Judgment and elimination of deviation in the direction of vehicle driving

Hello, the current number of people consulted may not reply in a timely manner, if it is a vehicle failure problem, it is recommended to use the computer to detect the specific cause of the failure, search for "car master" can consult car problems at any time, 24 hours ** answer.

Clause. First, if there is a feeling of deviation, then first judge whether it is a problem with the road.

If the road surface is sloping, then the car will be tilted to the lower side. The general road, for drainage and other considerations, is basically high in the middle and low on both sides, the car is driving on the right, there will naturally be a tendency to deviate to the right, the greater the slope of the road, the more obvious this tendency, to a certain extent, you need to hold the steering wheel hard to maintain the direction.

Clause. Second, if there is no problem with the road, then look for the problem from the car.

1. The loading items are unbalanced.

2. The tire pressure on both sides is inconsistent, the solution is, of course, to add the standard tire pressure, and see if the wear of the wheels on both sides is inconsistent, so that the wheel diameter and traction are different.

3. The degree of wear of the tread pattern is not the same, and it will deviate; If the springs and shock absorbers are damaged, focus on the lower side to see if there is any overcompression of the spring due to insufficient elasticity and oil leakage from the shock absorber.

4. Suspension injury, deformation, displacement, etc. will cause deviation.

5. The quality of the steering system will also affect the straight line of the car.

6. Caused by brakes.

1. Relax your mind and find a target

Take it easy while driving, and keep your eyes on the fixed target in the distance ahead while driving. objects, the farther the line of sight, the earlier you can detect whether it deviates from the direction during driving.

2. Observe through the rearview mirror

Learn to observe the road situation through the left and right mirrors, and you will be able to detect the deviation from the direction after many exercises.

3. Timely correction

Once the vehicle deviates, it should be corrected in time, and the range of action should not be too large when correcting, and the small angle can be fine-tuned.

Fourth, control the correction range

If the speed of the car is fast at this time, you can refer to the "two-finger or three-finger principle" when driving at high speed, and the actual distance of the direction of rotation is two or three fingers wide.

Looking out of the way while driving is the easiest and best way to tell if a vehicle is off-track. When you see a deviation, you can return to the right in time. There is also the ability to look at references on the road, such as white lines. However, it is not advisable to keep an eye on the road and keep an eye on the road, and you should look ahead when driving.

It is common for a car to drive in the direction that it deviates. If the fault is not eliminated in time, it is very dangerous, and it can generally be solved by doing four-wheel alignment. If it cannot be ruled out, it may be caused by other reasons, and the cause must be found before the fault can be completely eliminated.

Common causes are as follows:

1.The tire pattern on both sides is different or the depth and height of the pattern are different. It is best to use the same type of tires for the whole car. At least the two tires on the front axle and the rear axle must be the same, and the tread depth must be the same. If the wear limit is exceeded, it must be replaced.

2.The tire pressure on both sides is not equal. Unequal tire pressures can cause tires to vary in size, which can inevitably deviate when rolling. 3.The deformation of the buffer springs on both sides of the front shock absorber is inconsistent. The quality of the shock absorber spring can be judged by the comparison after pressing or dismantling.

4: The front shock absorber fails. After the failure of the front shock absorber, when the vehicle is driving, the two suspensions are unevenly stressed, one high and one low, resulting in deviation. The absorption of the shock absorber can be detected by a special shock absorber tester to judge and repair the quality of the shock absorber in time.

5.Excessive wear and tear of vehicle chassis parts with abnormal clearances. Steering rod ball joint, rubber sleeve for support arm, rubber sleeve for stabilizer bar, etc. It is a common part with too much clearance and should be carefully inspected by the lifting vehicle.

6.Poor brake return separation of a tire can also lead to directional deviation. This is equivalent to the fact that partial braking is always applied on one side of the wheel, and the vehicle will inevitably deviate while driving.

7.The overall deformation of the frame. If the wheelbase difference between the two sides is too large and exceeds the maximum allowable range, it can be measured with a tape measure. If it is out of range, it must be corrected by means of a calibration table.

8.Another reason for the direction deviation is that when installing the tire (one-sided tire), you did not pay attention to the direction of the tread (it cannot be the same direction), and see if you paid attention to the direction of the tread when installing the tire. If Duan Youguo is, just change it.

Summary: Basically, these are the reasons why the vehicle is mistracked. If it's just a tire problem, you can try to correct it yourself. But if it involves the chassis, shock absorbers, frame, etc., it is best to go to a specialty store for repair as soon as possible.

Millions of car purchase subsidies.

1. This situation generally appears in the model of mechanical hydraulic power steering, which is a very common way of steering power in the past, referred to as HPS in English, with mature and reliable technology and low cost. This type of steering power assist converts a part of the engine's power output into hydraulic pump pressure, which exerts auxiliary force on the steering system to steer the tires. When the square loss pure to Bikong filial piety disc is not rotated, the pressure in the chamber on both sides of the piston is the same and is in a balanced state.

When the steering wheel rotates, the mechanical control valve connected to the steering column will be opened or closed accordingly, one side of the oil will no longer pass through the hydraulic cylinder and directly flow back to the oil storage tank, the other side of the oil continues to be injected into the hydraulic cylinder, the pressure difference between the two sides of the piston will be pushed under the action of the hydraulic force, and then produce auxiliary force, at this time we will feel that the steering wheel is not so laborious.

