US 11,951,955 B2
Electrohydraulic brake apparatus
Jong Sung Kim, Seoul (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Apr. 21, 2021, as Appl. No. 17/236,225.
Claims priority of application No. 10-2020-0050087 (KR), filed on Apr. 24, 2020.
Prior Publication US 2021/0331658 A1, Oct. 28, 2021
Int. Cl. B60T 13/68 (2006.01); B60T 8/171 (2006.01); B60T 8/1755 (2006.01); B60T 13/14 (2006.01)
CPC B60T 13/686 (2013.01) [B60T 8/171 (2013.01); B60T 8/1755 (2013.01); B60T 13/145 (2013.01); B60T 13/148 (2013.01); B60T 2220/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An electrohydraulic brake apparatus comprising:
a reservoir configured to store a brake fluid;
a stroke sensor configured to sense a pedaling amount of a brake pedal;
a plurality of wheel brake assemblies configured to provide braking forces to wheels;
a main master cylinder configured to discharge the brake fluid introduced from the reservoir to a first main line;
an electric booster configured to boost a pedal force of a driver;
an electronic stability control (ESC) system configured to receive the brake fluid discharged from the main master cylinder through the first main line and open or close a plurality of inlet valves disposed therein to change a pressure of the brake fluid discharged from the main master cylinder; and
an electronic control unit (ECU) configured to control the ESC system so that a fluid pressure supplied to the ESC system brakes only part of the plurality of wheel brake assemblies when the pedaling amount is less than or equal to a first reference, and to control the ESC system so that the fluid pressure supplied to the ESC system brakes all of the plurality of wheel brake assemblies when the pedaling amount is greater than the first reference,
wherein the ECU controls the ESC system so that an increasing rate of a braking force applied to only the part of the plurality of wheel brake assemblies when the pedaling amount is less than or equal to the first reference is different from an increasing rate of a braking force applied to a remaining part of the plurality of wheel brake assemblies when the pedaling amount is greater than the first reference.