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| Document Title | Heavy-duty hybrid test procedures | ||||||||
| Reference Number | HDH-09-09 | ||||||||
| Date |
26 Mar 2012
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| Summary | Presentation on US EPA hybrid-engine powerpack testing, future challenges, and comparison with GTR program. | ||||||||
| Source(s) | Cummins | ||||||||
| Rulemaking Area(s) | Heavy-duty Hybrids (HDH) | ||||||||
| Meeting(s) | |||||||||
| Downloads | |||||||||
| UNECE server | .pdf format | ||||||||
| Excerpts from session reports related to this document | |||||||||
| HDH | Session 9 | 21-23 Mar 2012 |
Mr. Andreae presented working paper HDH-09-09. He gave an overview of the powerpack test procedures within the EPA GHG rule. The key challenge for a vehicle independent hybrid certification is the torque curve definition for the hybrid, since the torque curve may depend on the energy storage system state. Examples of torque curve mapping are shown on pages 6 to 8. The major challenge for the future GHG rule is the alignment of vehicle and engine test cycles. EPA rulemaking is therefore facing many of the same challenges as have been raised in the HDH group. A vehicle independent hybrid certification option is seen as the most practical solution for the HD market. |
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