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ulez for 20v VIS #1652199
27/07/2021 22:55
27/07/2021 22:55
Joined: Aug 2015
Posts: 410
Uk
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Makkadiamond Offline OP
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Does any one known the ULEZ emissions for the 20 valve VIS ?

Last edited by Makkadiamond; 27/07/2021 22:55.
Re: ulez for 20v VIS [Re: Makkadiamond] #1652211
29/07/2021 06:39
29/07/2021 06:39
Joined: Jun 2008
Posts: 1,312
Kent, South East
Cooperman Offline
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Cooperman  Offline
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Posts: 1,312
Kent, South East
Fiat Coupe is only Euro 2 standard, Euro 4 is the min ULEZ std


[Linked Image]
Re: ulez for 20v VIS [Re: Makkadiamond] #1652220
30/07/2021 09:55
30/07/2021 09:55
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Makkadiamond Offline OP
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Thanks for reply

Re: ulez for 20v VIS [Re: Cooperman] #1662219
02/12/2022 20:25
02/12/2022 20:25
Joined: Feb 2021
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Tr8coupe Offline
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Sutton
Does any got eec certificate of Conformity for fiat 20vt6 normally document when car is new
Or nox for 20vt6

Re: ulez for 20v VIS [Re: Makkadiamond] #1662220
02/12/2022 21:41
02/12/2022 21:41
Joined: Dec 2005
Posts: 8,596
Lightwater, Surrey
DaveG Offline
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Je suis un Coupé

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Lightwater, Surrey
According to the AA website, emissions limits that apply to ULEZ are as follows, with values reported on on the Certificato di Confirmita CEE which I have for my 20vt Plus shown in bold afterwards

Euro 4 emission limits (petrol)
CO – 1.0 g/km 1.337
HC – 0.10 g/km not given
NOx – 0.08 g/km not given
PM – no limit not given

So it fails on CO, but before you get your hopes up on NOx, the total HC+NOx is given as 0.383 vs. the limit of 0.18

The Fiat Coupe is only Euro 2 compliant at best frown


1996 Portofino 20vt & 2000 Pearl White Plus
2008 Ferrari F430 & 2017 Fiat 124 Spider
Re: ulez for 20v VIS [Re: DaveG] #1662266
05/12/2022 18:54
05/12/2022 18:54
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Tr8coupe Offline
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Limit is 0.08
The fiat coupe vt6 must be near that limit
I have to wait up to 3 months as I asked fiat for a certificate of Conformity

Re: ulez for 20v VIS [Re: Makkadiamond] #1662273
06/12/2022 09:04
06/12/2022 09:04
Joined: Dec 2005
Posts: 8,596
Lightwater, Surrey
DaveG Offline
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DaveG  Offline
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Je suis un Coupé

Joined: Dec 2005
Posts: 8,596
Lightwater, Surrey
Yes 0.08 for NOx but figure is not given on CEE, only HC + NOx for which limit is 0.10 + 0.08 = 0.18.

If your CEE is the same as mine, it will not give a figure for NOx so that 3 month wait may be for nothing...


1996 Portofino 20vt & 2000 Pearl White Plus
2008 Ferrari F430 & 2017 Fiat 124 Spider
Re: ulez for 20v VIS [Re: Tr8coupe] #1662274
06/12/2022 09:39
06/12/2022 09:39
Joined: Feb 2019
Posts: 334
Free State of Jones
clanger Offline
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Originally Posted by Tr8coupe
Limit is 0.08
The fiat coupe vt6 must be near that limit
I have to wait up to 3 months as I asked fiat for a certificate of Conformity


Unfortunately the CoC will not give you that breakdown between NOx and HC figures. The requirement to do so only came in on the Euro 3 standard. Euro 1 and 2 lumped the HC and NOx in together, Coupes being Euro 2 vehicles I doubt you will ever find the info short of getting it tested yourself (which no doubt they would accept even if it met the standard!!)


