ELECTRIC BRAKE SYSTEM AND OPERATING METHOD THEREOF
First Claim
1. An electronic brake system comprising:
- a hydraulic pressure supply apparatus generating a hydraulic pressure by operating a hydraulic piston by an electrical signal output corresponding to a displacement of a brake pedal and including a first pressure chamber formed at one side of the hydraulic piston movably accommodated in a cylinder block and a second pressure chamber formed at the other side of the hydraulic piston; and
a hydraulic control unit including a first hydraulic circuit for controlling the hydraulic pressure transmitted to two wheel cylinders and a second hydraulic circuit for controlling the hydraulic pressure transmitted to two other wheel cylinders,wherein the hydraulic control unit includes a first hydraulic passage communicating with the first pressure chamber, second and third hydraulic passages branched from the first hydraulic passage and connected to the first and second hydraulic circuits respectively, a fourth hydraulic passage communicating with the second pressure chamber, fifth and sixth hydraulic passages branched from and rejoining the fourth hydraulic passage, a seventh hydraulic passage connecting the second hydraulic passage and the third hydraulic passage, an eighth hydraulic passage connecting the second hydraulic passage and the seventh hydraulic passage, and a ninth hydraulic passage connecting a point where the fifth and sixth hydraulic passages rejoin and the seventh or eighth hydraulic passage.
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Accused Products
Abstract
Disclosed are an electronic brake system and an operating method thereof: including a master cylinder for discharging a pressurized medium in accordance with a displacement of a brake pedal, a simulation apparatus for providing a pedal feeling to a driver, a hydraulic pressure supply apparatus for generating a hydraulic pressure by operating a hydraulic piston by an electrical signal outputted corresponding to the displacement of the brake pedal, and a hydraulic pressure control unit for controlling the hydraulic pressure of the pressurized medium supplied to each of wheel cylinders, and performing a normal operation mode, an abnormal operation mode and an inspection mode.
20 Citations
18 Claims
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1. An electronic brake system comprising:
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a hydraulic pressure supply apparatus generating a hydraulic pressure by operating a hydraulic piston by an electrical signal output corresponding to a displacement of a brake pedal and including a first pressure chamber formed at one side of the hydraulic piston movably accommodated in a cylinder block and a second pressure chamber formed at the other side of the hydraulic piston; and a hydraulic control unit including a first hydraulic circuit for controlling the hydraulic pressure transmitted to two wheel cylinders and a second hydraulic circuit for controlling the hydraulic pressure transmitted to two other wheel cylinders, wherein the hydraulic control unit includes a first hydraulic passage communicating with the first pressure chamber, second and third hydraulic passages branched from the first hydraulic passage and connected to the first and second hydraulic circuits respectively, a fourth hydraulic passage communicating with the second pressure chamber, fifth and sixth hydraulic passages branched from and rejoining the fourth hydraulic passage, a seventh hydraulic passage connecting the second hydraulic passage and the third hydraulic passage, an eighth hydraulic passage connecting the second hydraulic passage and the seventh hydraulic passage, and a ninth hydraulic passage connecting a point where the fifth and sixth hydraulic passages rejoin and the seventh or eighth hydraulic passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 11, 12, 13, 14, 15, 16, 17)
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9. An electronic brake system comprising:
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a master cylinder having first and second master chambers and first and second pistons provided respectively in the first and second master chambers, and discharging a pressurized medium by the pressing force of a brake pedal; a hydraulic pressure supply apparatus generating a hydraulic pressure by operating a hydraulic piston by an electrical signal output corresponding to a displacement of the brake pedal and including a first pressure chamber formed at one side of the hydraulic piston movably accommodated in a cylinder block and a second pressure chamber formed at the other side of the hydraulic piston; and a hydraulic control unit including a first hydraulic circuit for controlling the hydraulic pressure transmitted to two wheel cylinders and a second hydraulic circuit for controlling the hydraulic pressure transmitted to two other wheel cylinders, wherein the hydraulic control unit further includes an auxiliary hydraulic passage connecting the second pressure chamber and the second master chamber, and an auxiliary valve provided on the auxiliary hydraulic passage to control the flow of the pressurized medium. - View Dependent Claims (10, 18)
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Specification