Swiss study on heavy duty vehicles with NOx reduction systems (SCR or DPF+SCR systems) towards defining a simplified test procedure for measuring emissions, including prospects for applying such testing to retrofit emissions control systems.

Discussion of trade-offs between PM reduction and NO2 limits in retrofit emission control devices.

Correction to document GRPE/2013/6 as approved by the REC informal group to align the second warning and inducement in Annex 10 with the first warning and inducement.

Planned schedule for reaching approval of the new UN Regulation on retrofit emissions control devices and its second phase amendment.

Discussion items for the 16th REC session concerning stringency requirements and safeguards against reversing particulate filters.

Project schedule for development of the new regulation on retrofit emissions control devices.

Explanatory charts for the draft new regulation on retrofit emissions control devices.

Draft text of the planned ‘phase 2’ amendment to the new regulation on retrofit emissions control devices presently in its final steps towards adoption.

Working draft of the proposed new UN Regulation on retrofit emissions control devices pursuant to the February session of the informal group of experts.

Clean copy of the draft UN Regulation on retrofit emissions control devices pursuant to the February session of the informal group of experts.

E-mail (Outlook .msg format) to the REC secretariat conveying the outcomes of a CLEPA/OICA agreement on a amendments to the draft of the proposed REC regulation.

Presentation comparing performance results of retrofit diesel particulate filters under the European Test Cycle and Worldwide Harmonized Test Cycle.

Draft of the proposed regulation pursuant to the 14th REC informal group session of 19-20 February 2013.

Marked-up version of the draft regulation pursuant to the REC informal group session of 19-20 February 2013.

Draft of the amendments pursuant to the REC informal group session of 19-20 February 2013. The amendment is being developed in parallel to the proposed REC regulation and would introduce a second phase of requirements.

Draft version of the first-phase regulation on retrofit emissions control devices pending finalization before submission to the Working Party on Pollution and Energy.

Working draft of the phase-two text (i.e., Amendment 1) of the proposed regulation on retrofit emissions control devices.

REC regulation project schedule envisioning submission of the final version of the base regulation at the November 2013 WP.29 session and submission of the second-phase Amendment 1 at the March 2014 session.

Progress report of the informal group to the Working Party on Pollution and Energy (GRPE).

Roadmap projecting adoption of the initial REC regulation by November 2014.

Editorial group draft for the 12th REC session of the regulation on uniform provisions concerning the approval of Retrofit Emission Control Devices (REC) for heavy duty vehicles, agricultural and forestry tractors and non-road mobile machinery (NRMM) equipped with Compression Ignition engines.

Rev.00 of the editorial group working draft without markups.

Clean copy for the 12th REC session of the draft Amendment 1 (with transitional provisions) to the REC regulation under development.

TNO presentation on the results of its simulation of a retrofit selective catalytic reduction system.

Draft report from the August 2012 session of the editorial working group drafting the text of the proposed retrofit emissions control device regulation. [Published with a duplicate reference number REC-12-08. Changed by GAR to REC-12-10 for convenience.]

Planning and task schedule for development of the proposed regulation on retrofit emissions control devices prior to the 12th REC informal group session.

Comments from Hungary on the working draft of the proposed regulation on retrofit emissions control devices.

Report of the proceedings from the 24-25 April 2012 session of the group.

Revised project plan for the two phases anticipated for the new regulation on retrofit emissions devices for heavy-duty vehicles.

Working draft of the “Draft new Regulation on uniform provisions concerning the
approval of Retrofit Emission Control Devices (REC) for heavy duty vehicles, agricultural and forestry tractors and non-road mobile machinery (NRMM) equipped with
Compression Ignition engines”.

Working draft of the proposal for an amendment to the regulation on retrofit emissions control devices for heavy-duty vehicles, to be submitted in a second step to increase the regulation’s stringency.

Results from the AECC Euro VI HD test program and of Euro III engine retrofitted with NOx Emission Control System.

Letter from the Retrofit Emissions Control Devices group requesting comments from Contracting Parties that expect to adopt this new regulation. The group is proposing development in two steps with higher stringency levels in the second stage; however, this requires CP support to be feasible.

Hungarian recommendations for the draft regulation on retrofit emissions control devices as presented in informal document REC-10-02.

Working draft of the proposed new “Regulation on uniform provisions concerning the
approval of Retrofit Emission Control Devices (REC) for heavy duty vehicles, agricultural and forestry tractors and non-road mobile machinery (NRMM) equipped with
Compression Ignition engines”.

Working draft for an eventual amendment to the retrofit emissions control devices regulation under development that would address particle measurement provisions.

Project schedule as of 10 April 2012 for development of the new regulation on retrofit emission control devices.

Proposals from the CECE for revisions to the draft text of the retrofit emissions control devices regulation concerning the articles on operating behavior and safety hazard, noise emissions, and installation of the devices.

OICA and Euromot response to the informal group on REC request to submit a proposal on NOx control measures based on the Euro VI and Nonroad Stage IV NOx control provisions.

Draft agenda for the 10th session of the informal group on retrofit emissions control devices to be held in Budapest.

Participants list from the 9th meeting of the Informal Group on Retrofit Emissions Control Devices.

Comments from the Engine Manufacturers Association on the draft of the proposed new regulation on retrofit emissions control devices.

Discussion document for the GRPE subgroup handling the development of a Regulation for the approval of retrofit exhaust gas after treatment systems – Chairman’s views.