Technical Limitations Of The Lubricating Oil; Technical Limitations Of Combustion Gas And Exhaust Gas - Kohler SFGLD480 Operation & Maintenance Manual

4. TECHNICAL LIMITATIONS OF THE LUBRICATING OIL

The lubricating oil used by an engine with an oxidative catalytic converter in the exhaust must have certain
special specifications with regard to maximum additive content and maximum engine consumption. This is
because both high specific consumption of motor oil and excessive additive levels therein can lead to the
excessive generation of components that are damaging to the catalytic converter, or poisons that reduce its
performance and useful life.
As well as these values, the lubricating oil must comply with specifications relating to engines that do not have
oxidative catalytic converters fitted to their exhausts.
POISON
Zinc
Phosphorous
Sulphated Ash
Specific consumption
Table 3. Limit of harmful compounds entering the catalytic converter in the engine lubricating oil.

5. TECHNICAL LIMITATIONS OF COMBUSTION GAS AND EXHAUST GAS

As with the lubricating oil, certain catalytic converter poisons can mix with the exhaust gas flow as a result of the
combustion of the fuel used. The maximum quantity of poison catalytic converters can tolerate, like their
performance, depend on the suppliers. By way of example, the following table shows the limits for these types of
harmful components for the approved catalytic converter.
POISON
Chlorine compounds
Sulphur
Silicon compounds
Calcium
Sulphur
Phosphorous
Zinc
Iron
Sulphur+Calcium+Phosphorous+Zinc+Iron
Heavy metals: Pb, Hg, Ar, Sb, Zn, Cu, Sn, Fe,
Ba, Ni, Cr, P y S
Ash deposit
Table 4. Limit of harmful compounds entering the catalytic converter present in the engine's exhaust gases.
PRODUCT INFORMATION
IC-C-D-40-003e
OXIDATIVE CATALYTIC CONVERTERS
LOCATION
Combustion gas
Combustion gas
Combustion gas
Catalytic substrate
Exhaust gas
Catalytic substrate
2.7.5
INDEX
A
MAXIMUM AMOUNT
900 ppm
400 ppm
0.6% weight
In accordance with KOHLER specification IO-G-M-25-001
MAXIMUM AMOUNT
According to fuel IP
According to fuel IP
Null for both types of fuel.
< 1 %
< 1 %
< 1 %
< 0.5 %
<1 %
< 2 % (collectively).
200 ppm weight (collectively)
< 1g/litre of substrate
DATE
Dep. 2
May 2012
O&M_2.002211.810_A_10_2016
IP IC-G-D-30-002
IP IC-G-D-30-002
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