ELECTRONIC BRAKE SYSTEM
First Claim
1. An electronic brake system comprising:
- a hydraulic pressure supply apparatus including a motor operated by an electrical signal outputted corresponding to a displacement of a brake pedal;
a power converting unit for converting a rotational force of the motor into a linear movement, a cylinder block, a hydraulic piston connected to the power converting unit and movably accommodated in the cylinder block, a first pressure chamber provided at one side of the hydraulic piston and connected to one or more wheel cylinders, and a second pressure chamber provided at the other side of the hydraulic piston and connected to one or more wheel cylinders;
a first dump passage communicating with the first pressure chamber and connected to a reservoir in which oil stored;
a second dump passage communicating with the second pressure chamber and connected to the reservoir;
a first dump valve provided on the first dump passage to control the flow of oil and provided as a check valve for blocking the flow of oil in the opposite direction while allowing the flow of oil in the direction to the first pressure chamber from the reservoir;
a second dump valve provided on the second dump passage to control the flow of oil and provided as a check valve for blocking the flow of oil in the opposite direction while allowing the flow of oil in the direction to the second pressure chamber from the reservoir;
a third dump valve provided on a bypass passage connecting an upstream side and a downstream side of the second dump valve on the second dump passage to control the flow of oil and provided as a solenoid valve for controlling the flow of oil in both directions between the reservoir and the second pressure chamber; and
a fourth dump valve provided on a bypass passage connecting an upstream side and a downstream side of the first dump valve on the first dump passage to control the flow of oil and provided as a solenoid valve for controlling the flow of oil in both directions between the reservoir and the first pressure chamber.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is an electronic brake system. The electronic brake system comprises a hydraulic pressure supply apparatus generating a hydraulic pressure by using a piston operated by an electrical signal outputted corresponding to a displacement of a brake pedal and including a first pressure chamber provided at one side of the piston movably accommodated in a cylinder block to be connected to one or more wheel cylinders and a second pressure chamber provided at the other side of the piston to be connected to one or more wheel cylinders; a first hydraulic passage communicating with the first pressure chamber; a second hydraulic passage branched from the first hydraulic passage; a third hydraulic passage branched from the first hydraulic passage; a fourth hydraulic passage communicating with the second pressure chamber; a fifth hydraulic passage branched from the fourth hydraulic passage to join with the second hydraulic passage; a sixth hydraulic passage branched from the fourth hydraulic passage to join with the third hydraulic passage; a first control valve provided on the second hydraulic passage to control the flow of oil; a second control valve provided on the third hydraulic passage to control the flow of oil; a third control valve provided on the fifth hydraulic passage to control the flow of oil; a fourth control valve provided on the sixth hydraulic passage to control the flow of oil; a first hydraulic circuit branched from the second hydraulic passage or the fifth hydraulic passage to be connected to two wheel cylinders; and a second hydraulic circuit branched from the third hydraulic passage or the sixth hydraulic passage to be connected to two wheel cylinders.
10 Citations
15 Claims
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1. An electronic brake system comprising:
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a hydraulic pressure supply apparatus including a motor operated by an electrical signal outputted corresponding to a displacement of a brake pedal;
a power converting unit for converting a rotational force of the motor into a linear movement, a cylinder block, a hydraulic piston connected to the power converting unit and movably accommodated in the cylinder block, a first pressure chamber provided at one side of the hydraulic piston and connected to one or more wheel cylinders, and a second pressure chamber provided at the other side of the hydraulic piston and connected to one or more wheel cylinders;a first dump passage communicating with the first pressure chamber and connected to a reservoir in which oil stored; a second dump passage communicating with the second pressure chamber and connected to the reservoir; a first dump valve provided on the first dump passage to control the flow of oil and provided as a check valve for blocking the flow of oil in the opposite direction while allowing the flow of oil in the direction to the first pressure chamber from the reservoir; a second dump valve provided on the second dump passage to control the flow of oil and provided as a check valve for blocking the flow of oil in the opposite direction while allowing the flow of oil in the direction to the second pressure chamber from the reservoir; a third dump valve provided on a bypass passage connecting an upstream side and a downstream side of the second dump valve on the second dump passage to control the flow of oil and provided as a solenoid valve for controlling the flow of oil in both directions between the reservoir and the second pressure chamber; and a fourth dump valve provided on a bypass passage connecting an upstream side and a downstream side of the first dump valve on the first dump passage to control the flow of oil and provided as a solenoid valve for controlling the flow of oil in both directions between the reservoir and the first pressure chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification