Stinking diesels.
Discussion
According to the motoring press modern diesels are clean and efficient but I've been behind more stinkers recently than you can count. Every make of car seems to be guilty with Audis, Peugeots, Fords, and the rest either belching clouds of black smoke under acceleration or just stinking like filth when they're in front of you. There should be an agreed sign that can be waved to diesel drivers when their cars smoke/stink so they have to get to the dealer for a new car.
eek said:
The fuel smells, the smoke smells.
Oily messy and bloody slippery.
Fuel for the cheap skates and veggies.
They say it saves the planet, but I say it kills people by stopping them breath and throwing them off bikes.
Get rid of the stuff and pay for proper fuel!
As does petrol.
Get the chav to pump it for you.
Company car, it's free.
I've never heard of a fuel saving anything never mind the planet.
Why does a diesel throw people off bikes? Or does everyone who breathe cycle?
It is proper fuel.
up-the-dubs said:
The fuel smells, the smoke smells.
Oily messy and bloody slippery.
Fuel for the cheap skates and veggies.
They say it saves the planet, but I say it kills people by stopping them breath and throwing them off bikes.
Get rid of the stuff and pay for proper fuel!
As does petrol.
Get the chav to pump it for you.
Company car, it's free.
I've never heard of a fuel saving anything never mind the planet.
Why does a diesel throw people off bikes? Or does everyone who breathe cycle?
It is proper fuel.
Diesel is deposited on the road when diesel vehicles accelerate, diesel is very slippery (being oil based I suppose) so very hazardous to motorcyclists, especially when it's rained for the first time in ages
R988 said:
Diesel is deposited on the road when diesel vehicles accelerate, diesel is very slippery (being oil based I suppose) so very hazardous to motorcyclists, especially when it's rained for the first time in ages
That sounds reasonable enough. As a cyclist(mtb), not a motorbiker, I'd never notice. Always wondered how the roads just got slippy! It can't just be from diesels though, can it?
>> Edited by up-the-dubs on Wednesday 9th November 00:44
Actually most modern diesels smoke heavily on harsh acceleration due to the heavy right-footed yokies behind the wheel! 
If you dump the throttle on a forced induction car the mixture leans right off (which is dangerous in its own right if a high boost is run), but it takes time for the motor to recover and spool up to generate the power, i.e. turbo lag. To get around this most cars are programmed via the ECU to over-richen the mixture (i.e. dump fuel at the intakes) whenever WOT is used (floored throttle). This partially alleviates the problem and gets around turbo lag (also helped by smaller, lighter pressure turbos these days) but as the cylinders are flooded, much of the fuel gets lost through poor combustion, hence the clags of smoke.
You'll notice that if you drive like this quite a bit your fuel consumption goes way down too...
A progressive flooring of the throttle, in tune with the engines acceleration, will result in less fuel dumping (and less snoking) and 'as quick' acceleration. It is generally the better for your engine too. It also fits better with the roadcraft style of planning your moves ahead and feeding in power deftly but smoothly... But then we all knew that anyway right!
If you dump the throttle on a forced induction car the mixture leans right off (which is dangerous in its own right if a high boost is run), but it takes time for the motor to recover and spool up to generate the power, i.e. turbo lag. To get around this most cars are programmed via the ECU to over-richen the mixture (i.e. dump fuel at the intakes) whenever WOT is used (floored throttle). This partially alleviates the problem and gets around turbo lag (also helped by smaller, lighter pressure turbos these days) but as the cylinders are flooded, much of the fuel gets lost through poor combustion, hence the clags of smoke.
You'll notice that if you drive like this quite a bit your fuel consumption goes way down too...
A progressive flooring of the throttle, in tune with the engines acceleration, will result in less fuel dumping (and less snoking) and 'as quick' acceleration. It is generally the better for your engine too. It also fits better with the roadcraft style of planning your moves ahead and feeding in power deftly but smoothly... But then we all knew that anyway right!
I reckon that people have realised that Diesels run on just about anything. Fuel prices have become so high. The only logical conclusion is that the larger proportion of the population is mulching old boots, dead animals, fallen leaf matter, you get the idea.....
It explains the smoke anyway.
All I can say is that if you know anyone with a diesel, you want to be careful. I've even heard of people killing off their friends, just so that they can join the congestion, with a "day follows night" commuter regularity.
It explains the smoke anyway.
All I can say is that if you know anyone with a diesel, you want to be careful. I've even heard of people killing off their friends, just so that they can join the congestion, with a "day follows night" commuter regularity.
We've just started dyno. testing the next generation of diesels with DPF (Diesel Pariculate Filters).
At first we thought our smokemeters had stopped working as the smoke was so low (usual readings about 2-3FSN now 0.005-0.01
). Turns out they were working correctly!
...not sure how much smoke will occur during DPF regeneration, but impressive nonetheless...
At first we thought our smokemeters had stopped working as the smoke was so low (usual readings about 2-3FSN now 0.005-0.01
). Turns out they were working correctly! ...not sure how much smoke will occur during DPF regeneration, but impressive nonetheless...
nelly1 said:
We've just started dyno. testing the next generation of diesels with DPF (Diesel Pariculate Filters).
At first we thought our smokemeters had stopped working as the smoke was so low (usual readings about 2-3FSN now 0.005-0.01
...not sure how much smoke will occur during DPF regeneration, but impressive nonetheless...
I've got the 150bhp Saab 9-3 diesel which is Euro IV compliant (as clean as they come) and is fitted with these filters. It does not smoke on start up. Nor does it smoke (at all) under hard acceleration. As has been stated earlier, a smoky modern diesel needs sorting - probably gummed injectors or the like.
nelly1 said:
We've just started dyno. testing the next generation of diesels with DPF (Diesel Pariculate Filters).
At first we thought our smokemeters had stopped working as the smoke was so low (usual readings about 2-3FSN now 0.005-0.01
...not sure how much smoke will occur during DPF regeneration, but impressive nonetheless...
My 535d has a particle filter and never smokes - the govt doesn't seem to (or doesn't want to) recognise the benefits of these yet as the car is taxed just like any other diesel which provides little incentive for manufacturers to keep developing them
lockup said:
Diesel is deposited on the road when diesel vehicles accelerate...
Mostly, diesel is deposited on the road when trucks with over-filled tanks go round roundabouts. That is scary on a bike!
Many HGV's have their tanks brimmed right to the top, so often the fuel can leak out via the fuel cap and onto the road, especially on roundabouts.
Check out this site to see how widespread and lethal this problem can be.
http://darrenbourne.co.uk/killspills/
juliann said:
My 535d has a particle filter and never smokes - the govt doesn't seem to (or doesn't want to) recognise the benefits of these yet as the car is taxed just like any other diesel which provides little incentive for manufacturers to keep developing them
Firstly, do you really think the Gov. gives a toss? They just rub their hands because cars with DPFs cost more, ergo they collect more tax.
Secondly, manufacturers don't have a choice as it's a Euro Directive.
I reckon those who make the regs. might have done themselves out of a job though.
How do you improve on zero smoke?!?!?
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