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1. 发明专利

JPH0262470A VARIABLE SPEED CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0262470A
公开(公告)日：1990-03-02
申请号：JP20952488
申请日：1988-08-25
申请人： NISSAN MOTOR
发明人： TAKATORI KAZUHIRO
IPC分类号： F16H3/66 , F16H59/54 , F16H59/68 , F16H61/02 , F16H61/08
摘要： PURPOSE:To eliminate the feeling of physical disorder at the time of speed change in down shift during the engine brake command by releasing the fastening delay of other friction element if the speed change is accompanied with the engine brake command at the time of speed change in down shift. CONSTITUTION:The reduction brake pressure PRD/S is supplied to perform, eliminating the direct clutch pressure PD/C. For example, at the time of speed change of 4 3, if the automatic variable speed range is normal, an orifice cancel valve 18 cut off a by-pass circuit 17, and a one way orifice 16 controls the rising speed so as to delay the fastening. But if the speed change in 4 3 down shift is accompanied with the engine brake command, the orifice cancel valve 18 opens the by-pass circuit 17 with the III range pressure PIII, and the reduction brake pressure rises quickly so as to quickly fasten the reduction brake RD/B. Consequently, the speed change in down shift is performed without the engagement of the reduction one way clutch RD/OWC, and the feeling of physical disorder generated by the delay of engine brake after the speed change can be eliminated.

2. 发明专利

JPS6421256A TORQUE SENSOR FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPS6421256A
公开(公告)日：1989-01-24
申请号：JP17644187
申请日：1987-07-15
申请人： NISSAN MOTOR
发明人： HITOMI NOBUTERU , TAKATORI KAZUHIRO , IKEURA KENJI , HIRANO HIROYUKI , MORIKAWA KUNIHIKO , KITAHARA HISASHI , SUGIMOTO MASAKI
IPC分类号： F16H45/02 , F16H59/14 , F16H59/16 , F16H61/04 , F16H61/10 , G01L3/10
摘要： PURPOSE:To accurately detect an output torque transmitted to a counter shaft so as to improve control accuracy by arranging a torque sensor having sensing coils on a stationary portion side member opposite to a circular torque sensing face formed on the circumference of the counter shaft connected to an output shaft. CONSTITUTION:Direct shape magnetic anisotropy is provided on the outer circumference or the inner circumference of a counter shaft 13a which is a final out stage connected to an output shaft to form a torque sensing face 20A. The magnetic permeability change of the torque sensing face 20A by tensile force or compressive force based on a torque acting on the torque sensing face 20A is detected by the flat sensing coils 34A, 34B of a torque sensor 20B which is arranged at cylindrical portion 1a of a transmission case opposite to the torque sensing face 20A. Thus, the output torque transmitted to the counter shaft 13a can be detected directly and accurately so that the use of this torque sensing value can remarkably improve the control accuracy of a speed change controller which restrains a speed change shock.

3. 发明专利

JPS63312551A TORQUE DETECTION DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPS63312551A
公开(公告)日：1988-12-21
申请号：JP14626287
申请日：1987-06-12
申请人： NISSAN MOTOR
发明人： TAKATORI KAZUHIRO , HITOMI NOBUTERU , IKEURA KENJI , HIRANO HIROYUKI , MORIKAWA KUNIHIKO , KITAHARA HISASHI , SUGIMOTO MASAKI
IPC分类号： G01L3/10 , F16H59/14 , F16H59/16 , F16H61/00
摘要： PURPOSE:To correctly detect shock caused by shifting by forming a torque detection face of shape-magnetic-anisotropy on the rear side of the final stage fastening element of an output shaft, and providing a torque detection device on a cylindrical member on the transmission side opposing thereto. CONSTITUTION:In the rear side of the final stage fastening element of an automatic transmission, on the outer peripheral face of an output shaft 17, first and second group lines 32A, 32B which have shape-magnetic-anisotropy, are deformed in their shapes by tension and have increased magnet transmission rate namely have positive magnetic distortion characteristic. To a cylindrical member 20 on a transmission case side opposed to the lines 32A, 32B, a torque detector 30B having a detection coil is fitted. When the first and second group lines 32A, 32B of a torque detection face 30A receive tension or compression caused by fluctuation of torque of the output shaft 17, the rate changes and then it is detected by the torque detector 30B. It is thus possible to detect torque fluctuation of shifting shock and the like, in a non-contact condition and good responsiveness and to enable desirable shift control.

