Hydraulic braking system having an auxiliary pressure source
First Claim
1. A hydraulic braking system having a hydraulic braking pressure circuit for braking each wheel of an automotive vehicle with brake fluid fed to a wheel cylinder operatively mounted on said wheel, comprising:
- an auxiliary pressure source having an inlet for introducing the brake fluid and an outlet connected to said hydraulic braking pressure circuit for discharging thereinto the pressurized brake fluid;
a circulation passage disposed between the outlet of said auxiliary pressure source and the inlet thereof for communicating each other;
auxiliary valve means disposed in said circulation passage for opening or closing said circulation passage;
an auxiliary reservoir connected to said circulation passage between said auxiliary valve means and the inlet of said auxiliary pressure source, said auxiliary reservoir having a capacity for storing a predetermined amount of brake fluid, andcontrol means for driving said auxiliary pressure source and actuating said auxiliary valve means to open or close said circulation passage, the brake fluid discharged from said auxiliary pressure source being fed into said hydraulic braking pressure circuit when said auxiliary valve means closes said circulation passage, and the brake fluid discharged from said auxiliary pressure source being circulated in said circulation passage via said auxiliary valve means when said auxiliary valve means opens said circulation passage.
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Accused Products
Abstract
The present invention is directed to a hydraulic braking system having a hydraulic braking pressure circuit for braking each wheel of an automotive vehicle with brake fluid fed to a wheel cylinder operatively mounted on the wheel. The system includes an auxiliary pressure source which has an inlet for introducing the brake fluid and an outlet connected to the pressure circuit for discharging thereinto the pressurized brake fluid. A circulation passage is disposed between the outlet and the inlet for communicating with each other. An auxiliary valve is disposed in the circulation passage so as to open or close the passage. An auxiliary reservoir is connected to the circulation passage between the valve and the inlet of the source. The auxiliary reservoir has a capacity for storing a predetermined amount of brake fluid. And, a controller is provided for driving the source and actuating the valve so as to open or close the circulation passage. Accordingly, the brake fluid discharged from the pressure source is fed into the pressure circuit when the valve closes the passage, while the brake fluid discharged from the pressure source is circulated in the circulation passage via the valve when the valve opens the passage.
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Citations
30 Claims
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1. A hydraulic braking system having a hydraulic braking pressure circuit for braking each wheel of an automotive vehicle with brake fluid fed to a wheel cylinder operatively mounted on said wheel, comprising:
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an auxiliary pressure source having an inlet for introducing the brake fluid and an outlet connected to said hydraulic braking pressure circuit for discharging thereinto the pressurized brake fluid; a circulation passage disposed between the outlet of said auxiliary pressure source and the inlet thereof for communicating each other; auxiliary valve means disposed in said circulation passage for opening or closing said circulation passage; an auxiliary reservoir connected to said circulation passage between said auxiliary valve means and the inlet of said auxiliary pressure source, said auxiliary reservoir having a capacity for storing a predetermined amount of brake fluid, and control means for driving said auxiliary pressure source and actuating said auxiliary valve means to open or close said circulation passage, the brake fluid discharged from said auxiliary pressure source being fed into said hydraulic braking pressure circuit when said auxiliary valve means closes said circulation passage, and the brake fluid discharged from said auxiliary pressure source being circulated in said circulation passage via said auxiliary valve means when said auxiliary valve means opens said circulation passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification