Semi-active control hydraulic mount for automotive powertrain

Abstract

The invention discloses a semi-active control hydraulic suspension for an automobile powertrain. The semi-active control hydraulic suspension comprises a suspended shell; an upper liquid chamber communicates with a lower liquid chamber through the inertia channel on an inertia channel body; an air cavity that is a sealed cavity is positioned between a decoupling membrane and the inertia channel; the inertia channel body is provided with an opening communicating with the air cavity; the inner wall of the opening takes the shape of a circular truncated cone; the diameter of the inner wall of the lower end of the opening is more than that of the upper end of the opening; a rubber base membrane is provided with a through hole; one end of the through hole only communicates with the opening while the other end of the through hole communicates with a bottom bowl; a stopper matched with the opening for sealing is arranged in the through hole; and a driving mechanism for controlling the stopper to move axially along the opening is arranged in the bottom bowl. Compared with the prior art, the semi-active control hydraulic suspension for the automobile powertrain has the characteristics of good stability in use, long service life, wide absorbable vibration frequency band, being capable of effectively reducing vibration and noise in an automobile in various driving conditions, and thereby enabling the automobile to be good in comfort.

Description

technical field [0001] The invention belongs to the technical field of hydraulic mounts, in particular to a semi-active control hydraulic mount of an automobile power train. Background technique [0002] At present, people have higher and higher requirements for vehicle ride comfort, so that the traditional passive powertrain mount cannot well meet the requirements of isolating engine vibration. Semi-active control hydraulic mounts can more effectively attenuate the transmission of engine vibration and noise to the interior of the vehicle. Compared with traditional passive mounts, semi-active control hydraulic mounts have very obvious advantages such as: using semi-active control to achieve low , High-frequency vibration isolation The best damping characteristics can effectively isolate the transmission of engine vibration and noise in a wide frequency band, especially the vibration when the engine is idling. The semi-active control hydraulic mount of the automobile powertr...

AI Technical Summary

Problems solved by technology

The solenoid valves of these two patents are all set on the side of the suspension housing, that is to say, the solenoid valves are exposed, and because the environment in the engine compartment is very harsh, not only the temperature is very high, but it is often eroded by sediment, oil, etc., these Factors may cause the solenoid valve to fail, so that the entire suspension component cannot be controlled normally and affect the vibration damping performance of the entire suspension mechanism, so there are problems of poor stability and short service life.

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