CSA HGV 4.3:2016 pdf download.Test methods for hydrogen fueling parameter evaluation
1.1 CSA HGV 4.3 establishes the test method, criteria, and apparatus to evaluate a field installed hydrogen fueling station dispensing system (hereinafter referred to as a "dispenser") as it relates to achieving the protocols specified in the SAE J2601 Standard, Fueling Protocols for Light Duty Gaseous Hydrogen Surface Vehicles, and the SAE J2799 Standard, Hydrogen Surface Vehicle to Station Communications Hardware and Software with light duty vehicle hydrogen storage systems less than 248.6 liters (10 kg H70). The testing evaluation applies to dispensers designed to fill vehicle storage systems following the prescribed protocols defined in SAE J2601 that targets rapid fills, while respecting temperature,pressure, and fuel density safety limits.
Note: This Standard is a minimum requirement. Manufacturers may take additional safety precautions.
4 General fueling protocol description
As discussed in Clause 1, this Standard establishes the test method, criteria, and apparatus to evaluate a field installed hydrogen dispenser based upon meeting the requirements in SAE J2601 for the fueling limits and protocol, and SAE J2799 for the vehicle to station communications.
SAE J2601 contains the general requirements that all fueling protocols are required to meet, such as pressure, temperature, density, and flow limits for light duty vehicles. It also contains the requirements that only a specific fueling protocol shall meet. At the time of publication of this Standard, SAE J2601 contained only the table-based fueling protocol, but additional fueling protocols may be added in the future.
SAE J2799 specifies the physical and functional requirements of the communication system between the vehicle and station during fueling, as well as defining the data fields. SAE J2601 dictates the actions the dispenser takes in response to receiving a specific data value from the vehicle.
This Standard assumes the dispenser manufacturer and test agency are familiar with both SAE documents, and is structured in a complementary format. Clause 5 contains the overall requirements that apply to all fueling protocols, and Clause 7 contains the fault tests for these general requirements.
Clause 8 provides the protocol and communication requirements and tests for a dispenser that uses the table based fueling protocol.
7.1 General
The following tests are intended to determine if the dispenser will react properly to exceeding the limits listed in Clause 5. For some requirements, a separate test, where a fault is purposely simulated, is not performed. Instead, the parameter shall be monitored during the fueling protocol testing (e.g.,Clause 8.8) to confirm it is not exceeded. Table 2 below summarizes which requirements are specifically tested and those which are monitored during the fueling protocol testing.CSA HGV 4.3 pdf download.