Device and method for determining and adjusting the chassis geometry of a vehicle

Method for determining and adjusting a chassis geometry of a vehicle, comprising the following steps:

• Fitting of a steering-wheel balance, and driving the vehicle to a position A, where, at said position A, the vehicle wheels are disposed on devices permitting lateral relaxation of the vehicle,
• Recording of the toe and camber angles as well as the x, y and z positions of the front wheel centers in position A via measuring sensors operating according to the principle of stereophotogrammetry,
• Recording of the toe and camber angles as well as the x, y and z positions of the rear wheel centers in position A via measuring sensors operating according to the principle of stereophotogrammetry,
• Calculation of all the vehicle's toe and camber angles in position A relative to the vehicle's symmetrical axis and to the steering-wheel position,
• Movement of the vehicle to a position B, in which the vehicle wheels not to be aligned stand on devices permitting lateral relaxation of the vehicle and the vehicle wheels to be aligned are disposed on rotary discs,
• Recording of the toe and camber angles as well as the x, y and z positions of the rear wheel centers in position B via measuring sensors operating according to the principle of stereophotogrammetry,
• Calculation of all the vehicle's toe and camber angles in position B relative to the vehicle's symmetrical axis and to the steering-wheel position,
• Calculation of the toe and camber angles of all the wheel axes while compensating for lateral runout,
• Adjustment of the individual front toe angles while the front wheels are on the rotary discs and the angles are measured continuously by the photogrammetrically operating measuring sensors at position B of the front axle.