Operation and Maintenance Manual forWP10 Series Four-valve Diesel Engine (China IV, V)
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3.5 Diesel Exhaust Fluid
The substandard diesel exhaust fluid(DEF) will easily lead to poisoning failure of SCR catalyst orlower reduction
efficiency(For instance, the out-of-limit of phosphorus, sodium, potassium and calcium contents in the DEF will
easily lead to poisoning of catalyst and if the concentration of DEFis unqualified, it will easily lead to excessive
leakage of NH3 or lower reduction efficiency of NOx) and excessive emission and malfunction indicator lamp
warning. So, the quality and the performance of DEF shall meet the requirements specified in standard ISO 22241.
See table 3-5 for details.
Table 3-5DEF specifications as perISO 22241
3.6 Auxiliary materials
Table 3-6 Auxiliary materials and applications