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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Fukumura; Kagenori
Address:
Toyota, JP
No. of patents:
54
Patents:


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Patent Number Title Of Patent Date Issued
6178372 Motor vehicle drive system controller and automatic drive controller January 23, 2001
A motor vehicle drive system controller is adapted to automatic drive control, the engine and the transmission being among the objects of control. The power output of the motor is controlled so as to maintain either a consistent drivable mode or a consistent undrivable mode as the au
6125321 Motor vehicle drive system controller and automatic drive controller September 26, 2000
A motor vehicle drive system controller is adapted to automatic drive control, the engine and the transmission being among the objects of control. The power output of the motor is controlled so as to maintain either a consistent drivable mode or a consistent undrivable mode as the au
6093263 Soft nitrided gear and method of fabricating the same July 25, 2000
A gear having high pitching resistance, sufficient surface hardness, sufficient hardened depth, high abrasion resistance, high breakage resistance, high fatigue resistance, and low gear noises. A material equivalent to JIS-SCM420 is soft nitrided for two hours in a mixture gas contai
6070118 Transmission control system using road data to control the transmission May 30, 2000
A control system for a transmission, comprises a shift control function to output a shift instruction signal on the basis of a predetermined shift pattern and a road data detecting function to detect the road data of a route to be followed by a vehicle. This control system further compri
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
5960919 Automatic transmission with a separator for removing oil from the surface of a rotary member October 5, 1999
An automatic transmission including at least one rotary member; a rotary member enclosure enclosing the rotary member; and an oil reservoir arranged below the rotary member enclosure for collecting and reserving the oil. An oil separator is located facing the outer circumference of the
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
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
5895435 Vehicle drive mode estimating device, and vehicle control apparatus, transmission shift control April 20, 1999
Apparatus for estimating a drive mode of a motor vehicle desired by an operator of the motor vehicle, including a variable calculating device and a drive mode estimating device, wherein the variable calculating device calculates at least one of drive mode indicating variables such as a d
5873802 Vehicle control apparatus having means for preventing interference between transmission controls February 23, 1999
A running stability controller is activated upon the instability of a vehicle and controls at least one of an output of an engine, a braking force applied to the vehicle and a gear ratio of an automatic transmission. A manual shifting controller which shifts the automatic transmissio
5857443 Devices for controlling plant, clutch slip, and idling engine speed and methods of controlling t January 12, 1999
The present invention realizes high-speed and stable controls irrespective of the characteristic perturbations accompanied with the variation in operation point of a plant. The principle of the invention is applied to slip control of a lock-up clutch of a transmission and to idling engin
5749061 Clutch slip control device and method of manufacturing the same, clutch slip control method, and May 5, 1998
A clutch slip control device includes: a slip revolution speed detecting circuit for detecting an actual slip revolution speed of a clutch; a memory unit for storing constants set to satisfy response and stability of a feedback control system of the slip conditions, the constants being
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
5697867 Devices for controlling plant, clutch slip, and idling engine speed and methods of controlling t December 16, 1997
The present invention realizes high-speed and stable controls irrespective of the characteristic perturbations accompanied with the variation in operation point of a plant. The principle of the invention is applied to slip control of a lock-up clutch of a transmission and to idling engin
5676617 Automatic transmission for vehicles October 14, 1997
An automatic transmission for a vehicle, as provided a plurality of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other. In the two sets of planetary gear units in which the ratios of the
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
5627750 Clutch slip control device and method of manufacturing the same, clutch slip control method, and May 6, 1997
A clutch slip control device includes: a slip revolution speed detecting circuit for detecting an actual slip revolution speed of a clutch; a memory unit for storing constants set to satisfy response and stability of a feedback control system of the slip conditions, the constants being
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
5486146 Hydraulic control circuit for automatic transmission January 23, 1996
