Fuel dispensing filters serve as the final checkpoint before fuel enters a vehicle, making their performance critical to protecting on-board fuel systems from contaminants. As bio-fuel usage grows, water contamination has become an increasing challenge, requiring filters that can handle…

The 2024 revision of SAE J2784 brings important clarifications and corrections to the inertia dynamometer test procedure for vehicles below 4540 kg GVWR. This standard, essential for evaluating braking performance under FMVSS 135 and FMVSS 105, now provides a more…

Brake noise and vibration (NVH) events are among the most complex and subjective issues faced by automotive engineers. Without a common language, describing a specific squeal or groan can lead to confusion, wasted development time, and ineffective fixes. The SAE…

The electrical conductivity of coolant hose covers can significantly influence the durability of hose clamps in automotive cooling systems. SAE J2790-2021 provides a standardized four-wire test method to measure this resistance accurately, addressing a known failure mode where current flow…

The SAE J278-2021 standard, originally issued in 1971 and recently revised, provides comprehensive test procedures, performance requirements, and design guidelines for snowmobile stop lamps. This update aligns the standard with modern lighting practices and harmonizes it with other SAE lamp…

The SAE J2782-2019 standard provides essential performance specifications for a midsize male pedestrian research dummy, ensuring realistic and repeatable evaluations of vehicle-pedestrian interactions. This Information Report, revised from the 2010 version, encompasses both component-level and full-scale assembly biofidelity requirements, making…

Mobile air conditioning systems play a critical role in vehicle comfort and energy efficiency. To accurately evaluate their performance, SAE J2765-2017 provides a standardized test bench procedure for measuring system coefficient of performance (COP) and cooling capacity under steady-state conditions.…

SAE J2772 provides a uniform test procedure for evaluating refrigerant concentration levels inside a vehicle passenger compartment resulting from leakage of a mobile air conditioning (MAC) system. The standard includes both analytical and physical test methods, making it adaptable to…

The transition to low-global-warming-potential refrigerants in mobile air conditioning (MAC) systems brings new safety considerations. SAE J2773-2020 offers a structured framework for evaluating hazards throughout a vehicle’s lifecycle. This article summarizes the standard’s key requirements, risk scenarios for common refrigerants,…

The SAE J2754-2019 standard provides a consistent, industry-recognized method for approximating the volume of material that can be contained in a grapple mounted to an excavator and operated through its bucket linkage. This rating is based on a geometric decomposition…

The SAE J2763-2015 standard provides a reproducible method for measuring refrigerant loss from mobile air conditioning (MAC) systems using a controlled Mini-Shed chamber. By simulating real-world temperature profiles and including system seasoning, this procedure enables engineers to estimate annual emissions…

SAE J2747-2019 establishes a standardized bench test method for measuring airborne noise from positive displacement hydraulic pumps used in ground vehicle power steering systems. This recommended practice ensures consistent, repeatable sound power measurements across different test labs by specifying pump…

SAE J2748 (2006) defines a standardized set of VHDL-AMS packages for modeling statistical variations in design parameters. Designed primarily for automotive electrical, electronic, and mechatronic systems, the standard enables engineers to perform Monte Carlo simulations and extreme value analyses by…

The SAE J2750 standard, revised in February 2025, provides a uniform system for states and provinces to assign identification numbers to vehicles and watercraft that lack federally certified Vehicle Identification Numbers (VINs). By following this recommended practice, agencies can ensure…

Overview of SAE J2743_202312 SAE J2743_202312 defines a standardized methodology for rating the size of air compressors used in truck and bus brake systems. Reaffirmed in December 2023 to comply with SAE’s five-year review cycle, this recommended practice establishes a…

The SAE J2744 standard, stabilized in March 2020, specifies requirements for a built-in service port (valve assembly) used in vehicles with Enhanced Evaporative Emissions requirements and OBD II systems. The service port provides non-destructive access for testing system integrity by…

Understanding the Software Assessment Repository (SAR) The rapid growth of feature content in automotive electronics has introduced new suppliers whose software development qualifications are often unclear. To address this, SAE J2746 establishes a web-based Software Assessment Repository (SAR) where organizations…