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| Number | Title | Issue Date |
| 7993231 | Hydraulic control device for automatic transmission A hydraulic control device for an automatic transmission includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a preliminary shift speed switching valve, and a hydraulic pressure supply switching valve. A second friction engagement elemen... | 08/09/2011 |
| 7621837 | Hydraulic control apparatus for an automatic transmission A hydraulic control apparatus for an automatic transmission is provided with a solenoid valve that outputs a signal pressure during a failure and does not output a signal pressure during normal operation and a first clutch apply relay valve that switches between a n... | 11/24/2009 |
| 7578761 | Hydraulic circuit control device A hydraulic circuit control device that selectively supplies oil to a first oil passage and a second oil passage by an oil pump, the control device includes: an oil passage switching unit adapted to connect the oil pump to either the first oil passage or the second ... | 08/25/2009 |
| 7559866 | Hydraulic control apparatus for automatic transmission A hydraulic control apparatus for an automatic transmission which supplies a controlled hydraulic pressure to a engagement element includes a control valve unit including a line pressure input port, an output port for outputting the controlled hydraulic pressure, a ... | 07/14/2009 |
| 7485062 | Hydraulic control system with variably regulated line pressure A hydraulic control system for an automatic transmission includes a planetary gear system having a plurality of clutch elements that alters the torque ratio of the transmission. The hydraulic control system includes a line pressure control device for regulating a va... | 02/03/2009 |
| 7438660 | Pressure regulator valve with boost feature A pressure regulator valve is provided having a valve spool slidably disposed within a stepped bore defined by a valve body. A first pressure responsive surface area is defined on the valve spool and is subject to pressurized fluid from a main pressure source. A sec... | 10/21/2008 |
| 7410438 | Switching-valve arrangement for a shifting system of an automatic transmission The invention relates to a switching-valve arrangement for a shifting system of an automatic transmission having a first actuator for engaging and releasing gears, at least a second actuator for engaging and releasing gears, a first activatable switching valve, a se... | 08/12/2008 |
| 7396306 | Multiplexed control system and method for an electrically variable hybrid transmission A powertrain has an electrically variable hybrid transmission having an electro-hydraulic control system, plurality of electrical power units, and a plurality of torque transmitting mechanisms selectively engageable by the electro-hydraulic control system to provide... | 07/08/2008 |
| 7384358 | Automatic transmission control apparatus Each corresponding one of a plurality of friction arrangements, which is driven in an engaging direction to achieve engagement at time of next gear shift to transmit torque, is selected as a standby friction arrangement that is placed in a standby state for implemen... | 06/10/2008 |
| 7357752 | Power train system having creeper module A power train assembly is driveably engaged with an input source and includes a transmission module having a casing and a drive member. The transmission module is driveably connected to the input source and a creeper module is driveably engaged with the drive member... | 04/15/2008 |
| 7351176 | Line-to-lube pressure regulator valve assembly A line-to-lube pressure regulator valve assembly for an automatic transmission including an internal check valve that opens in the Park gear range and at low engine speeds to feed line pressure to the torque converter in response to a substantially lower hydraulic f... | 04/01/2008 |
| 7351175 | Drive train for a motor vehicle A drive train for a motor vehicle includes a coupling device between a drive unit and a transmission for torque or moment transfer between the drive unit and the transmission. The coupling device has at least one coupling arrangement that can be activated by a press... | 04/01/2008 |
| 7349784 | Control method for automobile transmissions A control method for automatic transmissions wherein a reverse motion condition in the neutral or drive ranges, caused by burning or the like in the operating devices of the automatic transmission, can be automatically detected to prevent an unwanted reverse motion ... | 03/25/2008 |
| 7338407 | Reduced engine load at stop apparatus and method Provided is an apparatus to enable a torque transmitting mechanism within an automatically shiftable power transmission to disengage at vehicle stop such that the slip within a fluid drive device is reduced. When vehicle movement is required a main pressure regulato... | 03/04/2008 |
