TS ISO 7967-3

TS ISO 7967-3 is the Part 3 vocabulary document in the ISO 7967 series for reciprocating internal combustion engines, covering the terms used for valves, camshaft drives and valve actuating mechanisms. These components form the engine’s valve train and timing system, so consistent naming matters in engineering design, service documentation and technical communication.

Core terminology for valve timing and motion transfer

In general technical context, valves control the intake of fresh charge and the discharge of exhaust gases from the cylinder. The camshaft is the eccentric shaft that sets the opening and closing sequence of those valves, while the camshaft drive is the arrangement that transmits rotary motion from the crankshaft to the camshaft. Valve actuating mechanisms are the linked parts that convert cam motion into valve movement, typically including followers, push rods, rocker arms and related elements.

What this part organises as vocabulary

• Terms for valves and related functional elements
• Terms for camshaft drives and timing arrangements
• Terms for mechanisms that actuate the valves
• Vocabulary used for reciprocating internal combustion engines
• A terminology framework aligned with the basic engine classification and terms in ISO 2710-1

This standard is a terminology document rather than a test method or a performance specification. As a Part 3 document, it isolates one functional group within the broader series, helping reduce ambiguity in design notes, maintenance manuals, catalogues and other technical records.

This listing corresponds to the withdrawn TS ISO 7967-3 edition based on ISO 7967-3:2010. Its value lies in establishing a shared language for the valve train and timing components of reciprocating internal combustion engines.