内燃机车机油系统的完善

介绍了内燃机车机油系统的新式机油泵及其结构,阐述了该方案在改善机车车辆运行特性、提高机车效率和工作可靠性等方面的技术优势.     

集装箱船船首外飘砰击及其对运营可靠性的影响

关于船首区域“砰击”的见解，似乎普遍认为是船长使船在波浪中减速的正当理由，而很少认为船长如何正确判断某一给定情况下的严重性。对船壳板和船首楼的结构损伤，与集装箱、集装箱中装载货物有关绑扎问题对安全的威胁，以及船员对船舶瞬变特征感到不舒适等，对于一艘集装箱船而言都是相关连的问题。     

公路客车全承载底架模块化设计

分析了底架特性及底架接口，阐述了底架模块划分、设计要点及模化设计结果。     

幕府将军 MITSUBISHI Pajero

上一代的帕杰罗,脸宽宽的,眼睛亮亮的,线条流畅,肌肉鼓鼓的,好像阿根廷巴塔可尼亚的猫,这种猫就叫Pajero。新一代的帕杰罗,脸方方的,大大的凤眼,嘴上漆黑的四方形胡须,高大强健,好像一个日本的武士。让人想起它在本国的另外一个名字Shougun——幕府将军。     

航运业正经历技术繁荣抑或短暂发展?

大约20年前,互联网热潮推动大量旨在降低集装箱运输业成本,改善行业效率的技术项目,虽然这些项目大部分未获得成功,但大家都认为技术发展不仅能给行业带来增益,还能推动行业发展. 日新月异的人口结构、受物理和经济波动性影响的行业,更便宜、便捷的技术的出现,例如物流服务提供商和承运人正努力摒弃旧流程,实现数字化,从而带来巨大变化.     

半无限惯性表面产生的波浪散射问题研究的另一种方法(英文)

A new method to solve the boundary value problem arising in the study of scattering of two-dimensional surface water waves by a discontinuity in the surface boundary conditions is presented in this paper. The discontinuity arises due to the floating of two semi-infinite inertial surfaces of different surface densities. Applying Green’s second identity to the potential functions and appropriate Green’s functions, this problem is reduced to solving two coupled Fredholm integral equations with regular kernels. The solutions to these integral equations are used to determine the reflection and the transmission coefficients. The results for the reflection coefficient are presented graphically and are compared to those obtained earlier using other research methods. It is observed from the graphs that the results computed from the present analysis match exactly with the previous results.     

250MPa喷油压力对轻型柴油机喷油器几何结构的影响

研究了在250MPa喷油压力下轻型柴油机喷油器喷嘴几何结构对燃油耗和废气排放特性的影响。     

Inverse Heat Conduction and Data-Type Issues for Advanced Diagnostic Analysis

IlitroductlonNormallytemperaturemeasurementsareusedinaninverseheatconductionanalysis.lnarecelltinverseheatconductioninvestigation[ll,twodatatypes(temperatureandheating/coolingrate)weecomparedforthepurposeofinvestigatingtheireffectonpredictingthesurfaceheatfltixattheprojectedsurface.Itwasillustrated,vianumericalexample,thatthechoiceofinputdatainnuencesbOththeaccurasyandstabilityattheprojectedsurface.Thatis,thepredictionnotonlydePendsonthetemperaturedatabutimplicitlyitsillterpretedheating/cooli…     

Stress Field Analysis of Carburized Specimen and Its Numerical Simulation

IntroductionCarburiZingiswidelyaPPiedheattre8boellttechnologyinindustry.Duringcarburizing,acasewithcarboncontellthigherthanthatofthecoreisformd;andaftethecarburzedmachinepwtbeingquenched,sdsehardenedlayeconsistedmainlyofmartensite,aswellasresidualstfOssfieldappearinit.Theresidua1stressfieldofcarburizedsteelanditsinfluenceonfatiguestrengthhavebeenstudiedexPerimenally["'],whilefewrePortscanbefoundaboatnumericalsimulationofresidualstressfieldincarburizedsPecmenaswellasitsinstataneousstressdist…     

Modelling of high speed gas quenching

1ntroductionGaswimpfobe,usuallynitrOgen,mandheiumatposuresOfuPtO60barhasbousedinvacmbosfOrSendywtanditScharWshcsforbds-ofCOInNarewe1knOWUIl].More~theuseofgasq-aPPliedtOs~orsinglelayereOfCOmwtthawereheandindsvacuumorCOnwtalatmOSPherbohasboPrOpond(2l.TOathaatetheedtOCOOtheboacestruCtUrasweIIastheCOIntwIkeSechquesOboinvolvethetrareferOftheNttobeqMtoa~allydeaignedcoklchfortsl.6as~of~peinndsngmaybosoaS~the-ofbo'bds-Oha'pesstwfOr'juSb~'manwt.Unlikliquldbased~antS,gaswiiscleannO…