Component description for the oxidation catalytic convertor - GF49.10-P-3006GZ

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ENGINE 642 in MODEL 164.1 /8

ENGINE 642 in MODEL 463

Fig 1: Identifying Oxidation Catalytic Convertor - Engine 642 In Models 164.1 /8, 463

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

The oxidation catalytic converter is near-engine mounted downstream of the turbocharger.

Body

Schematic view of oxidation catalytic converter

Task

Reducing the pollutant components of carbon monoxide (CO), hydrocarbon (HC), oxides of nitrogen (NO_X )

Fig 2: Schematic View Of Oxidation Catalytic Converter

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The exhaust flow consists of a number substances including:

CO
HC
NO_X

Fig 3: Identifying Monolith Ceramic Body Small Passages
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function

The ceramic monolith is a ceramic body through which many thousands are small passages are drawn. The ceramic consists of a high temperature-resistant magnesium-aluminium silicate.

The monolith which is extremely sensitive to voltages is embedded in an elastic expanded matting and mounted in a stainless steel housing.

Coating

The carrier layer applied to the ceramic monolith with the operative catalytic layer consists of platinum and accelerates oxidation of HCs and CO.

The HC and CO act to reduce the NO_X portion. This is made possible by the special catalytic converter design.

The content of rare metals contained in an oxidation catalytic converter is approx. 5 grams, depending on size and design.