SAE J2453 Manual Transmission and Transaxle Efficiency and Parasitic Loss Measurement
时间:2024-05-14 17:29:36 来源: 标准资料网 作者：标准资料网 阅读：9047
Product Code:SAE J2453
Title:Manual Transmission and Transaxle Efficiency and Parasitic Loss Measurement
Issuing Committee:Sae Ic Powertrain Steering Committee
Scope:Because of the intense focus on CAFE and fuel emission standards, optimization of the automobile drivetrain is imperative. In light of this, component efficiencies have become an important factor in the drivetrain decision-making process. It has therefore become necessary to develop a universal standard to judge transmission efficiency.This SAE Recommended Practice specifies the dynamometer test procedure which maps a manual transmission's efficiency. The document is separated into two parts. The first compares input and output torque throughout a specified input speed range in order to determine 'in-gear' transmission efficiency. The second procedure measures parasitic losses experienced while in neutral at nominal idling speeds and also churning losses while in gear.The application of this document is intended for passenger car and light truck.All references to transmissions throughout this document include transaxles.
【英文标准名称】:Flexibleinsulatingsleeving-Part3:Specificationsforindividualtypesofsleeving-Sheet281:Heat-shrinkable,polyolefinsleeving,semiconductive
【原文标准名称】:绝缘软套管.第3部分:各种型号软套管规范.活页281:热缩,聚烯烃半导体软套管
【标准号】:IEC60684-3-281-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC15
【标准类型】:()
【标准水平】:()
【中文主题词】:验收规范;交货条件;电气工程;电绝缘材料;柔性;柔性管;热收缩;软管;绝缘材料;绝缘管;塑料;聚烯烃;收缩比;收缩套管;规范;测试
【英文主题词】:Acceptancespecification;Deliveryconditions;Electricalengineering;Electricalinsulatingmaterials;Flexible;Flexiblepipes;Heatshrinking;Hoses;Insulatingmaterials;Insulatingtubings;Plastics;Polyolefins;Shrinkratio;Shrinkablesleeves;Specifications;Testing
【摘要】:ThispartofIEC60684givestherequirementsfortwotypesofheat-shrinkable,polyolefinsleeving,semiconductive,withanominalshrinkratioof3:1.Thissleevinghasbeenfoundsuitableuptotemperaturesof100°C.–TypeA:ThinwallInternaldiameterupto195,0mmtypically–TypeB:MediumwallInternaldiameterupto120,0mmtypicallyThesesleevingsarenormallysuppliedinthecolourblack.Sincethesetypesofsleevingscoverasignificantlylargerangeofsizesandwallthicknesses,TablesA.1andA.2inthisstandardprovidesguidancetotherangeofsizesavailable.Theactualsizeshallbeagreedbetweentheuserandthesupplier.Materialswhichconformtothisspecificationmeetestablishedlevelsofperformance.However,theselectionofamaterialbyauserforaspecificapplicationshouldbebasedontheactualrequirementsnecessaryforadequateperformanceinthatapplicationandnotbasedonthisspecificationalone.ThissleevingisdesignedtobeusedinMVcableaccessoriesandassuchelectricalperformancemustbeprovenaspartoftheassembly.ExamplesofthisaredescribedinHD629andIEC60502series.
【中国标准分类号】:K15
【国际标准分类号】:29_035_20
【页数】:24P;A4
【正文语种】:英语