This standard specifies the cleanliness limits for small and medium-power internal combustion engines. This standard applies to reciprocating piston internal combustion engines with a power of less than 735kW.
JB/T 9774-2005 history
2005JB/T 9774-2005 Small and medium power internal combustion engines - Cleanliness limits
1999JB/T 9774-1999 Internal combustion engines.Cleanliness limits for small and medium size engines