The car must run fast, of course, the premise is that it must run straight.I don’t know how many car owners have cared about the trajectory of their car.carWalking 1000 meters on the open straight road, the maximum deviation should also be controlled within four or five meters to be normal. Those who exceed this index are advised to go to a professional repair station for a comprehensive inspection, because deviations can easily cause a variety of dangers, and the consequences must not be ignored.
-reason
In my impression, as long as the car goes off-track, most drivers will think that it is time to do four-wheel alignment. In fact, it is not because there are many reasons for the off-tracking.tireInsufficient air pressure will cause deviation, the degree of tread pattern wear will be different, there will be deviations, suspension system design problems or suspension injuries, deformation, displacement, etc... will all occur deviations, in short, there are many reasons for deviations, but Four-wheel alignment is the same as treating headaches based on colds, and all deviations cannot be solved by just doing four-wheel alignment or balancing.Generally speaking, the problem will mainly focus ontireAnd hang on.
-tire
You can first check the rated tire pressure given by the manufacturer. Most family cars are set between 2.0bar and 2.5bar, and the pressure values of the front and rear wheels are also different. If the tire pressure is not equal, it will definitely cause deviation; for better When using tires, the position of the tires should be changed every 20,000 kilometers, because the wear degree of the driving wheel will always be greater than that of other wheels, and different friction will directly cause deviation.
The correct way to replace the front and rear wheels is to reverse the front and rear wheels in pairs at the same time, an
The car must run fast, of course, the premise is that it must run straight.I don’t know how many car owners have cared about the trajectory of their car.carWalking 1000 meters on the open straight road, the maximum deviation should also be controlled within four or five meters to be normal. Those who exceed this index are advised to go to a professional repair station for a comprehensive inspection, because deviations can easily cause a variety of dangers, and the consequences must not be ignored.
-reason
In my impression, as long as the car goes off-track, most drivers will think that it is time to do four-wheel alignment. In fact, it is not because there are many reasons for the off-tracking.tireInsufficient air pressure will cause deviation, the degree of tread pattern wear will be different, there will be deviations, suspension system design problems or suspension injuries, deformation, displacement, etc... will all occur deviations, in short, there are many reasons for deviations, but Four-wheel alignment is the same as treating headaches based on colds, and all deviations cannot be solved by just doing four-wheel alignment or balancing.Generally speaking, the problem will mainly focus ontireAnd hang on.
-tire
You can first check the rated tire pressure given by the manufacturer. Most family cars are set between 2.0bar and 2.5bar, and the pressure values of the front and rear wheels are also different. If the tire pressure is not equal, it will definitely cause deviation; for better When using tires, the position of the tires should be changed every 20,000 kilometers, because the wear degree of the driving wheel will always be greater than that of other wheels, and different friction will directly cause deviation.
The correct way to replace the front and rear wheels is to reverse the front and rear wheels in pairs at the same time, and do not cross the diagonal front and back; if you need to change a new tire, you should replace the tires of the same brand and the same pattern, and it is best to replace the four tires at the same time; A more common reason may be inaccurate four-wheel alignment. The camber angle of the front wheel, incorrect kingpin angle, or too small toe angle can also cause deviation. The way to avoid it is to spend less time on the road and slow down when the pit is too big. As long as it is normal driving, there is generally no need to go back to four-wheel alignment for one or two years. However, if there is a situation, you must go to a professional repair station for testing. Although some small testing points are cheap, they are not adjusted correctly, and they will relapse after a short period of time.
-suspension
Under normal circumstances, the probability of deviation of a new car due to the suspension system is very low, because the vehicle before leaving the factory has been strictly tested and adjusted by the manufacturer. However, it does not rule out that the original design has problems, such as the movement of the suspension guide rod and the steering tie rod will affect the deviation of the vehicle. The former is caused by errors in manufacturing and adjustment, the latter is caused by the original design, and the latter is mostly caused by deviation to the right.
There are more reasons for the deviation of the old car. In addition to the above, the frame is deformed, the front axle is shifted, there is a negative toe and a hanging arm, and two frontsLeaf springShrapnel is different, there are horizontal and straight rodsBall pinSongkuang and others will cause deviations, so it is necessary to analyze the specific conditions of the old cars. If the deviation is aggravated during braking, it is necessary to check the brake system, because unequal braking forces on the left and right wheels can also cause deviation.First visually inspect the front wheelBrake discWhether there is any oil, water, or hardening on the film;brakeWhen the discs and plates are normal, check whether the brake cylinders are leaking, whether the fixed support plates of the brake calipers are loose, and whether the friction plates are not returning smoothly.
Secondly, the quality of the steering system will also affect the straight-line driving of the car. The loosening of the connecting parts due to the excessive wear gap or the wear of the bearing, king pin and bushing will cause the head of the car to swing while driving, and the normal movement track will not be maintained.ifSteering knuckleThe bending and deformation of the arms and steering knuckles will generally cause the car to deviate in one direction. The most serious is that the ball joint of the horizontal and straight tie rod is severely worn and loosened, which will cause steering failure, and the car will completely lose control at that time.
-harm
A minor run can cause tire gnawing and scrapped tires, while a heavy run can cause dangerous situations such as tire blowouts and out-of-control of the vehicle. According to the survey, for an ordinary family car, the probability of surviving a puncture at 150km/h is less than 20%. Although the deviation is not the kind of problem that can cause the car to break down immediately, it is a long-term driving deviation. There are still many hidden dangers in the vehicle, so once again I advise the owner to get medical treatment as soon as possible.
