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公开(公告)号：JPH02120555A
公开(公告)日：1990-05-08
申请号：JP27374588
申请日：1988-10-28
Applicant: MAZDA MOTOR
Inventor： KAWAMURA SHUICHI , NOGAMI TAKASHI
Abstract: PURPOSE:To enhance gear change response by controlling the value of line pressure applied to a gear ratio control means and a driven side pulley on the basis of input torque and a target gear ratio at the time of down-shift, and on the basis of input torque and an actual gear ratio at the time of up-shift. CONSTITUTION:In down-shift operation, the effective radius of driving side pulley 10 shrinks and the effective radius of a driven side pulley 11 expands, thereby increasing a gear ratio gradually. In this case, line pressure is set on the basis of applied input torque and a target gear ratio. As this target gear ratio is maximum even for a transient gear ratio in the down-shift operation,the line pressure increases to an upper maximum limit. As a result, the expansion operation of the effective radius of the driven side pulley 11 is quickly done in a short time, together with the shrinkage operation of the effective radius of the driving side pulley 10, thereby improving gear change response in the down-shift operation. Also, in up-shift operation, the line pressure is set on the basis of the applied input torque and a gear ratio, and the shrinkage operation of the effective radius of the driven side pulley 11 gradually takes place, together with the expansion operation of the effective radius of the driving side pulley 10.
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公开(公告)号：JPS6318112A
公开(公告)日：1988-01-26
申请号：JP16117486
申请日：1986-07-09
Applicant: MAZDA MOTOR
Inventor： KAWAMURA SHUICHI , TSUNODA TOSHIYA
Abstract: PURPOSE:To suppress the valve operating noise and improve the silent property in an engine having to intake valves and one exhaust valve per cylinder, by making an operating speed of the exhaust valve at a final stage of valve closing greater than that of the intake valves at an initial stage of valve opening in an overlap period. CONSTITUTION:When a cam shaft 13 is rotated synchronously with an engine, two intake vales 6 and one exhaust valve 7 per cylinder are opened and closed through rocker arms 16 and 17 by intake and exhaust cam surface 13a and 13b formed on the cam shaft 13. In such a valve operating device, the profile of the cam surface 13a and 13b is so formed as to retard an operating speed (ramp speed) of the intake valves 6 and the exhaust valve 7 at an initial stage of valve opening and a final stage of valve closing, respectively. Further, in a valve overlap period of the intake valves 6 and the exhaust valve 7, the operating speed of the exhaust valve 7 at the final stage of valve closing is set to greater than the ramp speed of the intake valves 6 at the initial stage of valve opening. Accordingly, a silent valve operation may be obtained.
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公开(公告)号：JP2009243514A
公开(公告)日：2009-10-22
申请号：JP2008088181
申请日：2008-03-28
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： TERAOKA YOICHI , KOMORI MASARU , KAWAMURA SHUICHI , USUDA KOHEI , MITSUYOSHI TAKUO , INAGAKI AKINA
Abstract: PROBLEM TO BE SOLVED: To reduce the drivers' sense of discomfort by smooth changes of vehicle deceleration power at the time of lock-up cancellation. SOLUTION: The control device for an automatic transmission comprises a hydraulic power transmission with a lock-up clutch; a lock-up clutch controller 21 which releases the lock-up clutch under a prescribed release condition after engaged with the lock-up clutch at the time of deceleration; and a quasi-interlocking controller 23 which generates quasi-interlocking by adding a prescribed torque capacity to a frictional engaging element except the prescribed frictional engaging element which forms a shift at the restart of fuel supply. The quasi-interlocking is also generated in synchronism with the reversion of the fuel cut. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：通过在锁定取消时车辆减速功率的平滑变化来减少驾驶员的不适感。 解决方案：用于自动变速器的控制装置包括具有锁止离合器的液压动力传动装置; 锁止离合器控制器21，其在减速时与锁止离合器接合后，在规定的释放条件下释放锁止离合器; 以及准互锁控制器23，其通过将规定的转矩容量加到摩擦接合元件上而产生准互锁，所述摩擦接合元件除了在重新启动燃料供给时形成换档的规定的摩擦接合元件之外。 准互锁也是与燃料切断的反转同步产生的。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2009236235A
