Coaxial same-end combined type double-clutch transmission device

Abstract

A coaxial same-end combined type double-clutch transmission device is characterized by comprising an input shaft, a first clutch module, a second clutch module, a sleeve transmission shaft, a center transmission shaft, a first countershaft, a second countershaft, a first one-way clutch and a second one-way clutch, wherein the input shaft is a power input shaft, the sleeve transmission shaft is theoutput shaft of the first clutch module, and the center transmission shaft is the output shaft of the second clutch module. According to the scheme, a one-way clutch and friction type clutch combination is applied to a vehicle variable speed transmission system, the friction problem of two clutches of an existing coaxial same-end combined type double-clutch structure in the gear shift process issolved, thus the improved transmission system has the characteristics of a double-clutch transmission, sliding friction of the two clutches can also be avoided effectively in the gear shift process without power failure, on the one hand, use reliability and life of the clutches are promoted, and on the other hand, the overall control difficulty of the vehicle power transmission system is lowered.

Description

technical field [0001] The invention belongs to a vehicle power transmission control system, and in particular relates to a double clutch device which can only transmit power in one direction in the direction of the transmission speed. Background technique [0002] The function of the clutch is to separate or engage the power transmission and is an important part of the vehicle transmission system. At present, there are two types of single clutches and double clutches commonly used in vehicle transmission systems. [0003] The single-clutch structure is relatively simple, and it is generally used in manual shift transmissions. The biggest feature of single-clutch transmissions is that the power must be interrupted during the shifting process. [0004] A dual clutch is a compound device consisting of two clutches. According to the structural arrangement of the two clutches, the existing dual-clutch transmissions mainly include structural types such as the coaxial same-end c...

AI Technical Summary

Problems solved by technology

However, two clutches slipping at the same time will inevitably bring the following problems: one is that the clutches are forced to slip during the gear shift process, which will accelerate the wear of the clutch and affect its service life; Slipping power loss is increased. In addition, two clutches are sliding at the same time. In fact, the two clutches and the corresponding gears are transmitting power at the same time. Since the two gears have different transmission ratios, during the shifting process In a certain period of time, it will inevitably cause the speed of the driven end of one of the clutches to be greater than the speed of the driving end, thus forming a circulating power between the two clutches and the transmission paths corresponding to the two different gears, causing The stress condition of components on the power cycle path deteriorates, resulting in a decrease in the transmission efficiency of the transmission system and a decrease in output torque. Therefore, it is necessary to carry out feedback and coordinated control on the output torque of the engine to compensate for the reduced output torque, so that the The control difficulty of the whole power transmission system is greatly increased

Images