Multi-mode semi-active hydraulic suspension

Abstract

The invention discloses a multi-mode semi-active hydraulic suspension which comprises a housing, a rubber main spring, a connecting rod and a rubber bottom membrane, and further comprises a rotating electromagnetic valve, wherein an opening is formed in the top end of the housing; the rubber main spring is arranged in and blocks the opening; the connecting rod penetrates the rubber main spring; the rubber bottom membrane is arranged at the inner bottom of the housing; the housing comprises an upper housing and a lower housing which are connected with each other via bolts; a sealed cavity filled with liquid ethylene glycol is formed between the rubber main spring and the rubber bottom membrane; a partition board dividing the cavity into an upper cavity and a lower cavity is arranged in the cavity; an inertia passage communicated with the upper cavity and the lower cavity is formed in the partition board; a flow block piece is arranged in the inertia passage; the rotating electromagnetic valve is used for driving the flow block piece to rotate. The multi-mode semi-active hydraulic suspension has the advantages that the vibration frequency isolation range can be widened; the vibration isolation effect is improved.

Description

technical field [0001] The invention relates to a vibration isolation device, in particular to a multi-mode semi-active hydraulic mount. Background technique [0002] At present, people have higher and higher requirements for the ride comfort and comfort performance of vehicles, and the engine is one of the main vibration sources of the vehicle, which has a great impact on the vibration of the vehicle body and the noise inside the vehicle. The transmission route is through the powertrain via The suspension device is then transmitted to the frame. As the main component of the engine vibration isolation system, the engine mount's performance directly affects the comfort of the occupants and the working life of the powertrain components. Its performance is mainly reflected in the transmission rate of powertrain vibration to body force. The lower the transmissibility, the better the vibration isolation effect of the mount. [0003] The stiffness and damping of the existing hyd...

AI Technical Summary

Problems solved by technology

[0003] The stiffness and damping of the existing hydraulic mounts are fixed and cannot be changed. They can only achieve a good vibration isolation effect in a certain frequency range. However, the working conditions of the engine are complicated, and each working condition covers a wide frequency range. The existing hydraulic mounts The installation cannot take into account the entire frequency range, so the vibration isolation effect of the suspension is poor under certain working conditions. For example, at low frequencies, large stiffness and large damping are required, and at high frequencies, small stiffness and small damping are required.

does not meet its design requirements well

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