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8162113 |
Clutch control system for vehicle
A clutch control system for a vehicle includes an actuator which is configured to control a hydraulic pressure. A timer is configured to measure a time period from a timing at which a hydraulic...
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8151965 |
Clutch arrangement
A clutch arrangement having an input element and an output element that are rotatable relevant to one another, a friction clutch and a pump. The friction clutch couples the input element with the...
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8083041 |
Electrohydraulic torque transfer device
A power transmission device includes an actuator having an electric motor driving a pump to supply pressurized fluid to a piston acting on a friction clutch to transfer torque between rotatable...
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8056689 |
Water pump disconnect clutch
A water pump disconnect clutch including: a first race having first and second portions with first and second diameters, respectively; a second race having at least one ramp; at least one rolling...
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8016093 |
Electronically-controlled hydraulically-actuated coupling
A power transmission device includes a rotatable input member, a rotatable output member, a clutch assembly to selectively transfer torque between the input member and the output member, and a...
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7997399 |
Clutch
A clutch includes a driving member and a driven member. The driving member includes a rotatable shaft and four breaking blocks radially fixed to the rotatable shaft. Each breaking block includes a...
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7946401 |
Multi-disk clutch
A multi-disk clutch having a plurality of interengaging disks movable along a longitudinal clutch axis and a resetting device for the mutual release of adjacent disks along a release distance, with...
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7909729 |
Control unit for an electric oil pump
A control unit for an electric oil pump of the present invention includes: a one-way valve that permits circulation of operating fluid from the electric oil pump to the friction engagement device...
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7743899 |
Electrohydraulic torque transfer device and control system
A power transmission device includes a rotatable input member, a rotatable output member, a friction clutch to selectively transfer torque between the input member and the output member, an...
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7708095 |
Control apparatus and method for hybrid vehicle
A control apparatus and method for a hybrid vehicle having a first engagement element between an engine and a motor-generator and a second engagement element between the motor-generator and a drive...
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7686112 |
Apparatus and method for controlling hybrid vehicle
An apparatus for controlling a hybrid vehicle including a first coupling element disposed between an engine and a motor-generator, a second coupling element disposed between the motor-generator and...
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7669393 |
Stall detection system for mower blade clutch engagement
A stall detection system for mower blade clutch engagement determines if there is a stall condition by sensing one or more operating conditions such as engine deceleration or blade spindle...
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7513848 |
Control device for a transmission having a plurality of automatic clutches
A transmission has a first gearshift group, a second gearshift group, and a controller. The controller is configured to perform a method that includes fully coupling the first gearshift group to an...
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7503444 |
Shape memory alloy rotary actuator with capacitive position feedback
An engine mounted fan clutch is disclosed that utilizes an actuator including two shape memory alloy actuation wires to engage and disengage a valve arm and ultimately the fan. The actuator also...
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7475764 |
Device for driving a coolant pump
The invention relates to a device for driving a coolant pump (2) for the coolant circuit of an internal combustion engine in a motor vehicle comprising a drive train that encompasses a drive wheel...
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7455158 |
Viscous fluid coupling device
A viscous fluid coupling device includes: a plate that divides a housing into a reservoir chamber and an operation chamber; communication holes that are provided in the plate and communicate the...
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7445106 |
Electronically-controlled hydraulically-actuated coupling
A power transmission device includes a friction clutch operable to selectively transfer torque between an input member and an output member. An actuator is operable to provide an actuating force to...
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7416068 |
Power take-off clutch control system
Clutch control systems for a power take-off system of a vehicle, such as those employing all-wheel and four-wheel drive systems. The control system calculates the temperature of the clutch system,...
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7415905 |
Vehicular transmissions utilizing slipper ring clutch control
Provided are various vehicular transmission combinations utilizing selectively engageable spiral-type couplings or slipper ring clutches, operable to provide smooth shifting between gear sets, in...
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7318509 |
Temperature compensating hydraulic shear pump
Pump pressure output can be controlled as temperature changes by a temperature compensation element. The present invention provides a shear channel constructed out of two or more materials enabling...
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7311185 |
Method for thermal management for a controllable viscous fan drive
The present invention provides a method of controlling thermal energy within a fan drive. The fan drive includes an input member rotating at an input speed, and an output member attached to the fan...
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7249664 |
Fan drive having pressure control (fluid) of a wet friction fan drive
A hydraulically controlled fan drive system (12) having a method of engagement includes a housing assembly (20) containing a hydraulic fluid (48) and an engaging circuit (36). The engaging circuit...
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7178656 |
Hydraulic controlled fan clutch with integral cooling
A hydraulically controlled fan drive system (12) having a method of engagement includes a housing assembly (20) containing a hydraulic fluid (48) and an engaging circuit (36). The engaging circuit...
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7178651 |
Fast reacting thermal clutch
A thermal clutch assembly is comprised of a radially inner rotatable member, a radially outer rotatable member a pair of axially spaced apart ring structures, and a thin tension web. The ring...
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7077783 |
Method and device for operating a clutch
A method and device for operating a clutch between an internal combustion engine and at least one driven wheel of a vehicle, a torque being transmitted between the internal combustion engine and...
