Automotive technology is developing more and more rapidly, and the performance requirements of automotive interior structures and component parts are getting higher and higher. The transmission system is a very important part of the car chassis electronics. It is the source of the entire vehicle's power, whether it can be effectively operated and started. Let us analyze the structure of the automotive transmission system and its achievable functions.
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The automobile transmission system is a general term for all power transmission devices between the automobile engine and the drive wheels. Its most basic function is to transmit between the powers, that is, the power generated by the automobile engine when it is started, and needs to pass through the transmission system. It is converted into the power that drives the movement of the car's wheels, so that the car can get the speed of movement. The structure of the automotive transmission system is mainly composed of the following parts: clutch, transmission, transfer case, universal transmission (including universal joint and transmission shaft) and drive axle (it mainly includes two main reducers and a differential) section).
This paper mainly analyzes the structure classification and structure diagram of the automotive transmission system, and specifically analyzes the role of each part in the system, hoping to help everyone learn and work.
Automotive transmission system structure classification and structure diagram
(1) Mechanical---mainly refers to the transmission that uses mechanical means to transmit power and motion. One is to transmit power and friction transmission by the friction between the parts, and the other is to engage the transmission of the power or movement by the engagement of the active part with the driven part or by the middle piece.
1-clutch 2-transmission 3- universal joint 4-drive bridge 5- differential 6-half shaft 7-main reducer 8-drive shaft
(2) Hydraulic type - a fluid transmission that uses liquid as the working medium to transfer energy using liquid kinetic energy. The body interacts with each impeller mounted on the input shaft, the output shaft, and the casing to generate a change in momentum moment, thereby achieving the purpose of transmitting energy.
1-Hydraulic torque converter 2-automatic transmission 3-universal transmission 4-drive axle 5-main reducer 6-drive shaft
(3) Hydrostatic type---also known as volumetric hydraulic drive system. It is mainly composed of an oil pump, a hydraulic motor and a control device. It is currently only used on certain military vehicles.
1-Clutch 2-Oil Pump 3-Control Valve 4-Hydraulic Motor 5-Driver 6-Tube
(4) Liquid power type - The performance of the electric power train is similar to that of the hydrostatic type, and is currently limited to applications in super heavy vehicles.
Functional Analysis of Various Parts of Automotive Transmission System Structure
(1) Clutch--The clutch is installed between the engine and the transmission and is an assembly directly connected to the engine in the vehicle drive train. It has three major functions: it can make the car start smoothly, shift smoothly and prevent overloading. Commonly used clutches are friction clutches, hydraulic clutches, and electromagnetic clutches.
(2) Transmission - consists of a transmission mechanism and a shifting mechanism, which can be made into a separate shifting mechanism or assembled in the same housing as the transmission mechanism, and can be fixed or split to change the output shaft and input shaft transmission ratio. Its role is mainly manifested in three aspects: to allow the car to achieve variable speed travel and variable distance, reverse control, and interrupted power transmission to stop the car. Commonly used are transmissions, stepless transmissions, and integrated transmitters, all of which have both manual and automatic modes of operation.
(3) Transfer case - A gear train whose input shaft is connected to the second shaft of the transmission directly or through a universal joint. The output shaft is connected to each drive bridge via a universal joint. Its function is mainly reflected in the function of distributing the power output of the transmission to each drive axle and further increasing the torque.
(4) The universal joint transmission device----combined by the universal joint, the transmission shaft and the intermediate support, the segmented drive shaft is also required when the distance is long, and the intermediate support is installed in the middle. When the car is turning or encountering uneven road surface, in order to ensure that the power is still transmitted, a device capable of changing the angle is required to transmit power, and the universal joint device is born. Its main function is to connect the transmission output shaft and the final drive input shaft that are not on the same line, and to ensure reliable transmission of power when the angle and distance between the two shafts are constantly changing. It is similar to the part of the arm that still has the wrist, which can transmit power and realize all the actions of the car.
The chassis electronics of the car is mainly composed of the drive train, the driving system, the steering system and the brake system. The drive train is mainly embodied in the mechanical mechanism. He has some mechanical products to form and realize the function of the car power transmission, although we look at it. To a very bright and beautiful car, there may be no way to imagine the specific structural composition (automobile transmission design). Xiao Bian This article is to simply share the knowledge about the structure of the car transmission system, understand the power source of the car sports, and provide reference and learning materials for the electronic friends who are engaged in the design of the transmission system.
Nowadays, the demand for automobiles in the society is increasing, and the demand for various internal components in the vehicle control system is also increasing. It can be seen that the engineers engaged in the structural design of the automobile transmission system have good development prospects and development space.
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