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Vehicle Power Test for Electrified Powertrains
- Ground Vehicle Standard
- J2908_201709
- Issued
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This document provides test methods for evaluating the maximum power of electrified vehicle powertrain systems by direct measurement at the drive wheel hubs or axles. Additional tests are included specifically for PHEVs to measure electric-only propulsion power and for HEVs to measure electric power assist and regenerative braking. The testing requires either a chassis or hub dynamometer for all driven wheels. Results are processed to provide fair and consistent comparisons of power capabilities among different designs of electrified powertrains. Tests can also be performed on conventional vehicles if precise comparisons to electrified vehicles are desired.
Rationale
Power ratings provided for ICE vehicles are obtained from component-level tests of the engine power output (SAE J1349). However, electrified powertrains often consist of multiple power-producing components that may include an engine and one or more electric motors. These components are coupled in a wide variety of configurations and can operate as a system to produce propulsion power in ways that are not predictable a priori. As a result, a new power test procedure is needed for all types of electrically propelled vehicles to measure and report powertrain power as a full system. This powertrain-level testing approach addresses the challenge of providing fair and unbiased comparisons among all vehicle powertrain designs.
Recommended Content
| Ground Vehicle Standard | Performance Characterization of Electrified Powertrain Motor-Drive Subsystem |
| Ground Vehicle Standard | Determination of the Maximum Available Power from a Rechargeable Energy Storage System on a Hybrid Electric Vehicle |
Topic
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Issuing Committee
The Hybrid Technical Standards Committee reports to the Powertrain Systems Group of the Motor Vehicle Council. The Committee is responsible for developing and maintaining SAE Standards, Recommended Practices, and Information Reports related to the field of hybrid vehicle technology. The following topics are within the scope of this committee's work: ¿ safety aspects of hybrid systems in vehicles ¿ test procedures to establish the performance of hybrid systems and components ¿ nomenclature ¿ vehicle interface and serviceability requirements Participants in the SAE Hybrid Technical Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.
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