Multi-mode electro-hydraulic brake boosting system and control method thereof

US11827194B2 · kind B2 · utility

Assignee

• Beijing Institute of Technology · CN

Inventors

• Weida Wang · Shanghai, CN
• Yanjie Wu · Beijing, CN
• Changle Xiang · Beijing, CN
• Liang Li · Shanghai, CN
• Jingang Liu · Tangxia, CN
• Zhongguo Zhang · Zaozhuang, CN
• Chao Yang · Beijing, CN

Key dates

• Filing date: May 6, 2021
• Grant date: Nov 28, 2023
• Expiry date: Jan 21, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/88
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a multi-mode electro-hydraulic brake boosting system and a control method thereof. When the boosting system fails, an emergency mechanical braking mode is achieved through structural redundancy, in a normal boosting mode, the system has a general braking mode and an emergency braking mode according to the strength requirements of a brake, and a general brake boosting mode and an emergency active pressurizing mode are controlled, respectively. Accurate boosting can be provided in the general braking process so that the pressure of a brake master cylinder can accurately follow target pressure, pressure buildup of the brake master cylinder can be completed more quickly in the emergency braking process, braking force is output to the maximum extent, the system response time of an emergency braking working condition is shortened, the braking capacity is improved, and traffic accidents are avoided.