View Single Post
Old 11-21-2011, 05:10 AM   #10 (permalink)
aero guerrilla
Piwoslaw's Avatar
Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 3,687

Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
Thanks: 1,266
Thanked 718 Times in 455 Posts
I found some more info on European emssions standards. It turns out that each norm actually has two sets of limits: The amount that a newly produced car can emit (Homologation Emissions Limit HEL) and the amount that the car can emit once in normal operation (Operational Emissions Limit OEL).
The following table shows HEL/OEL in grams per kilometer:

EURO 3 petrol---0.2/0.40.15/0.6---/---2.3/3.2---/---
EURO 4 petrol---0.1/0.40.08/0.6---/---1.0/3.2---/---
EURO 5 petrol0.068/0.250.1/---0.06/0.3---/---1.0/1.90.005/0.05
EURO 5 petrol from 20130.068/0.250.1/---0.06/0.3---/---1.0/1.90.0045/0.05*
EURO 3 diesel------/---0.5/1.20.56/---0.64/---0.05/0.18
EURO 4 diesel------/---0.25/1.20.3/---0.5/---0.025/0.18
EURO 5 diesel---/0.32---/---0.18/0.540.23/---0.5/1.90.005/0.05
EURO 5 diesel from 2013---/0.32---/---0.18/0.540.23/---0.5/1.90.0045/0.05
*) Petrol engines with direct fuel injection and part- or full-time lean burn

Legend: NMHC - Non-Methene Hydrocarbons
THC - Total Hydrocarbons
NOx - Nitrogen Oxides
CO - Carbon Monoxide
PM - Particulate Matter

Notice that EURO 3 and EURO 4 differ only in HEL, both have the same OEL. In other words, a EURO 4 vehicle may be just as dirty as a EURO 3, but the EURO 3 will have more restrictions in Germany's Umweltzones, for example.

The new EURO 6 standard, which will go into effect in September 2013 (type approval)/2014 (first registration) is still being revised, but two new limits for diesels are already known: NOx will be reduced from 180 to 80 g/km, and THC+NOx from 230 to 170 g/km.
e·co·mod·ding: the art of turning vehicles into what they should be

What matters is where you're going, not how fast.

"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell

[Old] Piwoslaw's Peugeot 307sw modding thread
  Reply With Quote