SAE Update - April 2024 - 42

STANDARDS & COMMITTEES
Future fuels: What SAE J2601-5 means for
industry amidst growing interest in hydrogen
The new SAE Technical information report, SAE J2601-5, outlines hydrogen fueling protocols for medium- and heavy-duty vehicles.
be used with the H70 coupling, the FM120
is to be used with the H35HF coupling, and
the FM300 is to be used with an H70HF
coupling, which is not yet standardized but
is expected to be within the next couple of
years. These coupling types are defined in
the SAE J2600 and ISO 17268 standards.
The H35 FM120, H70 FM90, and H70
FM300 protocols are based on an improved
version of the MC Formula control structure
first introduced in the 2016 version of SAE
J2601 and named MC Formula High-Flow
General (MCF-HF-G).
The MCF-HF-G fueling protocol measures
the hydrogen fuel delivery temperature and
accumulated mass to precisely determine
an appropriate pressure ramp rate for each
point in time during the fueling period. This
42 April 2024
formula-based control algorithm facilitates
the fastest fueling which is safely possible
under the current conditions of the fueling
period.
The MCF-HF-G fueling protocol also
allows for a wide range fuel delivery
temperature, from 20 to -40 °C for the H35
FM120 protocol and from 0 to -40 °C for
the FM300 protocol. In addition to the
MCF-HF-G protocol, SAE J2601-5 also
includes an FM90 table-based fueling
protocol named Category D HF, which is a
modified version of the CHSS Capacity
Category D fueling protocol from the 2020
revision of SAE J2601.
The hydrogen fueling protocols in SAE
J2601-5 are " general purpose " protocols,
meaning they are designed to be
UPDATE
GovTech

https://www.sae.org/standards/content/j2600_201510/

SAE Update - April 2024

Table of Contents for the Digital Edition of SAE Update - April 2024

SAE Update - April 2024 - Cov1
SAE Update - April 2024 - Cov2
SAE Update - April 2024 - 1
SAE Update - April 2024 - 2
SAE Update - April 2024 - 3
SAE Update - April 2024 - 4
SAE Update - April 2024 - 5
SAE Update - April 2024 - 6
SAE Update - April 2024 - 7
SAE Update - April 2024 - 8
SAE Update - April 2024 - 9
SAE Update - April 2024 - 10
SAE Update - April 2024 - 11
SAE Update - April 2024 - 12
SAE Update - April 2024 - 13
SAE Update - April 2024 - 14
SAE Update - April 2024 - 15
SAE Update - April 2024 - 16
SAE Update - April 2024 - 17
SAE Update - April 2024 - 18
SAE Update - April 2024 - 19
SAE Update - April 2024 - 20
SAE Update - April 2024 - 21
SAE Update - April 2024 - 22
SAE Update - April 2024 - 23
SAE Update - April 2024 - 24
SAE Update - April 2024 - 25
SAE Update - April 2024 - 26
SAE Update - April 2024 - 27
SAE Update - April 2024 - 28
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SAE Update - April 2024 - 33
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SAE Update - April 2024 - 37
SAE Update - April 2024 - 38
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SAE Update - April 2024 - 40
SAE Update - April 2024 - 41
SAE Update - April 2024 - 42
SAE Update - April 2024 - 43
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