Semi-active control variable inertia dual mass flywheel based on magnetorheological fluid

Abstract

The invention relates to a magnetorheological fluid-based semi-active control variable inertia dual-mass flywheel, and aims to solve the problems of uncontrollable damping and small adjustable dampingrange of the existing dual-mass flywheel. The magnetorheological fluid-based semi-active control variable inertia dual-mass flywheel comprises a primary flywheel assembly, a secondary flywheel assembly, an excitation device, a damping liquid chamber assembly, a magnetorheological fluid, an inner rotor, two variable inertia discs and two arc-shaped springs; the primary flywheel assembly is supported on each of a second flywheel connecting shaft and the secondary flywheel assembly; the secondary flywheel assembly is matched with the second flywheel connecting shaft; a force transferring plate is in rigid connection with a second flywheel; the two arc-shaped springs are symmetrically mounted in two arc-shaped grooves of the primary flywheel assembly; the inner rotor and the two variable inertia discs are matched with the second flywheel connecting shaft; damping plates are matched with damping clamping grooves in a damping liquid chamber shell to form a plurality of layers of fluid gaps;an upper damping liquid chamber shell is connected with a lower damping liquid chamber shell through shell extending plates at cross sections; and the excitation device is fixed to the outer side ofthe damping liquid chamber shell.

Description

technical field [0001] The invention relates to a transmission vibration reduction and damping part of an automobile, in particular to a semi-active control variable inertia dual-mass flywheel based on magneto-rheological fluid. Background technique [0002] The viscosity and yield stress of magnetorheological fluid can change with the change of the external magnetic field, and this change has the characteristics of fast, reversible and controllable. Under the action of an external magnetic field, it can instantly change from a liquid-like state to a solid-like state, and its viscosity suddenly increases or even loses its fluidity. At this time, it has a certain shear yield stress. As the current in the coil increases, the yield stress of the magneto-rheological fluid increases, and the process responds quickly, is continuous and reversible. The characteristic that magnetorheological fluid can produce magnetorheological effect enables it to be widely used in engineering. Ap...

AI Technical Summary

Problems solved by technology

However, the above-mentioned dual-mass flywheels have defects such as small working gap area, small damping torque, and torsional stiffness that cannot meet the needs of multiple working conditions of the vehicle.

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