Wheel alignment , sometimes referred to as breaking or tracking , is part of a standard car maintenance consisting of adjusting the wheel angle to the manufacturer's specification car. The purpose of this adjustment is to reduce tire wear, and to ensure that vehicle travel is straight and correct (without "pulling" to one side). The adjustment angle can also be changed beyond the manufacturer's specifications to obtain special handling characteristics. Motorsport and off-road applications may request that angles be adjusted well beyond "normal", for various reasons.
More modern vehicles have advanced driver driving systems (ADAS) such as electronic stability control, anti-lock brakes, route departure warnings, adaptive cruise control and traction control. This system can be affected by mechanical alignment arrangements. This causes many manufacturers to request electronic reset for this system after mechanical alignment is performed.
Video Wheel alignment
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The main angle is the smoothing of the base corners of the wheel relative to each other and to the car body. This adjustment is camber, caster, and toe. In some cars, not all can be adjusted on each wheel.
These three parameters can be further categorized forward and back (without the caster behind, usually not piloted). In short, the parameters are:
- Front: Casters (left & right)
- Front: Camber (left & right)
- Home: Legs (left, right & amp; total)
- Back: Camber (left & right)
- Rear: Legs (left, right & amp; total)
Maps Wheel alignment
Secondary corner
The secondary angle includes many other adjustments, such as:
- SAI (Steering Axis Inclination) (left & right)
- Includes angle (left & right)
- Squeeze at the turn (left & right)
- Maximum Round (left & right)
- Changes in the foot curve (left & right)
- Path width difference
- Wheelbase differences
- Height goes up front (left & right)
- High up the back (left & right)
- Frame angle
- Setback (front & back)
The setback is the difference between the right side and the length of the left side wheelbase. It can also be measured as an angle. A setback of less than a factory-specified tolerance (eg, about 6mm) does not affect the car's handling. That is because, when the vehicle is spinning, one wheel is in front of the other with a few centimeters and therefore the setback can be ignored. There are even some car models with different factory settings for long-sided right and left wheelbase, for various design reasons. Off-spec setbacks may occur due to collisions or differences between the right and left castors.
Measurement
The camera unit (sometimes called "head") is attached to a specially designed brace that holds it to the wheels. There are usually four camera units in the wheel alignment system (camera unit for each wheel). The camera units communicate their physical position with respect to other camera units to the central computer that computes and displays.
Often with parallel equipment, this "head" can be a great precision reflector. In this case, the "tower" alignment contains the camera as well as the LED array. The system flashes a single LED array for each reflector while the camera is centered in a LED array "searching" a reflector patterned face image. These cameras perform the same function as other alignment equipment styles, but alleviate many of the problems that are prone to the relocation of heavy camera precision assembly in every serviceable vehicle.
See also
References
Source of the article : Wikipedia
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