Patent application number | Description | Published |
20090084205 | Vehicle Powertrain Having Live Power Take-Off - A power take-off assembly for transmitting rotary power from the powertrain of a motor vehicle includes a torque converter for an automatic transmission and including an impeller shaft connected driveably to a power source, a housing having a opening through a wall of the housing, and a power takeoff gear secured to the impeller shaft, located in the housing, aligned with the opening, and supported for rotation about an axis. | 04-02-2009 |
20090139815 | Control of Fluid Pressure in a Torque Converter of an Automatic Transmission - A system for controlling hydraulic fluid supplied to a torque converter of an transmission includes a torque converter including a chamber containing an impeller and a turbine, and a bypass clutch having a variable torque capacity, a source of variable control pressure, a latch valve changes in response to the variable control pressure alternately between an unlatched state, wherein the latch valve produces a low pressure output, and a latched state, wherein the latch valve produces a high pressure output, a first valve for limiting hydraulic pressure in the chamber alternately at two magnitudes of pressure in response to the low pressure output and the high pressure output, and a second valve responsive to the variable control pressure for regulating a magnitude of hydraulic pressure that actuates the bypass clutch and changes the torque capacity of the clutch. | 06-04-2009 |
20090143182 | Transfer Case for a Motor Vehicle Powertrain - A motor vehicle powertrain includes a multiple speed transmission including a first lube circuit that supplies hydraulic lubricant to components of the transmission, a first oil sump, and a first pump driveably connected to an engine for supplying oil at a first pressure to the lube circuit, a transfer case including a first output, a second oil sump located in the transfer case, a second pump located in the transfer case and driveably connected to the first output, and a check valve for alternately opening and closing a connection between the first pump and the lube circuit and for opening and closing a connection between the second pump and the lube circuit in response to differential pressure between an outlet of the first pump and an outlet of the second pump. | 06-04-2009 |
20110314939 | TRANSMISSION HAVING A LOW LAUNCH GEAR - A vehicle transmission includes a pinion secured to an input shaft, a gear meshing with the pinion, an idler secured to the gear, a reverse gear meshing with the idler and secured to a second idler, a low gear supported on a layshaft and meshing with the second idler, and a coupler connecting the low gear to the layshaft. | 12-29-2011 |
20110314962 | Transmission Having a Low Launch Gear - Gearing for a vehicle transmission includes meshing forward gears and an idler, a reverse gear engaging the idler, a low gear engaging the reverse gear, a final drive, and a low gear drive path including the idler, the forward, reverse and low gears and the final drive. | 12-29-2011 |
20110319226 | Variable Gain of a Transmission Control Element - A multiple gain producing device includes a control element having variable torque capacity, a source of control pressure, and a spring applying to the control element a first force due to said pressure and a variable second force opposing the control pressure, producing a first gain when control pressure is relatively low, and a second gain greater than the first gain when control pressure is relatively high. | 12-29-2011 |
20120011961 | Auxiliary Oil Pump Integrated with a Vehicle Transmission - An assembly for an automotive vehicle transmission includes a case containing a fluid sump and valve body, a pump supported on the case, a passage formed in the case for carrying fluid from the pump to a transmission control element, and a second passage formed in the case for carrying fluid from the oil sump to the pump. | 01-19-2012 |
20120015770 | Power Transfer Unit Drive Disconnect System - A drive system includes a rotating power source, a planetary differential including a ring gear engaged with the power source, a sun gear secured to a first shaft and a carrier secured to a second shaft, a member secured to an output shaft, and a coupler alternately connecting and disconnecting the member and the ring gear. | 01-19-2012 |
20120079905 | Hydraulic Control for Powershift Transmission - A method for controlling a transmission includes using signals of first solenoids to control first and second clutches, servos of first gears and servos of second gears, using signals of a second solenoid to establish a flow rate to cool the clutches and to actuate the servo that is associated with a selected gear, and using signals of a third solenoid to direct the flow rate to one of the clutches and to engage the selected gear. | 04-05-2012 |
