Abstract
This research developed a novel proportional pressure control valve for an automobile hydraulic braking actuator. It also analyzed and simulated solenoid force of the control valves, and the pressure relief capability test of electromagnetic thrust with the proportional valve body. Considering the high controllability and ease of production, the driver of this proportional valve was designed with a small volume and powerful solenoid force to control braking pressure and flow. Since the proportional valve can have closed-loop control, the proportional valve can replace a conventional solenoid valve in current brake actuators. With the proportional valve controlling braking and pressure relief mode, it can narrow the space of hydraulic braking actuator, and precisely control braking force to achieve safety objectives. Finally, the proposed novel proportional pressure control valve of an automobile hydraulic braking actuator was implemented and verified experimentally.
Highlights
To provide safer and more comfortable driving conditions for motorists, the anti-lock braking system (ABS) is currently basic equipment for automobiles
As ABS starts to work, the hydraulic pressure within the tire calipers is controlled by four groups of solenoid valves
The braking capability of automobiles relies on characteristics of the tires, which are the only contact with the ground
Summary
To provide safer and more comfortable driving conditions for motorists, the anti-lock braking system (ABS) is currently basic equipment for automobiles. This system achieves improved control capability by connecting the electro-hydraulic brake (EHB) between master cylinder and wheel cylinder. As ABS starts to work, the hydraulic pressure (braking force) within the tire calipers is controlled by four groups of solenoid valves (inlet/outlet valve). The braking capability of automobiles relies on characteristics of the tires, which are the only contact with the ground. The main factor determining this capability is the slip ratio of the tires and ground, defined as slip
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