When the car is moving, the big turn turns into a small turn, why?

Cause analysis: The two phenomena that occur during the steering are called insufficient steering in the former and excessive steering in the latter, indicating that there is a problem in the steering system.

The driver's perception when the car accelerates while steering around the car is that a car with insufficient steering performance will go to the outside side, and a car with oversteer will go inside. When the travel radius becomes larger, it is called understeer.

When the travel radius becomes smaller, it is called oversteer.

There is also a phenomenon of steering, which is initially understeer, but in the middle of the process it becomes oversteer, and it turns sharply inward. This is the most dangerous reversal phenomenon and is prone to accidents. This only happens in individual rear-engined cars.

Brief explanation: the turning radius is related to the wheelbase and wheel base. When the car turns, according to the signal given by the driver hitting the steering wheel, the steering machine of the vehicle works, because the rolling friction and sliding friction of the left and right wheels of the car are not the same when steering, so that the strength of the steering machine is different, and the help of the differential is needed to alleviate this problem, then if your turning radius is too small and the speed is very large, then the differential and steering machine of the car are very bad, if the speed is large, it is very likely to overturn the car, and the consequences are unimaginable.

The turning radius is small, it is easy to turn, make a U-turn, and it is easier to reverse into position, which is an evaluation index of the car's handling. The minimum turning radius is related to the wheelbase, vehicle width, tire size, etc.

Cause analysis: The two phenomena of 2113 that occur during steering are called insufficient 5261 steering, the latter is called 4102 oversteering, and 1653 indicates that there is a problem with the steering system. There is also a phenomenon of steering, which is initially understeer, but in the middle of the process it becomes oversteer, and it turns sharply inward.

This is the most dangerous reversal phenomenon and is prone to accidents.

1.These two phenomena that occur when steering: the former is called understeer, and the latter is called oversteering, indicating that there is a problem with the steering system. There is also a phenomenon of steering.

2.Initially, it was understeer, but in the middle of the process, it turned into oversteer, and it turned sharply inward. This is the most dangerous reversal phenomenon and is prone to accidents.

3.This only happens in individual rear-engined cars. Remember to repair it in time.

Can you describe the problem more precisely?

The centrifugal force increases, and the longitudinal load of the vehicle increases, resulting in lateral tipping.

When the vehicle turns, a centrifugal force is generated to the outside. The faster the speed, the smaller the turning radius and the greater the centrifugal force. The resultant force of the centrifugal force is higher than the ground, and the tire friction force that hinders the centrifugal force is on the ground.

The two forces are in parallel positions. The resultant force formed by the two forces plus the gravitational pull of the Earth causes the vehicle to roll outward.

Precautions for vehicle turning.

1. The speed of the vehicle should be slow, and the steering wheel can not be too fast, so as not to cause the car to slide due to excessive centrifugal force, if the car skids, the accelerator pedal should be relaxed immediately, and the steering wheel should be turned to the side of the rear wheel sliding, and then return to the steering wheel to continue driving after the vehicle recovers the straight driving direction;

2. The use of brakes should be avoided as much as possible, especially emergency braking;

3. The steering wheel should be adapted to the curvature of the road, and cooperate with the driving speed, so that the steering angle is appropriate, the steering timing is appropriate, and the direction of rotation is timely;

4. The driver should have a correct estimate of the driving trajectory of the wheels.

The frictional force is required to provide the centripetal force, f=mv 2 r, the vehicle travels at a high speed when turning, and the turning radius is small, which will make the required centripetal force larger, and the friction force cannot be provided, and drifting occurs.

is normal and does not need to be addressed. This is because the vehicle has oneDifferentialsThe function of the differential is to make the rotation speed of the left and right tires different when the vehicle is turning, so as to facilitate the control of the vehicle when turning.

The car differential can make the left and right (or front and rear) driving wheels rotate at different speeds, which is required by each car, and this adjustment of the differential is automatic, which involves the "principle of minimum energy consumption"; The wheels also automatically move towards the lowest energy consumption when cornering, automatically following the turning radius.

Adjust the rotational speed of the left and right wheels.

Scientific principle: when turning, due to the phenomenon of slipping and dragging on the outer wheel, and the phenomenon of slipping on the inner wheel, the two driving wheels will produce the additional force of guessing in the opposite direction at this time, and due to the "principle of minimum energy consumption", it will inevitably lead to the different rotational speed of the two wheels;

Thus destroying the balance of the three and reflecting it on the half-shaft gear, forcing the planetary gear.

