SAE J2457 Air Quality for Air Braked Vehicles (Cancelled Dec 2008)

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Product Code:SAE J2457
Title:Air Quality for Air Braked Vehicles (Cancelled Dec 2008)
Issuing Committee:Truck And Bus Brake Supply And Control Components Committee
Scope:This SAE Recommended Practice establishes air quality standards for the pressurized air in the brake system of vehicles with air brakes.
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【英文标准名称】:Toolsformoulding-Centringsleeves
【原文标准名称】:制模工具.第2部分:定心套筒
【标准号】:BS7564-2-1992
【标准状态】:作废
【国别】:英国
【发布日期】:1992-03-31
【实施或试行日期】:1992-03-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:铸模设备;锁定装置及定位装置;尺寸;名称与符号;粗糙度(表面);套筒;粗糙度;机床;顶尖
【英文主题词】:Centeringsleeves;Components;Designations;Dimensions;Foundryengineering;Mouldingequipment;Shape;Tools
【摘要】:Specifiesdimensionsandtolerancesforcentringsleevesintendedtobeusedforlocatingblocksinrelationtothefixedclampplatesinmoulds.
【中国标准分类号】:J46
【国际标准分类号】:21_060_60;25_120_30
【页数】:8P;A4
【正文语种】:英语


【英文标准名称】:Measurementofnoiseemittedbyacceleratingroadvehicles-Engineeringmethod-MandNcategories
【原文标准名称】:道路车辆加速排放的噪音测量.工程测量法.M和N分类
【标准号】:BSISO362-1-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2008-03-31
【实施或试行日期】:2008-03-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:加速度;声学测量;声学试验;声学;定义;机械噪声;数学计算;测量;测量不确定度;测量技术;汽车;移动噪声;噪声;噪声(环境的);噪声测量;精密度;道路车辆;声压;符号;测试;城镇;交通
【英文主题词】:Acceleration;Acousticmeasurement;Acoustictesting;Acoustics;Definitions;Machinenoise;Mathematicalcalculations;Measurement;Measuringincertainity;Measuringtechniques;Motorvehicles;Movementnoise;Noise;Noise(environmental);Noisemeasurements;Precision;Roadvehicles;Soundpressure;Symbols;Testing;Towns;Traffic
【摘要】:ThispartofISO362specifiesanengineeringmethodformeasuringthenoiseemittedbyroadvehiclesofcategoriesMandNundertypicalurbantrafficconditions.ItexcludesvehiclesofcategoryL1andL2,whicharecoveredbyISO9645,andvehiclesofcategoryL3,L4andL5coveredbyISO362-2.Thespecificationsareintendedtoreproducethelevelofnoisegeneratedbytheprincipalnoisesourcesduringnormaldrivinginurbantraffic(seeAnnexA).Themethodisdesignedtomeettherequirementsofsimplicityasfarastheyareconsistentwithreproducibilityofresultsundertheoperatingconditionsofthevehicle.Thetestmethodrequiresanacousticalenvironmentthatisonlyobtainedinanextensiveopenspace.Suchconditionsareusuallyprovidedfor?typeapprovalmeasurementsofavehicle,?measurementsatthemanufacturingstage,and?measurementsatofficialtestingstations.NOTE1Theresultsobtainedbythismethodgiveanobjectivemeasureofthenoiseemittedunderthespecifiedconditionsoftest.Itisnecessarytoconsiderthefactthatthesubjectiveappraisalofthenoiseannoyanceofdifferentclassesofmotorvehiclesisnotsimplyrelatedtotheindicationsofasoundmeasurementsystem.Asannoyanceisstronglyrelatedtopersonalhumanperception,physiologicalhumanconditions,cultureandenvironmentalconditions,thereisalargevariationanditisthereforenotusefulasaparametertodescribeaspecificvehiclecondition.NOTE2Spotchecksofvehicleschosenatrandomarerarelymadeinanidealacousticalenvironment.IfmeasurementsarecarriedoutontheroadinanacousticalenvironmentwhichdoesnotfulfiltherequirementsstatedinthisInternationalStandard,theresultsobtainedcandeviateappreciablyfromtheresultsobtainedusingthespecifiedconditions.
【中国标准分类号】:T04
【国际标准分类号】:17_140_30;43_020
【页数】:64P.;A4
【正文语种】:英语