| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 192300300 | With auxiliary source of pressure | 18 |
| 20080245634 | MACHINE UNIT WITH A DRIVE SYSTEM AND A MACHINE - The invention relates to a high output machine unit;
| 10-09-2008 |
| 20090020384 | Hydraulic supply system for torque converter impeller clutch - A hydraulic system for supplying fluid to a torque converter of an automatic transmission for a vehicle driven by a power source includes a torque converter including an impeller, a turbine, and an impeller clutch for alternately engaging and disengaging a drive connection between the impeller and the power source, a hydraulic control system producing line pressure and converter charge pressure that communicates with the impeller clutch, a discharge line communicating with the impeller clutch and through which hydraulic fluid discharges from the torque converter at a discharge pressure similar to the first pressure, thereby minimizing a pressure differential across the impeller clutch tending to disengage the impeller clutch, and an oil cooler to which fluid is supplied from at least one of the source of line pressure and the converter discharge line and from which fluid returns to the control system. | 01-22-2009 |
| 20100038200 | Powertrain with Engine Oil-Fed Torque Converter - A powertrain is provided that has an engine and a torque converter. The engine is configured to provide oil to the torque converter for operation of the torque converter. The engine oil may provide both the fluid coupling and torque converter clutch apply and release functions. | 02-18-2010 |
| 20100193313 | Power transmission device and vehicle having the same - A power transmission device that includes a clutch that transmits power from a motor to an axle; a first pump that is driven by power from the motor to generate and output fluid pressure; a second pump that receives and is driven by a supply of electric power to generate and output fluid pressure; a line pressure generating valve that is operated by operation fluid input to an operation input port, and regulates fluid pressure output from the first pump to generate a line pressure for engaging the clutch; and a switching valve that switches between a first connection state and a second connection state. | 08-05-2010 |
| 20100236887 | HYDRAULIC PRESSURE CONTROL APPARATUS FOR HYDRAULIC POWER TRANSMISSION - A hydraulic pressure control apparatus for a hydraulic power transmission, which includes a pump impeller, a turbine runner, and a multi-plate impeller clutch, the multi-plate impeller clutch configured to engage the pump impeller to a power source by supplying a hydraulic pressure to a hydraulic pressure chamber. The apparatus further includes a control valve for controlling the hydraulic pressure to be supplied to the hydraulic pressure chamber, a fail valve disposed between the hydraulic pressure chamber and the control valve for selectively connecting the hydraulic pressure chamber and the control valve or the hydraulic pressure chamber and a source of a hydraulic pressure, and an electronic control portion controlling operations of the control valve and the fail valve. The hydraulic pressure chamber is connected to the source of the hydraulic pressure when at least one of the control valve, the fail valve, and the electronic control portion fails. | 09-23-2010 |
| 20110011689 | HYDRAULIC PRESSURE CONTROL APPARATUS FOR HYDRAULIC POWER TRANSMITTING DEVICE - A hydraulic pressure control apparatus for a hydraulic power transmission, the hydraulic power transmission including a pump impeller configured to rotate, a turbine runner configured to rotate in response to fluid transmitted from the pump impeller, a lock-up clutch adapted to directly connect the turbine runner to a power source and an impeller clutch adapted to disconnect the pump impeller from the power source, wherein the hydraulic pressure control apparatus includes a switching valve provided at a fluid passage connecting the impeller clutch and a hydraulic pressure source and selectively connecting the impeller clutch to one of the hydraulic pressure source and a first control valve controlling a hydraulic pressure applied to the lock-up clutch. | 01-20-2011 |
| 20110073427 | HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION - A hydraulic control device used in an automatic transmission includes an oil pump, a working pressure regulating portion, a first lubricant supply passage, a lockup switch mechanism, and a second lubricant supply passage. The oil pump is driven in accordance with rotation of a driving source. The working pressure regulating portion regulates a working pressure based on an oil pressure generated by the oil pump. The first lubricant supply passage supplies a back pressure of the working pressure to a lubricant passage. The lockup switch mechanism turns on/off a lockup clutch of the automatic transmission by switching a supply/discharge path of the working pressure to/from a fluid transmission apparatus of the automatic transmission. The second lubricant supply passage supplies the working pressure to the lubricant passage and is disconnected when a lockup clutch of the automatic transmission is turned on by the lockup switch mechanism. | 03-31-2011 |
