Power Transmission Apparatus for Vehicle

Abstract

A power transmission apparatus for a vehicle includes a power control unit constituted by first and second clutches. An input unit is configured by configuring a number of input gears on first and second input shafts overlapped and disposed on the same axis line without rotary interference so that the rotary power of the engine is input through the power control unit. A shift output unit is constituted by first and second output shafts which are disposed in parallel to the first and second input shafts, respectively. A number of synchronization units synchronization-connect the plurality of transmission gears to the first and second output shafts. A reverse shift unit is constituted by a reverse input gear configured in one input shaft of the first and second input shafts, and a reverse transmission gear disposed on an output shaft and synchronization-connected to output shaft by the synchronization unit.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2016-0132968 filed with the Korean Intellectual Property Office on October 13, 2016, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a power transmission device for a vehicle. Background technique [0004] Environmental technology of vehicles is a core technology affecting the survival of the future automobile industry, and automobile manufacturers have focused all their efforts on developing environmentally friendly vehicles to meet environmental and fuel efficiency regulations. [0005] As examples, future vehicle technologies may include electric vehicles (EVs) using electric energy, hybrid electric vehicles (HEVs), and dual clutch transmissions (DCTs) for improved efficiency and convenience. [0006] In the above description, the DCT related to the present ...

AI Technical Summary

Problems solved by technology

[0010] Meanwhile, as existing transmissions, 6-stage and 7-stage transmissions are mainly used, but in recent years, it is a global trend to realize multiple shift steps (ie, approximately 8 to 10 stages) in order to cope with the increasingly severe The fuel efficiency of the vehicle stipulates, and since the DCT is based on the structure of a manual transmission that independently configures the gear ratio of each gear, even though the efficiency of the DCT is higher than that of an automatic transmission, the entire length and volume of the transmission is due to the multi-stage while increasing

Therefore, DCT has limitations that are problematic in terms of mountability

[0011] In particular, in the case of the front wheel type DCT, since the engine and the transmission are arranged in the frame in the engine room, there is a small limitation in volume, but there is a limitation in the entire length of the upper part

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