Mando Corporation

Hl Mando Corporation

Seong Ho Choi

Jin Seok Kim

Hyojin Jeong

I Jin Yang

Byung Ki Kim

Byunghak Kwak

Sukku Kim

Jung Hun Han

Seyoung Cheon

Jung Sik Park

Seung Hyun Roh

Sang Hoon Kim

Tae Ju Kim

Yong Kap Kim

Seung Young Park

Hee Chul Jung

Hyunho Kim

Han Sang Chae

Kyung Min Ko

In Wook Jeon

The present disclosure relates to a master cylinder and an electronic brake system having the same. The master cylinder includes a cylinder block having a bore of a multi-stage form in a longitudinal direction therein, a first master chamber and a second master chamber sequentially arranged in series in the bore, a first master piston provided to move in connection with an operation of a brake pedal and to pressurize the first master chamber, a second master piston provided to be displaceable by a displacement of the first master piston or a hydraulic pressure in the first master chamber and to pressurize the second master chamber, and a pedal simulator interposed between the first master piston and the second master piston to provide a reaction force to the brake pedal, wherein a cross-sectional area of the first master piston is provided to be relatively larger than a cross-sectional area of the second master piston.

Master cylinder and electronic brake system comprising same

Disclosed is to an electronic brake system. The electronic brake system includes an integrated master cylinder having a simulation chamber, a first master chamber, and a second master chamber arranged in order from a side of a brake pedal, wherein the integrated master cylinder includes a simulation piston provided to be displaceable by the brake pedal to pressurize the simulation chamber, a first master piston configured to pressurize the first master chamber and having a diameter smaller than a diameter of the simulation piston, a second master piston configured to pressurize the second master chamber and having a diameter smaller than a diameter of the first master piston, and an elastic member interposed between the simulation piston and the first master piston to provide the brake pedal with a reaction force.

Electronic brake system and method for operating same

Disclosed herein an electronic brake system includes a hydraulic pressure supply device including a first pressure chamber and a second pressure chamber partitioned by a hydraulic piston, and a hydraulic control unit, wherein the hydraulic control unit comprises a first hydraulic flow path connecting the first pressure chamber and one of the first and second hydraulic circuits, a second hydraulic flow path branched from the first hydraulic flow path to connect to the other one of the first and second hydraulic circuits, a third hydraulic flow path branched from the first hydraulic flow path on upstream side of a branch point of the second hydraulic flow path to connect the second pressure chamber, and a fourth hydraulic flow path branched from the first hydraulic flow path on upstream side of a branch point of the third hydraulic flow path to connect the third hydraulic flow path.

Electronic brake system and operation method

The present disclosure relates to an electronic brake system. The electronic brake system includes a reservoir in which a pressurized medium is stored, an integrated master cylinder having a master chamber and a simulation chamber, a reservoir flow path provided to communicate the integrated master cylinder with the reservoir, a hydraulic pressure supply device provided to generate a hydraulic pressure by operating a hydraulic piston according to an electrical signal output in response to a displacement of the brake pedal, a hydraulic control unit including a first hydraulic circuit provided to control the hydraulic pressure to be transferred to two wheel cylinders, and a second hydraulic circuit provided to control the hydraulic pressure to be transferred to the other two wheel cylinders, and an electronic control unit configured to control valves based on hydraulic pressure information and displacement information of the brake pedal.

Electronic brake system and operation method therefor

Provided is an electronic brake system. The electronic brake system includes: a reservoir in which a pressurized medium is stored; an integrated master cylinder including a master chamber and a simulation chamber; a reservoir flow path to communicate the integrated master cylinder and the reservoir; a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston according to an electrical signal output in response to a displacement of a brake pedal, and including a first pressure chamber provided on one side of the hydraulic piston accommodated to be movable in a cylinder block and connected to one or more wheel cylinders, and a second pressure chamber provided on another side of the hydraulic piston and connected to the one or more wheel cylinders; a hydraulic control unit having a first hydraulic circuit configured to control a hydraulic pressure transferred to two wheel cylinders and a second hydraulic circuit configured to control a hydraulic pressure transferred to other two wheel cylinders; and an electronic control unit configured to control valves based on hydraulic pressure information and displacement information of the brake pedal.

Electric brake system and operation method

Provided is an electronic brake system including: a reservoir in which a pressurized medium is stored; an integrated master cylinder including a simulation chamber, a simulation piston provided in the simulation chamber to be displaceable by a brake pedal, a master chamber, a master piston provided in the master chamber to be displaceable by a displacement of the simulation piton or a hydraulic pressure of the simulation chamber, an elastic member provided between the simulation piston and the master piston, a piston spring elastically supporting the master piston, a simulation flow path connecting the simulation chamber to the reservoir, and a simulator valve provided in the simulation flow path to control a flow of a pressurized medium; a hydraulic pressure providing unit provided to generate a hydraulic pressure by operating a hydraulic piston according to an electrical signal output in response to a displacement of the brake pedal; a hydraulic pressure control unit including a first hydraulic circuit provided to control the hydraulic pressure to be transferred to two wheel cylinders, and a second hydraulic circuit provided to control the hydraulic pressure to be transferred to other two wheel cylinders; an electronic control unit configured to control valves based on hydraulic pressure information and displacement information of the brake pedal; a backup flow path connecting the simulation chamber to the first hydraulic circuit; an auxiliary backup flow path connecting the master chamber to the backup flow path; and an inspection valve provided in the auxiliary backup flow path to control a flow of the pressurized medium.

