ISO 8178 is a collection of steady state test cycles used for defining emission standards for non-road engines in the European Union, United States, Japan and other countries.
Test cycle ISO 8178 C1 is also referred to as "Non-Road Steady Cycle" and used extensively.
The Non-road Transient Cycle is supplementing it in some modern emission standards.
It is defined by the International Organization for Standardization (ISO).
The ISO 8178 Reciprocating internal combustion engines — Exhaust emission measurement standard comes in 11 parts: