Hydraulic torque converter provided with torsion damper and motor vehicle including same

Abstract

The invention relates to a hydraulic torque converter provided with a torsion damper. The hydraulic torque converter comprises a cover, a pump wheel, a worm wheel, a piston plate and at least one torsion damper, wherein the cover is driven by a driving part on an engine side of the motor vehicle; the pump wheel is fixedly connected with the cover rotatably; the worm wheel comprises a worm wheel shell and a blade and outputs a torque to an input shaft of a transmissions of the motor vehicle; the piston plate includes a friction surface and is actuated, such that the hydraulic torque converter is switched between a fluid transmission mode and a mechanical transmission model; in the mechanical transmission model, the friction surface abuts against the cover, such that the cover and the piston plate rotate integrally; the torsion damper is kept between the piston plate and the worm wheel and comprises at least one spring. The piston plate is provided with a first stopping bump formed integrally, the worm wheel shell is provided with a second stopping bump integrally formed, and the first and second stopping bumps are matched with each other to limit a compression amount of the spring. The invention further relates to the motor vehicle including the hydraulic torque converter.

Description

technical field [0001] The present disclosure relates to a torque converter with a torsional damper. In particular, the hydraulic torque converter is provided with integrally formed stop protrusions on the piston disc and the turbine housing, which are used to limit the compression amount of the spring of the torsional vibration absorber. Background technique [0002] Typically, a torque converter is provided between the engine and the transmission of an automatically shifted motor vehicle. The hydraulic torque converter is used to transmit the driving power of the engine to the transmission, which can play the role of torque transmission and torque conversion. A torque converter consists of a cover driven by a drive part on the engine side, a pump wheel connected rotationally fixedly to the cover, and a turbine connected to the transmission input shaft, and is capable of switching between fluid transmission mode and mechanical transmission mode via a piston disc . During...

AI Technical Summary

Problems solved by technology

It can be seen that the types of the two stoppers included in the first and second stopper mechanisms are different and require different processes (for example, the transfer claws need to be welded, the rivets need to be riveted, and the cutouts need to be stamped or machined) to manufacture, thus Make the manufacturing process of the hydraulic torque converter complicated and easy to damage

In addition, it is necessary to arrange additional components such as a retainer plate and an input side plate in the axial direction, which increases the axial size of the torque converter and compresses the space for installing other torque transmission components such as a transmission

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