
ALB Description
Features/Construction/Operation
If brake inputs (force
on brake pedal) are excessively large and a possibility of wheel locking occurs, the control
unit operates the solenoid valve, closing the outlet valve and opening the inlet valve. As a result, the high pressure is
directed into chamber C, the piston is pushed upward, causing ths slide piston to move upward and the cut-off valve to
close.
As the cut-off valve closes, the flow from the master cylinder to the caliper is interrupted, the volume of chamber B,
which is connected to the caliper, increases, and the fluid pressusre in the caliper declines.
When both of the two valves, inlet and outlet, are closed (when only the outlet valve is activated) the pressure in the
caliper is maintained constant.
When the possibility of wheel locking ceases, it is necessary to restore the pressure in the caliper. The solenoid valve is
therefore turned off (outlet valve: open, inlet valve closed).
Process
Caliper Pressure
Outlet Valve
Inlet Valve
Electric
Hydraulic
Electric
Hydraulic
Power
Circuit
Power
Circuit
O N
Close
ON
Open
Caliper pressure constant
H o l d - O N
Caliper pressure increasing
O F F
Close
Open
OFF
OFF
Close
Close
Slide Piston Function
When the car is used on rough roads where the tires sometimes lose adhesion, the anti-lock brake system may function
excessively, causing an excessively large volume of brake fluid to flow into the chamber C. As this occurs, the piston is
moved excessively, resulting in an abnormal loss of pressure in the chamber B. In order to overcome this problem, the
slide piston is kept in the proper position by the spring force to avoid a negative pressure in the chamber B.
RESERVOIR
\
P I S T O N
MASTER
CHAMBER D
CYLINDER
Kickback
ACCUMULATOR
P R E S S U R E
SWITCH
\
CHAMBER C
When anti-lock brake system is functioning, the piston moves upward, the volume of chamber B increases, and the fluid
pressure on the caliper side is reduced. At the same time, the volume of chamber A is reduced and the brake fluid is
returned to the master cylinder. When the brake fluid is pushed back to the master cylinder, the driver can feel the func-
tioning of the anti-lock brake system because the brake pedal is kicked back.
19-36
Summary of Contents for Acura NSX 1991
Page 1: ... j s _ _ ...
Page 3: ......
Page 22: ...Special Tools Individual tool lists are located at the front of each section ...
Page 23: ...Specifications Standards and Service Limits 3 2 Design Specifications 3 l 1 ...
Page 39: ...Body Specifications m I 1 175 46 3 Unit mm in ...
Page 40: ...Maintenance Lubrication Points 4 2 Maintenance Schedule 4 4 ...
Page 42: ... 13 I 0 4 3 ...
Page 60: ...Engine Removal Installation ...
Page 81: ...lr I 6 7 ...
Page 191: ... n EilEli3 A A A Cl51 c4 BLU 1 TACHO METER CONNECTOR Cl61 C478 C488 REDlYEL YELlRED J A GlOl ...
Page 193: ... PGM FI 1 IDLE CONTROL 1 FUEL SUPPLY 1 EMISSION CONTROL II 17 ...
Page 207: ...II 31 ...
Page 211: ...I I 35 ...
Page 219: ... cont d II 43 ...
Page 235: ...1 l 59 ...
Page 255: ...11 79 ...
Page 285: ...1 l 109 ...
Page 434: ...t 14 46 ...
Page 477: ...14 95 ...
Page 482: ...Illustrated Index L Side Cover 14 100 ...
Page 484: ...Illustrated Index Transmission Housing 14 102 ...
Page 486: ...Illustrated Index Torque Converter Housing Valve Body ...
Page 527: ...3 Assemble the transmission in the following numbered sequence Replace cont dl ...
Page 551: ......
Page 698: ...9 Nom 0 9 kg m 7 lb ft REAR 9 Nom 0 9 kg m 7 lb ft ...
Page 724: ...19 37 ...
Page 766: ...19 79 ...
Page 888: ...Frame Repair Chart 20 62 ...
Page 893: ...22 5 ...
Page 937: ...22 49 ...
Page 950: ...Blower 22 62 ...
Page 971: ...22 83 ...
Page 1003: ... JND WIRE EN NE GROUND WIRE B ...
Page 1005: ... lzl A ENGINE W I R E H A R N E S S cont d 23 l 9 ...
Page 1007: ... rl p173 5 Cl34 Cl32 Ti03 23 21 ...
Page 1009: ...C2bl c262 I C203 cont d 23 23 ...
Page 1011: ... rl SUB RELAY BOX A cont d 23 25 ...
Page 1013: ...FRONT COMPAR 23 27 J ...
Page 1015: ...e RIGHT RETRACTOR SUB HARNESS I LEFT RETRACTOR SUB HARNESS I ...
Page 1019: ...C466 C465 C468 C464 c473 FLOOR WlFiE HARNESS co d 23 33 ...
Page 1021: ... ITI RETRACTABLE HEADLIGHT CONTROL UNIT i FLOOR WIRE HARNESS 23 35 ...
Page 1023: ...MAIN FUSE BOX I 23 37 ...
Page 1027: ...DRIVER S DOOR WIRE HARNESS PASSENGER S DOOR WIRE 23 41 ...
Page 1029: ...SRS CONTROL UN FUEL TANK WIRES 23 43 ...
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Page 1275: ...1 ACTUATOR ASSEMBLY SPEED SENSOR 23 l 33 ...
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