The invention discloses an auxiliary energy accumulator type electric hydraulic power steering system. Comprising a steering wheel, a steering shaft, an integral circulating ball type power steering gear, an oil storage tank, a hydraulic pump, a pressure limiting valve, a one-way valve, an energy accumulator, a steering wheel torque and angle sensor, an energy accumulator pressure sensor, an EHPS system controller, a motor controller, a power-assisted motor, an electromagnetic pressure reducing valve, a first electromagnetic switch valve and a second electromagnetic switch valve. According to the system, the energy accumulator and the hydraulic pump convey hydraulic oil to the integral circulating ball type power steering gear together in the initial rising stage of the rotating speed of the power-assisted motor under the steering working condition, the power-assisted response speed is increased, power assistance is easily and accurately controlled, and the internal pressure of the energy accumulator is far smaller than that of a normal-pressure type hydraulic power-assisted steering system; the energy accumulator is high in utilization rate of stored pressure oil, and energy is saved.
本发明公开了一种辅助蓄能器式电动液压助力转向系统,包括:转向盘、转向轴、整体循环球式动力转向器、储油罐、液压泵、限压阀、单向阀、蓄能器、转向盘转矩转角传感器、蓄能器压力传感器、EHPS系统控制器、电机控制器、助力电机、电磁减压阀、第一电磁开关阀及第二电磁开关阀。该系统在且仅在转向工况下助力电机转速的上升初期,蓄能器与液压泵一起向整体循环球式动力转向器输送液压油,提高了助力响应速度,助力容易精确控制,蓄能器内部压力远小于常压式液压助力转向系统,蓄能器储存压力油液利用率高,节约能源。
Auxiliary energy accumulator type electric hydraulic power steering system
一种辅助蓄能器式电动液压助力转向系统
2022-06-21
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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