What is Suspension? What are the functions of the suspension? 5

The suspension system refers to the entire support system composed of springs and shock absorbers between the body and the tires. The function of the suspension system should be to support the body and improve the ride feeling, and different suspension settings will make the driver have a different driving experience. The seemingly simple suspension system combines a variety of forces to determine the stability, comfort and safety of the car, and is one of the key components of a modern car.

Suspension is a general term for all force transmission connection devices between the frame of the car and the axle or wheel, its function is to transmit the force and torque acting between the wheel and the frame, and cushion the impact force transmitted to the frame or body by the uneven road surface, and attenuate the vibration caused by it, so as to ensure that the car can run smoothly.

A typical suspension structure consists of elastic elements, a guide mechanism, and shock absorbers, while individual structures also include cushion blocks, lateral stabilizers, etc. Elastic elements are in the form of leaf springs, air springs, coil springs and torsion bar springs, while modern car suspensions mostly use coil springs and torsion bar springs, and individual high-end cars use air springs.

Suspension is an important assembly in the car, which connects the frame and the wheels elastically, which is related to the various performance of the car. From the outside, the sedan suspension is only composed of some rods, barrels and springs, but don't think it's very simple, on the contrary, the sedan suspension is a car assembly that is difficult to meet the perfect requirements, because the suspension must meet the comfort requirements of the car, but also meet the requirements of its handling stability, and these two aspects are opposed to each other. For example, in order to achieve good comfort, it is necessary to greatly cushion the vibration of the car, so that the spring should be designed to be softer, but the soft spring is easy to make the car brake "nod", accelerate "head up" and the bad tendency of left and right roll, which is not conducive to the steering of the car and is easy to lead to unstable car handling.

The suspension system of the car is divided into two kinds: non-independent suspension and independent suspension, the wheels of non-independent suspension are installed at both ends of an integral axle, when one side of the wheel jumps, the other side of the wheel also jumps accordingly, so that the whole body vibrates or tilts; The axle of independent suspension is divided into two sections, and each wheel is independently installed under the frame by coil springs, when one side of the wheel jumps, the other side of the wheel is not affected, and the wheels on both sides can move independently, which improves the stability and comfort of the car.

Due to the increasing requirements of modern people for car ride comfort and handling stability, non-independent suspension systems have been gradually eliminated. The independent suspension system is currently widely used by automobile manufacturers because of its advantages of good wheel contact with the ground, greatly improved ride comfort and handling stability, free movement of the left and right wheels, large degree of freedom between tires and the ground, and better vehicle handling. Common independent suspension systems include multi-link suspension, MacPherson suspension, trailing arm suspension, and more.

The suspension is an elastic element that connects the frame (or body) to the axle and acts as a cushion. The function is to cushion, dampen, and guide.

1. Provide cushioning when the car passes through uneven road surfaces.

2. Ensure that the wheels move within a fixed angle to make the steering stable.

3. Support the weight of the wheels.

4. Maintain good contact between the wheels and the road surface, and ensure that the driving wheels and braking force generated between the wheels and the road surface are transmitted to the car body.

5. Automobile suspension should not only meet the requirements of comfort, but also take into account the requirements of handling stability, and they are often contradictory. The softer the spring, the more comfortable the ride. If the spring is too soft, there will be a phenomenon such as brake nodding and unstable handling.

Therefore, the design has to take the road of moderation, taking into account both aspects.

The suspension is one of the important assemblies in the car, which connects the body and the wheels elastically. The main function of the suspension is to transmit all the forces and moments acting between the wheels and the body, such as the supporting force, braking force and driving force, etc., and to alleviate the impact load transmitted to the body by the uneven road surface, attenuate the vibration caused by it, ensure the comfort of the occupants, and reduce the dynamic load of the cargo and the vehicle itself. The suspension is related to the various uses of the car, and in order to meet these performances, the suspension system must be able to meet the requirements of these performances:

First of all, the suspension system should ensure that the car has a good driving smoothness, for the main purpose of the car, the occupants in the car can not bear the vibration acceleration can not exceed the limit value specified in the national standard. Secondly, the suspension should ensure that the amplitude of the body and wheels in the resonance area is small, and the vibration attenuation is fast. Thirdly, to ensure that the car has good handling stability, on the one hand, the suspension should ensure that when the wheel jumps, the wheel alignment parameters do not change greatly, and on the other hand, the dynamic load of the wheel and the amount of wheel runout should be reduced.

