SAE J2807:2020 pdf free
SAE J2807:2020 pdf free.Performance Requirements for Determining Tow-Vehicle Gross Combination Weight Rating and Trailer Weight Rating
This section provides specifications and/or requirements for standard trailers, trailer hitch equipment, and combination vehicle connections. It also provides performance requirements for tow-vehicle structure, propulsion system performance,and combination vehicle handling and braking. Tow-vehicle GCWR is qualified by conformance to the performance requirements following in this section. Should the tow-vehicle be capable of different GCWR values throughout the various tests in this section, the actual GCWR will be the least of the values attained. The performance requirements of this document are not intended to be used to establish minimum acceptable values for various aspects of trailering. The performance requirements and metrics specified in this document are selected considering carefully controlled specific trailers,combination load conditions， and driving maneuvers to provide for objective comparisons of tow-vehicle performance. The full range of acceptable trailer loading conditions, trailer types, and driving maneuvers to be experienced by actual customers may produce some lower performance values that remain in the range of acceptability. There is nothing in this document that precludes the use of analytical methods to confirm conformance to requirements. It is presumed that analytical methods, when used, should produce results that are equivalent to physical test results. Physical test results, when available, supersede analytical method results.
This section defines representative “standard” trailers, connections and ballast conditions for test purposes. This is not intended to define“worst-case” trailer loading or specifications, or to establish limits in trailer types that can be towed. The frontal area consideration is required only for propulsion system testing; effective tongue length consideration is required only for dynamics testing. Trailers to be used for dynamics purposes should be equipped with limited optional equipment in order to minimize trailer weight and maximize ballast flexibility. Additional trailer, hitch connection, and ballast requirements for testing various performance attributes (propulsion, handling, and braking) may be found in those specific sections. The frontal area requirements account for entire trailer frontal silhouette to the ground plane.SAE J2807 pdf free download.
