Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p62
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 62/150)
Character Range: 886289–889373

B2 the manufacturer shall demonstrate that emissions are lower than the OTLs.
 In case the Type Approval Authority disagrees with the classification of a malfunction as Class B2 because it considers that the OTLs are exceeded, the manufacturer may be required to demonstrate by testing that the emissions due to the malfunction are below the OTLs. If the test fails, then the Type Approval Authority shall require the reclassification of that malfunction into A or B1 and the manufacturer shall subsequently demonstrate the appropriate classification and the documentation shall be updated.
6.2.5. Demonstration of classification into Class B2 (distinguishing between B2 and C)
 If the Type Approval Authority disagrees with a manufacturer's classification of a malfunction as Class B2 because it considers the regulated emission limits are not exceeded, the Type Approval Authority requires the reclassification of that malfunction into Class C. In that case the approval documents shall record that the malfunction classification has been assigned according to the request of the Type Approval Authority.
6.2.6. Demonstration of classification into Class C
 In order to justify the classification of a malfunction into Class C the manufacturer shall demonstrate that emissions are lower than the regulated emission limits.
 In case the Type Approval Authority disagrees with the classification of a malfunction as Class C the manufacturer may be required to demonstrate by testing that the emissions due to the malfunction are below the regulated emission limits.
 If the test fails, then the Type Approval Authority shall request the reclassification of that malfunction and the manufacturer shall subsequently demonstrate the appropriate reclassification and the documentation shall be updated.
6.3. Procedures for demonstrating the OBD performance
 The manufacturer shall submit to the Type Approval Authority a complete documentation package justifying the compliance of the OBD system as regards its monitoring capability, which may include:
 (a) Algorithms and decision charts;
 (b) Tests and/or simulation results;
 (c) Reference to previously approved monitoring systems, etc.
In the following paragraphs the requirements for demonstrating the OBD performance are listed, including requirements for testing. The number of tests shall be four times the number of engine families considered within the emission OBD family, but shall not be less than eight.
 The monitors selected shall reflect the different types of monitors mentioned in paragraph 4.2. (i.e. emission threshold monitoring, performance monitoring, total functional failure monitoring, or component monitoring) in a well balanced manner. The monitors selected shall also reflect the different items listed in Appendix 3 to this annex in a well balanced manner.
       6.3.1.  Procedures for demonstrating the OBD performance by testing
 In addition to the supporting data referred to in paragraph 6.3., the manufacturer shall demonstrate the proper monitoring of specific emission control systems or components