US 4,748,807 AGranted

Loose material catalyzer

AssigneeVemas Vertriebs- und Marketing-Gesellschaft m.b.H.

InventorBrunner Vladimir

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Abstract

A loose material catalyzer disposed in the exhaust pipe of an internal combustion engine for purifying the exhaust gases thereof. The catalyzer includes a housing having a cylindrical wall. A first perforated plate is disposed in the housing essentially perpendicular to the cylindrical wall thereof, and receives exhaust gases for purification. A second perforated plate is disposed in the housing essentially perpendicular to the cylindrical wall thereof and allows purified exhaust gases to proceed downstream. A catalyst bed is disposed in the housing and is bounded by the cylindrical wall thereof and the two perforated plates. The catalyst bed is provided with granular catalyst material that tends to disappear during use, whereby the first, upstream perforated plate is axially movably disposed in the housing to compensate for the disappearance of the catalyst material. A magnet arrangement is disposed on the outside of the catalyzer and includes an armature, in the catalyzer, that acts on the first perforated plate to press the latter against the material of the catalyst bed.

Claims14

Dependent claims

A loose material catalyzer disposed in the exhaust pipe of an internal combustion engine for purifying the exhaust gases thereof, said catalyzer comprising:

a housing having a cylindrical wall;
a first perforated plate disposed in said housing essentially perpendicular to said cylindrical wall thereof, with said first perforated plate receiving exhaust gas for purification;
a second perforated plate disposed in said housing essentially perpendicular to said cylindrical wall thereof, with said second perforated plate allowing purified exhaust gas to proceed downstream;
a catalyst bed disposed in said housing and bounded by said cylindrical wall thereof and by said two perforated plates, said catalyst bed being provided with granular catalyst material that tends to disappear during use, whereby said first, upstream perforated plate is axially movably disposed in said housing so that it can compensate for said disappearance of said catalyst material;
and
a magnet arrangement that is disposed on the outside of said catalyzer and includes an armature, in said catalyzer, that acts on said first, movable perforated plate to press the latter against said material of said catalyst bed to effect said compensation.

3 more elements

Dependencies are inferred from the claim text.