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SAE J1939-74-2021, Application – Configurable Messaging, defines the application layer for dynamically configuring messages and parameters within a J1939 network. This standard is essential for engineers working with truck and bus systems, agricultural and construction equipment, and stationary power systems.…
SAE J2600-2015 is a critical standard for the design and testing of compressed hydrogen fueling connectors, nozzles, and receptacles for surface vehicles. It ensures safe and reliable refueling by defining pressure class compatibility, dimensional requirements, and rigorous testing protocols. Why…
Understanding SAE J1113-2: Scope and Philosophy SAE J1113-2 (cancelled in 2010, superseded by ISO 11452-10) specifies conducted immunity test methods and limits for automotive electronic components, subsystems, and systems. The test is designed to inject electromagnetic energy onto each lead…
Automotive electronic systems must withstand severe electrical disturbances on power lines, such as load dump and relay switching transients. SAE J1113-11 (stabilized 2023) defines standardized bench test methods to evaluate the immunity of components to these conducted transients. This article…
Overview of SAE J728-1990 This SAE standard provides standardized names for major components specific to the scraper portion of tractor-scrapers. It references SAE J1057 for overarching terminology of earthmoving machines. The standard includes illustrative figures for different scraper types, but…
Overview and Rationale of SAE J740 SAE J740 is a surface vehicle standard that specifies the dimensions and tolerances for countersunk square holes used in cutting edges and end bits on earthmoving machinery. Originally issued in 1958, the standard was…
Industrial compressed air powers tools, conveyors, and process equipment across workshops, construction sites, and manufacturing plants. But not all compressed air is equal. Contaminants such as solid particles, water (liquid and vapor), and oil (aerosol, liquid, vapor) can degrade equipment…
When retrofitting automotive air-conditioning systems with alternative refrigerants, the compatibility of system materials becomes a critical design consideration. The SAE J1662-2011 recommended practice (Stabilized 2011) provides essential guidance on material interactions to ensure long-term reliability and safety. This article interprets…
Understanding the Standard’s Scope SAE J731-2007 was a surface vehicle standard that defined the names of major components and parts specific to loaders, a common type of earthmoving machinery. First issued in 1957 and last reaffirmed in 1985, the standard…
This article provides an overview of common port connection types used in truck, bus, truck-trailer, and converter dolly air brake systems, based on SAE J3244 (2022). Whether you’re designing a new system or maintaining existing equipment, understanding the differences between…