某重型汽车转向和散热液压系统的散热计算

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中图分类号：U462 收稿日期：2025-06-11 DOI： 10.19999/j.cnki.1004-0226.2025.09.011

Heat Dissipation Calculation for the Hydraulic System of Steering and Cooling in a Certain Heavy-duty Vehicle

Liu KangningWang Liyan Pu Tingkai Shaanxi Heavy Duty Automobile Co.，Ltd.，Xi'an 710200，China

Abstract：Foraddresing theoverheatingissueinsteeringandcoolinghydraulic systems ofaheavy-dutyvehicleunderextremeoperating conditions （ 2000r/min engine speed， 65‰ ambient temperature），this paper proposes a simple yet efficient thermal improvementsolutiontoughthoreticalcaulatioandexperietalaalysis，hchasenma-appledinthidgeeratioiclesri. Results show thatafter installingtheoil cooler，the maximum hydraulicoil temperature dropssignificantly from 113.2°C to $9 1 ～ ＼mathrm { ＼textmp } ～ ＼mathrm { ＼textmp } ～ ＼$ ，outperformingconventionalcoolingdesignsremarkablyTiloredtometthepracticalrequirementsoftheeavy-dutyvehicle，thissolutioneffectivelyresolvesthetechnicalchallngeofoiloverheating，providingvaluableeferencefortheraldesignofsiilarvehicle models.

Keywords：Heavy-dutyvehicle;Hydraulicsystem;Oil temperaturecontrol;Oilcooler;Heat dissipationoptimization

1前言

重型汽车液压转向系统的油温控制直接影响转向性能与系统可靠性。（剩余4287字）