Design and research on the electronic parking brake system of the medium and heavy duty vehicles

• Main Authors: Hongliang WANG, Wei DONG, Nan LI, Xiaoming DAI
• Format: Article
• Language: zho
• Published: Hebei University of Science and Technology 2015-04-01
• Series: Journal of Hebei University of Science and Technology
• Subjects: electronic circuits; midium/heavy duty vehicle; parking brake; electronic control system; control strategy
• Online Access: http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201502002&flag=1&journal_

Focusing on auto control of parking brake system of the medium and heavy duty vehicles, the key problems are studied including the system design and control strategies. The structure and working principle of the parking brake system of the medium and heavy duty vehicles are analyzed. The functions of EPB are proposed. The important information of the vehicle are analyzed which could influence the EPB system. The overall plan of the pneumatic EPB system is designed, which adopts the two-position three-way electromagnetic valve with double coil as actuator. The system could keep the vehicle parking brake status or parking release status for a long time without power supply. The function modules of the system are planned, and the control strategies of automatic parking brake and parking release are made. The experiment is performed on a medium-sized commercial vehicle which is experimentally modified. The overall plan of the pneumatic EPB system and the automatic parking function are proved through real vehicle tests.