Patent application number | Description | Published |
20090205921 | Torque Limiting Shaft Flange Assembly - A vehicle driveline that includes a first driveline component, which has a housing and a first power transmitting member, a second driveline component, which has a second power transmitting member, and a torque-limiting coupling that has a first clutch portion and a second clutch portion. The first clutch portion includes a first body that is removably coupled to the first power transmitting member for rotation therewith. The second clutch portion has a second body that is removably coupled to the second power transmitting member for rotation therewith. The second clutch portion is disposed outside the housing of the first driveline component. The torque-limiting coupling is configured to limit torque transmission between the first and second bodies. Related methods for operating a vehicle driveline and coupling vehicle driveline components are also provided. | 08-20-2009 |
20100029440 | INTEGRATED HYDRAULIC CONTROL SYSTEM FOR AWD VEHICLE - A hydraulic control system for a vehicle includes a brake control unit having a mechanically actuated master cylinder and an electric motor driven pump. The master cylinder and the pump are each adapted to separately provide pressurized fluid to a brake cylinder. A hydraulically actuated drive coupling selectively transfers torque between rotatable input and output shafts. The rotatable output shaft is adapted to drive a vehicle wheel. The hydraulic control unit is in receipt of pressurized fluid from the pump. The hydraulic control unit includes a valve moveable between a first position where the drive coupling is in communication with the pressurized fluid and torque is transferred by the coupling and a second position where the pressure of the fluid in the cavity is reduced to reduce the torque transferred by the coupling. | 02-04-2010 |
20100051407 | Hydraulic Coupling - A torque transfer coupling includes first and second rotary members. A transfer clutch operatively connects the first and second rotary members. A piston, disposed in a piston chamber, is actuable to engage the transfer clutch. A hydraulic pump in fluid communication with a sump containing hydraulic fluid has a first pump member fixed for rotation with the first rotary member and a second pump member fixed for rotation with the second rotary member such that relative rotation between the first and the second pump members generates a fluid pumping action. A first flow path supplies hydraulic fluid from the hydraulic pump to the piston chamber. A second flow path supplies hydraulic fluid from the piston chamber to a control valve for regulating the pressure of the hydraulic fluid supplied to the piston chamber. The second flow path includes an aperture extending through the second pump member. | 03-04-2010 |
20100059315 | HIGH EFFICIENCY LUBRICATION PUMP - A lubrication and shift system for a power transfer device includes an input shaft, an output shaft driven by the input shaft and a lubrication pumping system, including a pump being driven by the input shaft to provide pressurized fluid to a first fluid path. A first pump control system includes a cover plate being moveable to vary the output of the pump. A second pump control system includes a valve member selectively moveable to open and close a second fluid path. The pump output pressure is reduced when the second fluid path is open. A third pump control system includes a torque-limiting coupling limiting a maximum input torque to the pump. | 03-11-2010 |
20100065392 | PUMP ASSEMBLY WITH RADIAL CLUTCH FOR USE IN POWER TRANSMISSION ASSEMBLIES - A power transmission device includes a rotatable shaft having an axis of rotation. A lubrication pump includes an inner rotor and an outer rotor in meshed engagement with one another. A clutch continuously drivingly couples one of the inner rotor and the outer rotor and the shaft to limit the power transferred from the shaft to the lubrication pump. The clutch includes a plurality of circumferentially spaced-apart protrusions biasedly engaged with the shaft. | 03-18-2010 |
20100065393 | Torque Limiting Shaft and Sprocket Assembly - A driveline component with a first drive member, which is rotatable about an axis, a second drive member and a clutch. The second drive member has a hub, which is supported on the first drive member for rotation about the axis, and a transmission portion. The transmission portion, which is configured to engage a flexible power transmitting member, is disposed about the hub and aligned to a transmission axis that is generally perpendicular to the axis. The clutch has a spring and a set of interleaved clutch plates having portions that are coupled for rotation with a respective one of the first drive member and the second drive member. The spring generates a force that is transmitted through the hub such that the clutch plates frictionally engage one another. The location of the transmission portion relative to the transmission axis is unaffected by wearing of the set of clutch plates. | 03-18-2010 |
20100065394 | Torque Limiting Clutch Assembly - A friction clutch comprising a plurality of first clutch plates and a plurality of second clutch plates, wherein at least a portion of each of the first clutch plates is frusto-conical in shape and wherein at last a portion of each of the second clutch plates has a shape that conforms to the at least the portion of the first clutch plates. A method for forming a friction clutch is also provided. | 03-18-2010 |
20110054753 | TORQUE LIMITING CLUTCH WITH ENGINE TORQUE MANAGEMENT FOR THERMAL PROTECTION - A method for controlling slip across a torque limiting clutch includes determining a driveline slip threshold. A cut-off temperature is determined based on at least one of a clutch temperature, a steering wheel input and a vehicle speed. A driveline slip is determined. At least of a spark retardation and a throttle cut-off is initiated when the clutch temperature is greater than the cut-off temperature and the driveline slip is greater than the driveline slip threshold. | 03-03-2011 |
20110290611 | Electromagnetic Actuation System With Force Feedback Control Using Piezoelectric Ring - A torque transfer device for a motor vehicle includes a clutch for transferring torque between first and second shafts. An electromagnetic actuator includes an axially moveable armature for applying an application force to the clutch. An actuator control system includes a force sensor positioned within a clutch actuation force load path and is operable to output a signal indicative of a force applied to the clutch. The control system includes a controller operable to control the electromagnetic actuator to vary the force applied to the clutch based on the force sensor signal. | 12-01-2011 |
20130062154 | TORQUE TRANSFER DEVICE FOR A MOTOR VEHICLE COMPRISING AN ELECTROMAGNETIC ACTUATOR POSITION CONTROL SYSTEM AND METHOD FOR CONTROLLING A RESPECTIVE POSITION CONTROL SYSTEM - A torque transfer device ( | 03-14-2013 |