This part of GB/T 6809 specifies terms related to reciprocating internal combustion engine valves, camshaft transmission and drive mechanisms. GB/T1883.1~1883.2 provides the classification of reciprocating internal combustion engines and stipulates the basic terms of such internal combustion engines and their working characteristics.
GB/T 6809.2-2006 history
2013GB/T 6809.2-2013 Reciprocating internal combustion engines.Vocabulary of components and systems.Part 2:Valves,camshaft drives and actuating mechanisms
2006GB/T 6809.2-2006 Reciprocating internal combustion engines.Vocabulary of components and systems.Part 2:Valves,camshaft drive and actuating mechanisms
1988GB/T 6809.2-1988 Reciprocating internal combustion engines--Vocabulary of components and systems--Valves, camshaft drive and actuating mechanisms