초록 ▼

The present invention provides a non leak check valve typed traction control valve. A low pressure check valve 8, which is provided in a pressure rise channel independent of a main oil passage of a TCV (Traction Control Valve), is opened during the normal braking when a driver operates a brake. Acco

The present invention provides a non leak check valve typed traction control valve. A low pressure check valve 8, which is provided in a pressure rise channel independent of a main oil passage of a TCV (Traction Control Valve), is opened during the normal braking when a driver operates a brake. Accordingly, oil pressure corresponding to the degree of braking is quickly provided. Further, when the TCS (ESP) is operated on the basis of signals from various sensors for the purpose of stably driving a vehicle even though the brake is not operated, the low pressure check valve provides an excellent airtight seal against the pressure rise channel. Therefore, pressure capable of controlling a wheel cylinder is sufficiently maintained at low pressure (10 bar or less).

대표청구항 ▼

What is claimed is: 1. A non leak check valve typed traction control valve, comprising:a plunger that is operated by an armature and includes a contact portion so as to open or close a channel, the armature being surrounded by a coil to which electric power is applied during the operation;a valve bo

What is claimed is: 1. A non leak check valve typed traction control valve, comprising:a plunger that is operated by an armature and includes a contact portion so as to open or close a channel, the armature being surrounded by a coil to which electric power is applied during the operation;a valve body that includes a flow hole formed in a radial direction and a pressure rise channel formed in an axial direction parallel to a main flow channel formed therein, oil flowing from a master cylinder to the flow hole when the valve body is press-fitted into a pump housing, and the plunger being received in a chamber of the valve body;a plunger seat that is received in the chamber of the valve body and forms the main flow channel in an axial direction therein; a supporting member that is inserted into the valve body so as to be adjacent to the plunger seat and supports the plunger seat;a spring that elastically supports the plunger against the plunger seat;a main plunger valve that comes in contact with or is separated from the contact portion of the plunger or the plunger seat to open or close the main flow channel;a low pressure check valve that closes the portion of the valve body facing the pressure rise channel in order to close a channel corresponding to the master cylinder and maintains pressure capable of controlling a wheel cylinder during the operation of TCS (ESP), the low pressure check valve comprising:a body shaft that is inserted into the pressure rise channel of the valve body so as to form a channel space,a fixation body that forms one end of the body shaft and has a larger diameter than the body shaft, anda sealing cap that forms a sealing contact surface coming in close contact with a low pressure check valve receiving groove, which has a large diameter at an end of the pressure rise channel; anda front filter that is fixed to an end of the valve body, filters off impurities from oil, and is press-fitted and closely supported by the pump housing.