How are chassis classified and what are they?

The automobile chassis is a system that consists of four parts: the drive train, the driving system, the steering system and the brake system.

1. The transmission system structure of the automobile mainly refers to the power transmission device between the engine and the driving wheel, which is composed of clutch, universal rotation device, and drive axle and other parts. The main function of the transmission system is to ensure the necessary traction, vehicle speed, and coordinated changes between vehicle speeds under various conditions of vehicle driving. That is to say, it can ensure that the car can reverse, and the left and right drive wheels can adapt to the differential requirements.

2. The driving system of the car is composed of the frame, wheels, and suspension and other components. Generally speaking, the handling of the vehicle is determined by the driving system of the car. The main function is to make the torque from the drive train become the driving torque of the car through the adhesion between the wheel and the road surface.

And it supports the total mass of the car, which can moderate the impact, reduce the vibration, and ensure the driving stability of the car.

3. The steering system of the car mainly refers to a series of devices used to change or maintain the direction of the car moving or reversing. For example, the steering control mechanism, steering gear, steering transmission mechanism, etc., are all part of the steering system. Its main function is to control the direction of the vehicle according to the driver's wishes, which is very important for the driving safety of the vehicle.

4. The braking system refers to a series of special devices that can generate braking force on the car. For example, brake pads, brake pedals, etc. The main function is to enable the moving car to slow down, stop, and maintain a steady speed when going downhill.

1.Class I chassis: the whole vehicle including all systems;

2.Class II chassis: the engine and transmission have been assembled.

The drivetrain and cab but no car chassis with cargo boxes.

3.Three types of chassis: engine and transmission device, front and rear axle, steering gear, suspension device, wheels and tires, and system are installed without a body.

The power system and other assemblies cannot be driven.

I don't understand this, isn't it just a new head without a body!

There are several types of automobile chassis: automobile chassis can be divided into two types according to the structure, namely load-bearing body and non-load-bearing body. 1. The non-load-bearing body chassis is characterized by longitudinal beams connected to the front and rear, and the whole chassis has high strength and large load, but the comfort is poor.

It is generally used for large vehicles with high requirements for carrying capacity, such as buses, large buses, trucks, etc. There are also a small number of hardcore off-road that emphasize off-road performance will also use non-load-bearing bodies to strengthen chassis rigidity, such as the Jeep Wrangler. 2. The load-bearing body is mostly a cage body, and the design has been strengthened in key parts, such as the front of the car, the parking space, the side of the car, etc.

It is easy to assemble, safe and stable. However, the manufacturing process is complex and costly. At present, the vast majority of cars use load-bearing bodies.

Classification of automobile chassis:

Commonly used automobile special vehicle chassis is divided into two and three categories, as follows:

The second type of chassis refers to the chassis with a cab, which has been tested by the manufacturer, debugged and qualified, issued with a chassis certificate and a product announced by the state.

The second type of chassis is mainly used in automobile modification plants, special vehicles or special vehicles, etc. (it is widely used in oil filling trucks, sprinkler trucks, fecal suction trucks, sewage suction trucks, OEM liquid transport vehicles, stake trucks, trucks, dump trucks, truck cranes, powder material transport vehicles, bulk cement trucks, aerial work vehicles, wreckers, tractors, etc.).

Three types of chassis refers to the chassis without a cab, tested by the manufacturer, debugged and qualified to issue a chassis certificate and have a national announcement of the product socks, three types of chassis are mainly used in bus factories or manufacturers of buses.

The second type of chassis is buried with a cab, no cargo compartment and other chassis, generally 1, the use of grinding and punching the beginning of the vehicle.

The third category is the chassis without a cab, without a body (cargo compartment), etc., and is generally the chassis used by vehicles (buses) at the beginning of 6.

