Title:
ANTI-LOCK AND TRACTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JPS6478963
Kind Code:
A
Abstract:
PURPOSE:To make an anti-lock and traction control device in small size and simplify the liquid pressure circuit by furnishing in a cylinder an ALS piston and a TCS piston which are actuated by the accumulator liquid pressure, and by performing control with movement of the two. CONSTITUTION:A communication path 7 is formed from an input port 3 to an internal cylinder 5, and further from its opening at one end to an output 4 via a cylinder 2, and a TCS gate valve 11 and an ALS gate valve 12 are arranged oppositely on this communication path 7 between the input and output ports 3, 4. Here a control device 71 judges on the basis of signal from a sensor 72 that there is a lock on wheel, and closes a cut valve 65 valve and opens a build valve 66, and then exhausts the pressure liquid in No.2 back pressure chamber 53 to a reserver 61 via a decay valve 64, and then the ALS piston 34 is moved to the left and the ALS valve 31 closed to absorb the brake pressure in the ALS liquid pressure chamber 51 to cause decompression and thus lock is avoided. Thereby the construction can be simplified.
Inventors:
MAEHARA TOSHIFUMI
Application Number:
JP23571887A
Publication Date:
March 24, 1989
Filing Date:
September 19, 1987
Export Citation:
Assignee:
AKEBONO RES & DEV CENTRE
International Classes:
B60T8/46; B60T8/175; B60T8/48; B60T8/58; (IPC1-7): B60T8/46; B60T8/48; B60T8/58
Attorney, Agent or Firm:
Munenori Sato (1 person outside)