| 7338402 | Device for controlling an automatic transmission A device for the hydraulic control of an automatic transmission, especially a continuously variable automatic transmission. The control system comprises a forward/reverse drive unit (4), which is controlled by way of at least a first and a second shifting com... | 03/04/2008 |
| 7331893 | Methods and systems for improving the operation of transmissions for motor vehicles Methods and systems for improving the operation of a transmission for an automotive vehicle are provided for modifiying the original hydraulic circuits to increase the capacity or holding ability of the low and reverse clutches when the transmission is shifted into ... | 02/19/2008 |
| 7325885 | Regulator valve for a torque-transmitting mechanism and method of engaging a torque-transmitting mechanism A regulator valve for controlling the pressure of fluid engaging a torque-transmitting mechanism in a transmission includes a valve body forming a valve bore of a plurality of passages. A spool valve slides within the valve body. A check valve selectively opens and ... | 02/05/2008 |
| 7314423 | Hydraulic control system of 6-speed automatic transmission for vehicle A hydraulic control system of a six-speed automatic transmission provides an enhanced overall performance by achieving precise and effective control by providing a fail-safe function in at least two ways. ... | 01/01/2008 |
| 7306543 | Automatic transmission controller An automatic transmission controller has an electronic control circuit, an electromagnetic valve, and a pressure control valve. The electronic control circuit generates a control current. The electromagnetic valve regulates a command pressure in accordance with the ... | 12/11/2007 |
| 7288039 | Multiplexed pressure switch system for an electrically variable hybrid transmission A powertrain has an electrically variable hybrid transmission having an electro-hydraulic control system, plurality of electrical power units, and a plurality of torque transmitting mechanisms selectively engageable by the electro-hydraulic control system to provide... | 10/30/2007 |
| 7285066 | Multiplexed trim valve system for an electrically variable hybrid transmission A powertrain has an electrically variable hybrid transmission having an electro-hydraulic control system, plurality of electrical power units, and a plurality of torque transmitting mechanisms selectively engageable by the electro-hydraulic control system to provide... | 10/23/2007 |
| 7282005 | Hydraulic control apparatus of automatic transmission A hydraulic control apparatus of an automatic transmission. The hydraulic control apparatus of the automatic transmission has a hydraulic servo for controlling an engaging state of a clutch C-1 on the basis of supplied oil pressure, a linear solenoid valve fo... | 10/16/2007 |
| 7282012 | Electronic adaptive swap-shift control for an automatic transmission for automotive vehicles A control system and control method for a swap-shift transmission having auxiliary and main gearsets wherein precise synchronization control of ratio changes of each gearset at the start and at the end of a swap-upshift progression is achieved using an adaptive cont... | 10/16/2007 |
| 7278953 | Transmission shift control method A method is provided for shifting a powershift transmission in a vehicle having an electronic engine control unit and an electronic transmission control unit. The method rapidly reduces off-going clutch pressure to a pressure which is slightly higher than a Predicte... | 10/09/2007 |
| 7261662 | Hydraulic control apparatus for automatic transmission of vehicle A hydraulic control apparatus for use with a vehicle's automatic transmission, the apparatus including a fail-safe switch valve which has an escape-related output port connected to a drain port of a transmission-related solenoid valve corresponding to an escape-rela... | 08/28/2007 |
| 7258640 | Apparatus for compensating viscous characteristics of hydraulic fluid in a hydraulic pressure line An apparatus for compensating the viscous characteristics of a hydraulic medium in a pressure line (10) in which apparatus a pressure nozzle (12) with constant geometry and constant through-flow cross-section is located in the pressure line (10)... | 08/21/2007 |
| 7247126 | Method and apparatus for shift control of an automatic transmission Whenever a 4 to 3 shift condition is satisfied during a 3 to 4 upshift, 4 to 3 shifting is started before the 3 to 4 shifting is finished. The 4 to 3 shifting is executed according to a predetermined hydraulic control pattern. Therefore, responsiveness in shifting i... | 07/24/2007 |
