Engine Operation; Parts Of An Oxidative Catalytic Converter - Kohler SFGLD480 Operation & Maintenance Manual

The conversion efficiency of this type of oxidative catalytic converter is shown in the following table:
NOx
Null
NMHC: Hydrocarbons (no methane)
VOC: Volatile Organic Compounds.
CH2O: Formaldehydes.
HAPs: Polycyclic aromatic hydrocarbons.
Table 2. Reduction efficiencies of each contaminant in an oxidative catalytic converter.
Emissions sampling
Gas inlet points.
Oxidative catalytic converter

2. ENGINE OPERATION

The way in which an engine with an oxidative catalytic converter is operated may cause it not to work properly or
even damage or disable it The following requirements should thus be taken into account when operating the
engine-catalytic converter unit.
The engine must be operated and maintained in accordance with the manufacturer's specifications.
-
Maximum inlet temperature to the catalytic converter 600°C.
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Special lubricating oil with less than 0.6% weight of sulphated ash as an additive of the same must be used.
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Zinc content must be less than 900ppm and phosphorus content less than 400 ppm.
Substances deposited on the inner surface of the catalytic converter must not lead to an excessive increase in
-
the initial load of the catalytic converter, as it would be covering the reaction points and leading to a
progressive reduction in system efficiency.
accordance with IO-G-M-25-001 and IO-F-M-25-001.
The engine can operate with or without recirculation of crankcase gases, in accordance with the systems and
-
specifications defined by the manufacturer.
Fuel quality should meet the ASTM D975, ASTM D6751 standards and also have a sulphur content of <500
-
ppm, chlorine compounds of <10ppm and without the presence of silicon compounds.
PRODUCT INFORMATION
IC-C-D-40-003e
OXIDATIVE CATALYTIC CONVERTERS
CO NMHC VOC
70-95% 40-90% 60-99% 60-99% 60-99%
Gas outlet
Fig. 1 Parts of an oxidative catalytic converter.
The engine must operate with specific oil consumption in
2.7.2
INDEX
A
CH2O HAPs
A,B: Lid
C: Gaskets
D: retaining system
DATE
Dep. 2
May 2012
O&M_2.002211.810_A_10_2016
E: Catalyst element
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