Society of Automotive Engineers
Interface Working Group 

 Mission:  Develop standards to coordinate between fuel suppliers and vehicle manufacturers to ensure safe, efficient and customer friendly delivery of fuel to fuel cell vehicles. 
Identification SAE J 2600
    Compressed Hydrogen Vehicle Fueling Connection Devices
     (defines geometries of receptacles for different pressure levels)

 
Scope SAE J2600 applies to design, safety and operation verification of Compressed Hydrogen Surface Vehicle (CHSV) refueling connection devices hereinafter referred to as nozzle and receptacle. CHSV Refueling nozzles and receptacles shall consist of the following components, as applicable. Alternatives may be used as long as the alternative geometries shall not be interchangeable with the standard geometry specified in this SAE Standard and the standard geometry in Section 6 provides insufficient flow rates: a. Receptacle and protective cap (mounted on vehicle) (see Section 6 and 7); b. Nozzle (see Section 5).

This document applies to devices which have Working Pressures of 25 MPa, 35 MPa, 50 MPa or 70 MPa hereinafter referred to in this document as the following (see 9.1c): H25 - 25 MPa at 15 \mDC; H35 - 35 MPa at 15 \mDC; H50 - 50 MPa at 15 \mDC; H70 - 70 MPa at 15 \mDC.

This document applies to nozzles and receptacles which (1) prevent hydrogen fuelled vehicles from being refueled by dispenser stations with Working Pressures higher than the vehicle; (2) allow hydrogen vehicles to be refueled by dispenser stations with Working Pressures equal to or lower than the vehicle fuel system Working Pressure, (3) prevent hydrogen fuelled vehicles from being refueled by other compressed gases dispensing stations and (4) prevent other gaseous fuelled vehicles from being refueled by hydrogen dispensing stations.

All dimensions used in this document are in metric units [International System of Units (SI)].

For the purposes of this document, compressed hydrogen gas should meet the requirements of ISO 14687 Hydrogen fuel - Product specification.

All references to pressures (MPa) throughout this document are to be considered gauge pressures unless otherwise specified. All test procedures listed in this document are design verification test procedures unless otherwise noted. All products must pass all tests to be considered to have met this design standard.

 
Status Published in October 2002. Available at www.sae.org
Presently being harmonized by the Interface Working Group to ISO 17268 ( see ISO TC197 WG#5).    

Provision for 700 bar refueling is also included. 

The draft has moved from the Working Group, and is being balloted by the fuel cell committee.  If approved, it will then be balloted by the Motor Vehicle Council.  The document would then become a product safety standard; the first for hydrogen dispenser hardware.
Committee
Information
Chairman William Collins
Secretariat SAE
Secretary  
Identification SAE TIR J2601
    Fueling Protocols for Light Duty Gaseous
    Hydrogen Surface Vehicles

 
Scope SAE TIR J2601 establishes safety limits and performance requirements for gaseous hydrogen fuel dispensers. The criteria include maximum fuel temperature at the dispenser nozzle, the maximum fuel flow rate, the maximum rate of pressure increase and other performance criteria based on the cooling capability of the station’s dispenser. This document establishes fueling guidelines for “non-communication fueling” in the absence of vehicle communication and guidelines for “communication fueling” when specified information is transmitted from the vehicle and verified at the dispenser. The process by which fueling is optimized using vehicle-transmitted information is specified. This document provides details of the communication data transmission protocol. The mechanical connector geometry is not covered in this document. SAE J2600 defines the connector requirements for fueling vehicles operating with a nominal working pressure of 35 MPa. SAE TIR J2799 defines the mechanical connector geometry for fueling vehicles to 70 MPa and also provides specifications for the hardware for vehicle-to-station dispenser communication. It is expected that SAE J2600 will be revised to include the receptacle content of SAE TIR J2799, in which case the resulting SAE J2600 will provide connector hardware requirements for gaseous hydrogen fueling at all working pressures. The vehicle-to-station communication portion of SAE TIR J2799 is to be integrated into SAE TIR J2601 in the next revision, and it is planned that the 70 MPa nozzle in SAE TIR J2799 will be replaced by SAE J2600. This document applies to light duty vehicle fueling for vehicles with storage capacity from 1 to 10 kg for 70 MPa and 1 to 7.5 kg for 35 MPa. It is intended to be revised in the next two years to include separate requirements for fueling heavy duty vehicles and motorcycles, forklifts and also for residential hydrogen fueling appliances. Since there is a significant difference between the onboard storage capacity of heavy-duty and light-duty vehicles, the performance specifications could be different. This document applies to fueling using an average pressure ramp rate methodology which is to be verified with a hydrogen dispenser test apparatus as defined CSA HGV 4.3. This document includes provisions for optional alternative communications fueling protocols and is planned to be revised in the future to include specifications for additional fueling processes to allow more freedom than the present document. New dispenser protocol proposals would need to be verified with data and experience demonstrating the fueling algorithm’s capability to operate within the constraints of Section 5. SAE J2601 Issued PropDft MAR2010 Page 3 of 54 It is expected that this document will be used in conjunction with the CSA HGV 4.3 Hydrogen Dispenser Temperature Compensation Confirmation Report, which will to provide a test method and equipment specification for confirming that the performance of a fuel dispenser is consistent with the requirements of SAE TIR J2601. This document establishes a formal industry-wide fueling guideline that supersedes all temporary guidelines informally established by non-ANSI-certified organizations, such as the vehicle manufacturer (OEM) document Fueling Specification for 70 MPa Compressed Hydrogen Vehicles, Version A posted on the NextEnergy website and all CaFCP Fueling Protocols. It is understood, however, that other fueling protocols that differ from the look-up table-based protocol specified in this document may be used when the station provider has (a) an agreement from a vehicle manufacturer that the protocol is appropriate for a particular vehicle system, and (b) a method of identifying the particular vehicle and limiting the protocol to that vehicle is utilized in the station design and operation. The intent is that developments be brought to the SAE TIR J2601 team to enable modification of the document to allow for a more performance based approach for future revisions. The current document is table-based, providing concise performance targets and dispenser performance specifications for both communicated and non communicated fills as detailed in Sections 5 through 9. This TIR is intended to evolve over time before it is standardized. The goal is to establish a protocol guideline in the initial publication and request industry to give feedback and improvement suggestions before standardizing within a two-year timeframe.
Status