4. 发明专利

JPS63311136A MAGNETOSTRICTION TYPE TORQUE SENSOR 失效
公开(公告)号：JPS63311136A
公开(公告)日：1988-12-19
申请号：JP14828687
申请日：1987-06-15
申请人： NISSAN MOTOR
发明人： SUGIMOTO MASAKI , MORIKAWA KUNIHIKO , HITOMI NOBUTERU , IKEURA KENJI , KITAHARA HISASHI , HIRANO HIROYUKI , TAKATORI KAZUHIRO
IPC分类号： G01L3/10
摘要： PURPOSE:To improve torque detecting accuracy, by fixing and arranging first and second coils, which can form magnetic circuits between first and second torque detecting surfaces at positions closely facing first and second grooves, which are set at a positive or negative slant angle with respect to the axial direction, separately. CONSTITUTION:Under the state torque is not applied to a shaft 1, an AC power source 32 for a measuring part 2B is turned ON. When AC is supplied to first and second coils 13A and 13B, magnetic circuits as shown by dotted lines are formed. When the magnetic circuit associated with the first coil 13A is noted, magnetic flux phi goes through a path formed by a first yoke 14A, a gap, a first torque detecting surface 16A and the first yoke 14A, a gap, a first torque detecting surface 16A and the first yoke 14A again. This is true for the magnetic circuit associated with the second coil 13B. A shaft 1 is rotated with a driving means. When torque is applied kin the direction R, the output voltage at output terminals d-b becomes higher than the voltage at output terminals c-b in a bridge circuit 30 in the measuring part 2B. In a signal processing part 34, the output of a rectifier circuit 38B is larger than the output of a circuit 38A. An indicator 36 indicates a specified negative voltage value.

5. 发明专利

JP2001004020A SLIP CONTROL DEVICE FOR TORQUE CONVERTER 失效
公开(公告)号：JP2001004020A
公开(公告)日：2001-01-09
申请号：JP17235399
申请日：1999-06-18
申请人： NISSAN MOTOR
发明人： TAKATORI KAZUHIRO , MAKIYAMA AKIHIRO , MAEKAWA YASUKAZU
IPC分类号： F16H61/14
摘要： PROBLEM TO BE SOLVED: To avoid a fastening delay by resetting the nearest feedback operation value to a value for releasing a lockup clutch when transferring an area between an area for making a torque converter function in a converter state and function in a lockup state and a slip control area. SOLUTION: Whether an area is a lockup area or a converter area or a slip control area is determined from a gear G, a vehicle speed VSP and throttle opening TVO on the basis of an expected shift map and a lockup area map by input information, and whether or not control is a transional period of lockup control is checked by whether or not the control is just after transferring the area between the lockup area and the slip control area. When the control is still in the transitional period, a feedback control operation value Duty is reset to a value for releasing a lockup clutch 11 to thereby prevent slip control at shifting time from becoming unaimed or unanticipated slip control by a fluctuation in actual slip rotation.

6. 发明专利

JPH10132069A LINE PRESSURE CONTROL DEVICE IN LOCKUP TIME OF AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH10132069A
公开(公告)日：1998-05-22
申请号：JP28846096
申请日：1996-10-30
申请人： NISSAN MOTOR
发明人： HARADA TSUNEAKI , SAKAI HIROMASA , TAKATORI KAZUHIRO
IPC分类号： F16H59/44 , F16H61/00 , F16H61/14
摘要： PROBLEM TO BE SOLVED: To realize a line pressure to satisfy a fastening capacity and a lubricating oil amount necessary for a fastening friction element in a lockup condition concurrently, by using a normal time line pressure instead of a lockup time line pressure, in a high car speed area during the time when a lockup fastening is being instructed. SOLUTION: The automatic transmission control unit 8 of an automatic transmission 3 making the fourth speed and the third speed of D range as the object of lockup carries out a specific control program depending on the throttle opening Tvo of an engine 1, the engine rotation frequency Ne, select range signals P, N, D, 1, 2, and R, the turbine rotation frequency Nt of a torque converter 2, and the car speed Vsp which are output from sensors 9, 10, 12, 13, and an inhibiter switch 11, and as a result a line pressure using a normal time line pressure instead of a lockup time line pressure is carried out when it is in a high car speed area in the time when a lockup fastening is instructed, so as to secure the lubricating oil amount of a fastening friction element in a high car speed area.