There is also to ensure that the body is stable during braking, cornering, and acceleration, and reduce the pitch and roll of the body. Finally, it is necessary to ensure the reliability of the suspension system, with sufficient stiffness, strength and life. Therefore, the automobile suspension is an important component to ensure the comfort of the ride.

At the same time, the automobile suspension is a force transmission mechanism connecting the frame (or body) and the axle (or wheel), and it is also an important component to ensure the safety of the car. Therefore, automobile suspension is often listed as an important component and compiled into the technical specification table of the car, as one of the indicators to measure the quality of the car.

The automobile suspension includes three parts: elastic elements, shock absorbers and force transmission devices, which play the role of cushioning, vibration damping and force transmission respectively. The elastic element transmits the vertical force forcefully and mitigates the shock and vibration caused by the unevenness of the road surface. From the car, the elastic element mostly refers to the coil spring, which only bears the vertical load, eases and suppresses the impact of the uneven road on the car body, and has the advantages of small space occupation, small mass and no lubrication, but there is no vibration damping because there is no friction itself.

Shock absorber refers to the hydraulic shock absorber, which is to accelerate the attenuation of the vibration of the car body, and it is the most precise and complex mechanical part of the suspension mechanism. The force transmission device refers to the fork-shaped rigid frame, steering knuckle and other elements of the upper and lower swing arms of the frame, which are used to transmit longitudinal force, lateral force and torque, and ensure that the wheels have a definite relative motion law relative to the frame (or body).

There are two functions:1Supporting the weight of the body; 2.It plays the role of shock absorption and cushioning!

The function of the suspension is to transmit the force and torque acting between the wheels and the frame, and to cushion the impact force transmitted from the uneven road to the frame or body, and reduce the vibration caused by it, so as to ensure that the car can run smoothly.

The suspension is generally composed of three parts: elastic elements, guides and damping devices. What it does:

Elastomeric elements are used to absorb and transmit vertical loads and cushion the impact of a car when driving on uneven roads.

The guide device is used to transmit the longitudinal moment, the lateral force and the resulting moment, and ensure that the wheels have a certain movement law relative to the car or the body.

Vibration damping devices are used to quickly attenuate vibrations in the frame and body.

The common task of the three is to transmit power.

When the car is driven on the road surface due to the change of the ground vibration and impact, part of the force of these impacts will be absorbed by the tires, but most of them rely on the suspension device between the tires and the body to absorb.

Modern automotive suspension systems are basically ECAS (Active Full Air Suspension) systems, which are the mainstream suspension systems from Europe. ECAS applies an electronic control system, which greatly improves the performance of the traditional air suspension system, and the car can achieve active adjustment and control under various road surfaces and working conditions, and adds many auxiliary functions.

Photo by Li Shuiqing) @2019

The function of the suspension is to transmit all the forces and moments acting between the wheels and the frame (or body), and to alleviate the impact load of the uneven road on the frame (body), and attenuate the vibration of the bearing system caused by the impact load, so as to ensure the normal driving of the vehicle, ensure that the wheels have ideal motion characteristics when the road surface is uneven and the load changes, and ensure the handling stability of the car so that the car can obtain the ability to drive at high speed.

The functions of the suspension are as follows:

1) The vertical reaction force (supporting force), longitudinal reaction force (traction force and braking force) and lateral force of the road surface acting on the wheels, as well as the torque caused by these reaction forces, are transmitted to the frame (or load-bearing body) to ensure the normal driving of the car.

2) In the case of loading changes, vehicle speed and driving turns, etc., the wheels must be correctly matched with the axis to ensure the stability of the vehicle.

3) Maintain the operability of the vehicle's driving direction, and ensure that the driver can effectively control the steering under various road conditions.

4) Work together with the tires to cushion the vibration from the wheels, so that the vehicle can drive comfortably and smoothly.