Suspensions have independent suspension and non-independent suspension, and non-independent suspension has torsion beam suspension, integral bridge suspension, leaf spring suspension, etc. Independent suspensions include MacPherson suspension, double wishbone suspension, multi-link suspension, double wishbone suspension, etc. Most family cars or SUVs have a MacPherson independent suspension in the front, which is less expensive and not necessarily comfortable.

Most family cars have a lot of rear suspension, some cars will use double wishbone suspension, and some cars will use multi-link suspension.

Some fairly inexpensive compact family cars or compact SUVs use torsion beam suspension in the rear suspension, which is cheaper and takes up less space. In some sports cars or sports cars, most of the front suspension will use double wishbone independent suspension, and most of the rear suspension will use multi-link independent suspension or double wishbone independent suspension.

The structure, materials, and tuning of the suspension determine the handling and sportiness of the car.

If a car only has good suspension structure and materials, but no good tuning, the handling is also very poor.

The front suspension of the famous Porsche 911 sports car uses MacPherson independent suspension, which can also be used in sports cars after being tuned by Porsche engineers.

Of course, when buying a car, you must not only look at the structure and materials of the suspension, but also need to take a test drive to feel it for yourself, so that you can feel the quality of the car's handling.

What are the four parts of a car chassis.

The function of the automobile bottom macro plate is to support and install the automobile engine and its various components and assemblies to form the overall shape of the automobile and accept the power of the engine, so that the automobile can move and ensure normal driving. So, what are the four parts of a car chassis? Guangzhou Handa Auto Repair Instructions:

The chassis of the automobile is composed of four parts: the drive train, the driving system, the steering system and the brake system. The details are as follows:

1) Drive train.

The power emitted by a car's engine is transmitted by the drive train to the driving wheels, making the car forward or backward. It is composed of clutch, transmission, transmission shaft, intermediate bearing, universal joint, final reducer, differential and half shaft.

2) Driving system.

The driving system receives the power of the drive train, and generates traction and bears the total mass of the car and the reaction force of the ground through the action of the driving wheel and the road surface, so that the car can drive normally. It is composed of the frame, axles, wheels, suspension, etc. of the Qi Nian Jue Lu car.

3) Steering system.

The steering system is to change or maintain the direction of the car under the control of the driver. It is composed of a steering control mechanism, a steering transmission mechanism, a steering wheel and a steering shaft.

4) Brake system.

The braking system ensures that the car can slow down or stop (park) according to the requirements of the driver while driving. It is composed of brake pedal, brake master cylinder booster, sub-cylinder, brake drum and brake pads.

Regarding the classification of automobile chassis, there is no completely unified standard in the world. When it comes to the classification of automobile chassis, it generally refers to the semi-finished products produced by the manufacturer of trucks (i.e. trucks).

The "chassis" of the car is a special term for commercial vehicles (passenger, freight, special), the chassis is composed of frame, suspension (leaf springs, etc.), front and rear axles, engine, gearbox, transmission shaft, braking system, can be driven independently.

The classification of chassis usually follows the definition of FAW's numbering of automobile general drawings (CA CBW-15), which divides cars into four categories. The one-two-three classification of automobile chassis is not a classification of quality, but a classification of automobile manufacturing:

A type of car: that is, the whole vehicle in the usual sense, including all the systems of the car;

Class II car: also known as Class II chassis, refers to a car that only lacks a compartment system assembly, with parts such as driving area and front instrument and operating system, which can be driven;

Class III automobiles: also known as Class III chassis, refers to the engine and transmission device, front and rear axle, steering gear, suspension device, wheels and tires, braking system and other assemblies installed without a body body, and cannot be driven;

Four types of automobiles: only from the perspective of convenient sales, refers to unassembled complete sets of parts including all system parts of the automobile, and are the parts of the entire chassis system of the automobile.

