gf4245w2001mp

Intervention of stability control (SR) when understeering or oversteering, function

Typ gf · téma 42.45 · verze 0102 · 2005-09-06

Platí pro: MODEL 375.4, 934, 944, 954 with CODE (BB7) Stability control (SR)

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

Zařazení

Funkční skupina 2 Podvozek › 42 Brzdy - hydraulická část a mechanická část › 42.45 Elektronický stabilizační systém (ESP), regulace stability (SR) — Řada 375 (modely 4**) · Řada 934 · Řada 944 · Řada 954

GF42.45-W-2001MP

Intervention of stability control (SR) when understeering or oversteering, function

3.10.02

MODEL 375.4, 934, 944, 954 with CODE (BB7) Stability control (SR)

Requirements

Vehicle speed > 10 km/h

Stability control (SR) is switched on, the stability control indicator lamp (INS) has gone out.

If the stability control indicator lamp flashes, switch on the stability control (SR) with the SR shutoff switch

Function

While driving the vehicle dynamics control (FDR) control unit constantly records via the signals from the steering wheel angle sensor the nominal course specified by the driver and compares this with the actual course. The vehicle dynamics control (FDR) control unit calculates the actual course taking into account the vehicle speed from the signals of the sensors for yaw rate and lateral acceleration integrated in the vehicle dynamics control (FDR) control unit.

The vehicle dynamics control (FDR) control unit triggers wheel-individual brake interventions for course correction via the brake control (BS/EPB) control unit as soon as it detects a deviation between the specified course and the actual course.

Intervention of stability control (SR) when understeering or oversteering, function

W42.45-1004-11

Intervention by the brake system when understeering

If the tractor vehicle brakes away above the front axle, a yawing moment is built up by selective braking of the rear wheel on the inside of the curve, which turns the tractor vehicle into the curve so as stabilize it.

The stability control indicator lamp in the instrument (INS) lights up during the automatic intervention by the brake system.

1 Nominal course

2 Actual course

Intervention of stability control (SR) when understeering or oversteering, function

W42.45-1005-11

Intervention by the brake system when oversteering

If the tractor vehicle brakes away above the rear axle, the oversteering handling is counteracted by specific braking of the front wheel on the outside of the curve. Simultaneously the semitrailer is braked via the trailer control valve and jackknifing of the semitrailer/tractor combination by straightening the semitrailer/tractor combination.

The stability control indicator lamp in the instrument (INS) lights up during the automatic intervention by the brake system.

1 Nominal course

2 Actual course

Vehicle dynamics control (FDC) control unit, location/task/design

GF42.45-W-3001MP

Steering wheel angle sensor, location/task/design

GF42.45-W-3002MP

Stability control cutout switch, location/task

Model 375.4, 944, 954

GF42.45-W-3003A

Model 934

GF42.45-W-3003MP

Stability control indicator lamp, location/task

GF42.45-W-3004MP

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