9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Vacuum Brake Booster: Description and Operation
With Mark IV ABS System
Manufacturer: Ate/Teves
Type: Vacuum Assisted
Diameter: 203 mm (8 inch)
Power Amplification: 4:1 (at 300 N (66 ft lb) pedal pressure)
The servo unit reinforces the driver's pedal effort when the brakes are applied. The reinforcement of the force applied which is achieved through the
servo unit is obtained from the vacuum in the engine intake manifold, and amounts to around 4:1. The servo unit is connected to the intake manifold by a
hose.
The servo can produce an increase in pressure of up to 80 bar.
Brakes Off
In the rest position (brakes off), the air passage (4) is closed and the vacuum chamber (8) is connected to the working chamber (6) via the open
cross over valve (3). Equal vacuum exists on both sides of the diaphragm (1) in the brakes off position.
Brakes Applied
