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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 standard comes in 11 parts:

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