Transmission structure Detailed of the constant mesh transmission

Car engine as a source of power, torque and speed range is smaller, while the cars requires the driving force and speed in a fairly large range of changes, while to resolve this contradiction, the development of motor vehicles in the automotive the power transmission system, this part of the transmission. At the moment, the car's transmission is probably divided into two types, namely the level and stepless type. Stage the transmission gears in different forms and can be divided into constant mesh gear transmission (the axis of the fixed transmission) and the planetary gear transmission (the axis of rotation gearbox). Seemingly complex term, in fact suit the common transmission becomes becomes simple, constant mesh gear transmission can be understood as a traditional manual transmission and dual clutch transmission. The planetary gear transmission can be understood as a normal automatic transmission. This article introduces the constant mesh variable speed.The mating-type transmission is often called the axis of the fixed transmission gear is fixed on the top of a fixed axis, and the common transverse gearbox along two axes (excluding reverse axis), this two-axis, respectively, connected engine and year-end banquet. Connect the engine shaft is called the input shaft, by definition is the engine power and the introduction of the transmission shaft, and the other called the output shaft is connected with the year-end banquet axis, it can be the power output to the year-end banquet and then passed to the wheels. The longitudinal gearbox with a transverse gearbox there will be little difference in addition to the input, output shaft, it also has third axis, the root called the intermediate shaft. The reason to join this axis, mainly because of the longitudinal transmission it will be the input shaft and output shaft design along the same line, and so unable to shift, so will the input shaft input power transfer to the intermediate shaft, and then from the middle axis passed to the output shaft, so that we can achieve shift. Input and output shaft design as a straight line, the twist due to excessive torque can avoid transmission gearbox housing.The role of transmission by definition, is used to speed, how it can achieve variable speed? Is actually very simple, regardless of what form of transmission, it is used to change the transmission ratio to achieve the variable speed, the difference between them just change the transmission ratio in the form above. Often the mating-type transmission changes the transmission ratio is the use of a fixed number of teeth of the gear installed on the input and output shaft combination of methods to achieve. Transmission set, the number of stalls will have a number of the gear. Speaking of transmissions, of course, also explain about the transmission ratio of the mass, transmission than the most simple, most general, is the ratio of the two gear teeth, for example, the input shaft A gear 38, while the output shaft gear B 11, then A: B is equivalent to 38:11 = 3.45. The transmission ratio of the sum is 1, then it is a constant velocity profile, the engine output torque of 1:1 pass out. The transmission ratio is greater than 1, the engine output torque is magnified, but the output speed will be reduced. Conversely, if the transmission ratio of less than 1, then the engine output torque will be reduced, but the output speed will improve. For example, like a block with the highest gear of the gearbox, a gear transmission ratio is the biggest, so it can zoom in the engine output torque, output speed of a file is lower. The highest gear, the transmission ratio is usually less than 1, so it will reduce the engine output torque, but it can produce a higher speed. Summary of a rule is "slow increasing twist, the growth rate of less twisted.