【英文标准名称】:GrayIronCastingsforPressure-ContainingPartsforTemperaturesupto345DegreesC(Metric)
【原文标准名称】:温度达345℃受压部件用灰铁铸件规格(米制)
【标准号】:ASTMA278M-1993
【标准状态】:作废
【国别】:美国
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:铸件;生铁锭;压力容器;铁;灰口铁;米制的;温度
【英文主题词】:castings;pigs(castings);temperature;iron;greycast-iron;pressurevessels;metric
【摘要】:
【中国标准分类号】:J31
【国际标准分类号】:77_080_10
【页数】:
【正文语种】:英语


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.