20120216883 | HYDRAULIC CONTROLS FOR AN AUTOMATIC TRANSMISSION - A system for controlling a transmission fluid circuit includes a lube circuit, a source of control pressure, a first valve for engaging and disengaging a control element whose engagement produces desired forward gears, and a control valve, responsive to control pressure, that alternately connects the lube circuit to a sump and disconnects fluid feed to the first valve, and disconnects the lube circuit from the sump and feeds fluid to the first valve. | 08-30-2012 |
20120217119 | Carrying Fluid to Balance Dams in a Servo Piston Support - A hydraulic servo assembly includes a clutch support formed with first and second cylinders, spaced mutually and spaced from a longitudinal axis, first and second balance volumes, and a passage formed in the support for carrying fluid from a fluid source into the balance volumes. | 08-30-2012 |
20120219435 | MOTOR-PUMP ASSEMBLY FOR TRANSMISSION VALVE BODY - A pumping system for an automatic transmission includes a valve body containing transmission fluid having an upper level, a hydraulic pump mounted on a wall of the valve body, and an electric motor driveably connected to the pump. | 08-30-2012 |
20130086798 | ASSEMBLY METHOD FOR HYBRID ELECTRIC TRANSMISSION - A method for assembling a powertrain includes installing transmission gearing and an input shaft in a housing, installing a bearing in a pump housing and securing the pump housing to a pump plate, piloting on the housing the pump plate into position, seating a stator shaft on the pump housing over the input shaft, and installing over the stator shaft a rotor shaft, a rotor hub engaging the bearing and a clutch hub. | 04-11-2013 |
20130086897 | TORSION DAMPER FOR HYBRID ELECTRIC TRANSMISSION - A vehicle powertrain includes an engine, a torsion damper connected to the engine, a torque converter, a housing enclosing a clutch, a motor and gearing, and a drive shell surrounding the torque converter, including an input connected to the damper, an output connected to the clutch, the clutch and the motor located between the torque converter and the gearing, the torsion damper located between the engine and the torque converter. | 04-11-2013 |
20130087225 | HYDRAULIC CIRCUIT FOR HYBRID ELECTRIC TRANSMISSION - A hydraulic circuit for a vehicle powertrain includes a first line for carrying fluid to a torque converter, a second line for carrying fluid from the torque converter, a third line for carrying fluid to a balance dam and an electric motor, and a fourth line for supplying actuating pressure to a clutch, said lines being coaxial. | 04-11-2013 |
20130088105 | SUPPORT FOR A STATOR OF AN ELECTRIC MACHINE FOR A HYBRID ELECTRIC TRANSMISSION - An assembly for supporting a motor of a vehicle powertrain includes a casing covering transmission gearing including an opening and a mounting surface surrounding the opening, a stator secured to the casing, including a reference surface spaced from an axis, and a terminal assembly seated on the mounting surface and secured to the casing, including a terminal electrically connected to the stator through a current conductor. | 04-11-2013 |
20130088109 | MOTOR SUPPORT FOR A HYBRID ELECTRIC TRANSMISSION - An assembly for supporting a motor of a vehicle powertrain includes a housing, a stator secured to the housing, a bearing having a radial position established by the housing, a member contacting the bearing, and a rotor secured to the member and including a radial outer surface spaced radially from the stator by an air gap established by contact between the bearing and the member. | 04-11-2013 |
20130192945 | MODULAR POWERTRAIN COMPONENT FOR HYBRID ELECTRIC VEHICLES - A powertrain module includes an input, first bulkhead supporting the input for rotation, a hub, an electric machine including a stator connected to the first bulkhead and a rotor connected to the hub, a clutch for alternately opening and closing a drive connection between the input and the rotor, and a second bulkhead supporting the input for rotation. | 08-01-2013 |
20130192946 | MODULAR POWERTRAIN COMPONENT FOR HYBRID ELECTRIC VEHICLES - A powertrain module includes an input, a first bulkhead supporting the input for rotation, a hub, an electric machine including a stator connected to the first bulkhead and a rotor connected to the hub, a clutch for alternately opening and closing a drive connection between the input and the rotor, a servo for actuating the clutch and supported on the input, and a second bulkhead supporting the hub for rotation. | 08-01-2013 |