Rotation is generated, which slows down the inner half shaft and increases the speed of the outer half shaft, so that the difference in the speed of the two wheels is realized.

The two phenomena that occur during steering are called understeer, and the latter is called oversteering, which is said to be a problem with the steering system. There is also a phenomenon of turning to the Wax direction, which is initially understeering, but in the middle of the process, it becomes oversteering, and it turns sharply to the inside. This is the most dangerous reversal phenomenon and is prone to accidents.

When the car turns, the steering wheel turns into a small turn when the steering wheel turns a big turn, and the steering wheel turns into a big turn when it turns a small turn.

Fault Judgment: True Fault.

Cause analysis: The two phenomena that occur during steering are called understeering, and the latter is called oversteering, indicating that there is a problem with the steering system. There is also a phenomenon of understeering, which is initially understeering, but in the middle of the process, it becomes oversteering, and it turns sharply inward.

This is the most dangerous reversal phenomenon and is prone to accidents.

There is a problem with the positioning of the vehicle.

Common car faults and solutions are as follows:

Black smoke from the exhaust pipe.

Fault Judgment: True Fault.

Cause analysis: The mixed forest qi is too strong and the combustion is incomplete. The main reasons are overload of the automobile engine, insufficient cylinder pressure, low engine temperature, improper adjustment of carburetor, blockage of air filter, individual cylinders not working and ignition too late, etc.

Solution: When eliminating, check whether the choke is fully opened in time, and overhaul if necessary; After the flameout, look at the main nozzle from the carburetor port, if there is oil injection or the cavity is dripping oil, the oil level of the float chamber is too high, and it should be adjusted to the specified range, and the main measuring hole should be tightened or replaced; The air filter is clogged and should be cleaned. Dredging or replacing.

2.The exhaust pipe of the vehicle emits blue smoke.

Fault Judgment: True Fault.

When the travel radius becomes larger, it is called understeer. When the lack of travel radius becomes clumped, it is called oversteer. There is also a phenomenon of seepage, which is initially understeer, but in the middle of the process it becomes oversteer, and it turns sharply inward.

Vehicles should turn left, turn big turns, turn right and turn small turns for traffic safety to avoid collisions with non-motorized vehicles.

Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China

Article 51 Motor vehicles passing through intersections controlled by traffic lights shall pass in accordance with the following provisions:

3) When turning left, turn on the left side of the center point of the intersection. Turn on the turn signal when turning, and turn on the low beam when driving at night;

Article 68 Non-motorized vehicles passing through intersections controlled by traffic lights shall pass in accordance with the following provisions:

3) When turning to the left, turn on the right side of the center point of the intersection;

When the motor vehicle turns right, it will make a small turn, because the turning radius is too large, it will affect the vehicle going straight, and when turning right, without affecting the vehicle going straight, it will enter the rightmost lane after turning, and if it turns to the middle lane or the leftmost lane, then it will affect the vehicles in other lanes.

Disadvantages of turning left to small turns and right to big turns:

1. When turning left and making a small turn, the car will be in the position of intersecting the lane from left to right and the lane from top to bottom at the same time. If there is an accident, it can be said that you are the responsible party, because you should not be in this position when driving, and you occupy the lane in both directions at the same time, it doesn't make sense.

2. When turning left, if you cut too early, then your eyes will look to the left front, but pedestrians and electric vehicles who have crossed the road in front of the left will also look above the oncoming traffic when turning left, so that you will be distracted.

3. When turning left, if the angle and speed are right, the pedestrians or electric vehicles on the zebra crossing will always be behind your A-pillar, and it is easy to be caught off guard when you suddenly see them appear.

4. The right turn should be given to go straight, and at the same time, if the car turning to the right does not avoid the car turning left, it is also the car that turns right is fully responsible, because it is a cross-lane turn when turning to the left, and the danger factor is higher, so it can not be cut too big when turning, and the car that turns straight and left turns must go first, and the small bend should be cut.

5. When turning right, pay attention to the problem of blind spots, the blind spots that appear in the right turn have A-pillar blind spots, B-pillar blind spots and rearview mirror blind spots, if the angle is too large when turning right, then the rearview mirror will often not be able to see clearly the vehicles on the past lane, if you find that the vehicle behind it suddenly disappeared, it may be that it has entered the blind spot, you must pay attention.