Although there are many structural forms of suspension system, shock absorbers, elastic elements and guiding mechanisms are generally used, and buffer blocks are usually provided to control the wheel travel and avoid the interference of the suspension parts with other bodies or frames. (Photo by Zeng Caihong) @2019

The main function of the suspension is to cut the force and torque between the wheels and the body, such as the supporting force, braking force grinding stove and driving force, etc., and to alleviate the impact load transmitted to the body by the uneven road surface, attenuate the vibration caused by it, ensure the comfort of the occupants, and reduce the dynamic load of the cargo and the vehicle itself.

To put it simply, the suspension system refers to the entire support system consisting of springs and shock absorbers between the body and the tires. The function of the suspension system is to support the body and improve the ride feel, because using different suspension settings will make the passenger feel different. Generally speaking, the suspension system of the car is divided into two types: non-independent suspension and independent suspension such as Minming.

The suspension is equivalent to the legs of the car, and the wheels are the feet of the car.

For a fast-moving car, the heavy slag of the suspension can be imagined.

Cars for different purposes have different performance requirements for suspension, and the cost and performance of suspension with different structures are not the same.

The suspension directly determines the performance of the car.

The frame is the general name of all the force transmission connection devices between the car carriage bumper frame (or load-bearing body) and the axle (or wheel) of the car, and its reputation is to transmit the force and force torque acting between the wheel and the frame, and buffer the impact force transmitted to the frame or body by the uneven road surface, and reduce the vibration caused by it, so as to ensure that the car can drive smoothly.

The suspension of the TV allows the TV to be hung on the wall, and other things are also suspended, and it can also be hung up with its things, which is the role of the suspension.

1.The road surface is applied to the vertical reaction force (supporting force) and longitudinal reaction force (traction) on the wheels.

2.In the case of loading changes, vehicle speeds, and driving turns, etc., the wheels must be protected from the axis.

3.Keep the vehicle in the direction of travel.

The main function of the suspension is to control all forces and moments between the wheels and the body, such as support, braking and driving forces, and to mitigate the impact load transmitted to the body by the uneven road nuclear surface, attenuate the vibration caused by it, ensure the comfort of the occupants, and reduce the dynamic load of the cargo and the vehicle itself. The suspension is made up of shock absorbers, elastic elements and guiding mechanisms, in order to control the wheel travel and avoid the suspension parts from interfering with other bodies or frames, generally provided with buffer blocks, in most cars and buses, in order to avoid excessive lateral roll angle when the vehicle is steering, the lateral stabilizer is generally added.

The suspense laughing frame is a general term for all force transmission connection devices between the frame (or load-bearing body) of the car and the axle (or wheel) roller bar, which is used to transmit the force and torque acting between the wheel and the frame, and buffer the impact force transmitted by the uneven road surface to the frame or the body beard, and reduce the vibration caused by it, so as to ensure that the car can drive smoothly.

The suspension spring frame is used to connect the body and the wheels, if the car does not have a suspension, the car can not run normally. Suspension is very important for a car, and suspension is related to the handling and comfort of the car. The car's driving feel also depends on the design of the suspension, the gearing and tuning.

Suspension is a general term for all force transmission connection devices between the frame (or load-bearing body) and the axle (or wheel) of the car, which is used to transmit the force and torque acting between the wheel and the frame, and cushion the impact force transmitted to the frame or body by the uneven road surface, and reduce the vibration caused by it, so as to ensure that the car can run smoothly. Suspension is actually a collective term for all the parts that connect the body to the wheels. It ensures that the body and wheels are in sync with the grip and shield, and at the same time can filter out the ground bumps that the wheels come into contact with, so that they are transmitted to the car as little as possible.

Therefore, the suspension is the key part that determines the comfort and handling of the car. The suspension structure generally includes: springs, shock absorbers have been connected to the wheels and various connecting rods with guiding effects.

The connecting rod is also a variety of things that we commonly call swing arms.

The function of the spring is to absorb the impact from the ground, the role of shock absorption is to absorb the rebound force of the spring, and all the connecting rods and swing arms are used to transmit the force received by the wheel, and can control the swing amplitude of the wheel up and down, left and right, so that the wheel moves according to the established trajectory without deviating from the square direction.