A hydraulic control circuit for an automatic transmission which has a plurality of hydraulic type frictional engagement elements for switching gear stages and a lockup clutch juxtaposed to a hydraulic power transmission device for transmitting engine power to the gearing. The hydraul
5235877 Shift control apparatus for automatic transmission August 17, 1993
A shift control apparatus for an automatic transmission including a gear train having a plurality of one-way clutches having their engagement states switched in accordance with torque applying directions and a plurality of frictional engagement units adapted to be engaged by oil pres
4945482 Transmission control system July 31, 1990
A transmission control system for controlling a transmission. The system has a main transmission with a speed changing mechanism and an output shaft, a substransmission connected to the output shaft, and a control system for receiving outputs from a number of sensors which sense the
4896561 Lubricating oil supply device for transmission mechanism January 30, 1990
A device for supplying lubricating oil in a transmission mechanism, the transmission mechanism comprising: an input shaft; an output shaft disposed parallel to the input shaft; a first rotary body provided on the input shaft; a second rotary body provided on the output shaft; a trans
4858500 Apparatus for controlling lock-up clutch in automatic transmission system having main transmissi August 22, 1989
A transmission control device according to the present invention comprises a main transmission having a torque converting device provided with a direct clutch for effecting engagement and disengagement of the input member with output member of a torque converting portion; a sub trans
4838124 System for integrally controlling automatic transmission and engine June 13, 1989
In a system for integrally controlling an automatic transmission and an engine wherein engine torque is changed during shifting, it is detected whether or not various communication means provided for carrying out the engine torque change is in a failed state. If so, a shift parameter or
4825372 System for integrally controlling automatic transmission and engine April 25, 1989
In a system for integrally controlling an automatic transmission and an engine, wherein gear stages are automatically switched in accordance with a present shift map and engine torque is changed by a predetermined value by lag angle control to maintain satisfactory the shift characterist
4819777 System for integrally controlling an engine and an automatic transmission having a device for de April 11, 1989
Determination of the engagement of a lockup clutch is performed in a system for integrally controlling an automatic transmission and an engine, wherein gear stages can be automatically switched in accordance with a preset map, the lockup clutch of a torque converter is engageable during
4819187 System for integrally controlling automatic transmission and engine April 4, 1989
A system for integrally controlling an automatic transmission and an engine, wherein gear stages are automatically switched in accordance with a preset shift map, and an engine torque is changed by a predetermined change value during shifting to thereby maintain the satisfactory shift
4807497 System for integrally controlling automatic transmission and engine February 28, 1989
In a system for integrally controlling an automatic transmission and an engine, having a pattern select switch, and wherein engine torque is changed by a predetermined change value to thereby maintain the satisfactory shift characteristics, at least one of an engine torque change per
4800781 System for integrally controlling automatic transmission and engine January 31, 1989
In a system for integrally controlling an automatic transmission and an engine, an ignition timing is temporarily lagged during shifting to decrease an engine torque. The system comprises a detecting device for detecting the presence of a shifting condition; a delaying device for del
4792012 Anti torque shock control device and method engaging torque transmitting clutch between vehicle December 20, 1988
A vehicle has at least two wheels, a transmission mechanism, and a clutch which can be selectively engaged to at least partially rotationally couple together these two wheels. This anti torque shock control device includes a means for detecting whether or not shift range of the transmiss
4789937 Method and system for shift control of an automatic transmission December 6, 1988
A shift control of an automatic transmission including a first transmission section and a second transmission section, which are capable of shifting automatically and independently of each other, and the first transmission section and the second transmission section are simultaneously or
4781081 Hydraulic control for vehicle transmission November 1, 1988
A transmission for a vehicle has a shift mechanism, a hydraulic actuator for operating the shift mechanism and a hydraulic control for supplying and discharging working oil to and from the hydraulic actuator to control the shift of the shift mechanism. The hydraulic control includes a fl
4779492 Twin type hydraulic pressure control device with individual line pressure regulation valves for October 25, 1988
This hydraulic pressure transmission control device is for a vehicle with a transmission system which has, in series in the specified order in the rotational force transmission path, a first transmission mechanism which can be set to any one of several speed stages according to selective
