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Pohang, South Korea

Patent
Mando Corporation | Date: 2015-04-10

Disclosed is a solenoid valve for a brake system, the solenoid valve including a magnet core that is provided in a cylindrical shape, is installed in a bore of a modulator block, and has a through-hole opening in a lengthwise direction thereof and a radial direction passage communicating with the through-hole; an armature that is installed at one end of the magnet core so as to be reciprocated; a valve seat that is provided at the other end of the magnet core and has an orifice; a plunger that is inserted into the through-hole and performs a sliding motion by the armature to open and close the orifice; a sleeve that is fixed to the bore while accommodating the armature and the magnet core; and a return spring that is provided to apply an elastic restorative force to the plunger to open the orifice, wherein a passage hole is provided in a spiral shape along the through-hole at an inner circumferential surface of the magnet core to discharge air between the magnet core and the plunger and air between the magnet core and the armature.


Patent
Mando Corporation | Date: 2015-04-10

A method for electronic stability control of a vehicle includes a compensated moment calculation operation of calculating a compensated moment according to an error between a desired turning speed calculated based on a steering angle and a vehicle speed of the vehicle and a turning speed of the vehicle; a compensated moment comparison operation of comparing the compensated moment calculated in the compensated moment calculation operation with a first reference value and a second reference value; steering rear wheels of the vehicle if it is determined that the compensated moment is equal to or larger than the first reference value and smaller than the second reference value; and a simultaneously performing steering of rear wheels of the vehicle and braking of the vehicle if it is determined that the compensated moment is equal to or larger than the second reference value.


The adaptive cruise control system interlocking with the LKAS includes: a radar configured to detect a preceding vehicle ahead and measure an inter-vehicle distance; and an electronic control unit configured to control acceleration and deceleration of a vehicle according to a request acceleration calculated to maintain an appropriate distance from the preceding vehicle. The electronic control unit calculates a maximum request acceleration that is changed according to an auxiliary steering torque received from the LKAS which prevents lane departure and a change amount in the maximum request acceleration, and controls acceleration and deceleration of the vehicle based on a final request acceleration determined by using the calculated maximum request acceleration, the calculated change amount in the maximum request acceleration, and the calculated request acceleration.


Patent
Mando Corporation | Date: 2015-04-15

The present invention relates to a pulsation reduction apparatus of a hydraulic piston pump, comprising: a block housing that has one end connected to the first hydraulic circuit and the other end connected to the second hydraulic circuit; a damper that is embedded in the block housing, absorbs pressure resulting from working fluid introduced to the first hydraulic circuit, assists with pressure increase of the second hydraulic circuit, and allows shape deformation; and viscosity damping units that are embedded in the block housing, are arranged between the first hydraulic circuit and the damper and between the second hydraulic circuit and the damper, and reduce viscosity of the working fluid introduced from the first and second hydraulic circuits, thereby reducing pressure pulsation and stably performing shock absorption and pressure increase at the same time with a relatively simple configuration.


A piston pump assembly of an electronic controlled brake device for a vehicle includes: an inlet housing configured to accommodate a reciprocating piston and elastically support the piston; an outlet housing configured to accommodate the inlet housing and form a working chamber that allows a working fluid to be introduced from the inlet housing; an outlet ball valve accommodated in the working chamber to open and close a flow passage of the working fluid that is introduced from the inlet housing to the outlet housing; an outlet spring accommodated in the working chamber to elastically support the outlet ball valve toward the inlet housing; and a damper accommodated in the working chamber and mounted within the outlet spring to allow shape deformation while contacting the outlet ball valve. When the outlet ball valve is pushed and pressed toward an end of the working chamber, the damper generates viscous damping while discharging the accommodated working fluid into the working chamber. Accordingly, it is possible to actively reduce noise or vibration upon initial operation of the electronic controlled brake device or in a low frequency section, thereby improving ride comfort.

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