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Worldwide harmonized Motorcycle emission Test Cycle (WMTC)

Informal document No . GRPE-61-23 (61st GRPE, 11-14 January 2011, agenda item 4). Worldwide harmonized Motorcycle emission Test Cycle (WMTC). Status report WMTC Inf Gr meeting on 13/14 Sept 2010 Technical Report (ECE/TRANS/WP.29/2009/133)

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Worldwide harmonized Motorcycle emission Test Cycle (WMTC)

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  1. Informal document No. GRPE-61-23 (61st GRPE, 11-14 January 2011, agenda item 4) Worldwide harmonized Motorcycle emission Test Cycle(WMTC) Status report WMTC Inf Gr meeting on 13/14 Sept 2010 Technical Report (ECE/TRANS/WP.29/2009/133) Corrigenda related to gearshift (ECE/TRANS/WP.29/GRPE/2011/7) Amendment related to performance requirements (ECE/TRANS/WP.29/GRPE/2011/4)

  2. WMTC Inf Gr meeting on 13/14 Sept 2010 • Hosted by EC in Brussels • Key WMTC Inf Gr members discussed and agreed outline for most appropriate combination of principal and alternative performance requirements with corresponding reference fuel specification • Continued bilateral discussions on gearshift prescriptions • Drafting group prepared 2 draft official documents for review and comment by WMTC Inf Gr prior to submission to GRPE • Identification of durability, evaporative emission, … as items for future consideration (phase 3) Note: Final meeting report circulated to WMTC Inf Gr members

  3. Technical Report (ECE/TRANS/WP.29/2009/133) • Considered by WMTC Inf Gr as still sufficient and appropriate to accompany the proposed sets of performance requirements http://www.unece.org/trans/doc/2009/wp29/ECE-TRANS-WP29-2009-133e.pdf

  4. Corrigenda related to gearshift (ECE/TRANS/WP.29/GRPE/2011/7) • Corrections related to • Upshift speed equation/formula • Rounding of shift speed calculation results • Clarifications of gearshift modification rules (with examples) http://www.unece.org/trans/doc/2011/wp29grpe/ECE-TRANS-WP29-GRPE-2011-07e.pdf

  5. Amendment on performance requirements (ECE/TRANS/WP.29/GRPE/2011/4) • Performance requirements • Japanese limits as principal limits • 3 sets of alternatives limits (Euro 3; Indian and US) • Reference fuel • Existing WMTC reference fuel as default for principal limits with option to use Japanese reference fuel (or other reference fuel with demonstrated equivalence in terms of emissions) • Existing WMTC reference fuel also linked to Indian and Euro 3 alternative limits • US reference fuel linked to US alternative limits http://www.unece.org/trans/doc/2011/wp29grpe/ECE-TRANS-WP29-GRPE-2011-04e.pdf

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