What is the composition of an automatic transmission, what is the composition of an automatic transm

Composition of the torque converter:

The common two-stage three-element integrated torque converter is composed of a pump wheel assembly, a turbine assembly, a guide wheel assembly, a locking clutch assembly and a rear cover, and the guide wheel is fixedly connected with the gearbox housing through a one-way clutch. The pump wheel is welded into a whole with the rear cover, which is filled with transmission oil and connected with the engine to play an active role. The turbine is connected to the gearbox input shaft and plays the role of power output.

When the torque converter is working, the pump wheel is driven by the engine to flush the transmission oil into the turbine, thereby driving the turbine to rotate and realizing the transmission of power from the engine to the transmission system. In the guide wheel assembly, if the one-way clutch works, the hydraulic torque converter plays the role of a torque converter, thereby increasing the output of torque; If the one-way clutch does not work (the guide wheel reverses), the torque converter acts as a coupling.

The role of the torque converter:

1. The torque converter can automatically and steplessly change the speed of the turbine according to the load change, so as to improve the passing capacity of the vehicle; 2. The torque converter connects the pump wheel and the turbine through the liquid, which reduces the impact load of the engine on the transmission system and improves the life of the transmission system; 3. When the torque converter starts, it can improve the starting torque ratio of the vehicle, thereby improving the dynamic performance of the vehicle; 4. Start smoothly and softly, improve ride comfort.

Explain the composition of an automatic transmission.

It is composed of oil pump, clutch, brake, and transmission mechanism.

Composition and function of automatic transmission.

The automatic transmission is composed of electronically controlled hydraulic automatic transmission (AT), electronically controlled mechanical automatic transmission (AMT), electronically controlled mechanical continuously variable automatic transmission (CVT), and dual-clutch transmission (DCT).

The automatic transmission consists of electronically controlled hydraulic automatic transmission (AT), electronically controlled mechanical automatic transmission (AMT), electronically controlled mechanical continuously variable automatic transmission (CVT), and dual-clutch transmission (DCT). At the heart of an automatic transmission is automatic gear shifting. The so-called automatic shift means that in the process of driving, the driver controls the accelerator pedal (accelerator pedal) according to the needs of the driving process, and the automatic transmission can automatically shift into different gears according to the engine load and the operating conditions of the car.

The components of an automatic transmission are as follows:

1. Mechanical gear transmission system: most of them are planetary gear mechanisms, and a few are fixed axis gear mechanisms. Generally, automatic transmissions with 4-6 gears need at least 2 sets of planetary gear mechanisms, and automatic transmissions with 7-9 gears need at least 3 sets of planetary gear mechanisms;

2. Hydraulic control system: the hydraulic oil is driven by the oil pump to push various clutches and brakes, so that the transmission automatically changes into various gears;

3. Electronic control system: the sensor measures the vehicle speed, engine load and other parameters and converts them into electrical signals. The electronic control unit (ECU) uses these signals to determine whether a gear shift is required.

Photo by Pacific Automobile Network Q&A).

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The automatic transmission is composed of: hydraulic torque converter, mechanical transmission, shift actuator, hydraulic control system, and electronic control system. The role of the gearbox is:

1. Change the transmission ratio to meet the needs of traction under different driving conditions; 2. Realize reversing driving; 3. Interrupt the power transmission to the drive wheels when the engine starts, idles, shifts the car or needs to stop for power output. <>

The automatic transmission is mainly composed of a hydraulic torque converter, a planetary gear transmission mechanism, a hydraulic control system, and an oil filtration device. An automatic transmission, also known as an automatic transmission, is generally a type of automobile transmission that can automatically change the gear ratio while the vehicle is moving, so that the driver does not have to manually change gears, and is also used in large equipment railway locomotives.

1. Hydraulic torque converter: Hydraulic torque converter is a non-rigid torque converter with liquid as the working medium, which is one of the forms of hydraulic transmission. Torque converter, which has a closed working chamber, in which the liquid circulates and flows, in which the pump wheel, turbine and guide wheel are connected to the input shaft, output shaft and housing respectively.

When the power engine (internal combustion engine, electric motor, etc.) drives the input shaft to rotate, the liquid flows out of the centrifugal pump in turn, passes through the turbine, the guide wheel and then returns to the pump wheel, and circulates repeatedly. The pump wheel transfers the mechanical energy from the input shaft to the liquid. The high-speed liquid pushes the turbine to rotate, transferring energy to the output shaft.

Turn left|Turn right.

2. Planetary gear transmission structure: The planetary gear mechanism is composed of sun gear, planetary gear, planetary carrier and gear ring.

3. Hydraulic control system: The hydraulic control system is based on the power provided by the motor, and the hydraulic pump is used to convert the mechanical energy into pressure and push the hydraulic oil. By controlling various valves, the flow direction of hydraulic oil is changed, so as to promote the hydraulic cylinder to make different strokes and different directions, and complete the different actions of various equipment.

