mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

GF07.61-P-3032V ME-SFI TWC Heating-Up, Function|Page 7255 > < GF07.61-P-3032V ME-SFI TWC Heating-Up, Function|Page 7253
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Catalytic Converter: Description and Operation
GF49.10-P-2010V Three-Way Catalytic Converter, Component Description

GF49.10-P-2010V Three-way Catalytic Converter, Component Description

Location

Near the engine in the front section of the exhaust system.

Task

Reduction of the following pollutants in the exhaust:

-

Carbon monoxide (CO)

-

Hydrocarbon (HC)

-

Nitrogen oxide (NOx).

In each catalytic converter, there are two ceramic monoliths with each approx. 600 cells. The exhaust gas flows through these passages. The ceramic
consists of high temperature-resistant magnesium aluminum silicate.

The monoliths are extremely sensitive to warping and are embedded in an elastic wire mesh of high-carbon steel wire and mounted inside a double-wall
housing of stainless steel.

Ceramic monoliths require a support layer of alumina (Al2O3) (the "washcoat"), which increases the effective surface of the catalytic converter by a

GF07.61-P-3032V ME-SFI TWC Heating-Up, Function|Page 7255 > < GF07.61-P-3032V ME-SFI TWC Heating-Up, Function|Page 7253