E85
Re: ulez for 20v VIS [Re: Makkadiamond] #1669981
02/02/2024 20:01
02/02/2024 20:01
Joined: Aug 2015
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Uk
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Makkadiamond Offline OP
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Emissions for the VIS does anyone know what they are or
have a certificate of conformity (CoC) for
The VIS

Regards

Re: ulez for 20v VIS [Re: DaveG] #1672621
27/06/2024 23:55
27/06/2024 23:55
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Makkadiamond Offline OP
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Originally Posted by DaveG
According to the AA website, emissions limits that apply to ULEZ are as follows, with values reported on on the Certificato di Confirmita CEE which I have for my 20vt Plus shown in bold afterwards

Euro 4 emission limits (petrol)
CO – 1.0 g/km 1.337
HC – 0.10 g/km not given
NOx – 0.08 g/km not given
PM – no limit not given

So it fails on CO, but before you get your hopes up on NOx, the total HC+NOx is given as 0.383 vs. the limit of 0.18

The Fiat Coupe is only Euro 2 compliant at best frown


--- Here are emissions from the fiat Manual but CO is given as a percentage and the HC is p.p.p.m .. can these figures be converted

Regards

Attached Files
Last edited by Makkadiamond; 27/06/2024 23:57.
Re: ulez for 20v VIS [Re: Makkadiamond] #1672684
01/07/2024 15:17
01/07/2024 15:17
Joined: Aug 2012
Posts: 53
Scotland
rowl Offline
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Unfortunately those figures cannot be converted to g/km without filling in certain unknown assumptions.

The ppm figures in the handbook refer to the concentrations of CO and CO2 present in exhaust gas -- to know the the actual amount in grammes produced in one kilometer, you would need to know the volume of exhaust gas produced per kilometer of driving.

Of course we all know the latter very much depends on driving style/terrain!

It seems the way this is assessed for the Euro emissions measurements is on a dyno, with a rather specific simulated driving schedule (the New European Driving Cycle).

Without actually doing that measurement, all we can do is plug in a guess as to the exhaust gas volume per kilometer for a VIS under those conditions which -- in turn -- makes whatever answer you might get far from definitive.

Last edited by rowl; 01/07/2024 15:21.
Re: ulez for 20v VIS [Re: Makkadiamond] #1675401
25/01/2025 17:07
25/01/2025 17:07
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Makkadiamond Offline OP
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HI @ROWL

I got this info from Chatgtp with regards the conversion for CO% HC ppm says the 20V VIS is within Euro4 standard need a conclusive answer on the NOx value asking Fiat heritage and fiat club Italy.

My VIS used to give in excess of 40 mpg especially with the radio turned up to drown the sweet sound of the exhaust smile


The VIS was way ahead of the time the fiat coupe hand book page 95 also says "“ Environmental protection has been one of the guiding principles in the production of the Coupé Fiat. It is no accident that its pollution control equipment's i much more effective than that required by current legislation.....


fingers crossed on this endeavour ...

Attached Files
Re: ulez for 20v VIS NOx [Re: Makkadiamond] #1675426
27/01/2025 19:03
27/01/2025 19:03
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Makkadiamond Offline OP
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Uk
Hi the European Emissions Standards info from wikipedia no mention of CO2 just which is printed in the workshop Manual as < 0.35 so which is within euro 4 standard


I have spoken to Fiat and Fiat Heritage via email, told me that the" relevant department" has no information on Euro 4 NOx.


Further more we now know from the Workshop Manual CO and HC ppm are within the Euro 4 Standard. The Fiat Coupe 1998 work Workshop Manual mentions NOx.

"The three-way catalytic converter, makes it possible to simultaneously keep down the levels of the three
pollutant gases in the exhaust gases: unburnt hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx).Two types of chemical reaction take place inside the converter:
oxidation of the CO and the HC, converted into carbon dioxide (CO2) and water (H20);reduction of the NOx, converted into Nitrogen (N2)."


If the Fiat Manual is saying NOx is "reduced" Fiat I assume measured NOx at the time the car was tested .

Does any member / club official have any contacts with Fiat that can find out what the NOx value was in 2000 ? or old Fiat Documents that mention NOx value ? anything whatsoever


I am hoping it is within the Euro 4 limit of 0.8 NOx but if it is above the limit I have a definite answer and can put this quest to bed.


Regards


Mac






Last edited by Makkadiamond; 27/01/2025 19:06.

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