Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
BRAKE HYDRAULIC CONTROL DEVICE
Document Type and Number:
Japanese Patent JPH02299961
Kind Code:
A
Abstract:

PURPOSE: To smooth initial brake operation by a method wherein an oil pressure feed source hydraulic control means to control an oil pressure from an oil pressure feed source based on an oil pressure responding to a pedaling amount of a brake pedal is formed so as to rapidly increase a brake pressure during the initial stage of brake control operation.

CONSTITUTION: During usual braking, based on an oil pressure generated by an oil pressure generating means 3 and responding to a pedaling amount of a brake pedal 1, an oil pressure from an oil pressure feed source 2 is controlled by an oil pressure feed source hydraulic control means 4. The controlled oil pressure is fed through one-way oil pressure transmission means 5FL, 5FR, and 5R to brake devices BFL and BFR for front wheels and brake devices BRL and BRR for rear wheels. In this case, the oil pressure feed source hydraulic control means 4 increases a pressure in an output oil pressure 59 by intercommunicating input and output ports 40 and 39 through forward movement of a spool 34 during braking, and is formed such that no reaction force is exerted on a press piston 36 until a reaction force piston 35 is brought into contact with the spool 34 against a spring force. A brake pressure can be rapidly increased during the initial stage of brake operation.


Inventors:
HORIUCHI MAKOTO
MIZUSAKI YOSHINOBU
MATSUDA SHOHEI
Application Number:
JP1989000121891
Publication Date:
December 12, 1990
Filing Date:
May 16, 1989
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NISSIN KOGYO KK
HONDA MOTOR CO LTD
International Classes:
B60T8/40; (IPC1-7): B60T8/40