TS ISO 7967-2

TS ISO 7967-2 is a terminology standard for the main moving parts of reciprocating internal combustion engines. It provides a common vocabulary for the components that are central to power generation and load transmission in these engines, helping engineers, designers, and technical authors use the same terms consistently in drawings, manuals, and component descriptions.

What the main running gear covers

The scope of this document is the terminology associated with the main running gear of reciprocating internal combustion engines. In general technical terms, this is the set of moving parts that carries the piston’s reciprocating motion into the crankshaft’s rotary motion and supports the mechanical loads created during engine operation. Clear naming matters because these parts are structurally and functionally distinct from surrounding engine components, yet closely linked in operation.

Engine types outside the scope

The standard does not apply to rotary piston engines or other engine types. Its subject is limited to reciprocating internal combustion engines, so the vocabulary is intended for this specific engine architecture rather than for alternative combustion engine designs. That distinction helps avoid ambiguous terminology when different engine kinematics use similar-sounding component names.

As a terminology document, the standard is about definitions rather than test procedures or performance limits. Its value lies in harmonizing component names and descriptions for technical communication, documentation, and engineering reference.