New Holland Construction Tier 4 - A Cleaner Future Built Around You, Our emissions compliance technologies

The pollutants in emissions


Polluting substances are produced during the combustion process due to the impurity of fossil fuel.

The main pollutants released by diesel engines are:

Nitrogen oxides (NOx): Formed during combustion at high temperatures (usually above 2912°F/1600°C) when molecular nitrogen (N2) and oxygen (O2) disassociate into their atomic states and react.

Particulate matter (PM): Composed of minute carbon particles and other toxic substances, PM results from an incomplete fuel-burning process, that occurs during combustion at low temperatures.