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May 13th, 2017, 04:42 AM   #281
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Not knowing how the US undertakes vehicle tests but here in the UK it should be an hour long test (yes some garages cheat). I'd suggest that equipment can be fitted to cars/vans/lorries-trucks temporarily and then its taken out on the road, this would give you a far better understanding of emissions than the current setup.
I am talking about the certification/type approval testing required for emissions. It has to be repeatable.
Your proposal is good, though, it would provide a reference point (or points) that could inform the test regime. Problem is that legislators (with "assistance" from the manufacturers) would drag their feet like fuck and we'd get something in 10 years or so. Something that wouldn't reflect vehicle tech or usage.
It would be easier to make accel profiles etc that actually reflect reality and furthermore test perfomance areas that we know are crap for emissions.
In any case, Europe seems to be running away fast from diesels, so by the time anything meaningful happens it's likely to be irrelevant, sadly.
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May 13th, 2017, 04:43 AM   #282
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Don't own a diesel anymore - the timing chain let go on the last one.



Actually it was the opposite. I purposefully bought it because of my commute which is 55 miles a day. Have a petrol engine now.


Timing chain buddy? Wow, what car was it? Usually a chain lasts ages and can be heard way before it lets go.
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May 13th, 2017, 05:33 AM   #283
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Timing chain buddy? Wow, what car was it? Usually a chain lasts ages and can be heard way before it lets go.
It was a Vauxhall Corsa with one of those awful generic Fiat derived engines in it. I don't know for sure that's what happened but it certainly sounded like it - although there was no advanced warning. I was running it to the ground anyway hence the lack of a post mortem.
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May 13th, 2017, 11:53 AM   #284
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Darn. I am sorry others have chimed in on the catalytic oxygenating process, before I could have showed off my gas emitting superiority. ;-P I will just concur that the converter bricks have changed and rather than requiring more oxygen, they require more heat.

I am a bit confused by these talks of higher rpm for efficiency, however. It seems like an oxymoron when talking about diesel engines.

Last edited by Iamapony; May 13th, 2017 at 02:53 PM.
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May 14th, 2017, 02:48 AM   #285
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Europe seems to be running away fast from diesels, so by the time anything meaningful happens it's likely to be irrelevant, sadly.
I still have 2 diesels a Jag XF and a VW Caddy, they've lost half their value in the last 3 months
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May 14th, 2017, 02:50 AM   #286
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Originally Posted by Arrabbiata1 View Post
It was a Vauxhall Corsa with one of those awful generic Fiat derived engines in it. I don't know for sure that's what happened but it certainly sounded like it - although there was no advanced warning. I was running it to the ground anyway hence the lack of a post mortem.
Think the engine was a derivative of the Fiat Strada engine in the Mk1/2.
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May 14th, 2017, 07:45 AM   #287
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Irony is they invariably clog up.
True, but that's because in the height of Dieselmania people thought they'd inherit the earth buying an oil burner to pop to the shops half a mile away every day. Diesels need to get hot and especially the EGR valve to burn off the contaminants (which I know you already know).

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Timing chain buddy? Wow, what car was it? Usually a chain lasts ages and can be heard way before it lets go.
VW's and BMW's (ironically a Chrysler derived engine for the MINI) have a reputation of chain tensioners failing, which obviously causes the same sort of engine fuck up a chain letting go would, but a slightly different cause.

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I am a bit confused by these talks of higher rpm for efficiency, however. It seems like an oxymoron when talking about diesel engines.
It's not about efficiency, people are talking about getting enough heat into the engine/exhaust to get the DPF to work and not get clogged up.
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May 16th, 2017, 02:56 PM   #288
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....
It's not about efficiency, people are talking about getting enough heat into the engine/exhaust to get the DPF to work and not get clogged up.
My entire statement reflected what you say. However, my attempt at humor in that last sentence was really poor on many levels, including not tying it to the smog issue properly. I hope this is one of my bigger mistakes this month.
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May 19th, 2017, 06:52 AM   #289
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Great win for Dani! He was perfect.

Marquez with an important second.

And no offense to Dani, but I am far more thrilled with seeing Jorge get his first ever Ducati podium. What a great race from Jorge, and the first time we have seen him really look comfortable on the GP17. What a sensational ride and seeing him back in the bike into the corners might be a huge turning point for Ducati.

Zarco looked sensational, and he did an important thing by not backing down from Rossi early on in the race after the events of COTA. Best way to deal with all the shit from that overtake attempt is to come right back at Rossi and show you're not afraid of Rossi. Dovizioso rode a great race as well after how lost he looked in qualifying.

Vinales looked rather ordinary compared to the past 3 races. Rossi got mugged out there by everyone.

Championship battle just got tighter...going to be very interesting to see where we go with this.
Couldn't agree more. It's such a relief to see a new person come in that isn't reverential of Rossi. I want to see racing not riders melting every time he comes up on them.

Also agree about Lorenzo. I know it's one of his favourite tracks but it's still great to see him getting involved and grabbing a podium. I'm keeping my fingers crossed that he, and the team, can harness some of this confidence.

Finally props to Dani. I still think he's a bit of a journeyman who only seems to find his nuts when it's contract renewal time but maybe he could be going for one last push.
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