SAE J2601
Fueling Protocols for Light Duty Gaseous
    Hydrogen Surface Vehicles

          United States & Other Locales



Society of Automotive Engineers

Fuel Cell Standards Committee - Interface Working Group



SAE J2601
Fueling Protocols for Light Duty Gaseous
    Hydrogen Surface Vehicles



SAE J2601 establishes the protocol and process limits for hydrogen fueling of light duty vehicles. These process limits (including the fuel delivery temperature, the maximum fuel flow rate, the rate of pressure increase and the ending pressure) are affected by factors such as ambient temperature, fuel delivery temperature and initial pressure in the vehicle’s compressed hydrogen storage system. SAE J2601 establishes standard fueling protocols based on either a look-up table approach utilizing a fixed pressure ramp rate, or a formula based approach utilizing a dynamic pressure ramp rate continuously calculated throughout the fill. Both protocols allow for fueling with communications or without communications. The table-based protocol provides a fixed end-of-fill pressure target, whereas the formula-based protocol calculates the end-of-fill pressure target continuously.


Published as a Technical Information Report (TIR) in March 2010. Updated based on improved fuel simulation models and testing at hydrogen stations, and re-published as a standard in July 2014.  Revision A published in December 2016.


Available from

Adopted into Japanese law for all hydrogen stations.

Next edition in balloting, January 2020.



Steven Mathison



SAE: Staff Support

Caroline Michaels
Pat Ebejer