Status report presentation for the Working Party on Pollution and Energy.

Presentation concerning the Vehicle Energy Consumption Calculation Tool (European tool for heavy-duty vehicle CO2 testing) within the context of heavy-duty hybrid testing.

Report on the examination of methods for matching integrated power values of WHTC and WHVC by using HILS

UNECE “background note” providing information on developments in air pollution, the results of recent studies on the harmful effects of diesel exhausts, policy developments in the reduction of pollutant emissions to address health and environmental concerns.

Update on development and validation of the new hybrid heavy-duty vehicle test cycles.

Overview of current US Environmental Protection Agency heavy-duty hybrid powerpack testing activites.

Final report on the work performed by Institute for Internal Combustion Engines and Thermodynamics of the Graz University of Technology (TUG) to assess the Japanese HILS certification method within the research program on an emissions and CO2 test procedure for Heavy Duty Hybrids (HDH).

This report is the final report of the work done by the Universities of Technology in Chalmers, Graz and Vienna and research institute TNO performed within the research program on an emissions and CO2 test procedure for Heavy Duty Hybrids (HDH). This report specifically refers to Validation Test Program 1 (VTP1) under the contract for “Developing the Methodology for Certifying Heavy-Duty Hybrids based on HILS”.

Presentation concerning heavy-duty hybrids.

A word (.doc) version of the text is available here.

Japan analysis of JRC chassis dyno test results under the Validation Test Program 2.

Presentation of the results of the validation test program 1 and status of test program 2 (Chassis dyno test program at JRC, HDH drive cycle investigation, and HILS/SILS model verification) and review of open issues for drafting the GTR text.

Discussion of vehicle characteristics to be taken into account (or left out) in order to ensure an optimally harmonized set of heavy-duty vehicle test procedures for worldwide use.

Since the system output is different between WHTC, the test cycle for conventional vehicles, and WHVC, a compensation method has been proposed. JASIC reports on its verification of the compensation method and its impact on test results.

HDH drafting group working document.

Since the system output is different between WHTC, the test cycle for conventional vehicles, and WHVC, a compensation method has been proposed. JASIC reports on its verification of the compensation method and its impact on test results. (Revised version of the original document)

(Please note that there were web conference meetings that appear to have confused the meeting numbering. According to the minutes of the 15th HDH informal group session, this meeting in Brussels would be the 8th rather than the 7th session of the drafting group.)

Version 6 of the draft amendment to introduce provisions for heavy-duty hybrid vehicles and engines into Global Technical Regulation No. 4.

Amendment proposal to add test procedures for heavy-duty hybrid vehicles to the global technical regulation on eavy-duty road vehicle emissions (WHDC).