4771386 Method and system for shift control of an automatic transmission for vehicle September 13, 1988
A shift control of an automatic transmission for a vehicle, which includes a first transmission section capable of automatically shifting gears in association with at least vehicle speed and engine load and a second transmission section capable of shifting between the lower gear side and
4753136 Hydraulic control of transmission June 28, 1988
A fluid pressure actuator for a frictionally engaged unit of a vehicular transmission includes a first transmission and a second transmission coupled to the output side of the first transmission and provided with a speed step change mechanism which has a frictionally engaging element for
4745826 Shift condition detector for an automatic vehicle transmission May 24, 1988
A main transmission has a transfer gear attached to its output shaft. The transfer gear provides two wheel high speed drive, four wheel high speed drive, and four wheel low speed drive. A control system controls the main transmission according to a detected speed mode of the transfer gea
4729450 Anti torque shock control device and method engaging torque transmitting clutch between vehicle March 8, 1988
In a 2WD/4WD transmission system for a vehicle including a central differential device for variably differentiating rotational power between a pair of front wheels and a pair of rear wheels, and a clutch for selectively locking the differential device for positive four wheels driving
4724725 Transmission control system for controlling a main transmission speed changing pattern relative February 16, 1988
A transmission control device for controlling a transmission having main and sub transmissions in accordance with the state of running of a vehicle.The transmission control device having this constitution can control the main transmission on the basis of and in accordance with the transm
4718311 Hydraulic control system for automatic transmissions January 12, 1988
A hydraulic control system for an automatic transmission has an inhibitor valve which comprises a change-over valve having a first set position and a second set position and functioning to supply and discharge a hydraulic pressure to and from a hydraulic servomechanism for a friction eng
4713989 Shift shock suppression in automatic transmission December 22, 1987
A hydraulic control system for an automatic transmission, including a pressure source, a regulator valve for regulating the oil pressure from the source, a first hydraulic servo for setting the transmission in a high speed position upon receipt of output oil pressure of the pressure
4713988 Transmission control device December 22, 1987
The transmission control device of the present invention comprises a main transmission and a sub transmission and has a first hydraulic switching device which is controlled by automatic operation for setting the shift range of the sub transmission and a second hydraulic switching device
4709597 Hydraulic control system in an automatic transmission for a vehicle December 1, 1987
A hydraulic control system of an automatic transmission for a vehicle, wherein, in order to achieve an up shift from a specific gear stage to another gear stage in a drive range, there are provided a frictionally engaging device for the normal engagement arranged in series with a one
4708032 Transmission control device having selectable rotation speed detector November 24, 1987
A transmission control device in accordance with the present invention for controlling a transmission system which is composed of a main transmission and a sub transmission, has a first rotational speed detector which is disposed on the input side of the sub transmission and a second rot
4700591 Hydraulic shift controller for an automatic transmission having a first and second section October 20, 1987
A hydraulic controller for the hydraulic pressure in an automatic transmission for a vehicle, which includes at least a first transmission section capable of automatically shifting gears in association with at least vehicle speed and engine load, and a second transmission section cap
4699249 Lubrication system for power transmission chain October 13, 1987
A lubricating system for a transmission of the kind having a driving shaft driven to rotate, a transmission shaft disposed parallel to the driving shaft, a chain for transmitting power from the driving shaft to the transmission shaft and a chain case enclosing the chain, the lubricating
4697479 Engine throttle opening dependent hydraulic vehicular transmission system October 6, 1987
A hydraulic controller for transmission includes a brake and a clutch each of which corresponds to a different transmission ratio. An orifice control is provided in the conduit structure of the hydraulic circuit for actuating the clutch and brake such that a working oil quantity is varie
4693143 Control device for an automatic transmission system September 15, 1987
A transmission system of the present invention which has a main transmission and a sub transmission includes a first output shaft speed detecting means for detecting the rotational speed of the output shaft of the main transmission and a second output shaft speed detecting means for
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