Brake control system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakayuki Yamamoto, Masaaki Komazawa, Tetsuya Miyazaki
Life of this patent
Estimating the term…
Abstract
In a brake control system (10), a reservoir switch (60) detects a decrease in the amount of hydraulic fluid in a reservoir tank (26). An ECU (100) switches a master cutoff valve (22), a pressure increase valve (40), and a pressure decrease valve (42) and the like between open and closed. When a decrease in the amount of hydraulic fluid in the reservoir tank (26) is detected, the ECU (100) opens the master cutoff valve (22) to supply hydraulic fluid from a right front-wheel wheel cylinder (20FR) and a left front-wheel wheel cylinder (20FL) to a master cylinder (14), when release of a brake pedal (12) is detected.
Claims13
A brake control system comprising:
- a hydraulic fluid decrease detecting portion that detects a decrease in the amount of hydraulic fluid in a reservoir tank;
- and
- a valve opening and closing controlling portion that switches at least one valve arranged in a hydraulic fluid path between being open and closed, the at least one valve including a first valve that is interposed in a hydraulic fluid path that connects a master cylinder with a hydraulic fluid storing portion in which the hydraulic pressure of stored hydraulic fluid is higher than the hydraulic pressure of the master cylinder,
- wherein when a decrease in the amount of hydraulic fluid in the reservoir tank is detected, the valve opening and closing controlling portion opens the first valve to supply hydraulic fluid to the master cylinder from the hydraulic fluid storing portion.
6-7. (canceled)
A brake control system comprising:
- means for detecting a decrease in hydraulic fluid in a reservoir tank;
- and
- means for switching at least one valve interposed in a hydraulic fluid path between being open and closed, the at least one valve including a first valve that is interposed in the hydraulic fluid path that connects a master cylinder with a hydraulic fluid storing portion in which the hydraulic pressure of stored hydraulic fluid is higher than the hydraulic pressure of the master cylinder,
- wherein when a decrease in the amount of hydraulic fluid in the reservoir tank is detected, the means for switching opens the first valve to supply hydraulic fluid from the hydraulic fluid storing portion to the master cylinder.
A brake control method comprising:
- detecting a decrease in the amount of hydraulic fluid in the reservoir tank;
- and
- switching at least one valve arranged in a hydraulic fluid path between open and closed, the at least one valve including a first valve that is interposed in a hydraulic fluid path that connects a master cylinder with a hydraulic fluid storing portion in which the hydraulic pressure of stored hydraulic fluid is higher than the hydraulic pressure of the master cylinder,
- wherein when a decrease in the amount of hydraulic fluid in a reservoir tank is detected, the first valve is opened to supply hydraulic fluid from the hydraulic fluid storing portion to the master cylinder.
14-15. (canceled)
Dependencies are inferred from the claim text.