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7044282 |
Clutchless viscous fan drive wherein input member serves as the body and the cover carries seal
A clutchless viscous fan drive system is formed in which the body of the fan drive is attached directly to the input shaft and rotates at full input speed. A seal is pressed into the cover at the...
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7037237 |
Car control apparatus and control method
A car system and control method in which transmission shifting is controlled such that synchronizer damage is avoided. A state discrimination device detects or infers the state of each frictional...
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7007782 |
Control of a hydraulic coupling system
This invention describes a control method for a hydraulic coupling system that includes pressurizing a fluid in an actuator coupled to a multi-disk clutch pack to engage the clutch pack, pumping...
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6994197 |
Clutch element for a unit driven via a drive shaft
A clutch element for a unit is driven via a drive shaft, especially for a water pump. The clutch element comprises a temperature- and/or speed-sensitive clutch member which is rigidly connected...
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6968935 |
Shift element sub-assembly for a transmission
A shift element sub-assembly for a transmission having two axially adjacent shift elements (2, 3) that are located in a transmission housing (1). The discs of both shift elements (2, 3) lie axially...
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6942083 |
Viscous fan clutch actuated by a heating element and ambient air
A fan apparatus is disclosed which includes a fan coupled to a drive mechanism via a viscous clutch. The viscous clutch includes a drive chamber containing a hydraulic fluid with an amount of...
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6814206 |
Temperature-controlled fluid coupling
A temperature-controlled fluid friction coupling is actuated by a flow of viscous fluid flowing into or out of shearing surface gaps disposed therein. An, the actuating pin is movable in a...
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6814681 |
On-demand all-wheel drive system
A drive axle assembly for use in an all-wheel drive vehicle having a first hydraulic coupling operable to automatically transfer drive torque to a secondary driveline in response to slip of the...
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6789654 |
Multiple coupling fan drive
A multiple coupling fan drive provides power to a fan in a cooling system. An input shaft drives a constant viscous coupling and a variable viscous coupling, both of which are operative to drive...
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6769526 |
Apparatus for estimating clutch temperature
The present invention provides an apparatus for estimating clutch temperature estimates clutch temperatures that closely follow actual clutch temperature without a temperature sensor and at low...
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6745885 |
Power distribution control apparatus for four-wheel drive vehicle and a method for controlling the apparatus
A power distribution control apparatus determines a command value that corresponds to the driving state of a four-wheel drive vehicle. The vehicle includes a pair of front wheels and a pair of rear...
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6688446 |
Rear drive module for all-wheel drive vehicle
An automated multi-speed transmission includes an engine clutch operable to establish a releasable drive connection between the engine and an input shaft, an output shaft adapted to transfer power...
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6648115 |
Method for slip power management of a controllable viscous fan drive
A method is disclosed for controlling the slip power of a viscous fluid fan drive clutch, especially of a cooling fan drive for an automotive vehicle. Data is prepared correlating slip power...
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6637565 |
Method for controlling a damper clutch of an automatic transmission
A method for controlling a damper clutch of an automatic transmission that can perform a normal shifting quality by selecting a correction value according to an outside air temperature for direct...
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6619454 |
Thermal disconnect device
A disconnect device is provided in which input and output elements 2 and 4 axially overlap and are drivingly interconnected by balls 14 which extend from a recess the radially innermost element...
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6599102 |
Gas compressor and air conditioning system
Disclosed are a gas compressor and an air conditioning system in which an anomalous temperature rise in an electro-magnetic clutch is detected at an early stage to stop the operation of the gas...
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6578685 |
Active control of a hydra-mechanical traction control device
The hydraulic coupling includes a multi-plate clutch assembly operatively connecting a pair of rotary members, an actuator assembly for actuating the clutch assembly, and a fluid control system...
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6557687 |
Clutch assembly and diagnostic system
A process for achieving engagement of a power source with a high inertia load by use of a clutch provides for the sequential engagement of the clutch until the speed of the power source drops to a...
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6533095 |
Hydraulic coupling with multi-function control device
A hydraulic coupling for use in an all wheel drive system, utilized in association with a front wheel drive transaxle, including a multi-plate clutch assembly operably connecting two relatively...
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6513634 |
Thermal disconnect
A drive disconnect device is provided in which input and output shafts are provided in splined engagement. The splines are aligned with the axes of the input and output shafts such that the force...
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6454070 |
Drain mechanism for hydraulic power transmission joint
A limiter plug and a drain plug are juxtaposed in a valve block. The limiter plug is provided with a thermo-switch of which operation, when a predetermined temperature is reached, opens a...
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6341679 |
Control unit for a torque converter with a lockup mechanism
In a control unit for a torque converter with a lockup mechanism, the surface temperature of a clutch friction material in a lockup clutch is calculated with a surface temperature calculation unit...
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6336538 |
Fluid coupling
A fluid coupling includes an operation plate for defining storage and working chambers in a housing and having a communicating hole for fluid communication between the two, a driven wheel arranged...
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6267212 |
Automatic controlled transmission
The invention concerns an automatic controlled transmission having a hydrodynamic converter (1) and a lock-up clutch (10) between an input shaft (7) and an output shaft (8) of the converter (1)...
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6216841 |
Hydraulic clutch
A hydraulic coupling for use in the drivetrain of an automotive vehicle and responsive to differences in rotation between a rotatively driven casing journaled in a rotary insert in a fixed housing...
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