总重4540 kg以上车辆的FMVSS 1-5惯性制动功率机试验程序

[中文适用范围]： 本推荐做法源自 FMVSS 105 车辆测试，适用于配备液压行车制动器的 GVWR 超过 4540 千克（10000 磅）的两轴多用途乘用车@卡车@和公共汽车。有两种主要的测试序列：当并非所有信息均可用或需要评估不同输入下的制动输出时，用于通用测试条件的开发测试序列；以及当制动压力的车辆参数作为制动踏板输入的函数时的 FMVSS 测试序列提供力和车辆特定的负载和制动分配。测试序列源自联邦机动车辆安全标准 105（以及可选部分的 121），作为使用适当的制动硬件和测试参数时的单端惯性测功机测试程序。此推荐做法为原始设备制造商 (OEM)@制动器和零部件制造商@以及售后供应商@在实验室控制的测试环境中提供与制动器输出、摩擦材料有效性@和拐角性能相关的结果。测试序列包括不同的动态条件（制动速度@温度@和制动历史，如FMVSS 105中所述）；惯性载荷相当于车辆的 LLVW 和 GVWR；完全运行@部分故障@和失败的系统条件。包括 FMVSS 105 的所有适用部分。可选部分包括：驻车制动输出@水回收@TP-121D测功机延迟@和32公里/小时（20英里/小时）停止，以模拟联邦汽车运输安全管理局（FMCSA）的要求。本推荐做法不评估或量化其他制动系统特性，例如磨损@噪音@抖动@ABS性能@或极端温度或速度下的制动。最低性能要求不属于本推荐实践的一部分。当使用适当的车辆信息和车辆动力学模型时，可以与测试请求者协调，将与 FMVSS 105 车辆测试的停止距离或等效减速度水平相关的最低要求的一致性和通过/失败裕度作为项目的一部分进行评估。尽管如此，@此程序及其结果并不能取代车辆级测试，以证明符合 FMVSS（液压制动系统为 105@或气液制动系统为 121）@或其他强制性法规（如 ECE R13 或同等法规） 。目的 本程序的目的是评估制动角总成在符合 FMVSS 105 车辆测试程序（适用于 GVWR 以上的应用）的条件下的性能。 [外文原描述]： This SAE Recommended Practice is derived from the FMVSS 105 vehicle test and applies to two-axle multipurpose passenger vehicles, trucks, and buses with a GVWR above 4540 kg (10000 pounds) equipped with hydraulic service brakes. There are two main test sequences: the Development Test Sequence for generic test conditions when not all information is available or when an assessment of brake output at different inputs is required, and the FMVSS Test Sequence when vehicle parameters for brake pressure as a function of brake pedal input force and vehicle-specific loading and brake distribution are available. The test sequences are derived from the Federal Motor Vehicle Safety Standard 105 (and 121 for optional sections) as single-ended inertia-dynamometer test procedures when using the appropriate brake hardware and test parameters. This recommended practice provides Original Equipment Manufacturers (OEMs), brake and component manufacturers, and aftermarket suppliers with results related to brake output, friction material effectiveness, and corner performance in a laboratory-controlled test environment.The test sequences include dynamic conditions (braking speeds, temperature, and braking history as outlined in FMVSS 105), inertia loads equivalent to the vehicle’s LLVW and GVWR, and fully operational, partial failure, and failed system conditions. All applicable sections of FMVSS 105 are included. Optional sections include parking brake output, water recovery, TP-121D dynamometer retardation, and 32 km/h (20 mph) stops to simulate Federal Motor Carrier Safety Administration (FMCSA) requirements.This recommended practice does not evaluate or quantify other brake system characteristics such as wear, noise, judder, ABS performance, or braking under extreme temperatures or speeds. Minimum performance requirements are not part of this recommended practice. Consistency and margin of pass/fail of the minimum requirements related to stopping distance or equivalent deceleration levels of the FMVSS 105 vehicle test can be assessed as part of the project in coordination with the test requestor when using the appropriate vehicle information and vehicle dynamics modeling. Nevertheless, this procedure and its results do not replace the vehicle-level test to demonstrate compliance with FMVSS (105 for hydraulic brake systems or 121 for air-over-hydraulic brake systems) or other mandatory regulations (like ECE R13 or equivalents).Towing and trailering applications are not part of this document and require a separate assessment per SAE J2807.