PRESSURE DAMPING DEVICE OF A BRAKE SYSTEM TO IMPROVE PRESSURE PULSATION REDUCTION EFFECTS USING A SPRING, A DAMPING MEMBER, AND AN AIR DAMPING SPACE

摘要

PURPOSE: A pressure damping device of a brake system is provided to reduce pressure pulsation due to fluid pressure using an air damping space of which volume is changed based on the pressure of a fluid passage connecting two hydraulic circuits.;CONSTITUTION: A pressure damping device (100) of a brake system comprises a cylindrical housing (110), a closure member (120), first and second pistons (131, 132), a spring (134), a damping member (150), and an air damping space (140). The cylindrical housing is fixed on the fluid passage (46) of a hydraulic block (40) to connect a first hydraulic circuit to a second hydraulic circuit. The closure member closes an opened side of the housing. The first and second pistons are spaced apart from each other at a predetermined gap to move back and forth inside the housing. The spring is engaged between the first and second pistons to provide elasticity for the first and second pistons. The damping member is installed on each piston. The air damping space is formed between first and second pistons. The volume of the air damping space changes according to fluid pressure.;COPYRIGHT KIPO 2013