Question 2: What is the function of the gearbox? The gearbox is a component assembly that transmits the engine power to the transmission shaft (tire), and at the same time realizes the functions of shifting gears and switching forward/backward.
I hope the above answers can help you.
Question 3: What is the function of the transmission? This is a short answer. When the engine speed is fixed, the transmission outputs different speeds, which can control the steering. At low speed, it can output larger torque, and at high speed, it will have better efficiency, but the torque is lower. Therefore, when the machine is started, it should be started at a low speed and switched to a high speed after operation to maintain efficiency.
Question 4: What is the function of automobile transmission? What are the performance requirements? Your question is like walking with legs, and the size of the steps taken by the legs determines the speed of walking. Similarly, the automobile transmission is an indispensable part of the automobile transmission, just like a human leg. The scale density of each gear directly affects its power transmission efficiency to the engine, and also enables the car to achieve different speed driving performance with different gears. As for the performance requirements, it can only be said that the performance of the transmission is based on the power output requirements of the engine combined with it. The higher the performance of the engine, the higher the torque that the gearbox, especially the automatic gearbox, can bear, and the higher the directness of its power transmission, because the power transmitted from the engine will definitely lose power when it is transmitted to the wheels through the gearbox, and the efficiency of the gearbox directly affects the magnitude of this kinetic energy loss. I don't know if you can understand this explanation. I hope it will help you.
Question 5: What is the function of the drive adapter? The main function is to cooperate with the synchronizer ring, so that the rotating speed of two adjacent gears can be synchronized safely from asynchronous under the action of the fork.
Question 6: What are the types of manual transmissions? What are their functions? What are their functions and classifications?
I. Functions of the transmission:
(1), change the transmission ratio: expand the torque and speed range of the driving wheel to adapt to the changing driving conditions, such as starting, accelerating, uphill, etc. So that the engine can work under favorable working conditions.
(2) Under the premise that the rotation direction of the engine remains unchanged, the car can run backwards.
(3) Power transmission is interrupted by neutral, so that the engine can start and idle, which is convenient for the transmission to shift gears or output power.
Second, the composition of the transmission: variable speed transmission mechanism and control mechanism.
The transmission consists of a transmission mechanism and a transmission mechanism, which can be made into a separate transmission mechanism or combined with the transmission mechanism in the same housing. Most of the transmission mechanisms are ordinary gear transmission, and some are planetary gear transmission. Ordinary gear transmission mechanism generally adopts sliding gear and clutch. Sliding gears can be divided into multiple sliding gears and modified sliding gears. Adopt three-stage sliding gear to change speed, with large axial size; The improved sliding gear is used to change speed, which is compact in structure, but the transmission ratio changes little. Clutch can be divided into meshing type and friction type. When using the meshing clutch, the speed change should be carried out when stopping or the speed difference is very small. When the friction clutch is used, the speed can be changed at any speed difference during operation, but the bearing capacity is small and the two shafts cannot be strictly synchronized. In order to overcome this shortcoming, a friction plate is installed on the meshing clutch, and the driven wheel reaches the synchronous speed through the friction plate before meshing. The planetary gear transmission can be controlled by a brake.
Third, the classification of communication:
(1), according to the change mode of transmission ratio: step, stepless and comprehensive.
Step-by-step: Step-by-step transmission is the most widely used. It adopts gear transmission and has several fixed transmission ratios. A. According to the different gear trains used, there are two types: axial fixed (common gear transmission) and axial rotary transmission (planetary gear transmission).
B at present, the transmission ratio of cars and light and medium-sized trucks usually has 3~5 forward gears and 1 reverse gears. C. In heavy vehicles, the combined transmission is adopted, and there are many gears, which are generally composed of two transmissions. ② Stepless type: The transmission ratio of continuously variable transmission can change steplessly within a certain range.
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A. There are two common types: electric type and hydraulic type (hydraulic type).
B. Electric type is also widely used in transmission system, and its variable speed transmission element is DC series motor. The hydraulic transmission component is a hydraulic torque converter.
③ Integrated transmission: Integrated transmission refers to a hydro-mechanical transmission consisting of a hydraulic torque converter and a gear-type stepped transmission. Its transmission ratio can change continuously in several discontinuous ranges between the maximum value and the minimum value, and it is widely used at present.
(2) According to the operation mode, it can be divided into compulsory operation, automatic operation and semi-automatic operation.
1. Because the driver directly controls the gear shift lever, most cars adopt forced operation transmission.
② Transmission ratio selection (shifting) of automatic control transmission is automatic. The driver can only control the speed by manipulating the accelerator pedal.
③ There are two types of semi-automatic control transmissions.
A. One is that several common gears are automatically controlled, and the rest are controlled by the driver;
B. The other is preselection, that is, the driver selects the gear with the button in advance, and when stepping on the clutch pedal or releasing the accelerator pedal, an electromagnetic device or a hydraulic device is connected to shift gears.
(3) According to the usage method, it can be divided into manual transmission (MT), automatic transmission (AT), manual-automatic transmission and stepless transmission.
Question 7: What is a car gearbox and what is its function? The gearbox is to control the transmission ratio of gears and change the speed and power.
Question 8: The function of the transmission! Transmission is one of the most important components in automobile transmission system. Its function is: 1. Change the speed of the car and the torque on the driving wheel of the car in a large range. Because of the different driving conditions, it is required that the driving speed and driving torque of the car can change in a wide range. For example, on the highway, the speed should reach 100km/h, while in the urban area, the speed is often around 50 km/h. When driving empty on a straight road, the driving resistance is very small, and when driving uphill with full load, the driving resistance is very large. The characteristic of automobile engine is that the range of speed change is small, and the range of torque change cannot meet the needs of actual road conditions. 2. In order to drive in the opposite direction, the crankshaft of an automobile engine can generally only rotate in one direction, and the automobile sometimes needs to be able to drive backwards. Therefore, the reverse gear set in the gearbox is often used to realize the reverse driving of the car. 3. Realizing Neutral When the clutch is engaged, the gearbox may not output power. For example, it can ensure that the driver releases the clutch pedal and leaves the driver's seat when the engine is not turned off. The gearbox consists of two parts: variable speed transmission mechanism and variable speed control mechanism. The main function of variable speed transmission mechanism is to change the magnitude and direction of torque and speed; The main function of the control mechanism is to control the transmission mechanism and realize the transformation of transmission ratio, that is, shift gears to realize variable speed and torque. Mechanical gearbox mainly applies the principle of gear reduction. Simply put, there are several groups of gear pairs with different transmission ratios in the gearbox, and the shifting behavior of the car when driving is to make different gear pairs work through the operating mechanism. For example, at low speed, let the gear pair with large transmission ratio work, and at high speed, let the gear pair with small transmission ratio work.
Question 9: What are the main functions of automatic transmission? The transmission has the following functions: ① changing the transmission ratio, expanding the torque and speed range of the driving wheel to adapt to the changing driving conditions, and at the same time making the engine work under favorable (higher power and lower fuel consumption) conditions; (2) unde that condition that the rotation direction of the engine is unchanged, the automobile can run backwards; (3) Power transmission is interrupted by neutral, so that the engine can start and idle, which is convenient for the transmission to shift gears or take power output. The transmission is composed of variable speed transmission mechanism and control mechanism, and a power output can be added if necessary. There are two classification methods: according to the change of transmission ratio and according to the different control methods.