A semi-active suspension device for an engine

Abstract

The invention discloses a semi-active suspension device of an engine and belongs to the field of automobile parts. The semi-active suspension device is characterized in that an instrument information collecting system (1) is connected with an automobile instrument circuit and is used for collecting automobile tachometer circuit current signals (8), an analog-digital converter converts the current signals (8) into digital signals (9), a single chip microcomputer (3) processes the digital signals (9) and outputs control signals (10), the analog-digital converter (5) converts the control signals (10) into currents, a current amplifier (6) amplifies currents, and amplified currents (11) go through a resistance wire in a viscous damper (7) to cause the temperature in the damper to change so as to change the viscosity of naphthenic oil (16) filled into the viscous damper (7), so that damping force (13) embodied on the suspension device changes. The semi-active suspension device of the engine judges the operation station of the engine according to collected engine rotating speed information so as to output control currents to change suspension damping force to meet the damping requirements on the broadband operating condition.

Description

technical field [0001] The invention relates to a semi-active control system for engine vibration, which belongs to the field of auto parts. Background technique [0002] As one of the biggest sources of vehicle vibration and noise, the engine is also an important factor affecting the working efficiency and service life of the vehicle. Effectively weakening the vibration transmitted from the engine to the body is of great significance for improving the ride comfort, handling stability, driving comfort and service life of the vehicle. [0003] Existing engine mounts include rubber mounts, hydraulic mounts, semi-active mounts and active mounts. [0004] Rubber mount: It occupies the mainstream configuration in the current market due to its simple structure and low cost, but its high-frequency vibration damping effect is poor, and its heat resistance and oil resistance are not good. [0005] Hydraulic mount: The structure is relatively simple, the cost is low, and the vibrati...

AI Technical Summary

Problems solved by technology

[0004] Rubber mount: It occupies the mainstream configuration in the current market due to its simple structure and low cost, but its high-frequency vibration damping effect is poor, and its heat resistance and oil resistance are not good

[0005] Hydraulic mount: The structure is relatively simple, the cost is low, and the vibration isolation effect is obvious in a certain range of frequency bands, but it is easy to be dynamically hardened at high frequencies, and cannot meet the vibration reduction requirements of modern mid-to-high-end cars

[0006] Active mount: the development direction of the engine mount system in the future, but due to the limitations of contemporary technology and processing technology, its cost is high and its reliability needs to be improved

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