SAE J2601为总容积大于或等于49.7 L的车辆的氢燃料加注制定了协议和工艺限制。这些工艺限制（包括燃料输送温度、最大燃料流量、压力增加率和终止压力）受环境温度、燃料输送温度、，以及车辆压缩氢储存系统中的初始压力。SAE J2601基于使用固定压力斜坡率的查找表方法，或基于使用整个加注过程中连续计算的动态压力斜坡率的公式方法，建立标准加油协议。 这两种协议都允许在有通信或无通信的情况下加油。基于表格的协议提供了一个固定的加注结束压力目标，而基于公式的协议连续计算加注结束压力目标。对于通信燃料，本标准将与SAE J2799一起使用。氢燃料性能的一个重要因素是电站的分配设备冷却能力和由此产生的燃料输送温度。有三种燃油输送温度类别由a？T？额定值表示:T40、T30和T20，其中T40是最冷的。在参考条件下，SAE J2601的性能目标是燃油加注时间为3分钟，荷电状态（SOC）为95%至100%（有通信），这可以通过T40实现- 额定分配器。但是，如果燃油供给温度较高（T30或T20）和/或环境温度较高，加油时间可能会更长。表1描述了SAE J2601的范围以及SAE J2601系列本文件或其他文件中未来修订的潜在工作项。SAE J2601包括适用于两种压力等级（35兆帕和70兆帕）、三种燃料输送温度等级（-40摄氏度，-30摄氏度，-20摄氏度）以及49.7至248.6升（35兆帕H35和70兆帕H70）和248.6升及以上（仅H70）的压缩储氢系统尺寸（总体积分类）的协议。 SAE J2601工作的未来版本可能包括更高的燃油输送温度（-10°C和环境温度）以及摩托车和其他应用的更小总容量。本文中的加油协议是根据第7节和附录a中描述的一组关键假设制定的。在开发和实施车载压缩氢存储系统时，应仔细考虑这些假设。尤其是，应进一步评估性能不在表A3参数范围内的储氢系统，以确认其与本文协议的兼容性。

SAE J2601 establishes the protocol and process limits for hydrogen fueling of vehicles with total volume capacities greater than or equal to 49.7 L. 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. For fueling with communications, this standard is to be used in conjunction with SAE J2799.An important factor in the performance of hydrogen fueling is the station¿¿¿s dispensing equipment cooling capability and the resultant fuel delivery temperature. There are three fuel delivery temperature categories denoted by a ¿¿¿T¿¿¿ rating: T40, T30, and T20, where T40 is the coldest. Under reference conditions, SAE J2601 has a performance target of a fueling time of 3 minutes and a state of charge (SOC) of 95 to 100% (with communications), which can be achieved with a T40-rated dispenser. However, with higher fuel delivery temperature dispenser ratings (T30 or T20) and/or at high ambient temperatures, fueling times may be longer.Table 1 depicts the scope of SAE J2601 and potential work items for future revisions within this or other documents of the SAE J2601 series. SAE J2601 includes protocols which are applicable for two pressure classes (35 MPa and 70 MPa), three fuel delivery temperatures categories (-40 ¿¿C, -30 ¿¿C, -20 ¿¿C) and compressed hydrogen storage system sizes (total volume classification) from 49.7 to 248.6 L (35 MPa ¿¿¿ H35, and 70 MPa ¿¿¿ H70), and from 248.6 L and above (H70 only). Future versions of SAE J2601 work may incorporate warmer fuel delivery temperatures (-10 ¿¿C and ambient) and smaller total volume capacities for motorcycles and other applications.The fueling protocols herein were developed based on a set of key assumptions described in Section 7 and Appendix A. These assumptions should be carefully considered in the development and implementation of an on-board compressed hydrogen storage system. In particular, hydrogen storage systems with properties which do not fall within the parameters in Table A3 should be further evaluated to confirm compatibility with the protocols herein.