Normativa emissioni Carb - EPA

Tanto per capirci un po'.
CARB=




Californian Air Resources Board
EPA=
Environmental Protection Agency’s

Questo invece quanto previsto nei nostri paesi

Europe
The European regulations which cover recreational craft and PWCs define a recreational craft as having a hull length of between 2.5 metres and 24 metres and a PWC, a length of 4 metres or less.
In June 2003 the European Parliament passed an amendment to its Directive 94/25/EC concerning the regulation of recreational boats. Under the European framework Member States are required to introduce national legislation to give effect to directives.

12 The relevant exhaust emission limits of Directive 2003/44/EC which amends Directive 94/25/EC, are in Table 4.


Table 4: European Emission Limits for Small Spark Ignition Marine Engines
Engine type
HC NOx CO Particulates
Two Stroke 30+110/P 0.75 10 150 + 600/P



Four stroke

Queste sono le differenze:
Comparison of European and United States requirements
There are fundamental differences between European and US (both USEPA and CARB) regulations:


• the Europeans separately regulate hydrocarbon NOx and CO emissions whereas the US regulates combined emissions of HC and NOx and CO is reported but not regulated

• the Europeans have separate limits for two and four stroke petrol engines whereas the US has the same limits for all petrol engines

• US requirements become progressively stricter until 2006 (CARB 2008) each year

• CARB encourages early implementation of stricter emissions standards through a consumer labelling program (Tiers 1 to 4)

• The US, CARB and Europe also regulate emissions from inboards and sterndrives.
Taking into account the differences between the European, US and California regulations, Figure 3 compares the emission limits applying to engines of two power ratings (5kW and 40kW).

In summary:


• European requirements for two stroke engines are similar to the USEPA 2006 requirements but European four stroke requirements are substantially more stringent (about half the emissions)

• USEPA 2006 requirements, which are the same as CARB Tier 1, are substantially more stringent than the USEPA 2001 requirements

• CARB Tier 4 emission limits (i.e. a 4 star engine) are more than 90% lower than those of USEPA 2006

• European four stroke requirements are between the CARB Tier 2 and 3 requirements and are more stringent than the US standards.

Questa è una panoramica delle emissioni a confronto:



Interessante il fatto che in Italia i 2T ID abbiano una normativa dedicata che gli equipara ai 4T I.
Un 2 stelle ID in italia è EURO1 come un 4Ti.

Molto bello, ma quindi?
Se hai un epa o un carb 2 o 3 stelle, gli va bene o no?
E per quanto?
Anche sul nautico giocano con i numerini come su moto e macchine?

Se vedi nella tabella i carb 2-3 stelle accontentano gli EURO1 rispettivamente per i 2T ID e i 4T.

non ci ho capito nulla!!!

omone ha scritto:non ci ho capito nulla!!!

Ecco perchè ti frequento, mi riconosco in te

pispi ha scritto:

omone ha scritto:non ci ho capito nulla!!!

Ecco perchè ti frequento, mi riconosco in te

l'UNICA COSA CHE HO CAPITO E CHE OGNI TANTO BISOGNA ANDARE DAL BEZINAIO COME CON I NOSTRI.....