There are provided a brake device that enhances the detection accuracy of a system with fluid leakage, regardless of the degree of fluid leakage, and a fluid leakage detection method of the brake device. The brake device includes a hydraulic unit and a control unit. The control unit includes a hydraulic pressure controller configured to control operations of a primary system connection valve, a secondary system connection valve, and a hydraulic pressure source; a first fluid leakage detector configured to detect a fluid leakage of a brake fluid occurring in each system, based on a primary system hydraulic pressure and a secondary system hydraulic pressure, in a state that the hydraulic pressure source is driven by the hydraulic pressure controller and that the primary system connection valve and the secondary system connection valve are alternately opened and closed; and a second fluid leakage detector configured to detect a fluid leakage of the brake fluid occurring in each system, based on the primary system hydraulic pressure and the secondary system hydraulic pressure, in a state that the primary system connection valve and the secondary system connection valve are closed by the hydraulic pressure controller after execution of the fluid leakage detection by the first fluid leakage detector.
Brake Device and Method of Detecting Fluid Leakage in Brake Device
2019-06-20
Patent
Electronic Resource
English
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
BRAKE DEVICE AND METHOD FOR DETECTING FLUID LEAKAGE IN BRAKE DEVICE
European Patent Office | 2018
|BRAKE FLUID LEAKAGE DETECTION SYSTEM AND BRAKE FLUID LEAKAGE DETECTION METHOD
European Patent Office | 2024
|BRAKE DEVICE AND LIQUID LEAKAGE DETECTION METHOD OF BRAKE DEVICE
European Patent Office | 2018
|BRAKE CONTROL DEVICE, BRAKE SYSTEM, AND BRAKE FLUID PRESSURE GENERATION METHOD
European Patent Office | 2018
|