The present disclosure relates to an electronic brake system. The electronic brake system includes a reservoir in which a pressurized medium is stored, an integrated master cylinder including a master chamber and a simulation chamber, a reservoir flow path communicating the integrated master cylinder with the reservoir, a hydraulic pressure supply device provided to generate a hydraulic pressure by operating the hydraulic piston according to an electrical signal output in response to a displacement of the brake pedal, a hydraulic control unit including a first hydraulic circuit provided to control the hydraulic pressure transferred to two wheel cylinders and a second hydraulic circuit provided to control the hydraulic pressure transferred to the other two wheel cylinders, and an electronic control unit provided to control valves based on hydraulic pressure information and displacement information of the brake pedal.

Electronic brake system and operation method thereof

A vehicle control apparatus and a method for controlling the same are disclosed. The vehicle control apparatus includes an inputter, a determiner, and a controller. The inputter receives an automatic vehicle hold (AVH) switch operation signal from an AVH device, and receives a current vehicle movement value sensed by a sensing device and a current vehicle brake force value of a brake device that generates brake force in response to activation of the AVH device. The determiner determines whether the received AVH switch operation signal transitions from an ON state to an AVH entry state, determines whether vehicle movement occurs on the basis of the received current vehicle movement value during an AVH retention time in the AVH entry state, and determines that the current vehicle brake force value is in an abnormal state when vehicle movement occurs. The controller receives the current vehicle movement value and the current vehicle brake force value, and transmits a command for judgment to the determiner.

Vehicle control apparatus and method for controlling the same

Provided are an electronic brake system and a method of operating the same, capable of performing a normal operation mode and an abnormal operation mode by including an integrated master cylinder configured to discharge a pressurizing medium according to a displacement of a brake pedal while providing a driver with a pedal fee, a liquid pressure supply device configured to generate a liquid pressure by operating a hydraulic piston according to an electrical being output on the basis of the displacement of the brake pedal, and a hydraulic control unit configured to a liquid pressure of a pressurizing medium to be supplied to each wheel cylinder.

Electric brake system and operating method thereof

The present disclosure relates to a control method of a brake system including a reservoir in which oil is stored, wherein the control method includes detecting a first level of a liquid level of oil stored in the reservoir, detecting a second level of the liquid level of oil stored in the reservoir, determining a decrease trend of an oil amount stored in the reservoir based on a time point when the first level is detected and a time point when the second level is detected, and limiting at least one additional function based on the decrease trend of the oil amount.

Electronic brake system

An electronic brake system and a method for operating the same are disclosed. The electronic brake system includes an integrated master cylinder, a hydraulic-pressure supply device, and a hydraulic control unit. The integrated master cylinder allows a brake fluid to be discharged based on displacement of a brake pedal and at the same time provides proper pedal feel for the user. The hydraulic-pressure supply device generates hydraulic pressure by operating a hydraulic piston in response to an electrical signal that is output in response to displacement of the brake pedal. The hydraulic control unit controls hydraulic pressure of brake fluid supplied to respective wheel cylinders. The electronic brake system operates in different ways according to a normal operation mode and an abnormal operation mode.

Electric brake system and operating method of thereof

An electronic brake system and a method for operating the same are disclosed. The electronic brake system includes an integrated master cylinder, a hydraulic-pressure supply device, and a hydraulic control unit. The integrated master cylinder allows a pressing medium to be discharged based on displacement of a brake pedal and at the same time provides proper pedal feel for the user. The hydraulic control unit controls hydraulic pressure of a pressing medium supplied to respective wheel cylinders. The electronic brake system operates in different ways according to a normal operation mode and an abnormal operation mode.

Electronic brake system and method for operating the same

An apparatus of controlling a region of interest (ROI) in an image and a method for controlling the same are provided to determine a region of interest (ROI) in a forward-view image based on braking information and steering information of the vehicle, and obtain driving assistance information from the ROI image. The apparatus includes an image acquisition device configured to acquire a forward-view image by capturing an image about a forward region of a vehicle, a steering information acquisition device configured to acquire steering information by detecting a steering direction and a steering angle of the vehicle, a braking information acquisition device configured to acquire braking information by detecting a braking or non-braking state and a deceleration of the vehicle, and a controller configured to determine a region of interest (ROI) within the forward-view image based on at least one of the steering information or the braking information of the vehicle.

Apparatus of controlling region of interest of image and method for controlling the same

An electronic brake system and a method for operating the same are disclosed. The electronic brake system includes a hydraulic-pressure supply device and a hydraulic-pressure control unit. The hydraulic-pressure supply device operates a hydraulic piston using an electric signal corresponding to a displacement of a brake pedal, and thus generates hydraulic pressure. The hydraulic-pressure control unit controls hydraulic pressure of a pressure medium supplied to individual wheel cylinders. The electronic brake system controls a plurality of valves mounted to the hydraulic-pressure control unit, and thus performs a normal operation mode, an abnormal operation mode, a regenerative braking mode, and an inspection mode using the valves.

Growing community of inventors

Gyeonggi-do, South Korea

Seong Ho Choi