2. The steering pump drives the belt to slip. The steering pump is driven by a belt, and if the friction between the belt and the pulley is too small, the belt will slip on the pulley, and there will be a squeaky sound at this time. It may be caused by loose belt adjustment, excessive wear of the grooves of the pulley, or the new belt does not fit well with the old pulley.

A simple way to tell is to pour a little water on the belt when there is a loud manuscript, and if the sound goes away, it means that the belt is slipping. At this time, first adjust the tension of the belt, if there is still a sound after adjustment, you can use it for a period of time to make the belt and the pulley fully match and then see if it is still ringing, if it is still ringing, you have to replace the pulley.

What to do if the steering wheel of the car is abnormal.

1. The sound of rebounding the clip after the turn signal.

2. The sound of the dust jacket of the direction column.

Whether you are in place or driving as long as you hit the steering wheel, you will hear the sound coming from under the steering wheel, you should check the steering post dust jacket, once the steering post dust jacket lacks lubrication, it will produce a dry friction sound, you just need to apply some butter in the dust jacket This sound will disappear.

How to drive in a straight line without drifting, there are also reasons for the phenomenon of vehicle separation. Generally speaking, the phenomenon of wide grip on the base of deviation is that it is not easy for the car to maintain a straight line when driving, and it always needs to automatically deviate to a specific direction. This is bias.

Left and right generally do not ignore left and right. If it appears left and right, it is best to check the steering wheel. The following problems are common when an empty car deviates from the straight road without considering the balance between the road and the things on board.

Tire pressure is unstable. Long driving times can lead to unstable tire pressure and mistracking due to tire wear.

Damaged springs and shock absorbers, which can also affect the deviation of the vehicle, can be checked. In addition, it is also a problem with the steering system. Usually driving habits may exert force in one direction, and even if fatigue occurs, memory will be skewed, so the key is to check these places.

If there is a problem with the tire, it can be replaced. Some models deviate from the factory due to design and manufacturing reasons, and the steering system of the chassis of other models is not in harmony with the braking system and suspension system, and automatically disengages when braking or decelerating.

They are so-called tyre-induced failures that are basically unmanageable. The interference of the movement between the guide rod and the steering rod of the suspension, as well as the deformation of the suspension during braking, can lead to the movement of the steering rod, which leads to the mistracking of the car. This phenomenon is the same as that of Dongfeng Motor, where part of the front axle is visible as a full axle on the truck.

Front-wheel drive vehicles tend to turn to the right when accelerating, which is due to torque steering caused by the unequal length of the half-axles on both sides of the vehicle in front. This is an inherent characteristic of the vehicle ahead, not a malfunction. Generally, the greater the horsepower, the larger the vehicle in front, the more obvious this distortion phenomenon is, and it is not obvious in small displacement vehicles.

Because tires will cause a lot of car mistracking, the first thing we need to check when the car is misaligned is the tire.

For example, if the tire pressures on both sides of the same axle hole line are different, the car will be biased towards the side that lost the tire. The tire size on both sides of the coaxial is different, and the tire diameter is not the same, so the distance the wheels travel at the same speed is also different, and the tire diameter of the car also tends to be on the smaller side, which can happen after replacing the full-size spare tire. The tire pattern on both sides of the same axis is different, and the adhesion between the tire and the floor is inconsistent, which may lead to deviation.

In addition, some models use one-way or asymmetrical tread tires that can deviate during driving if not installed in the specified direction.

The reasons for the deviation of the vehicle during driving: 1. The road conditions are uneven, and the flat ordinary highway design is high in the middle and low on both sides; 2. The tire pressure is inconsistent, and the tire pressure on both sides is unbalanced, and the road conditions are uneven; 3. The tire wear is unbalanced, the vehicle should regularly change the position of the tire, the wear degree of the driving wheel will be larger than that of other wheels, and the inconsistent wear of the tire on the bright side of the two will also cause the direction of the car to deviate; 4. Damage to the components of the chassis suspension system, such as the bending and deformation of the steering knuckle arm and steering knuckle, the deformation of the shock absorber, and the loosening of the ball joint of the swing arm; 5. The mileage is too long, and the poor road conditions lead to changes in tire positioning parameters; 6. The accident repair parameters are unqualified, the wheelbase length on both sides is inconsistent, the wheelbase difference on both sides is too large, and it has not been corrected in time, or it does not meet the technical requirements after correction.

The method of judging the deviation of the car is very simple, that is, under the premise that the steering wheel remains immobile in the car, it is generally driven in a straight line in most cases. The following is the specific introduction:1

To pay attention to the road surface problem, first of all, to ensure the level of the road surface, in the country road and the general road surface of the city is non-level, which will affect the driving route of the car. 2.If there is a deviation to the left or right, it is called mistracking.

3.Generally, the car drives 1000 meters on a flat straight road, and the maximum deviation should be controlled within four guesses and five meters to be considered normal. If this indicator is exceeded, it means that the car has mistracked.

4.Since the domestic road surface is high in the middle and low on both sides, the domestic regulations set to drive on the right, which will lead to a slight deviation to the right. This factor is a fact that cannot be changed.