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This SAE Recommended Practice establishes uniform chassis dynamometer procedures for testing fuel cell and hybrid vehicles powered by compressed gaseous hydrogen. The standard utilizes US Federal Emission Test Procedures, specifically the UDDS and HFEDS schedules, to determine fuel consumption and range while eliminating variations associated with track testing.

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Abstract

This SAE Recommended Practice establishes uniform procedures for testing fuel cell and hybrid fuel cell electric vehicles, excluding low speed vehicles, designed primarily for operation on the public streets, roads and highways. The procedure addresses those vehicles under test using compressed hydrogen gas supplied by an off-board source or stored and supplied as a compressed gas onboard. This practice provides standard tests that will allow for determination of fuel consumption and range based on the US Federal Emission Test Procedures, using the Urban Dynamometer Driving Schedule (UDDS) and the Highway Fuel Economy Driving Schedule (HFEDS). Chassis dynamometer test procedures are specified in this document to eliminate the test-to-test variations inherent with track testing, and to adhere to standard industry practice for fuel consumption and range testing. Communication between vehicle manufacturer and the governing authority is essential when starting official manufacturer in-house and official government confirmatory testing that incorporates this practice.

Key findings

  • The practice applies exclusively to public road vehicles excluding low-speed applications.
  • Testing can utilize hydrogen supplied from an off-board source or stored onboard as compressed gas.
  • Chassis dynamometer testing is mandated to ensure consistency and adherence to industry standards.

Keywords

Fuel cellsRange (aeronautics)Hydrogen fuelFuel efficiencyHydrogenCompressed natural gas

Identifiers

DOI
10.4271/j2572_202402
Journal
Unknown journal
Year
2024