gf4231p3000a

BAS function in normal operation

Typ gf · téma 42.31 · verze 0107 · 2008-03-25

Platí pro: MODEL 129, 140 as of 1.12.96, 210 as of 1.2.97, 170, 202 as of 1.6.97, 168 up to 28.2.01, 163, 208, 209, 215, 220 MODEL 203 up to Model Year 08 /Modification Year 07

Není k dispozici v jazyce „cs“; zobrazeno v jazyce Angličtina.

Zařazení

Funkční skupina 2 Podvozek › 42 Brzdy - hydraulická část a mechanická část › 42.31 Brzdový asistent (BAS) — Řada 129 · Řada 140 · Řada 163 · Řada 168 · Řada 170 · Řada 202 · Řada 203 · Řada 208 · Řada 209 · Řada 210 · Řada 215 · Řada 220

GF42.31-P-3000A

BAS function in normal operation

18.3.08

MODEL 129, 140 as of 1.12.96,
210 as of 1.2.97,
170, 202 as of 1.6.97,
168 up to 28.2.01,
163, 208, 209, 215, 220

MODEL 203 up to Model Year 08 /Modification Year 07

BAS function in normal operation

P42.31-0212-76

Brake application in normal operation

The BAS brake booster (A7/7) is supplied continuously via the vacuum line with intake manifold vacuum or pump vacuum on diesel models. If the brake is not actuated, equal vacuum exists on both sides of the diaphragms. The compression spring holds the diaphragm disks in their starting positions.

On brake application, outside air is fed to the back of the diaphragms via a duct. A pressure difference that increases with the braking is created between the front and rear chambers of the booster and the resulting force acts in the direction of the master brake cylinder and supplements foot pressure.

Illustration shows partial braking

a Atmospheric pressure

b Reduced vacuum

c Vacuum

BAS pressure increase function

GF42.31-P-3100A

BAS pressure reduction function

GF42.31-P-3200A

BAS brake booster, location / task / design / function

GF42.31-P-4000A

BAS control unit, location / task / function

GF42.31-P-4500A

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