| 20110094842 | CONTROL APPARATUS FOR LOCKUP CLUTCH - A lockup clutch control apparatus includes a power unit, an automatic transmission, a torque converter, a lockup clutch, an input shaft connected to the power unit, a first output shaft for transmitting the driving force to the automatic transmission; and a second output shaft for transmitting the driving force from the automatic transmission. When a power unit rotation speed or a first output shaft rotation speed becomes equal to, or lower than a first rotation speed, the lockup pressure supplied to the lockup clutch is controlled at a first pressure reduction speed to a target reduced pressure value which is obtained within a range at which the lockup pressure can be controlled. When the lockup pressure becomes the target reduced pressure value, the lockup pressure is reduced at a second pressure reduction speed, which is lower than the first pressure reduction speed, until the lockup clutch starts slipping. | 04-28-2011 |
| 20110147154 | OIL SUPPLY SYSTEM FOR AN AUTOMATIC TRANSMISSION OF A VEHICLE, AN AUTOMATIC TRANSMISSION AND A VEHICLE COMPRISING THE OIL SUPPLY SYSTEM - An oil supply system is provided for an automatic transmission of a vehicle that includes, but is not limited to a valve body and an electric oil pump. The valve body houses a plurality of hydraulic pressure control valves to control main pressure, torque converter and gear shifts of the automatic transmission. The valve body is in flow communication with an oil pan. The electric oil pump is driven by an electric supply and is configured to pump oil into the automatic transmission via the plurality of hydraulic control valves. The electric oil pump is positioned within the valve body or within the oil pan. | 06-23-2011 |
| 20110168509 | HYDRAULIC CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION HAVING A THREE PATH TORQUE CONVERTER CONTROL SUBSYSTEM - A hydraulic control system for a transmission includes a first source of pressurized hydraulic fluid for providing a first flow of hydraulic fluid, a second source of pressurized hydraulic fluid for providing a second flow of hydraulic fluid, and a torque converter control subsystem for controlling a torque converter and a torque converter clutch. The torque converter control subsystem includes a torque converter control valve and a solenoid. The solenoid is multiplexed to the torque converter control valve and the torque converter clutch. The torque converter control valve is operable to control a flow of hydraulic fluid to the torque converter and to other subsystems within the hydraulic control system. | 07-14-2011 |
| 20110192691 | FLUID TRANSMISSION DEVICE - A fluid transmission device includes a pre-damper | 08-11-2011 |
| 20120000740 | HYDRAULIC PRESSURE CONTROL DEVICE - A hydraulic pressure control device including a first oil passage connected to an engagement side oil chamber defined on one side of a piston included in a clutch, an engagement pressure generating valve generating an engagement pressure supplied to the engagement side oil chamber via the first oil passage; a second oil passage connected to a back-pressure side oil chamber defined on the other side of the piston, and a clutch control pressure generating valve generating a clutch control pressure supplied to the back-pressure side oil chamber via the second oil passage and operates to lower the clutch control pressure as hydraulic pressure supplied as a feedback pressure from the back-pressure-side oil chamber side becomes higher. The hydraulic pressure control device controls a differential pressure between the engagement side oil chamber and the back-pressure side oil chamber, and the first oil passage and the second oil passage are communicated with each other via a bypass oil passage having an orifice in a midway position thereof. | 01-05-2012 |
