email twitterlinkedin
Image 1
Annex 49


Annex 49: COMVEC - Fuel and Technology Alternatives for Commercial Vehicles

Purpose and Objectives

The purpose and objective of this project is to develop common test procedures for comparison of commercial heavy- and light-duty vehicles’ tailpipe emissions and energy consumption. Another purpose is to provide additional information on alternative fuels and vehicle technologies well-to-wheel energy consumption, emissions and costs to supplement the information gathered in Annexes 37, 38, 39 and 43.

In combination with the information gathered in previous Annexes, the goal of this study is optimum allocation of alternative fuels and technologies for road transport. Several governments are developing road-maps for the introduction of alternative and carbon neutral fuels. For example Sweden is aiming at a vehicle fleet independent of fossil fuels, and Finland has set a very ambitions biofuels target of 20 % by 2020. The proposed project will strongly support developing deployment strategies for alternative fuels and energies.


The modus operandi of the project is equivalent to the one used in Annex 43 “CARPO”. This means several laboratories adding to a common pool of test data by running tests according to jointly defined test programs and test protocols.

Therefore, development of common test procedures between research partners is foreseen as a key element. At least one common test cycle should be used for all vehicle categories. The project is planned to consist of eight work packages:

  • WP 0: Collection and consolidation of the existing data

  • WP 1: Development of common test procedures and protocols

  • WP 2: Vehicle testing

    • Three different vehicle categories including several alternative fuel and vehicle technologies

    • Parameters to be varied: fuel composition, driving cycle, payload (0, 50 and 100 %), environmental conditions (ambient temperature)

  • WP 3: Aggregation of well-to-tank information

    • based on test fuel matrix and information gathered in Annexes 37 and 43

  • WP 4: Regional information on transportation sectors energy options

    • Information from project participants on regional challenges and opportunities that drives the development of energy options in transportation sectors and affects to the available fuel selection. This regional information will also shed light on various alternative technology options potential in different regions.

  • WP 5: Full fuel-cycle evaluation (integration of WP2 & WP3)

    • Well-to-wheel fuel consumption, energy efficiency and emissions

  • WP 6: Life-cycle cost analysis

    • How alternative fuel and vehicle technology, together with the operation of vehicle, influences on life-cycle costs. The objective is to find a cost-effective way to reduce emissions and energy consumption in given vehicle use.

  • WP 7: Co-ordination of the project, synthesis and reporting

    • Administrative co-ordination, communication with the IEA AMF ExCo, synthesis of the data, compilation of the Final Report and dissemination of the results

Expected Results

The general outcome will be IEA sanctioned, unbiased data on the performance (energy use and emissions) of new technologies. This type of information is needed for decision makers at all levels. The goal of this project is to fill out the blank spots for commercial vehicles by applying the systematic approach used in the evaluation of technology alternatives in Annexes 37 and 43. The project will produce a written Final Report, which includes:

  • information and methodology how to test and compare commercial vehicles’ tailpipe emissions and energy consumption
  • information on alternative fuels and vehicle technologies well-to-wheel energy consumption, emission and costs
  • Overall outcome: focusing alternatives for the most suitable applications and vehicle categories
Project Duration June 2013 - December 2015
Task Sharing Canada, Chile, China, Denmark, Finland, Japan, Korea, Sweden, Thailand
Cost Sharing Norway (Observer)
Total Budget 250,000 €
Operating Agent

Dr. Nils-Olof Nylund
VTT Technical Research Centre of Finland