ISO 3673-2-2012 塑料.环氧树脂.第2部分:试样制备和性能测定

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下一篇: ISO 16014-2-2012 塑料.用粒度排除色谱法测定平均分子质量和分子质量分布.第2部分:通用校准法

标准名称：	地质仪器机械和电气装配通用技术要求
中标分类：	矿业 >> 地质勘探设备 >> 地质勘探设备综合
发布日期：
实施日期：	1991-10-01
首发日期：
作废日期：
出版日期：
页数：	20页

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Product Code:SAE J992
Title:Brake System Performance Requirements--Truck, Bus, and Combination of Vehicles (Cancelled Dec 1998)
Issuing Committee:Truck And Bus Brake Systems Committee
Scope:This SAE Recommended Practice presents performance requirements for the brake systems of motor vehicles intended for roadway use and falling into the following classifications: Light trucks and buses: 6001-10 000 lb (2700-4500 kg) gvw; Truck and bus: Over 10 000 lb (4500 kg) gvw; combination of vehicles towing vehicles over 10 000 lb (4500 kg) gvw. Acceptable performance requirements are based on data obtained from applicable sections of SAE J786a (March, 1978). The purpose of this recommended practice is to establish the minimum brake system performance requirements with regard to: 3.1 Stopping ability--of cold brakes, as affected by vehicle speed. 3.2 Stopping ability--of hot brakes, as affected by vehicle speed and duty cycle. 3.3 Pedal force (air pressure) requirements--maximum allowable. 3.4 Brake stability. 3.5 stopping ability and recovery of wet brakes. 3.6 Stopping ability of emergency brake system. 3.7 Brake effectiveness distribution for vehicles in combination.