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1. 发明专利

JP2004125063A Controller for belt type continuously variable transmission 审中-公开
公开(公告)号：JP2004125063A
公开(公告)日：2004-04-22
申请号：JP2002290298
申请日：2002-10-02
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： SAWADA MAKOTO
IPC分类号： F16H9/00 , F16H61/02
摘要： PROBLEM TO BE SOLVED: To provide a controller for a belt type continuously variable transmission capable of preventing the belt slipping caused by the delay in response of hydraulic pressure, when a running range is selected during line pressure minimizing control in very low temperature starting.
SOLUTION: When a D range is selected during the line pressure minimizing control in very low temperature starting, the rise of a forward movement clutch fastening pressure P
c is delayed as P
1 , until a timer t reaches a predetermined time T
α , that is, until an actual hydraulic pressure of the line pressure P
L is maximized.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2004125015A Hydraulic pressure control device for belt type continuously variable transmission 审中-公开
公开(公告)号：JP2004125015A
公开(公告)日：2004-04-22
申请号：JP2002287379
申请日：2002-09-30
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： SAWADA MAKOTO
IPC分类号： F16H9/00 , F16H61/10
摘要： PROBLEM TO BE SOLVED: To prevent the generation of overshoot of a secondary pressure in transition for changing a change gear ratio in steps, for example, in quickly pushing the pedal.
SOLUTION: A target secondary pressure Tsec corresponding to the torque capacity in a target change gear ratio on the basis of the change of a throttle opening TVO is raised in steps, and an actual hydraulic pressure estimated target value PSsec with time constant of primary delay based on an engine rotating speed as a parameter, is determined as a target in a process to the target secondary pressure, to perform the feedback control, when the difference between PTsec and the actual secondary pressure Prsec is more than a specific value. As the PSsec approximately meets the actual secondary pressure Prsec, and the deviation therebetween is small, the overshoot of the hydraulic pressure by the accumulation of deviation can be prevented.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004124965A Controller for belt type continuously variable transmission 审中-公开
公开(公告)号：JP2004124965A
公开(公告)日：2004-04-22
申请号：JP2002285502
申请日：2002-09-30
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： SAWADA MAKOTO , YAMAMOTO MASAHIRO , YAMAGUCHI MIDORI
IPC分类号： F16H9/00 , F16H59/72 , F16H61/02 , F16H61/10 , F16H61/662
CPC分类号： F16H61/66272 , F16H59/72 , F16H61/66259 , F16H2061/6612 , Y10T477/623 , Y10T477/6237 , Y10T477/62423
摘要： PROBLEM TO BE SOLVED: To sufficiently secure the oil pressure necessary for gear shift, in gear shifting by a select switch, and to prevent the slipping of a belt. SOLUTION: When the switch shifting is determined, a delay time dT for securing the rise of oil pressure is determined on the basis of an engine rotating speed and an oil temperature, and a target change gear ratio determined by a first target change gear ratio determining part just before the change of a range signal, is held by the determined delay time dT. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2004108525A Hydraulic pressure reduction ratio limiting device in v-belt type continuously variable transmission 有权
公开(公告)号：JP2004108525A
公开(公告)日：2004-04-08
申请号：JP2002274036
申请日：2002-09-19
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： AOKI YOSHINOBU , SAWADA MAKOTO , YAMAMOTO MASAHIRO , TANAKA MIDORI , IIDA TOSHIMOTO
IPC分类号： F16H9/00 , F16H59/68 , F16H61/02 , F16H61/66 , F16H61/662
CPC分类号： F16H61/66254 , F16H61/66272 , Y10T477/6197
摘要： PROBLEM TO BE SOLVED: To prevent the undershoot generated on actual secondary pressure and primary pressure caused by sudden reduction of target secondary pressure and target primary pressure. SOLUTION: When a reduction ratio of the target secondary pressure and the target primary pressure calculated by a target secondary pressure calculating part 101 and a target primary pressure calculating part 102 is more than a predetermined value, a reduction ratio-limited secondary pressure and a reduction ratio-limited primary pressure on which the reduction ratio of the target secondary pressure and the target primary pressure is limited by a reduction ratio limiting part 104, is calculated. As the hydraulic pressure control of the secondary pressure and the primary pressure is performed under the reduction ratio-limited secondary pressure and the reduction ratio-limited primary pressure having a gentle reduction gradient by limiting the reduction ratio, the generation of the undershoot on the actual secondary pressure and primary pressure can be prevented. By preventing the undershoot, the shortage of the torque capacity caused by the lowering of the hydraulic pressure is not generated. COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2004092847A Hydraulic control device of vehicular automatic transmission 有权
公开(公告)号：JP2004092847A
公开(公告)日：2004-03-25
申请号：JP2002257548
申请日：2002-09-03
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： SAWADA MAKOTO
IPC分类号： F16H9/00 , F16H61/02
摘要： PROBLEM TO BE SOLVED: To properly set an oil pressure corresponding to an actual input torque in the torque converter area of a belt CVT with torque converter.