4. Oil filter pre-dust device: The oil purifier is a filtration device that uses gravity, centrifugation, pressure, vacuum distillation, mass transfer and other technical methods to remove mechanical impurities, oxidation by-products and moisture in impure oil. Oil purifiers are mainly used to improve the cleanliness of machinery and electrical oils, so that they can perform at their best and extend the service life of equipment.

Photo by Chen Fang1) @2019

The automatic transmission is mainly composed of a hydraulic torque converter, a planetary gear transmission mechanism, a hydraulic control system and an oil filter. An automatic transmission is also called an automatic transmission. In general, it is a car transmission that automatically changes the gear ratio while the vehicle is moving, so that the driver does not have to manually shift gears.

It is also used for large equipment of railway locomotives.

1.Hydraulic torque converter: Hydraulic torque converter is a non-rigid torque converter with liquid as the working medium, which is one of the forms of hydraulic transmission.

The torque converter has a closed working chamber in which the liquid circulates and the pump wheel, turbine and guide wheel are connected to the input shaft, output shaft and housing, respectively.

When the power engine (internal combustion engine, electric motor, etc.) The input shaft is driven to rotate, and the liquid flows out of the centrifugal pump impeller, passes through the turbine and the guide wheel in turn, and then returns to the pump wheel, and the circulating dust circulates and moves. The pump wheel transfers the mechanical energy from the input shaft to the liquid.

The high-speed liquid drives the turbine to rotate, transferring energy to the output shaft. Turn left|Turn right.

2.Planetary gear transmission mechanism: The planetary gear mechanism is composed of sun gear, planetary gear, planetary carrier and ring gear.

3.Hydraulic control system: The hydraulic control system is based on the power provided by the motor, and uses the hydraulic pump to convert the mechanical energy into pressure and push the hydraulic oil.

By controlling various valves, the flow direction of hydraulic oil is changed, and the hydraulic cylinder is pushed to do different strokes and different directions to meet the different action needs of various equipment.

4.Oil filter mumulator: The oil filter is a filtration device that removes mechanical impurities, oxidation by-products and moisture from collapsing-resistant pure oil through gravity, centrifugation, pressurization, vacuum air distillation, mass transfer and other technical methods.

Oil filters are mainly used to improve the cleanliness of mechanical and electrical oils, so that they can exert their best performance and prolong the service life of equipment.

Millions of car purchase subsidies.

The automatic transmission consists of five main parts. The following is a detailed introduction to the composition of automatic transmission: 1. The common components are torque converter, planetary gear mechanism, clutch, brake, oil pump, filter, pipeline, control valve body, speed regulator, etc.

2. According to the functions of these components, they can be divided into five parts: torque converter, variable gear mechanism, oil supply system, automatic shift control system and shift control mechanism. 3. The torque converter is located at the front end of the automatic transmission and is installed on the flywheel of the engine, and its function is similar to that of the clutch in the car with manual transmission. It uses the change of kinetic energy in the process of oil circulation to transmit the power of the engine to the input shaft of the automatic transmission, and can automatically and steplessly change the transmission ratio and torque ratio within a certain range according to the change of the driving resistance of the car, and has a certain deceleration and torque increase function.

4. There are two types of transmission gear mechanism in automatic transmission: ordinary gear type and planetary gear type. The transmission adopts ordinary gears, and due to its large size, the maximum transmission ratio is small, and only a few models use it. At present, the gear transmission in the vast majority of car automatic transmissions adopts the planetary gear type.

The automatic transmission is mainly composed of a hydraulic torque converter, a planetary gear transmission mechanism, a hydraulic control system, an electronic control system and a cooling and oil filtering device.

Torque converterThe torque converter is mounted on the flywheel of the engine. Its function is to transmit the power of the engine to the planetary gear transmission mechanism, and has a certain variable torque function.

Planetary gear shift mechanismThe planetary gear shift mechanism consists of two parts: the planetary gear mechanism and the shift actuator. The planetary gear mechanism consists of 2 3 rows of planetary gears with a transmission ratio of 2 5; The shift actuator realizes the change of the transmission ratio, that is, automatic shifting.

Hydraulic Control SystemThe main task of the hydraulic control system is to supply the required oil pressure to the various systems of the automatic transmission according to the changes in engine load and vehicle speed. According to the position of the joystick and the driving status of the car, the hydraulic channel is switched to realize the control of the torque converter and gear transmission system. Controls the working state of the torque converter lock-up clutch.

Electronic control systemIn the electronic control system, sensors collect various signals, such as throttle position, vehicle speed, water temperature, etc. , and convert them into electrical signals and send them to the electronic control unit. The electronic control unit compares the data with the set shift rules and sends commands to the solenoid valve to determine the correct shift timing and gear.

Cooling, oil filter cooling, the oil filter consists of a filter, a cooler, and a pipe. Its function is to cool the transmission oil through the cooling oil circuit and cooler, maintain the normal operating temperature, and improve the efficiency of the transmission. At the same time, the filter filters out metal wear debris from the transmission fluid to keep the transmission fluid clean.