The invention provides a proportional control valve of a hydrodynamic retarder. The proportional control valve comprises a main valve and a pilot valve, and the main valve decides opening and closingand the opening degree according to the pressure of working gas given by the pilot valve; the pilot valve comprises a machine base, a valve cover on the machine base and a connector on the valve cover. The connector is used for being in information connection with a vehicle-mounted ECU system and being electrically connected with a vehicle-mounted power supply system. An air inlet, a working port,an air inlet and outlet filter, an air inlet and exhaust electromagnetic valve, a pressure sensor and a one-way exhaust device are arranged on the machine base. An air inlet filter and an air outletfilter are respectively arranged in an air inlet and a working port of the pilot valve; the one-way exhaust device is arranged at an exhaust port of the electromagnetic valve; the opening and closingof the pilot valve are controlled by double electromagnetic valves which are quick-response diamagnetic electromagnetic valves. Therefore, the hydraulic retarder proportional control valve has good dustproof, high-temperature-resistant, high-magnetism-resistant and quick-response capabilities, and the hydraulic retarder proportional control valve which is timely in response, accurate in control, simple in structure, easy to manufacture and low in price is provided for a hydrodynamic retarder.
一种液力缓速器比例控制阀,包括主阀和先导阀,主阀根据先导阀给出的工作气体压力决定开合及开度;先导阀包括机座、机座上的阀罩、阀罩上的连接器,连接器用于与车载ECU系统的信息连接及与车载电源系统的电连接;机座上设有进气口、工作口、进气及出气过滤器、进气及排气电磁阀、压力传感器、单向排气装置。本发明在其先导阀的进气口和工作口内分别设置进气和出气过滤器,在电磁阀排气口设置单向排气装置,先导阀的启闭由双电磁阀控制且所用电磁阀为快速响应抗磁电磁阀,由此,使得本发明具有较好的防尘及抗高温、抗高磁和快速响应的能力,为液力缓速器提供了一种响应及时、控制精确、结构简单、制作容易、价格便宜的液力缓速器比例控制阀。
Proportional control valve of hydrodynamic retarder
液力缓速器比例控制阀
2020-04-21
Patent
Electronic Resource
Chinese