Patent ID: 11890967
Assignee: HYUNDAI MOBIS CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  F  Y | IPC B

Claim 0:
1. A brake system, comprising:
a pedal master unit comprising:
a master cylinder, and
an operating rod configured to transmit, to the master cylinder, a pedal effort generated by a depression on a pedal;
an electric booster unit comprising:
a motor,
a motor piston configured to depress the master cylinder, and
a gear device-screw shaft combination configured to convert a rotational motion of the motor into a linear motion of the motor piston;
a pedal-feel generating unit comprising:
a reaction disk configured to form a first pedal feel force (FRD) when depressed by one or more of the operating rod and the motor piston, and
a pedal spring having one end connected to the operating rod and another end supported by the electric booster unit and arranged to form a second pedal feel force (Fspring) that is dependent on a distance between the operating rod and the electric booster unit; and
an electric control unit configured to variably control, in a regenerative braking mode and in a hydraulic braking mode, a rate of increase of the first pedal feel force (FRD) formed by the reaction disk for a pedal stroke to the pedal, and a rate of increase of the second pedal feel force (Fspring) formed by the pedal spring for a pedal stroke on the pedal.