Among them, without a cab, it is called "three types of chassis" for bus factories to modify large and medium-sized buses;

The cab is called "Class II chassis", which is used to modify tank trucks, sprinkler trucks, fecal suction trucks, sewage suction trucks, garbage trucks, wrecker trucks, refrigerated trucks, trucks, dump trucks, truck cranes, training vehicles, fire trucks, semi-trailers, high-pressure cleaning trucks, aerial work vehicles, chemical liquid vehicles, liquefied gas vehicles, bulk cement trucks, cement mixer trucks, semi-trailer tractors, etc.

Its referent is very vague: it can refer to the strength of the body frame; underbody steel plates; engine power; Wheel and suspension structures, etc. In the past, the national control of the chassis was provided by large professional automobile factories, and the after-sales service was also corresponding.

Now some bus factories and modification factories have also begun to assemble their own chassis, and the quality is not as good as the original.

The chassis of an automobile consists of four major systems: transmission system, driving system, steering system and braking system. 1.Introduction to the composition of the transmission systemThe transmission system consists of a clutch, a transmission, a universal joint, a transmission shaft and a drive axle.

2.Introduction to the composition of the driving systemThe driving system consists of a frame, front axle and wheels, rear axle and wheels, front suspension, rear suspension, etc. The driving system is to connect the various assemblies and components of the car into a hail whole, which supports the load of the whole vehicle; It relieves the impact and vibration of the ground to the vehicle, ensures the smooth driving of the car, and works in coordination with the steering system to ensure the stability of the car's handling.

3.Introduction to the composition of the steering systemThe steering system consists of a steering gear, a steering arm, a straight tie rod, a cross tie rod and a steering knuckle. The steering system is to ensure that the car can drive in the direction required by the driver, with mechanical steering, power steering and electronically controlled power base direction.

4.Introduction to the composition of the braking systemThe braking system has pneumatic type, hydraulic type, and gas-liquid integrated type. The pneumatic type is composed of an air compressor, an air reservoir, an air pressure regulator, a brake control valve, a brake pipeline, a brake chamber, a wheel brake, etc.; The hydraulic type is composed of a pulse-type pure brake master cylinder (brake master cylinder), brake wheel cylinder (brake cylinder), vacuum booster, brake line, wheel brake (hub type, disc type), etc.

The chassis is composed of the transmission system, the driving system, the braking system and the steering system, and the chassis combines the general bearing of each component to form the overall shape of the car and provides the role of weighing. The chassis is able to receive power, which allows the car to start moving.

The transmission system of the automobile refers to the system composed of clutch, gearbox, transmission device, etc., the function of these devices is to convert the power of the engine into the car drive, so that the car can drive at different speeds. The driving system of the chassis is composed of frame, wheels and suspension, which can receive the power of the transmission system, and make the car run smoothly while bearing the total weight of the car and the friction of the ground. In the case of uneven road surface and bad road conditions, it can attenuate the vibration of the car.

The braking system is mainly used for the deceleration and parking of the car, and the braking system can keep the vehicle stable when going downhill. The steering system is a system used to change the direction of the vehicle and change the route according to the driver's control.

The chassis is composed of four parts: the drive train, the driving system, the steering system and the brake system

1. The drive train is mainly composed of clutch, transmission, universal joint, transmission shaft and drive axle;

2. The driving system is composed of frame, axle, suspension and wheels, and its basic function is to support the quality of the whole car and ensure the driving of the car; The chassis is composed of four parts: the drive train, the driving system, the steering system and the brake system: 1. The drive train is mainly composed of a clutch, a transmission, a universal joint, a transmission shaft and a drive axle; 2. The driving system is composed of frame, axle, suspension and wheels, and its basic function is to support the quality of the whole car and ensure the driving of the car; 3. The steering system is composed of a steering wheel, a steering gear, a steering knuckle, a knuckle arm, a tie rod, a straight tie rod, etc., and its function is to steer; 4. Braking system: The braking performance of the motor vehicle refers to the efficiency of the vehicle in the shortest possible time.

The function of the chassis is to support and install the automobile engine and its various components and assemblies to form the overall shape of the car, bear the engine power, and ensure normal driving.