SOLUTION: It is checked whether an operation state is within the torque converter area (T/C area) or not in step 101. When it is in T/C area, engine speed Ne is read in step 102, and a limit value to Ne is read from a torque maximum value table in step 103. The table determines a torque upper limit along an engine speed Ne-torque converter output Tc diagram represented by τNe
2 . When an engine torque signal value Te is the limit value or less in and after step 104, Te is taken as input torque. When it is larger than the limit value, a target line pressure or the like is set by use of this limit value as the input torque. Accordingly, the target line pressure or the like can be prevented from being set too high based on a torque estimation more excessive than the actual input torque, and the deterioration of power performance can be prevented.
COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2004084786A Line pressure controller for continuously variable transmission 审中-公开
公开(公告)号：JP2004084786A
公开(公告)日：2004-03-18
申请号：JP2002246423
申请日：2002-08-27
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： WATANABE SHINICHIRO , SAWADA MAKOTO , AOKI YOSHINOBU , NONOMURA RYOSUKE
IPC分类号： F16H9/00 , F16H59/36 , F16H61/00 , F16H61/02 , F16H61/662
CPC分类号： F16H61/0021 , F16H59/36 , F16H61/66272 , F16H2059/366
摘要： PROBLEM TO BE SOLVED: To prevent a cavitation noise generated in a hydraulic pump at a high rotation of an engine.
SOLUTION: A line pressure control part 203 for controlling line pressure calculates a target value of line pressure from inputted input torque information, a target gear ratio, or the like. A line pressure setting part 205 sets an upper limit value of line pressure according to an inputted range signal when the engine speed is a prescribed engine speed or higher. The line pressure control part 203 controls the line pressure, when the line pressure upper limit value is set, so as not to exceed the set line pressure upper limit, to regulate the rise of line pressure. Accordingly, the cavitation noise generated in the hydraulic pump 80 which generates the base pressure of line pressure at a high rotation of the engine can be prevented.
COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2003083430A Hydraulic controller for belt type continuously variable transmission 有权
标题翻译：液压控制器用于带式连续变速传动
公开(公告)号：JP2003083430A
公开(公告)日：2003-03-19
申请号：JP2001276158
申请日：2001-09-12
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： IIDA TOSHIMOTO , SAWADA MAKOTO
IPC分类号： F16H61/02 , F16H61/00 , F16H61/662
CPC分类号： F16H61/66272 , F16H61/0021 , F16H61/66254 , F16H2061/66277 , Y10T477/6237 , Y10T477/6242
摘要： PROBLEM TO BE SOLVED: To provide an automatic transmission allowing new addition of a one-way clutch effective in transmission shock measures while suppressing increase of an axial dimension of the automatic transmission. SOLUTION: This hydraulic controller for the belt type continuously variable transmission has a transmission mechanism part 100 comprising a belt 40 wound between a primary pulley 20 and a secondary pulley 30, a line pressure control means 210 controlling a line pressure PL supplied to the pulley 30 on the basis of a target variable speed ratio io, and a variable speed pressure control means 220 controlling a variable speed pressure Pc supplied to the pulley 20 on the basis of the variable speed ration io with the line pressure PL as an original pressure. When it is detected that an actual variable speed ratio i found from a primary rotation Npri and a secondary rotation Nsec accomplishes the target variable speed ratio io calculated by a control unit 1, the line pressure PL is reduced to an oil pressure PL(n)= PL(n-1)-α} that is smaller than the preceding line pressure PL(n-1) by a reduction margin α.
