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 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:
- ISO 8178-1:2017 Part 1: Test-bed measurement systems of gaseous and particulate emissions
- ISO 8178-2:2008 Part 2: Measurement of gaseous and particulate exhaust emissions under field conditions
- ISO 8178-3:1994 Part 3: Definitions and methods of measurement of exhaust gas smoke under steady-state conditions
- ISO 8178-4:2017 Part 4: Steady-state and transient test cycles for different engine applications
- ISO 8178-5:2015 Part 5: Test fuels
- ISO 8178-6:2000 Part 6: Report of measuring results and test
- ISO 8178-7:2015 Part 7: Engine family determination
- ISO 8178-8:2015 Part 8: Engine group determination
- ISO 8178-9:2012 Part 9: Test cycles and test procedures for test bed measurement of exhaust gas smoke emissions from compression ignition engines operating under transient conditions
- ISO 8178-10:2002 Part 10: Test cycles and test procedures for field measurement of exhaust gas smoke emissions from compression ignition engines operating under transient conditions
- ISO 8178-11:2006 Part 11: Test-bed measurement of gaseous and particulate exhaust emissions from engines used in nonroad mobile machinery under transient test conditions (Withdrawn in 2014-08-13)