🛠️ Note: this article focuses on engineering interpretation, not clause-by-clause translation. The SAE J2847/5 standard, published in October 2023, defines the communication requirements for plug-in electric vehicles (PEVs) to interact with customers for alternating current (AC) vehicle-to-load (V2L) and vehicle-to-vehicle…

Why Communication Protocols Matter for Wireless Power Transfer Wireless power transfer (WPT) for electric vehicles offers convenience and automation, but safe and efficient charging depends on robust communication between the vehicle (VA) and the ground assembly (GA). SAE J2847/6 defines…

SAE J2843-2019 defines the minimum requirements for equipment used to recover, recycle, and recharge R-1234yf refrigerant in mobile air-conditioning (MAC) systems. This standard, revised in July 2019, addresses the unique challenges of handling mildly flammable (ASHRAE Class 2L) refrigerants while…

🛠️ The SAE J2845-2021 standard establishes the minimum content requirements for training programs aimed at technicians who service mobile air conditioning (MAC) systems in passenger cars and light duty trucks. Proper training is essential to ensure that refrigerants—including R-12, R-134a,…

The 2023 revision of SAE J2847/3 marks a significant milestone in enabling plug-in electric vehicles (PEVs) to act as distributed energy resources (DERs). This recommended practice defines the communication requirements for vehicle-to-grid (V2G) and vehicle-to-home (V2H) functions, leveraging the IEEE…

As plug-in electric vehicles (PEVs) become more prevalent, ensuring reliable communication between the vehicle and the electric vehicle supply equipment (EVSE) during charging sessions is critical. SAE J2836/4 establishes the diagnostic use cases that define how faults are detected, communicated,…

From Standard M12 to HDM12: A Heavy-Duty Upgrade High-speed data communication is essential in modern heavy-duty vehicles and off-highway machinery. Systems operating above 10 Mbps require robust connector interfaces that can withstand harsh environments. SAE J2839-2020 addresses this need by…

SAE J2832-2019 covers stress relieved, electric resistance welded flash controlled single wall high strength low alloy steel tubing. With a minimum tensile strength of 690 MPa, this tubing is designed for high-pressure hydraulic lines and other applications that demand bending,…

Scope and Key Specifications SAE J2833-2018 covers stress relieved annealed electric resistance welded and cold-drawn single-wall high strength low alloy steel hydraulic tubing. The material achieves a minimum 690 MPa tensile strength through micro-alloy composition and controlled processing. The tubing…

SAE J2836-2 is an SAE Information Report that establishes the use cases and general information for communication between plug-in electric vehicles (PEVs) and off-board DC chargers. This standard focuses on conductive DC charging, detailing the communication sequences, inband signaling, and…

This SAE Recommended Practice establishes standardized test procedures for determining exhaust sound pressure levels of stationary on-highway motorcycles. Developed as a practical alternative to SAE J1287 for roadside enforcement, it ensures repeatable results that correlate with EPA passby noise requirements…

🛠️ Note: this article focuses on engineering interpretation, not clause-by-clause translation. In-vehicle information systems (IVIS) are integral to modern driving, providing critical data ranging from navigation instructions to vehicle status alerts. However, poorly designed alphanumeric messages can significantly increase driver…

SAE J2803-2020 defines a critical boundary line for achieving dimensional compatibility between air disc brake calipers and 22.5 x 8.25 inch disc wheels in truck and bus applications. This recommended practice addresses the minimal wheel envelope including valve stems, ensuring…

SAE J2805 is the technical mirror of ISO 362-1, providing a performance-based and technology-neutral method to measure the 90th percentile exterior sound emission of road vehicles during acceleration. The test procedure is rooted in extensive statistical investigations of real traffic,…

The SAE J2810 standard defines the minimum performance and operating requirements for equipment used to recover HFC-134a (R-134a) from automotive air-conditioning systems. Issued by SAE International and reaffirmed in 2022, it supersedes the earlier J1732 standard and is crucial for…

The SAE J280-2023 standard provides manufacturers and engineers with a complete framework for snowmobile headlamp design, testing, and installation. It harmonizes aiming procedures with other SAE lighting standards and introduces the use of low beam cutoff (VOM) aiming. This article…

The SAE J2800 recommended practice provides a standardized laboratory procedure for evaluating the combined corrosion and fatigue performance of vehicle suspension coil springs. This test is designed for A-to-B comparison of a proposed design against a field-validated benchmark, covering general,…