Abstract:
A powertrain mount comprises an orifice plate and a track member. The orifice plate has an exit, a first surface sloping toward the exit, and an inner surface. The track member has an outer surface proximate the first surface of the orifice plate, and the outer surface of the track member has an entrance. A containment plate forms an orifice track with the first and inner surfaces of the orifice plate and with the outer surface of the track member.
Abstract:
A powertrain mount comprises an orifice plate and a slug. The orifice plate defines an orifice track having a first cross-sectional area. The slug is disposed in the orifice track, and has a bore with a second cross-sectional area less than the first cross-sectional area.
Abstract:
A powertrain mount comprises an orifice plate including two tracks, a control track and an isolation track. The control track is spirally formed within the orifice plate, which has an exit and entrance on either side of the plate. The control track provides damping to control damping from engine bounce; whereas, the isolation track controllably provides dynamic rate dip. The isolation track is formed between an alignment plate and rotatable track member, each having an exit and entrance, respectively. The rotatable track member and the alignment plate are sealingly engaged and affixed to a decoupler and an annular area disposed about the orifice plate of the powertrain mount. The exit of the alignment plate is adjacent the decoupler. The rotatable track member forms a cavity with the molded body of the powertrain mount, with the entrance exposed to fluid within the cavity for controlling and minimizing vibrations within the powertrain. The isolation track has a track length that may be varied by rotation of the track member and its entrance. Various magnitudes of disturbance frequencies may be managed and controlled by either the fixed control track and/or the variable isolation track within the powertrain mount.
Abstract:
A powertrain mount comprises an orifice plate and a rotatable track member. The orifice plate has an opening, a first surface sloping toward the opening, and an inner surface. The rotatable track member has an outer surface proximate the first surface of the orifice plate, and the outer surface of the rotatable track member has an opening. A compliant member is positioned adjacent the orifice track for isolating and damping amplitudes of vibration frequencies, as an amplitude dependent device. For small amplitudes, the compliant member takes up displaced fluid within the mount; whereas, large amplitudes the compliant member is bottomed out, forcing displaced fluid through the orifice track or into the molded assembly of the mount.
Abstract:
A hydraulic mount provides passive rate dip performance through use of a secondary orifice track-mass resiliently constrained within a first orifice track for reciprocating movement within the first orifice track under conditions such as engine idle, and constrained against reciprocating motion within the first orifice track for conditions imposing large amplitude, low frequency loads on the mount.
Abstract:
A hydraulic mount provides active control through the use of a rotary track assembly connecting a primary pumping chamber of the mount to a secondary fluid chamber. With low amplitude vibrations the fluid path remains open, providing low dynamic stiffness. For high amplitude vibrations, the fluid flow path is closed, providing a high level of dynamic stiffness. The rotary track assembly control is continuously variable offering a wide range of active control of hydraulic mount stiffness.
Abstract:
A method of the present invention is provided for use in an electronic processor controlled vehicular braking system. When integrated into such a braking system, the need for down-stream caliper pressure sensors, and any algorithms associated therewith, is eliminated, the method generating and using estimated caliper pressure, for comparison to command pressure instead of actual caliper pressure, and eliciting far quicker yet accurate response to be estimated caliper pressure in line with command pressure.