摘要翻译：要解决的问题：提供一种自动变速器，其允许在抑制自动变速器的轴向尺寸的增加的同时，有效地进行变速器冲击措施的新增加的单向离合器。解决方案：用于带式无级变速器的这种液压控制器具有传动机构部分100，其包括卷绕在主带轮20和次级带轮30之间的带40，线路压力控制装置210，其控制提供给带轮30的管线压力PL 以目标变速比io为基础的变速调速装置220，以及以行压PL作为原始压力的变速比io控制提供给滑轮20的变速压力Pc的变速压力控制装置220。当检测到从主旋转Npri和次旋转Nsec发现的实际变速比i完成由控制单元1计算出的目标变速比io时，管路压力PL被减小到油压PL（n） = PL（n-1）-α}，其小于前一线压力PL（n-1）减少余量α。

8. 发明专利

JP2004190492A Shift control system of automatic transmission 有权
公开(公告)号：JP2004190492A
公开(公告)日：2004-07-08
申请号：JP2002355427
申请日：2002-12-06
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： MORIYA YUKIHITO , SAWADA MAKOTO
IPC分类号： B60W10/04 , B60W10/06 , B60W10/10 , B60W10/101 , F02D29/00 , F16H9/00 , F16H59/14 , F16H59/72 , F16H61/12 , F16H63/50 , B60K41/00 , B60K41/14
CPC分类号： F16H61/662 , F16H63/50
摘要： PROBLEM TO BE SOLVED: To provide a shift control system of an automatic transmission for effectively preventing a rise in an oil temperature. SOLUTION: When hydraulic pressure supplied to a primary pulley cylinder chamber 10c and a secondary pulley cylinder chamber 11c is a prescribed temperature or more and a vehicle speed is a prescribed speed or more, torque is reduced by restricting output torque of an engine, and the hydraulic pressure is also adjusted according to input torque inputted to a belt type continuously variable transmission. Thus, the vehicle speed is reduced, and friction is reduced, and a drop in the oil temperature can be quickened. The friction of an oil pump 80 for generating the hydraulic pressure can be reduced by reducing the hydraulic pressure according to the input torque, and a further drop in the oil temperature can also be quickened since contact frictional force can be reduced when sandwiching a V belt by a pulley. COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JP2004125040A Hydraulic control device for v-belt type continuously variable transmission 审中-公开
公开(公告)号：JP2004125040A
公开(公告)日：2004-04-22
申请号：JP2002288547
申请日：2002-10-01
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： AOKI YOSHINOBU , SAWADA MAKOTO
IPC分类号： F16H9/00 , F16H61/02
摘要： PROBLEM TO BE SOLVED: To secure necessary hydraulic pressure even in a case where oil temperature is changed.
SOLUTION: An oil temperature correction quantity determining part 303 determines oil temperature correction quantity in accordance with oil temperature, and a line pressure correcting part 302 and a secondary pressure correcting part 304 correct target values for line pressure and secondary pressure based on the temperature correction quantity. A pressure control part 305 and a secondary pressure control part 306 conduct hydraulic pressure control based on the corrected target values for line pressure and secondary pressure. At low temperature, oil viscosity is set high. Necessary hydraulic pressure can thus be secured even in a case where response of the hydraulic pressure cannot be secured by similar direction of oil pressure to that at room temperature by proper direction of oil pressure in accordance with the oil temperature.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2004124966A Controller of belt-type continuously variable transmission 有权
公开(公告)号：JP2004124966A
公开(公告)日：2004-04-22
申请号：JP2002285503
申请日：2002-09-30
申请人： Jatco Ltd , ジヤトコ株式会社
发明人： SAWADA MAKOTO , WAKI HIRONORI
IPC分类号： F16H9/00 , F16H47/06 , F16H61/02 , F16H61/10 , F16H61/662
CPC分类号： F16H61/66259 , F16H61/66272 , Y10T477/6237
摘要： PROBLEM TO BE SOLVED: To improve fuel economy by preventing the generation of excessive line pressure, while improving the belt strength durability. SOLUTION: In this belt type continuously variable transmission wherein a torque ratio τ is determined from a speed ratio e, an input torque Tat is estimated on the basis of the determined torque ratio τ, and oil pressure of a primary pulley and line pressure supplied to a secondary pulley are controlled on the basis of the estimated input torque Tat and a target gear change ratio, the torque ratio τ is determined by using a map A when the speed ratio e is increased, and the torque ratio τ is determined by using a map B created by offsetting the map A in the normal direction by e 1 when the speed ratio 3 is decreased. COPYRIGHT: (C)2004,JPO

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