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ISO 8178-9 2nd Edition, August 15, 2012 Reciprocating internal combustion engines - Exhaust emission measurement - Part 9: Test cycles and test procedures for test bed measurement of exhaust gas smoke emissions from compression ignition engines operating under transient conditions
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 8178 specifies the measurement procedures and
test cycles for the evaluation of smoke emissions from compression
ignition engines on the test bed.
For transient smoke test cycles, smoke testing is conducted
using smokemeters which operate on the light extinction principle.
The purpose of this part of ISO 8178 is to define the smoke test
cycles and the methods used to measure and analyse smoke.
Specifications for measurement of smoke using the light extinction
principle can be found in ISO 11614. The test procedures and
measurement techniques described in Clauses 1 to 11 of this part of
ISO 8178 are applicable to reciprocating internal combustion (RIC)
engines in general. However, an engine application can only be
evaluated using this part of ISO 8178 once the appropriate test
cycle has been developed. Annexes A, B, E and F to this part of ISO
8178 each contain a test cycle that is relevant only for those
specific applications listed in the Scope of that annex. Where
possible, the smoke test cycle described in the annex utilizes the
engine and machine categories developed in ISO 8178-4.
For certain categories of non-road engines "at site" rather than
"test bed" smoke test procedures can prove to be necessary. For
engines used in machinery covered by additional requirements (e.g.
occupational health and safety regulations), additional test
conditions and special evaluation methods can apply.