| 7198587 | Transmission with selectable braking one-way clutch A multi-speed transmission is provided with a selectable (reversible) braking one-way clutch operative to brake rotation of a member of a planetary gear set of the transmission when the transmission is in reverse and first speed. First and second rotating input clut... | 04/03/2007 |
| 7175556 | Hydraulic control apparatus for automatic transmission A hydraulic control apparatus for an automatic transmission includes a first SL linear solenoid, a second SL linear solenoid, a third SL linear solenoid, and a fourth SL linear solenoid, which are normal closed type, and a sequence valve. The sequence valve connects... | 02/13/2007 |
| 7163481 | Driving force transmitting system A manual valve is provided between a mechanical oil pump and a clutch of an automatic transmission device for connecting an engine with the automatic transmission device, a first check valve is provided in a passage connecting the mechanical oil pump with the manual... | 01/16/2007 |
| 7112156 | Transmission with miniature motor for control to oil flow A transmission includes a plurality of fluid passages configured to transmit fluid through the transmission for operating the transmission. A miniature electric motor is operatively connected to a moveable blocker positioned in one of the passages for actuating move... | 09/26/2006 |
| 7108632 | Control apparatus of automatic transmission An automatic transmission including plural friction engaging elements configures plural shift ranges based on combinations of each friction engaging element being in engaging or disengaging condition and a controlling unit for controlling the friction engaging eleme... | 09/19/2006 |
| 7104273 | Torque converter clutch regulator valve assembly and method of installation A replacement torque converter clutch regulator valve assembly for use within an automatic transmission including two cooperating valves, namely a regulator apply valve and an isolator valve, disposed in fluid communication with a line pressure circuit and a torque ... | 09/12/2006 |
| 7104911 | Hydraulic control device for automatic transmission A hydraulic control device for an automatic transmission comprises an engagement element pressure control section for controlling an engagement element pressure, engagement elements supplied with the engagement element pressure, and an oil pressure switches provided... | 09/12/2006 |
| 7104910 | Hydraulic control apparatus for hydraulically operated mechanical apparatus A hydraulic control apparatus for switching an operation of a hydraulically operated mechanical apparatus, by selectively operating two frictional engagement elements of a first, a second, a third, and a fifth frictional engagement elements, the hydraulic control ap... | 09/12/2006 |
| 7090614 | Automatic transmission and method for determining hydraulic pressure characteristics value for automatic transmission An automatic transmission includes a plurality of frictional engagement elements for constructing plural shift stages with combinations of engagement and disengagement thereof, a control portion for controlling the engagement and the disengagement of the frictional ... | 08/15/2006 |
| 7048104 | Selective bypass of solenoid-controlled supply to friction elements of an automatic transmission A hydraulic system for controlling the engagement and disengagement of a friction element includes a source of line pressure, a source of exhaust pressure, a manual valve having a forward state and a reverse state, connected to the exhaust pressure source and line p... | 05/23/2006 |
| 7025706 | Shift hydraulic apparatus for vehicular automatic transmission A shift hydraulic apparatus and method are provided for a vehicular automatic transmission constituted by a torque converter and a continuously variable transmission. A bypass circuit enables an upstream side hydraulic circuit of the hydraulic circuit to communicate... | 04/11/2006 |
| 7008344 | Control apparatus for controlling a shift operation in an automatic transmission A control apparatus for controlling a shift operation in an automatic transmission includes a disengaging side controlling device for performing a feedback control so as to substantially match a slip amount calculated by a slip amount calculating device with a targe... | 03/07/2006 |
| 7010405 | System and method of controlling automatic transmission A shift control system for an automatic transmission wherein shifting from a first gear ratio to a second gear ratio is carried out by releasing the hydraulic pressure of a first friction engaging element for disengagement thereof and supplying the hydraulic pressur... | 03/07/2006 |
