Quote:
Originally Posted by prktkljokr
And I would say they might be sort of effective at idle and maybe putting around town, but at 100 down the freeway they cant get it all, its like when they had the air pumps on petrol motors, the emissions the motor emits were still the same, they just diluted it with clean air into the exhaust to reduce what it read at the tail pipe, what a joke that was, just like saying here we have 4 litres of sulfuric acid, we will dilute it with 100 litres of water now it should be safe to drink?, its still sulfuric acid.
Ok the cat will give it a second burn, but will it burn it all when you are at full tilt, that I very much doubt, what comes out the tailpipe still contains the nasties, at a lower level than if they don't have a cat, sure, but it has not eliminated what a engine produces, as we still get some nasties out the tailpipe.
Then the DPF burn, what crap is it spewing out when it does this, the way I see it the engine runs, the DPF collects the nasties, then you do a DPF burn down the track and it dumps all the nasties you have collected, you cant say that these are efficient and really don't let any of the nasties spew out?, sure they might be fine when the vehicle is new, but I doubt it after a few years.
Just look at California where you have to have your vehicle smog tested, you wont see too many older cars on the road there.
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The big issue with DPF is a lot of the Toyotas just tootle around the suburbs and never really
get enough temperature in the system to permit DPF burn off. They need to run on the highway
and do that black sooty thing you’ve seen otherwise it gums up the works and ends up
costing owners a lot more to fix. I hate thes modern diesels with a passion, they took
a simple idea and made it so complicated that now it’s becoming just an expensive
problem waiting to happen sometime in the future.
The diesel cat converter is there for the urea adblue to reduce NOX, it does nothing for the diesel particles.
In contrast, petrol cat converters look after all three HC, CO and NOX, while any particle filters
if fitted are way cheaper to periodically change than anything on a diesel…