Patent application number | Description | Published |
20090032352 | Motor actuated range shift and on demand 4wd - The present invention is a transfer case incorporating the use of a single actuator having an input member selectively engagable to a primary output member, an actuator operatively associated with a clutch assembly and a range selector, a first one-way clutch operably associated with the actuator, and a second one-way clutch operably associated with the actuator. When the actuator is actuated in a first direction, the first one-way clutch will activate the range selector to couple the input member and the primary output member to have either of a direct drive ratio, or a reduced gear ratio. When the actuator is actuated in a second direction, the actuator will actuate the second one-way clutch to engage the clutch assembly, transferring rotational force from the primary output member to a secondary output member. | 02-05-2009 |
20090032755 | PTM self-bleed/failsafe open system for FWD and RWD - A hydraulic system having a solenoid bleed valve for bleeding air out of the system is provided. The present invention is a hydraulic system having an actuator, a coupling operably associated with the actuator, and a first solenoid valve operably associated with the actuator and the coupling, where the first solenoid is operable to control pressure applied to the coupling. The present invention also includes a second solenoid valve operably associated with the actuator and the first solenoid, where the second solenoid is operable to relieve pressure. | 02-05-2009 |
20090288929 | PTM MULTIPLEX HYDRAULIC DIAGRAM WITH TWO POSITION SPOOL VALVE - The present invention relates to a clutch actuation mechanism having a valve, a plurality of couplings in fluid communication with the valve, wherein one of the plurality of couplings is operable to distribute power between a primary set of wheels and a secondary set of wheels, and another of the plurality of couplings is operable to distribute power between each of the secondary set of wheels. The present invention also includes a drive shaft driven by a source of power, which is also connected to the secondary set of wheels, and a pressure supply device in fluid communication with the valve, wherein the valve directs fluid to the plurality of couplings, and when the valve directs fluid to the one of the plurality of couplings operable to distribute power between the primary set and secondary set of wheels, the drive shaft will transfer power to the secondary set of wheels. | 11-26-2009 |
20100122887 | HYDRAULIC CLUTCH ASSEMBLY FOR A MOTOR VEHICLE DRIVELINE - In at least one embodiment, a hydraulic clutch assembly for a motor vehicle driveline is provided. The clutch assembly comprises an input member, and output member and a friction clutch pack operably disposed therebetween for controlling torque transfer. A first fluid circuit contains hydraulic based fluid at a first pressure and is in fluid communication with the friction clutch pack for lubrication thereof. A second fluid circuit is in fluid communication with the first fluid circuit for replenishing the second fluid circuit with the hydraulic based fluid at a second pressure that is less than the first pressure. The clutch assembly further comprises a motor and a gear train. The gear train has an input force driven by the motor and an output force. A first piston is in fluid communication with the second fluid circuit for delivering the hydraulic based fluid thereto and is operatively driven by the output force to displace the hydraulic based fluid. A second piston is translated by the hydraulic based fluid displaced by the first piston to actuate the friction clutch pack. | 05-20-2010 |
20100236888 | LEVER APPLIED SOLENOID CLUTCH ACTUATOR - A electromagnetic clutch assembly for use in a vehicle is presented. More specifically, the clutch assembly comprises an input member; an output member; a friction clutch pack having a first plurality of clutch plates coupled for rotation with said input member and a second plurality of clutch plates interleaved with said first plurality of clutch plates and coupled for rotation with said output member; a solenoid coil; an actuator hub having an armature plate; and a cam lever assembly having a first end engaging said actuator hub and a second end engaging said friction clutch pack. When electrical current is applied to the solenoid coil, the armature plate moves the actuator hub, the actuator hub engages the cam lever and causes said cam lever to compress the interleaved first and second plurality of clutch plates, thereby, resulting in the coupling of the input and output members. | 09-23-2010 |
20100240486 | CONTROLLED DIFFERENTIAL ACTUATOR - A controlled differential actuator particularly adapted for differential applications for motor vehicle powertrains. The differential operator incorporates an electromagnetically applied first or primary clutch coupled to a second multi-disc clutch pack through a ball ramp operator. Energization of the solenoid coil selectively applies the main clutch pack which is coupled to a differential carrier and one of the axle half shafts connected with the differential assembly. Modulation of current applied to the solenoid coil allows a selective frictional coupling between the differential axle half shafts which provides desirable traction features for the associated motor vehicle. | 09-23-2010 |
20100331132 | DCT transmission utilizing a two axis chain - A vehicle dual clutch transmission is provided which includes a first clutch housing driven along a first axis extending generally aligned with the output axis of an engine. A second clutch housing is provided which is chain driven from the first clutch housing and extends along a second generally parallel axis. First and second input shafts are respectively driven by the first and second clutches. An output shaft or shafts is provided that is driven by the input shafts and has selective meshed torsional force transferring gear contact therewith. A differential input gear is driven by the output shaft(s). | 12-30-2010 |
20110167955 | DCT transmission utilizing a two axis chain - A dual clutch transmission for a vehicle is provided. The transmission includes a first input shaft driven by a first clutch and a second input shaft driven by a second clutch. An output shaft or shafts are driven by the input shafts having selective mesh torsional force transferring gear contact therewith. A differential input gear is driven by the output shaft or shafts. At least one of the input shafts has at least one input gear that torsionally engages with the output shaft via an idler shaft having an idler input shaft torsionally connected on the idler shaft with an idler shaft output gear through a one-way clutch and wherein the idler shaft output gear is meshed with another gear on the one input shaft. | 07-14-2011 |
20120216638 | ELECTRIC VEHICLE THREE SPEED DUAL CLUTCH TRANSMISSION - A transmission and components thereof that consists of three forward speed ratios for an electric vehicle market is brought forth. The transmission has an input shaft for receiving torsional energy from an electric motor. A counter shaft is provided which is powered from the input shaft. A first normally closed clutch is provided for powering the first and third gears. A second normally open clutch is provided for powering the second gear. A synchronizer rotatably is provided for selectively torsionally connecting the first of third gears. | 08-30-2012 |
20120247903 | WET CLUTCH MODULE WITH INTEGRATED HEAT EXCHANGER - An arrangement of a dual clutch transmission that incorporates a positive pressure lubrication cooler heat exchanger that is integrated into a cover of a wet clutch module of the transmission is provided. Additionally, a method of assembling a wet dual clutch transmission assembly is provided. | 10-04-2012 |