-burning engines, the resulting global publicity could finally usher inside the end of the great dash for diesel.

by via Autocar RSS Feed

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