| 20120067685 | POWER TRANSMITTING APPARATUSES - A power transmitting apparatus for a vehicle mounted with a torque converter can be configured to instantly supply sufficient oil to a clutch mechanism on restart of the engine after an idle-stop without an electrically-driven oil pump. A power transmitting apparatus can comprise a torque converter having a torque amplifying function, a clutch mechanism, an oil pump, a clutch control device, an engine control device, and a flow control device. The oil pump can be driven by the driving power of the engine to supply oil to the clutch mechanism and the torque converter to operate them. The flow control device can be configured to limit or prevent the supply of oil to the torque converter by the oil pump and to prioritize the supply of oil to the clutch mechanism when the engine is restarted by the engine control device after the idle-stopped condition. | 03-22-2012 |
| 20120073924 | FLUID PRESSURE CONTROL DEVICE - A fluid pressure control device controls input and output of a fluid pressure to and from a fluid chamber in a device that transfers power from a motor via working fluid in the chamber, the chamber being partitioned into engagement and disengagement oil chambers by a lock-up clutch. A signal pressure output valve performs pressure regulation to output a signal pressure. The control device includes a control valve connected to an output source flow passage leading to an output source of the fluid pressure, and a control unit controlling the signal pressure output valve so the control valve establishes a first state when the lock-up clutch is turned off, establishes a third state when the lock-up clutch is turned on, and establishes a second state so the working fluid can be confined in the disengagement oil chamber when the lock-up clutch is switched on. | 03-29-2012 |
| 20120152678 | TORQUE CONVERTER WITH LOCK-UP CLUTCH - A torque converter for an automatic transmission includes a first fluid flow path for supplying a fluid to a pump cavity, a second fluid flow path for removing the fluid from the pump cavity, and a third fluid flow path for supplying a hydraulic signal to a lock-up clutch. The third fluid flow path is separate and distinct from the first fluid flow path and the second fluid flow path. A sleeve divides a stepped axial bore in the turbine output shaft into an inner stepped axial bore cavity, which is part of the third fluid flow path, and an outer stepped axial bore cavity, which is part of the first fluid flow path. The torque converter further includes an isolator assembly having a twenty degree rotational travel dampening distance. | 06-21-2012 |
| 20120247899 | HYDRAULIC PRESSURE CONTROL DEVICE - A hydraulic pressure controller, which controls hydraulic pressure supplied to a torque converter including a lock-up clutch that is engageable using a hydraulic pressure from a mechanical pump, including a first pressure regulation valve that regulates pressure in a first passage connected to the pump while discharging oil in the first passage to a discharge passage; a bypass passage branched from the first passage bypassing the first pressure regulation valve; a first switching valve selectively switchable between a first state in which the bypass passage and a second passage are connected to each other and a second state in which the discharge passage and the second passage are connected to each other; and a second pressure regulation valve that regulates a hydraulic pressure in the second passage. The first switching valve is switchable into the first state to engage the clutch and into the second state to disengage the clutch. | 10-04-2012 |
| 20130256074 | TURBINE ASSEMBLY HAVING IMPROVED TORQUE CAPACITY - A turbine assembly for a torque converter includes a turbine wheel, including vanes configured to receive fluid flow and cause the turbine wheel to rotate. The turbine assembly further includes a turbine hub coupled to the turbine wheel, wherein the turbine hub is configured to transmit torque from the turbine wheel to an output shaft of the torque converter. The turbine hub and the turbine wheel are coupled to one another via a plurality of fasteners and a plurality of drive pins, such that relative circumferential displacement between the turbine hub and the turbine wheel is prevented. | 10-03-2013 |
| 20130264164 | METHOD OF OPERATING A TORQUE CONVERTER CLUTCH - A method of operating a torque converter clutch in an engine start-stop vehicle improves launch after an auto stop event. During the autostop event, hydraulic fluid is supplied to the torque converter clutch operator through one or more solenoid valves by an auxiliary electric pump. When the prime mover is started at the conclusion of the autostop event, the torque converter clutch is thus locked, assuring rapid and sufficient torque transfer through the torque converter to the transmission and improved acceleration during vehicle launch. As the vehicle accelerates, the hydraulic pressure in the clutch operator is reduced and slip through the clutch increased to achieve a smooth launch and return to conventional torque converter operation. | 10-10-2013 |
