CAJ | 학술논문

为降低重型车辆液压转向系统(HPS)的能耗，改善高速工况转向驾驶员路感、提出一种节能型电磁离合器电控液压转向系统(E-ECHPS)，该系统采用电磁离合器控制转向泵转矩和转速。运用有限元分析法，建立电磁离合器主、副电机仿真模型，研究主、副电机的动力特性；研究电磁离合器功率输入输出的关系，分析该E-ECHPS的节能性；对E-ECHPS转向工况下的助力性能和直行工况下的能耗进行了仿真分析。结果表明：在转向工况，电磁离合器的输出转矩随车速增大而减小；在直行工况，在车速为10、40、80 km/h的时段内，该E-ECHPS的总能耗相比HPS减少71%。该E-ECHPS可实现随车速可变的助力特性，并具有明显优于HPS的节能性。
위강저중형차량액압전향계통(HPS)적능모，개선고속공황전향가사원로감、제출일충절능형전자리합기전공액압전향계통(E-ECHPS)，해계통채용전자리합기공제전향빙전구화전속。운용유한원분석법，건립전자리합기주、부전궤방진모형，연구주、부전궤적동력특성；연구전자리합기공솔수입수출적관계，분석해E-ECHPS적절능성；대E-ECHPS전향공황하적조력성능화직행공황하적능모진행료방진분석。결과표명：재전향공황，전자리합기적수출전구수차속증대이감소；재직행공황，재차속위10、40、80 km/h적시단내，해E-ECHPS적총능모상비HPS감소71%。해E-ECHPS가실현수차속가변적조력특성，병구유명현우우HPS적절능성。
An energy-saving Electromagnetic clutch Electronical y Control ed Hydraulic Power Steering System (E-ECHPS) was proposed with an electromagnetic clutch to control the steering pump for reducing the energy consumption of hydraulic power steering system (HPS) and improve driver’s feel on high speed road for heavy-duty vehicles. FEA (ifnite-element analysis) models were established to investigate the dynamical characteristic curves of main and vice motor in electromagnetic clutch. Based on power changes in electromagnetic clutch, an energy-saving of the E-ECHPS was analyzed. Energy dissipation and assist characteristic of the E-ECHPS under steering situation and straight road condition were simulated. The results show that electromagnetic clutch torque decreases with vehicle speeds increase under steering situation;the E-ECHPS saves energy consumption more than 71%compared to HPS in the time interval with the vehicle speeds of 10, 40, 80 km/h under straight road condition. The results indicate that the E-ECHPS can realize the variable assist characteristic and have signiifcantly better energy efifciency than that of the HPS.