Engines With A Catalytic Converter - Kohler SFGLD480 Operation & Maintenance Manual

5.3. ENGINES WITH A CATALYTIC CONVERTER

The Kohler engines with a catalytic converter to reduce emissions deserve a special treatment within this
document. Catalytic converters require the fulfillment of several special requisites in terms of fuel gas
contaminants and lubricating oils used in the engine. This is why the fuel gas specifications must be checked by
Kohler in accordance with the type and brand of catalytic converter whenever one is installed on the engine.
(See IC-G-D-45-001)
Catalytic converters may be reliably used only on natural gas-fueled engines. All other types of gas do not meet
the specifications required by the catalytic converter manufacturers.
6. ENGINE LUBE OIL ANALYSIS AS AN INDICATOR OF THE FUEL GAS
CHARACTERISTICS.
On certain occasions, lubricating oil analysis may serve as a relative measure of the quantities of contaminants
that may show up in a fuel gas fed to the engine.
Lubricating oil is one of the engine consumables that permit to rapidly notice a deterioration of their properties due
to the increase in the amounts of contaminants in the fuel gas.
In those installations where there are no continuous sampling of gas contaminants and where it is thus possible to
have periods of time in which the limits specified in this document could be surpassed, we recommend, for a
reliable operation of the engine, that the lubricating oil of the engine should be analyzed frequently according to
the criteria set forth in Product Information Sheet IO-G-M-25-001e. Those analysis would allow to predict the type
of contaminants entering the engine or which components of the engine are getting deteriorated, before any
breakdown occurs.
Depending on the oil analysis results, it might be decided to make a specific analysis of the fuel gas contaminants
which might be affecting the engine, so as to be able to take any appropriate actions rapidly and effectively.
PRODUCT INFORMATION
IC-G-D-30-001e
FUEL SPECIFICATIONS FOR GAS ENGINES. GENERAL
4.1.17
INDEX DATE
D
March 2014
O&M_2.002211.810_A_10_2016
Dep. 2
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