초록 ▼

An automotive suspension system includes means for monitoring bounding and rebounding strokes for producing a stroke indicative signal, and means for detecting frequency of bounding and rebounding strokes based on the stroke indicative signal. The suspension characteristics are hardened when the det

An automotive suspension system includes means for monitoring bounding and rebounding strokes for producing a stroke indicative signal, and means for detecting frequency of bounding and rebounding strokes based on the stroke indicative signal. The suspension characteristics are hardened when the detected frequency is lower than a predetermined stroke frequency threshold for providing higher driving stability. On the other hand, when the detected stroke frequency is higher than or equal to the stroke frequency threshold, the suspension characteristics are switched between harder suspension characteristics and softer suspension characteristics depending upon stroke position for absorbing vibration energy and assuring riding comfort.

대표청구항 ▼

An automotive suspension system comprising: a suspension mechanism disposed between a vehicle body and a suspension member rotatably supporting a road wheel, said suspension mechanism including a shock absorber damping relative movement between said vehicle body and said suspension member, said shoc

An automotive suspension system comprising: a suspension mechanism disposed between a vehicle body and a suspension member rotatably supporting a road wheel, said suspension mechanism including a shock absorber damping relative movement between said vehicle body and said suspension member, said shock absorber being operative in a shock absorbing mode for absorbing vibration energy and a vibration suppressing mode for resisting against relative motion of said vehicle body and said suspension member; a sensor means for monitoring a relative position of said vehicle body and said suspension member for producing a sensor signal representative of a bounding motion stroke and a rebounding motion stroke; a controller receiving said sensor signal for discriminating an input vibration mode between a low frequency mode and a high frequency mode which switches across a redetermined vibration frequency criterion, based on frequency of the bounding and rebounding motion, and deriving a suspension control signal ordering said vibration suppressing mode operation of said shock absorber when said low frequency mode vibration is detected ,and deriving said control signal selectively ordering said shock absorbing mode and said vibration suppressing mode operations depending upon the relative stroke position of said vehicle body and said suspension member in each cycle of vibration such that said vibration suppressing mode is selected when the stroke direction is directed to a neutral position when said high frequency mode is detected.