SAE J2601 Fueling Protocols for Light Duty Gaseous Hydrogen Surface Vehicles

North America
United States
Application Type: 
  • H2 and Fuel Cell Road Vehicles
  • Refueling / Dispensing Connections
  • Hydrogen Infrastructure
  • Hydrogen Fueling Stations & Dispensing
  • Dispensing Equipment
Society of Automotive Engineers (SAE)

SAE J2601 establishes the protocol and process limits for hydrogen fueling of light duty vehicles. These process limits (including fuel temperature, the maximum fuel flow rate, and rate of pressure increase and end 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 with 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 calculates the end-of-fill pressure 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.

Latest Published Date: 
December, 2016
Committee Information: 

Secretariat SAE

SAE: Staff Support Administration Caroline Michaels Pat Ebejer


Adopted into Japanese law for all hydrogen stations.