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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Takahashi; Nobuaki
Address:
Toyota, JP
No. of patents:
14
Patents:












Patent Number Title Of Patent Date Issued
6264580 Control system for automatic transmission July 24, 2001
A control system for an automatic transmission, which is capable of controlling the hydraulic pressures for frictional engagement units when a predetermined shift is performed such that a first frictional engagement unit is engaged and a second frictional engagement unit is released, bei
6132334 Control system for automatic transmission October 17, 2000
A control system for an automatic transmission, which is capable of controlling the hydraulic pressures for frictional engagement units when a predetermined shift is performed such that a first frictional engagement unit is engaged and a second frictional engagement unit is released, bei
5964335 Parking device for automatic transmission October 12, 1999
A parking control mechanism to prevent generation of noise and shock when a parking range is released after a vehicle has been parked so that a driver does not feel uncomfortable. A parking apparatus of an automatic transmission has a parking gear; a parking pole swingably disposed and
5954177 Oil seal for automatic transmission September 21, 1999
An oil seal member is compressed between a connecting pipe for supplying oil to an oil chamber of a hydraulic servo and the cylinder drum of the hydraulic servo. The cylinder drum has an interior oil chamber and turns through a predetermined angle upon operation of a frictional engagemen
5816978 Control system for automatic transmission October 6, 1998
An automatic transmission control system for controlling oil pressure of a frictional engagement device in accordance with an input torque to an automatic transmission, comprising: a plurality of input torque estimating devices for estimating the input torque to the automatic transmissio
5674154 Hydraulic control system for automatic transmission October 7, 1997
A hydraulic control system for an automatic transmission to establish a predetermined stage by applying a first frictional engagement element and releasing a second frictional engagement element, comprising: a first hydraulic servo for actuating the first frictional engagement element; a
5672138 Control system for automatic transmission September 30, 1997
A control system serves for surely preventing occurrence of a shift shock due to engagement of a one-way clutch with an automatic transmission in non-shift condition, and comprises a disengagement detecter for detecting disengagement of the one-way clutch; a power-on detecter for detecti
5669849 Apparatus for controlling concurrent releasing and engaging actions of frictional coupling devic September 23, 1997
A motor vehicle shift control apparatus wherein two hydraulically operated frictional coupling devices are simultaneously released and engaged, respectively, to effect a clutch-to-clutch shift of an automatic transmission, including an overshoot control device for compensating the hy
5643135 Apparatus for controlling concurrent releasing and engaging actions of frictional coupling devic July 1, 1997
An apparatus for controlling an automatic transmission of a motor vehicle wherein two hydraulically operated frictional coupling devices are released and engaged, respectively, to effect a clutch-to-clutch shift-up action of the transmission, and a shift-up boundary line for determining
5634869 Shift control system for automatic transmission June 3, 1997
A shift control system can perform clutch-to-clutch shifts without occurrence of delay in shifting operation and aggravation of shift shock, by decreasing an engaging force of a first frictional engagement device and increasing an engaging force of a second frictional engagement device,
5616094 Hydraulic control system for automatic transmission April 1, 1997
A hydraulic control system for an automatic transmission includes a regulator valve in a hydraulic circuit for supplying pressure to a servo of a frictional engagement element. The regulator valve has an input port, an output port and a drain port. A valve member of the regulator valve
5605516 Oil pressure controller of automatic transmission February 25, 1997
An oil pressure controller of an automatic transmission which is capable of supplying engaging pressures to hydraulic servos of two frictional engaging elements which require different engaging pressures by a single pressure governing valve with a good pressure governing accuracy. The oi
5588927 Control system for automatic transmission December 31, 1996
A control system for an automatic transmission includes a first frictional engagement element and a second frictional engagement element; and a first hydraulic servo for controlling the application/release of the first frictional engagement element and a second hydraulic servo for contro
4984485 Apparatus and method for controlling automatic transmission for motor vehicle, with anti-squat s January 15, 1991
A method and an apparatus for controlling a vehicle automatic transmission which has a plurality of selectively established gear positions and is shifted to and temporarily held in a predetermined one of the gear positions other than the lowest-gear position, upon operation of a shift










 
 
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