CAJ | 학술논문

液压助力转向系统中低温下油管内脉冲压力较常温下高。在低温环境下，对系统内的密封件，油管扣压工艺或者弹簧卡箍的密封性能要求较高，特别在面临客户较严苛操作时（如车辆发动立即猛打方向，车辆长期暴露在低温环境中等）。如何验证液压转向系统能否在低温下正常工作显得尤为重要。本文对乘用车液压助力转向系统低温下的失效模式进行了初步分析，并给出了其验证方法，对汽车其他子系统或零件低温下的失效验证也具有一定的参考意义。
액압조력전향계통중저온하유관내맥충압력교상온하고。재저온배경하，대계통내적밀봉건，유관구압공예혹자탄황잡고적밀봉성능요구교고，특별재면림객호교엄가조작시（여차량발동립즉맹타방향，차량장기폭로재저온배경중등）。여하험증액압전향계통능부재저온하정상공작현득우위중요。본문대승용차액압조력전향계통저온하적실효모식진행료초보분석，병급출료기험증방법，대기차기타자계통혹령건저온하적실효험증야구유일정적삼고의의。
Tubing pulse pressure at low temperatures in hydraulic steering system is higher than at room temperature. In the low-temperature environment, for sealed components in system, the requirement of withhold process or spring clamp tubing sealing performance is higher, Particularly in the face of more stringent customer operations (Such as immediate speed steering after launch, vehicle moderate long-term exposure at low temperature). To verify whether the hydraulic steering system is functional at low temperatures is particularly important. This paper proposes a preliminary analysis on the passenger hydraulic power steering system failure modes, and gives the verification method.