Double-clutch-type automatic gearbox transmission mechanism

Abstract

The invention relates to a double-clutch-type automatic gearbox transmission mechanism. The double-clutch-type automatic gearbox transmission mechanism comprises an input shaft, a first auxiliary shaft, a second auxiliary shaft, an intermediate shaft, a reverse-gear shaft and an idle gear shaft which are supported through bearings and arranged in parallel; the first auxiliary shaft is sleeved witha five-gear drive gear, a three-gear drive gear and a one-gear drive gear; the second auxiliary shaft is sleeved with a four-gear drive gear, a two-gear drive gear and a reverse-gear gear; a first driven gear, a second driven gear and a third driven gear are fixedly arranged on the intermediate shaft; a reverse-gear drive gear and a reverse-gear driven gear are fixedly arranged on the reverse-gear shaft; and the first driven gear meshes with the five-gear drive gear, the four-gear drive gear and an output idle gear simultaneously, and the second driven gear meshes with the three-gear drive gear, the two-gear drive gear and the reverse-gear drive gear simultaneously. Power is input from an input shaft gear arranged on the input shaft and transmitted and output through the output idle geararranged on the idle gear shaft. According to the transmission mechanism, few gears mesh with one another simultaneously, the NVH performance of a transmission is good, and structural arrangement is good.

Description

technical field [0001] The invention relates to an automobile transmission, in particular to a transmission mechanism of a double-clutch automatic transmission. Background technique [0002] Dual-clutch automatic transmission is a kind of automatic transmission for automobiles. It not only inherits many advantages of manual transmission, but also solves the problem of cutting power and shifting existing in electronically controlled mechanical automatic transmissions. The power and shifting characteristics of the car are good. Fuel consumption and emissions are also reduced, and the economy of the car is also good. At present, the patent with the notification number of CN 101737462A discloses a dual-clutch transmission mechanism, such as image 3 As shown, the driving gear 10 of third gear on the first countershaft 7 in the mechanism, the driving gear 16 of second gear on the second countershaft 13 meshes with the driven gear 21 of second and third gears on the intermediate s...

AI Technical Summary

Problems solved by technology

And the four-speed driving gear 14 will also be directly connected with the gear of the differential as the output gear simultaneously. The fourth and fifth gear driven gears 20 of the shaft are transmitted to the fourth gear driving gear 14, and then transmitted to the gears of the differential through the fourth gear driving gear 14, which will cause the fourth gear driving gear 14 and the supporting bearing of the second countershaft 13 to The wear is accelerated, and the service life of the supporting bearings of the fourth-speed driving gear 14 and the second countershaft 13 is shortened

At the same time, because the reverse gear 17 is arranged at the middle position of the second countershaft 13, since the reverse gear 17 bears a large moment at the middle position of the second countershaft 13, it will cause the second countershaft 13 to bend and deform during reverse gear. A large amount will seriously affect the power transmission of the reverse gear

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