7. 发明专利

JPH10110816A GEAR SHIFT CONTROLLING DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH10110816A
公开(公告)日：1998-04-28
申请号：JP26411296
申请日：1996-10-04
申请人： NISSAN MOTOR
发明人： TAKATORI KAZUHIRO
IPC分类号： F16H61/02
摘要： PROBLEM TO BE SOLVED: To reduce shifting shock generated when the deceleration is relatively large at the time of coast-down deceleration, in a transmission having a one-way clutch. SOLUTION: When a throttle valve 2 is fully opened, and the deceleration ΔVSP calculated based on the output shaft revolutions NO detected by an output shaft revolutions sensor 11 is larger than a specified value, the down-shift command speed is changed to the higher speed side than normal. Thus, since an automatic transmission 4 actually starts the automatic shift before it is in a driven state, the worsening of shifting shock caused by gear shifting in the driven state.

8. 发明专利

JP2514205B2 失效
公开(公告)号：JP2514205B2
公开(公告)日：1996-07-10
申请号：JP14828587
申请日：1987-06-15
申请人： NISSAN MOTOR
发明人： MORIKAWA KUNIHIKO , HITOMI NOBUTERU , IKEURA KENJI , HIRANO HIROYUKI , KITAHARA HISASHI , SUGIMOTO MASAKI , TAKATORI KAZUHIRO
IPC分类号： G01L3/10

9. 发明专利

JPH06137417A HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06137417A
公开(公告)日：1994-05-17
申请号：JP31575092
申请日：1992-10-30
申请人： NISSAN MOTOR
发明人： TAKATORI KAZUHIRO
IPC分类号： F16H57/04 , F16H61/00
摘要： PURPOSE:To improve cooling effect of operation oil by means of an oil cooler in a low speed stage of an automatic transmission. CONSTITUTION:An oil passage 112 through which oil is discharged for adjusting a pressure from a pressure regulator valve 40 is connected to line pressure oil passage 100 of an oil pump 34 through a first orifice 150. A flow rate switching valve 124 and a second orifice 152 are parallelly arranged upstream of an oil cooler 36. The flow rate switching valve 124 can be selectively switched to an interruption position with which the valve is closed and the oil is supplied to the oil cooler 36 only through the second orifice 152, and a communication position with which the oil is supplied while bypassing the second orifice 152. The flow rate valve 124 is switched based on the speed pressure of an automatic transmission. It is switched to the communication position under the first, second and third speed, while switched to the interruption position under the fourth speed.

10. 发明专利

JPH02240445A OIL HYDRAULIC PUMP FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH02240445A
公开(公告)日：1990-09-25
申请号：JP6297989
申请日：1989-03-14
申请人： NISSAN MOTOR
发明人： TAKATORI KAZUHIRO
IPC分类号： F04C2/18 , F16H47/06
摘要： PURPOSE:To improve efficiency of a pump, while its good workability of assembly is ensured, with clearance control of a drive gear by rotating it by a gear drive shaft providing only a function of transmitting drive power with a gear supporting function provided in a pump housing. CONSTITUTION:A drive gear 41 and a gear drive shaft 43, engaged only in a direction of rotation, can be displaced in a rotary shaft direction and a diametric direction by meshing an engaging pawl 41a of the drive gear 41 with an engaging notch 43a of the gear drive shaft 43. That is, because of connecting structure having only a function of transmitting drive power, looseness for the drive gear 41 is absorbed by this connecting structure eliminating the looseness, so that a seal clearance can be small set of an external gear pump 4 improving pump efficiency. While because the drive gear 41 is supported to a shaft part 40a of a pump housing 40, the axial center of the drive gear 41 and the axial center of a seal surface are aligned for the pump housing 40, so that the alignment can be easily further high accurately performed by a dimensional control at manufacture time.

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