3.2 Release Pressure—An increase of parking chamber air pressure to release the parking brake (compress power spring). 3.3 Parking Chamber Apply—Extend power spring. 3.4 Parking Chamber Release—Compress power spring. 3.5 Full Stroke—Maximum stroke of a unit. ...
In the case where the wheel-cylinder pressures are electrically controlled in response to the depression of the brake pedal 10, the solenoid-operated open-close valve 40 is opened and the brake liquid is discharged from the pressure chamber 20 into the stroke simulator 42, so that the driver ...
Also provided is a stroke simulator fluid path66configured to be branched from a branch point of the primary fluid path60P between the primary fluid-pressure chamber3cand the shutoff valve61P. Stroke simulator fluid path66is connected to a stroke simulator80. A stroke-simulator shutoff valve65...
Test Procedure Fully cage the power spring in the parking chamber pneumatically. Record the distance from a reference point on the actuator pushrod to a fixed point of the actuator to obtain the zero stroke position. Release the power spring and allow the pushrod to return to its full stroke...
At step S2, the brake ECU 60 obtains a manipulation amount Z1 of the brake pedal 21 based on the detection signals of the pedal stroke sensor 21a and the pressure sensor P and calculates a driver target brake amount FT1 corresponding to the manipulation amount Z1 from the operation property...
for defining a control pressure chamber 122 which is in communication with the inlet port 12a. On the other hand, the smaller diameter section 121b of the spool 121 extends through a center opening 120f defined through the partitioning wall 120c to extend into the bore 120b. The outer diam...
As mentioned above, the input rod241has one end connected to the brake pedal16and the other end inserted into the primary chamber215of the master cylinder212. When the brake pedal16is depressed to move the input rod214linearly, the pressure of the hydraulic fluid in the primary chamber215incr...
in a direction of the ball receiving chamber860. Thus, as will be seen from FIG. 2B, when the brake fluid is forced to flow into the upper chamber part89, the piston83is moved down against the biasing force of the spring85allowing the upper chamber part89to serve as a brake fluid res...
Methods and systems for measuring a brake stroke of an air brake assembly utilize a sensor, such as an accelerometer, mountable on a movable component, such as a brake cam shaft, of
3, first and second piping systems 30 and 40, which are respectively communicatively connected to a primary chamber and a secondary chamber of the M/C 5, are formed inside the actuator 7. The first piping system 30 controls the brake fluid pressure that is applied to a front left wheel ...