Characteristics MANN+HUMMELSMF
SMF
-AR: Reliable regeneration at low exhaust gas temperatures
-ARsintered metal
professional filters are sui-
table for use at low exhaust
temperatures. The filters loa-
ded with diesel particulates
are actively regenerated. The
regeneration process functions
under all engine operatingconditions. The SMF with sensor technology for
supervision of the function
and determining the amount
of trapped particulates.
System components include
an electronic control unit, an
automatic additive dosing
system and heating elements
for the purpose of filter rege-
neration.
-ARsystem consists of a dieselparticulate filter equipped the heating elements withoutphysical contact and is there-fore low-wear. Three heatingelements spaced 10 mm
apart surround the completefilter and ensure comprehen-sive and consistent heating
of the irradiated diesel parti-culates.The extremely low material
mass of the heating elementsallows the temperature to rise very quickly. This means that Principle of the SMF
-ARsystem During the process of activeregeneration in the sinteredmetal filter, the diesel parti-culates are trapped until a
specific volume of soot is
deposited on the filter materi-al which is ideal for electricalregeneration. Then the trap-
ped diesel particulates areburned off. The burning ofthe diesel particulates in the
SMF
-AR system is madethrough heat radiated from even under extreme conditionsthe fully-automatic burning ofthe layer of diesel particulates
can take place within a hea-
ting period of just 2 minutes.Approximately 10% of the filter casing surface area is
irradiated and this initiatesthe burning of diesel particu-lates over the complete filter
surface area. During the pro-cess the machine continuesoperation. ➊ Diesel engine ➋ Catalytic
industrial converter ➌
Temperature sensor manufacturer ➍ Heating elements ➎ Diesel particulate filter ➏
Pressure sensor suppliers ➐ Electronic control unit ➑ Additive tank ➒ Fuel tank 4