20130192947 | MODULAR POWERTRAIN COMPONENT FOR HYBRID ELECTRIC VEHICLES - A powertrain module includes an input, a bulkhead supporting the input, a rotor support, a torque converter casing driveably connected to the rotor support, an electric machine including a stator supported on the bulkhead and a rotor connected to the rotor support, a clutch hub driveably connected to the input, and a clutch for alternately opening and closing a drive connection between the clutch hub and the rotor support. | 08-01-2013 |
20130192949 | POWERTRAIN HYDRAULIC SYSTEM FOR HYBRID ELECTRIC VEHICLES - A hydraulic system for a vehicle powertrain includes a module including a clutch, an electric machine and a first sump, a transmission including a line pressure source and a second sump, and a pump that supplies fluid from the first sump to the line pressure source when the source of line pressure is unavailable, and supplies fluid from the first sump to the second sump when fluid volume in the second sump is low. | 08-01-2013 |
20140105728 | HYDRAULIC PUMP CONFIGURATION FOR AUTOMATIC TRANSMISSION - An automatic transmission pump assembly includes a torque converter housing and pinion that rotate about a first axis, an idler engaged with the pinion, a gear engaged with the idler, shaft secured to the gear, and a pump rotor secured to the shaft and that rotates about a second axis offset from the first axis. | 04-17-2014 |
20140123807 | PNEUMATIC VENTING OF MODULAR HYBRID ELECTRIC VEHICLE - A system for venting a hybrid electric powertrain includes a module defining a first volume containing a clutch and an electric machine, a housing defining a second volume containing an automatic transmission, and lines producing mutual pneumatic connections among the first volume, the second volume and ambient atmosphere. | 05-08-2014 |
20140124318 | MODULAR HYBRID ELECTRIC VEHICLE ROTOR HUB - A rotor hub includes a sheet metal cylinder including spline teeth including angularly spaced crests and valleys, a tube surrounding the cylinder, secured to the crests and supporting a rotor thereon, a hub secured to the cylinder and supported for rotation, a torque converter, and a flex plate secured to the hub and the torque converter. | 05-08-2014 |
20140124321 | DISCONNECT CLUTCH FOR MODULAR HYBRID ELECTRIC VEHICLE - An assembly includes a shell fixed against axial displacement, a clutch including first plates secured to the shell by a spline, a member fixed against axial displacement, supporting the shell and secured to the shell by the spline, a retainer for limiting axial movement of the first plates and member along the spline, and a piston for forcing the plates along the spline toward the retaine. | 05-08-2014 |
20140128219 | MODULAR POWERTRAIN COMPONENT FOR HYBRID ELECTRIC VEHICLES - An assembly includes a torque converter including a casing supported for rotation about an axis, a rotor hub secured to the torque converter casing for rotation about the axis, a leg member secured to and supporting the rotor hub for rotation about the axis, and an electric machine including a rotor secured to the rotor hub. | 05-08-2014 |
20140144733 | SHIFT-BY-WIRE SYSTEM FOR ACTUATING A VEHICLE PARK BRAKE - A vehicle park-brake system includes a park brake, a solenoid; a first pressure source; a servo for disengaging the park-brake using the first pressure source, and for disengaging the park-brake using a force produced by the solenoid that actuates first and second pistons; and a second pressure source applied to the servo causing hydraulic pressure to vent from the servo, the pistons to detach mutually, and the servo to engage the park brake. | 05-29-2014 |
20140284170 | SHIFT-BY-WIRE ACTUATION OF A TRANSMISSION PARK BRAKE - A transmission park-brake system includes a transmission park brake, a solenoid, first, second and third pressure sources, and a servo valve for disengaging the park-brake using the first and second pressure sources, holding the park-brake disengaged using a force produced by the solenoid and one of the first and second pressure sources, and engaging the park-brake using the third pressure source. | 09-25-2014 |
20150075941 | TRANSMISSION WITH DURABILITY ENHANCEMENT TECHNIQUES - The present disclosure relates to durability enhancement techniques for a dry-clutch vehicle transmission. A cooling system that provides a direct convective cooling path to friction surfaces is disclosed. Also disclosed is a continuously variable clutch wear compensation assembly configured to adjust the position of clutch assembly components on-demand or as needed. | 03-19-2015 |