Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1989-01-19
1990-02-20
Butler, Douglas C.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
248566, 248562, 248636, 248550, 267219, 267 6428, F16F 950
Patent
active
049019864
ABSTRACT:
A hydraulic mount assembly is disclosed having a partition forming two hydraulic chambers and including a damping decoupler. A primary chamber is formed by an elastomeric member and a secondary chamber by a resilient diaphragm. During dynamic loading of the mount, fluid passes through an orifice between the two chambers of the mount causing expansion and contraction of the diaphragm. An expandable, pneumatic bladder is mounted within the primary chamber. A tube provides fluid communication between the bladder and the atmosphere. When a valve in this tube is open, air freely enters and escapes the bladder in symphony with the vibrating mount. Alternatively, the valve may be closed and a positive pressure provided to the bladder from a variable pressure fluid supply. By actively controlling bladder expansion and contraction in this manner, the dynamic rate of the mount assembly may be selectively reduced at relatively high vibration frequencies; that is, those over 20 Hz. Damping may also be reduced to provide a relatively soft mount for engine isolation. Further, by evacuating the bladder, a relatively hard mount may be provided exhibiting relatively high damping and high rate for better engine control. A control circuit with on-board transducers is also provided to monitor vehicle operating and road conditions and modulate the pressure in the bladder for maximum operating efficiency.
REFERENCES:
patent: 4415148 (1983-11-01), Mair et al.
patent: 4588173 (1986-05-01), Gold et al.
patent: 4613118 (1986-09-01), Morita
patent: 4638983 (1987-01-01), Idigkeit et al.
patent: 4648576 (1987-03-01), Matsui
patent: 4650169 (1987-03-01), Eberhard et al.
patent: 4650170 (1987-03-01), Fukushima
patent: 4666016 (1987-05-01), Abe et al.
patent: 4693455 (1987-09-01), Andra
patent: 4700933 (1987-10-01), Chikamori et al.
patent: 4709779 (1987-12-01), Takehara
patent: 4712777 (1987-12-01), Miller
patent: 4720084 (1988-01-01), Hollerweger et al.
patent: 4730584 (1988-03-01), Jordens et al.
patent: 4742998 (1988-05-01), Schubert
patent: 4756513 (1988-07-01), Carlson et al.
patent: 4828234 (1989-05-01), Hoying et al.
patent: 4840358 (1989-06-01), Hoying et al.
Butler Douglas C.
General Motors Corporation
Phillips Ronald L.
LandOfFree
Air bladder controlled hydraulic engine mount does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Air bladder controlled hydraulic engine mount, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air bladder controlled hydraulic engine mount will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1610980