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Mobile emission controls: Johnson Matthey's Three Way Filter (TWF®) technology can reduce particle numbers by 50 ‐ 90% on gasoline direct injection engines.
Mobile emission controls: selective catalytic reduction (SCR) systems work by chemically reducing nitrogen oxide to nitrogen.
Mobile emission controls: nitrogen oxide can be removed from a lean gas stream by chemical adsorption onto a catalyst, hence the term nitrogen oxide adsorber catalyst (NAC). The process of adsorption releases carbon dioxide.
Mobile emission controls: a diesel particulate filter (DPF) removes particulate matter from diesel exhaust by physical filtration.
Mobile emission controls: many diesel particulate filter (DPF) systems incorporate an oxidation catalyst, either as a coating on the filter or as a separate element.
Mobile emission controls: the SCRF® system integrates Selective Catalytic Reduction (SCR) with a soot filter – the next step for diesel nitrogen oxide control.
Mobile emission controls: the SCRT® system is more than simply a combination of a CRT® system and an SCR system.
Mobile emission controls: three-way catalysts for cars, vans, light trucks and motorcycles.
Stationary emission controls: These systems are normally suitable for use with a wide range of non-road mobile machinery (NRMM), engine power ranges and engine emissions levels.
Stationary emission controls: This system uses air to burn the carbon in the filter. An additive is dosed into the fuel and passes through the engine to be deposited on the filter.