Published March 16, 2010. Available from www.sae.org

A Revision is underway.
Committee
Information
Chairman Jesse Schneider
Secretariat SAE
SAE: Staff Support
            Administration		 Caroline Michaels
Pat Ebejer
Identification

SAE TIR J2601/2
     Fueling Protocols for Heavy Duty Gaseous Hydrogen Surface Vehicles (buses)

 
Scope Establish the safety limits and performance requirements for 35 MPa gaseous hydrogen fuel dispensers for heavy duty vehicle fueling (with tank system storage capacity >10kg). The criteria include maximum fuel flow rate and other performance criteria.
Status

Initiated March 7, 2011. Target: 2013.
Committee
Information
Chairman Nico Bouwkamp
Secretariat SAE
SAE: Staff Support
            Administration		 Pat Ebejer
Identification

SAE TIR J2601/3
     Fueling Protocols for Gaseous Hydrogen Powered Industrial Trucks (forklifts)

 
Scope This document provides performance requirements for fueling vehicles including a pressure test method to check for leaks, pressure limits for the vehicle fueling system and target pressure compensation limits to manage the effects of vehicle tank temperature rise during the fueling process. Three fueling options for fueling are available for the dispenser provider: (1) slow flow to service pressure only, (2) a simple fixed orifice flow control system intended to provide 85 to 95% SOC fills at a nominal 500 to 1000 grams per minute fueling rate and (3) a formula based end of fill protocol based on the Honda MC method of calculating vehicle end temperature and target fill pressure. These fueling methods do not require electronic communications between the vehicle and the dispenser. All three dispensing protocols result in similar fueling performance from the vehicle perspective. These fuelling protocols are suitable for tanks as small as 20 liter water volume, tanks as large as practical, and may be used for fueling stationary hydrogen storage as well as vehicle tank fueling systems. The intent of this document is to: (A) to allow the deployment of simple but safe and effective dispenser system for HPIT and stationary hydrogen storage system fueling and (B) enable the advanced user of the document to be able to characterize vehicle fueling systems with an distinct MC number and then be able to fit the range of captive fleet based vehicles into common fuel dispensing protocol with a higher target SOC than achievable with the simpler systems.
Status

Initiated March 7, 2011. Target: 2012.                          

Committee
Information
Chairman Robert Boyd
Secretariat SAE
SAE: Staff Support
            Administration		 Pat Ebejer
Identification SAE J2719
    Hydrogen Quality Guideline
    For Fuel Cell Vehicles

 
Scope

This Standard provides background information and a hydrogen fuel quality standard for commercial proton exchange membrane (PEM) fuel cell vehicles. This Report also provides background information on how this standard was developed by the Hydrogen Quality Task Force (HQTF) of the Interface Working Group (IWG) of the SAE Fuel Cell Standards Committee.

 

 
Status

Published in September 2011. (Originally issued in 2005, and revised in 2008.) Available at  www.sae.org.

 

This document is now the commodity standard for hydrogen vehicle fuel, and will also be adopted by the State of California

 

 
Committee
Information
Chairman Mike Steele
Secretariat SAE
Secretary  
Identification SAE J2783
    Liquid Hydrogen Surface Vehicle
    Refueling Connection Devices

 
Scope This standard will be the liquid counterpart to J2600.
Just as J2600 is related to ISO 17268,  J2783 will be related to ISO 13984.
Status New activity.
No activity as of January 2012.
Identification J2799 - TIR
     70 MPa Compressed Hydrogen
    Surface Vehicle Refueling Connection Device
    and Optional Vehicle to Station Communication

 
Scope This technical information report specifies a guideline for the hardware requirements for fueling a Hydrogen Surface Vehicle (HSV) with compressed hydrogen storage at a Nominal Working Pressure of 70MPa. It contains a description of the receptacle geometry and optional communication hardware and communications protocol to refuel the HSV. The intent of this document is to enable harmonized development and implementation of the hydrogen fueling interfaces. It is intended to be utilized for the hydrogen vehicle field evaluation until enough information is collected to enable standardardization. The receptable portion of this TIR is to be reevaluated utilizing international field data in approximately 2 years and subsequently superseded by J2600 in the 2009 timeframe. At that time, input would be gathered from international locations through the representation in the SAE Fuel Cell Committee in order to confirm the final decision regarding the direction of the receptacle and communications standard. The communications portion of the TIR is also to be reevaluated utilizing international field data and subsequently superseded by J2601. It is anticipated that the communications protocol and hardware could be standardized before the above mentioned timeframe. It is not the intent of this document to imply a position regarding the commercial fueling protocol, communications, or non-communication strategy, but simply serves as a reference for the receptacle hardware and IRDA communications if this strategy is selected. In addition, it is not intended to be referenced by other Standard and/or Code organizations.
Status Published May 2007. Available at www.sae.org
A Revision is underway.