It was agreed that the discussion should initially concentrate on the Annexes. Stein asked that the durability requirements in para. 9 be discussed first as he could not be present for day 2.

Review of marked-up version of the draft REC
Small changes to the draft were noted below.

In later discussion of the annexes it was recognised that throughout the document it will be necessary to add references to ‘NRMM and category T’ rather than just NRMM. This is because although both are covered by Reg.96, NRMM and category T are separately defined within that regulation.

Consideration of the draft REC Regulations

REC-12-03 (rev.00 of the Regulation)

Paragraph 9:
Following a discussion on the availability of machines to run 1000 hrs durability in a reasonable time, Stein agreed to provide US guidance wording used for on- and off-highway applications.

In answer to a question regarding the requirements for data logging (to be provided to the Type Approval authority), it was agreed that a short break in data logging due to, for instance, data logger failure would not be seen as a problem that invalidated the test.

Annex 1:
In paragraph 2.1 it was agreed that to avoid confusion with type of REC, “manufacturer’s type identification” should be changed to “manufacturer’s model identification”. This will need cross-checking for other similar references in the document.

Regarding the identifying part number of the REC (para. 2.1.1), it was agreed the definition of the part number is up to the manufacturer. It needs to enable traceability from approval documentation to actual fitted systems.

Para. 3.4.2: Not all regeneration methods will fit neatly into ‘continuous’ or ‘active’. A more comprehensive description is expected from the manufacturer.

With the content of the section of this Annex on PM reduction RECs agreed, the editorial group will work on similar text for NOx and NOx+PM RECs.

Annex 2:
Small modifications were made to the text, including the substitution of “model” for “type” as in

Annex 1:
Section 16.7 is redundant as the information is included in Annex 2A.

The definition of application range in para. 3.3 of the body of the regulation does not match the use of the phrase in Annexes 1 and 4. It was agreed to amend the definition to:
“Application range” means the range of vehicles engines to which a retrofit emission control device (REC) approved according to in accordance with this regulation can be applied;”

The second paragraph of section 10 also needs to be modified. This was modified to:
“The application range is defined by limited to the engine family to which the test engine as defined in paragraph 12 belongs.”

Annex 3:
The manufacturer cannot define the model year and engine type to which the REC is fitted. The plate (which is a cut and paste from another regulation) therefore needs to be amended.

There was a discussion on the need to include ‘level’ in the markings. It was noted that the revisions version of the document is already included in the first 2 digits of the type approval number. It was suggested that the levels be renamed 00 and 01 so as to align with the revisions of the regulation. This would avoid that 00 = level 1 and 01 = level 2.

Paragraph 5 of the Regulation requires information on the manufacturer etc. to be provided on the label, therefore the second picture and following text are both redundant.

Annex 4:
The content (not headings) of the table needs to be deleted – this was an example only. It was questioned whether both Annex 4 and the second table in Annex 2A are needed.

Annex 5:
Mr Galey commented that not all systems fit simply into the definition of periodically or continuously regenerating. There are, for instance, continuously regenerating systems that have a back-up assisted regeneration capability. Williams noted that, as with OEM requirements, this annex refers to regeneration during the test cycle. This is therefore covered by the proposal.

The figure of 15% CoV for PM and back pressure variation over 25 cycles will need to be checked.