Quote:
Originally Posted by Ritchy
its all about emissions these days, but i think its a bit daft theyre looking at whats coming out the exhaust, but they arent really looking at the amount of extra energy, engineering, expense and emmisions that come into making these systems, egr systems really dont make that much of a difference, however for example on the transit they are forever going wrong...think of the amount of energy is required to make this valve.
then the diesel particulate system on the focus that has the extra tank that has highly toxic fluid in it, that when you refill it you loose so much, do they forget that that needs to get cleaned up and disposed of, and then the process for making it in the first place cant imagine thats too pretty
and worst of all the hybrids, the sulpher mining required to get the stuff for the batterys is horrendous, and the batterys have a service life of 6 years? or something, hmmm very friendly, well atleast the gas coming out the exhaust is clean.
the dpf systems on the mazda puts diesel in on the exhaust stroke when its doing a regen, if it doesn complete it because its a short journey then it keeps on doing it, eventually filling the sump up where if it doesnt get changed it then runs on on the sump oil and destroys the engine, turbo, all the sensors in the exhaust system, and the cat, think of the processes that are needed to create all these components, and they all need replaced because of an emissions system thats just destroyed them all
however the power you actually get out the modern tdci engines is amazing, been driving about in several modern 2 litre diesels and the torque in them just blows you away
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All that said, I vote even more for the KERS system, it' s autonomous, thus leading to no failures to the main power plant, it saves the engine, clutch and the drivetrain from stress, it involves no expensive batteries (just a small one) and when put to mass production it may become as cheep as your alternator or starter motor today. Plus it would feel as real wind in the back...
Couldn't agree more that most of the stuff they put into modern diesels are rubbish and certainly NOT cost effective, leading to high expenses once they fail (DMF, electronic injectors, particle filters...) Name it and it may cost a fortune, especially when you purchase a used focus or some other derv...