Legislation in detail

What is the legislation called?

Stage IIIB in the EU. Tier 4 Interim in the US.

What does the legislation cover?

Exhaust emissions from off-highway engines of :

    Particulate Matter (PM). Also known as particulates, this is mainly soot (carbon particles) and lubricating oil residues
    Nitrogen Oxides (NOx). Including Nitrogen Monoxide (NO) and Nitrogen Dioxide (NO2).
    Hydrocarbons (HC). Carbon and hydrogen compounds mainly consisting of incompletely combusted fuel and oil residues.
    Carbon Monoxide (CO). A carbon and oxygen compound resulting from incomplete combustion in the presence of insufficient air.

When does the legislation come into effect?

See the “Legislative landscape” page for details of when the legislation comes into effect in your country or region.

You should note that if you are manufacturing original equipment for export, it must be compliant with the legislation in the importing country, not the country of manufacture.

How does Tier 4 Interim / Stage IIIB differ from existing legislation?

For a typical industrial engine of 100kW, Tier 4 Interim / Stage IIIB requires a reduction of Particulate Matter (PM) by 91% compared with the existing Tier 3 / Stage IIIA levels, and a reduction of Nitrogen Oxides (NOx) by 17% compared with Tier 3 / Stage IIIA levels.

 Legislation Timeline

The power selector and timeline below help to illustrate when the different legislations are to be introduced.
Simply select a power rating from the power bar below to see the legislation timeline by region.