This part of GB/T 3809 specifies the terms related to the lubrication system of reciprocating internal combustion engines. GB/T 1883 gives the classification of reciprocating internal combustion engines, and stipulates the basic terms of such engines and their working characteristics.
GB/T 6809.6-2009 Referenced Document
GB/T 1883.1 Reciprocating internal combustion engines.Vocabulary.Part 1: Terms for engine design and operation