Brake-by-wire system with piston pry-back prevention
US10471945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Nov 15, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/82
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A Brake-By-Wire (BBW) system for a vehicle includes a brake rotor, a caliper, a master cylinder, and a controller. The caliper is adapted to exert a hydraulic force upon the brake rotor during a braking action. The master cylinder includes a housing, a piston, an actuator, and a hydraulic fluid reservoir. The housing defines a piston cavity. The actuator is adapted to controllably move the piston within the piston cavity. A compensation opening is defined by the housing, and is in fluid communication between the reservoir and the piston cavity. A fluid opening is defined by the housing, and is in fluid communication between the caliper and the piston cavity. The controller is configured to receive a vehicle condition signal and send a command signal to the actuator that effects closure of the compensation opening based on the vehicle condition signal to prevent hydraulic fluid flowback to the hydraulic fluid reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.