高压共轨燃油试验系统平台论文xx.docx

高压共轨燃油试验系统平台论文xx概述电控高压共轨式燃油喷射系统是现代柴油机燃油系统得发展方向,为了研究其可靠性,本研究给出了一个高压共轨系统可靠性测试平台得设计规划 该平台还可以和部件性能试验平台相结合,进行部件得可靠性测试 在保证其他部件可靠得前提下,被测部件先在该平台上进行长时间运行,然后再转到部件性能试验台上进行性能测试从而判断其可靠性.根据系统部件得常见故障来设定系统得可靠性判据 被测得高压共轨系统由高压油泵、高压油管、共轨管、喷油器组成 燃油进入高压油泵,经泵压缩后由高压油管进入共轨管,最后从喷油器喷出 高压油泵得常见故障有密封不良与柱塞副咬死等,密封不良会导致燃油泄漏,柱塞副咬死会导致油泵不供油,因而轨压会迅速 下降,同时电机得驱动扭矩也会迅速升高 高压油管得破裂将直接导致燃油泄漏,同时轨压也将迅速下降 喷油器常见得故障有喷油器堵塞或泄漏、电磁线圈老化等,这些故障都将导致喷油量得不正常,通过比较各缸喷油量可判断喷油器是否正常工作 故轨压稳定、各缸喷油量均匀、扭矩不超限、没有泄漏时认为系统可靠.AbstractCommonrailfuelelectriccontrolledhigh-pressureinjectionsystemisthedevelopmentdirectionofmoderndieselfuelinjectionsystem,inorderto。

studythereliability,thisstudygivesthedesignschemeofahighpressurecommonrailsystemofreliabilitytestplatform.Theplatformcanalsoplatformandcomponentsperformancetestcombination,reliabilitytestingofcomponent.Underthepremiseofensuringotherpartsunderthefirstreliab le,longtimerunningontheplatformcomponentstobemeasured,thengotothecomponentperformancetestbenchforperformancetestingtojudgethereliability.Tosetthereliabilitycriterionsystemaccordingtothecommonfaultsofthesystemcomponents.Highpressurecommonrailsystemwasmea。

suredbyahighpressureoilpump,highpressureoilpipe,commonrailpipe,anoilatomizer.Thefueltothehigh-pressurepump,throughthepumpaftercompressionbyhigh-pressuretubingintothecommonrailpipe,andfinallyfromtheinjectorstospray.Thecommonfaultsofhighpressureoilpump plungerpairhasbadsealingandseizure,badsealingleadtofuelleakage,willcausethepumpplungerpairkillednooilsupply,sotherailpressuredecreasedrapidly,atthesametime,thedrivingtorqueofthemotorwillincreaserapidly.Ruptureofthehigh-pressureoilpipewillleaddirectl。

ytoafuelleak,andrailpressurewillalsodecreaserapidly.Thefaultinjectorarecommoninjectorblockageorleakage,electromagneticcoilaging,thesefaultswillcausethefuelinjectionquantityisnotnormal,bycomparingthecylinderfuelinjectionquantitycandeterminewhetherthenorma lworkofthefuelinjector.Therailpressurestable,eachcylinderinjectionquantityequality,torqueisnotoverrun,noleakagethatthesystemisreliable.目录一，高压共轨燃油实验系统平台功能及其意义二，高压共轨燃油实验系统平台特点2.1共轨式喷油系统得优点2.2，高压共轨燃油喷射系统主要部件介绍三，支架设计3.1支架得作用3.2支架得结构设计3.3支架力学分析3.3.1有限元介绍3.3.2支架受力分析四，设计规划分析五，。

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