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| Document Title | ASEP test results: Replacement exhaust systems | ||||||||
| Reference Number | GRB-55-11 | ||||||||
| Date |
8 Feb 2012
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| Summary | CLEPA presentation of the results of its noise-emission tests on seven vehicles comparing original equipment and replacement (aftermarket) silencing systems (mufflers) under the "Additional Sound Emissions Provisions" test procedure. | ||||||||
| Source(s) | CLEPA | ||||||||
| Rulemaking Area(s) | UN R59 Replacement Silencing Systems | ||||||||
| Meeting(s) | |||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | ||||||||
| Excerpts from session reports related to this document | |||||||||
| GRB | Session 55 | 7-9 Feb 2012 |
13. The expert from CLEPA introduced GRB-55-11 concerning the results of a test performed by his organization on additional sound emission provisions (ASEP) of exhaust replacement systems. Moreover, he gave a further presentation (GRB-55-17) showing that as an outcome of the test, two possible alternatives were possible to settle ASEP within UN Regulation No. 59: (i) test should only apply for replacement systems with the same acceptance criteria as for original equipment by using test method A or B or (ii) test should be carried out back to back to original equipment and replacement system. Most of GRB experts stated that it was too premature to indicate the most appropriate alternative. GRB agreed to resume discussion on this subject on the basis of a concrete proposal prepared by the experts from the Netherlands and CLEPA. |
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