Glossary

Retrofit Exhaust gas cleaning systemfitted after the system withthe diesel engine has been delivered (e.g. bus, construc- tion machine) to the customer. Canning EPA Off-highway SMF Canning is used to describe the manufacture and provi-sion of casings for diesel particulate professional filters (DPF The US environmental protec-tion agency, often abbreviated to EPAor also US EPAis an organisation of the US government dedicated toenvironmental protection and protection against risks tohuman health. It developsand enforces implementation of the environmental protec- tion regulations. Off-highway refers to the use of systems in vehicles notregistered to drive on roads(e.g. construction machines,forklifts, special vehicles).
® ) as a component part of a com-plete exhaust gas system,partly including the neces- sary exhaust pipes. Fine particulates Particles Airborne contaminant par-ticles with an aerodynamic diameter of fewer than 10 µm(PM Since the US introduced limits for particle emissions in1972, particles are defined bythe method of measurement. According to the measure-ment technique defined bythe US EPAand EU directive 88/77/EEC, particles aresolid and gaseous exhaustcomponents which can be separated from exhaust gas diluted with filtered ambientair using a test filter at a de-fined maximum temperature of 51.7 °C.
® -AR CRT SMF
® with active regeneration,whereby active regenerationcurrently refers to so-called "thermoelectric regeneration".This is a regeneration pro-cess specially developed forthe SMF
® CRT
® stands for PM C ontinuously R egeneration T rap – and describes a com-bination of a diesel oxidation catalytic industrial converter (DOC)with a diesel particulate filter(ceramic or sintered metal).
® which uses a hea-ting unit, an additive dosingsystem and a customisedelectronic control unit (ECU).
10 ). DPF
® NO
x VERT DPF
® stands for diesel parti-culate filter. DPF Nitrogen oxide (NO
x ) is gene-rated in combustion proces-ses with high temperatures,for example in vehicles, power stations and industry.Nitrogen oxide is dangerousto human health. Aspecial aspect of nitrogen oxide inconnection with modern engi-ne technology is the conflict between reduced consumpti- on and reduction of NO VERTstands for the reductionof emissions from machinesused in tunnel construction. VERTis a project conductedby the Swiss institute foraccident protection (SUVA), the Munich civil engineering association (TBG), theAustrian general accidentinsurance institute (AUVA) and the Swiss federal officefor the environment, forestand countryside (BUWAL).
® is a registe-red trademark of the Germancompany HJS Fahrzeugtech-nik.
10 Particles that pass a size-selecting air inlet with anaerodynamic diameter of 10 µm are characterised by a separation efficiency of atleast 50%. Similarly, "particu-late matter" = fine dust or aerosols.
x emissions. Efficient engines have a high combustion temperature and thereforeproduce more NO
x . 7