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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Ando; Masahiko
Address:
Okazaki, JP
No. of patents:
30
Patents:












Patent Number Title Of Patent Date Issued
5957800 Shift control system for automatic transmission September 28, 1999
A shift control system of an automatic transmission sets a predetermined gear stage by applying a first frictional engagement element and releasing a second frictional engagement element. A pressure regulating mechanism regulates an oil pressure to be fed to or drained from the first
5947856 Control system for automatic transmission, including coordinated frictional engagement element r September 7, 1999
A control system for an automatic transmission, in which a first frictional engagement element and a second frictional engagement element are released according to a shift from a running range to a non-running range. The shift from the running range to the non-running range is detected,
5725451 Control system for automatic transmission March 10, 1998
A control system for use in an automatic transmission which includes a gear shift mechanism having first and second frictional engagement elements for establishing: a first gear stage with the first frictional engagement element being applied and the second frictional engagement element
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
5665027 Shift control system for automatic transmission September 9, 1997
A shift control system of an automatic transmission for setting a predetermined gear stage by applying first frictional engagement means and releasing second frictional engagement means, comprising: a pressure regulating mechanism for regulating an oil pressure to be fed to or draine
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
5593365 Control system for automatic transmission January 14, 1997
A control system for an automatic transmission including a main transmission unit for setting a reverse stage and a plurality of forward stages and an auxiliary transmission unit connected in series to the main transmission unit and capable to be changed between two higher and lower
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
5583768 Shift control system for preventing engine racing December 10, 1996
A shift control system for shifting an automatic transmission from a predetermined gear stage to another by draining an oil pressure from predetermined frictional engagement element to release the same frictional engagement element and by feeding the oil pressure to another frictional
5573478 Quick shift hydraulic control for a two stage jump shift November 12, 1996
A controller for an automatic transmission which reduces wear of frictional engagement elements and shortens gear change time even when a gear change jump is made. The controller of the present invention includes a first hydraulic servo to which oil is supplied to make a gear change jump
5527233 Hydraulic control apparatus for controlling an engaging state of a lock-up clutch of an automati June 18, 1996
A hydraulic control apparatus for an automatic transmission of a motor vehicle, the transmission including a lock-up clutch, the apparatus including a lock-up clutch switching valve device which is operable for selectively placing the lock-up clutch in a fully released, a partially e
5522779 Shift control system for automatic transmission June 4, 1996
A shift control system is provided for an automatic transmission having, connected in series, a secondary shifting unit, capable of being shifted between a high speed stage and a low speed stage, and a primary shifting unit which provides plural speed stages including a reverse speed sta
5505673 Control system for automatic transmissions April 9, 1996
A control system for an automatic transmission, includes a first hydraulic servo adapted to be fed with oil for effecting a shift to a target gear stage; a second hydraulic servo adapted to be fed with the oil for effecting a shift to the target gear stage; a limit oil feed circuit f
5501645 Control system for vehicular automatic transmissions with a quick-shift hydraulic system for man March 26, 1996
A vehicular automatic transmission and control system therefor includes an automatic transmission including a planetary gear unit and a plurality of friction elements for connecting the components of the planetary gear unit selectively to rotary members or stationary members; a hydraulic
5496230 Control system for automatic transmission March 5, 1996
A control system for an automatic transmission, comprising a gear transmission unit for establishing a predetermined gear stage by applying a plurality of frictional engagement elements selectively. The gear transmission unit includes a main transmission portion capable of establishi
5492508 Hydraulic control system for an automatic transmission February 20, 1996
A controller of an automatic transmission provides gear changes with optimum gear change characteristics under any traveling conditions. The controller of the automatic transmission of the present invention includes an input torque detector for determining input torque to the transmissio
5472389 Hydraulic control system for automatic transmission December 5, 1995
A hydraulic control for an automatic transmission is composed of a gear shift mechanism having first and second frictional engagement elements, a hydraulic control unit for the engagement elements, and an electronic control unit for the hydraulic control unit. The first element is engage
5411451 Control system for controlling the pressure of the oncoming servo hydraulic pressure based on a May 2, 1995
A control system is provided for servo hydraulic pressure in an automatic transmission. Upon downshifting, one of first and second frictional engagement devices is released while the other is engaged. A directional control valve is provided to feed or drain servo hydraulic pressure to
5403248 Control system for changing servo timings of hydraulic pressure based on a torque input in autom April 4, 1995
A control system is provided for servo hydraulic pressure in an automatic transmission having planetary gear mechanisms. First and second frictional engagement devices, whose servo pressures are reversed in feed/drain relationship between desired two high speed stages, are controlled by
5401219 Oil pressure control system for automatic transmission March 28, 1995
An oil pressure control system for an automatic transmission for executing a downshift by disengaging a first frictional engagement element and engaging a second frictional engagement element. At a latter stage of a shift, the first frictional engagement element has its torque capacity
5368531 Control method of and system thereof for inversely proportionally raising and lowering servo hyd November 29, 1994
A method is provided for the control of servo hydraulic pressure in an automatic transmission. Servo hydraulic pressure is adapted to engage or release first and second frictional engagement elements arranged in such a relationship that, upon shifting from one particular speed stage to
5351577 Control system for servo hydraulic pressure of two friction engaging means during an N-R shift i October 4, 1994
A control system is provided for servo hydraulic pressure in an automatic transmission having planetary gear mechanisms. Shifting elements of the mechanisms can be connected to establish a different power flow in accordance with engagement or release of frictional engagement devices
5334114 Control system for servo hydraulic pressure in vehicular automatic transmission August 2, 1994
A control system is provided for servo hydraulic pressure in a vehicular automatic transmission having planetary gear mechanisms. Shifting elements of the mechanisms can be connected to establish a different power flow in accordance with engagement or release of frictional engagement dev
5254053 Five-speed automatic transmission October 19, 1993
A five-speed automatic transmission includes a main transmission and an over-drive transmission of a front disposition type. The main transmission includes three sets of planetary gears, a clutch for engaging and disengaging speed-change elements of the planetary gear sets, and a brake
5026337 Supporting device of a planetary ring gear for an automatic transmission June 25, 1991
A ring gear of a dual planetary gear, or a big ring gear is fixed on a peripheral section of a disc type supporting member, and both sides of the supporting member are supported by thrust bearings situated in small radius section of the supporting member. The ring gear of the planetary
4994007 Counter gear supporting device for an automatic transmission February 19, 1991
A counter gear section including its supporting device is constituted as a sub assembly. The sub assembly is formed by setting a bearing unit on the counter gear, and the assembly is inserted in the inner surface of a supporting wall of the case and is held and fixed by a brim and a snap
4934215 Automatic transmission June 19, 1990
An automatic transmission comprising a single planetary gear unit and a dual planetary gear unit has an output member located in its center so that the output member encloses an input shaft.In the case of a three speed automatic transmission mechanism, a first clutch located around a rin
4914978 Automatic transmission April 10, 1990
An automatic transmission has a main transmission mechanism having two planetary gear units made on a first axle, and a sub transmission mechanism having two planetary gear units made on a second axle; the main transmission mechanism having a single planetary gear unit and dual plane
4864892 Automatic transmission mechanism September 12, 1989
In an automatic transmission mechanism for an automatic transmission mounted on automobiles having two planetary gears, a one-way clutch functioning in shifting up and down between third and fourth speed is laid, and a fourth clutch is laid between the one-way clutch and an input mem










 
 
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