公开(公告)日：2009-10-15
申请号：JP2008084025
申请日：2008-03-27
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： KOMORI MASARU , KAWAMURA SHUICHI , USUDA KOHEI , MITSUYOSHI TAKUO , TERAOKA YOICHI , INAGAKI AKINA
IPC: F16H61/12 , F16H59/42 , F16H59/54 , F16H59/66 , F16H61/02 , F16H61/14 , F16H61/68 , F16H61/684 , F16H61/686
CPC classification number: F16H3/66
Abstract: PROBLEM TO BE SOLVED: To contribute to improvement in fuel consumption by delaying switching from a lock-up state to a lock-up off state while avoiding engine stall when a vehicle during lock-up is rapidly decelerated. SOLUTION: This control device for an automatic transmission includes a hydraulic transmission with a lock-up clutch, and a lock-up control means (a lock-up clutch control section 27) for locking up during deceleration. When predetermined operation conditions such as sudden brake operation are satisfied during lock-up by an operation condition determination means 21, the lock-up clutch control section 27 performs lock-up off control for disengaging the lock-up clutch. In this case, a frictional engagement element release control means (a gear shift clutch control section 28) controls to release the frictional engagement element in engagement operation. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：通过延迟从锁定状态切换到锁定关闭状态来有助于燃料消耗的改善，同时在锁定期间车辆快速减速时避免发动机失速。 解决方案：用于自动变速器的该控制装置包括具有锁止离合器的液压传动装置和用于在减速期间锁定的锁定控制装置（锁止离合器控制部分27）。 当由操作条件确定装置21锁定时，当预定的操作条件如突然制动操作被满足时，锁止离合器控制部分27执行锁定关闭控制以使解锁离合器脱离。 在这种情况下，摩擦接合元件释放控制装置（变速离合器控制部28）控制以在接合操作中释放摩擦接合元件。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JPH08254256A
公开(公告)日：1996-10-01
申请号：JP5947095
申请日：1995-03-17
Applicant: MAZDA MOTOR
Inventor： HIRATA TAKANORI , SAKA TOKIARI , KAWAMURA SHUICHI , AKAGI SHINSUKE , FUJITA KIKUO
Abstract: PURPOSE: To design a torque converter having a simple configuration and the optimum shape speedily and properly. CONSTITUTION: After a design model of a torque converter which uses a coordinate at a vertex of a polygon in contact with a center line of a blade face as design variable is formed by a design model preparation means 2, a spline curve which is extended along the polygon is formed by a spline model preparation means 3, and a calculation model is formed by a calculation model preparation means 4 based on the spline curve. Then, design variables are calculated by a torque converter characteristics calculating means 5, a performance evaluation value calculating means 6, an object function calculating means 7, and a design variable calculating means 8 based on the calculation model, and blade shape of the torque converter is designed based on the results of calculation.
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Patent Agency Ranking
公开(公告)号：JPH06207658A
公开(公告)日：1994-07-26
申请号：JP17676891
申请日：1991-07-17
Applicant: MAZDA MOTOR
Inventor： MORISHIGE TOMOTOSHI , KAWAMURA SHUICHI , SAWAZAKI TOMOO
Abstract: PURPOSE:To satisfy the convergence to a desired line pressure by feed-back control even though the corresponding characteristic between the control value and the line pressure is not linear, by satisfactorily carrying out feed-back control for the line pressure of a hydraulically operated transmission. CONSTITUTION:A hydraulic control device for a hydraulically controlled transmission is composed of a feed-back control value computing means for computing a duty feedback control value in accordance with a difference between an actual feedback control value and a desired line pressure, and a compensating means 74 for compensating the feed back value in accordance with the desired line pressure so as to regulate variation in line pressure caused by feed-back control.
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公开(公告)号：JPH05248518A
公开(公告)日：1993-09-24
申请号：JP32044791
申请日：1991-12-04
Applicant: MAZDA MOTOR
Inventor： MORI YUJI , KAWAMURA SHUICHI
IPC: F16H57/021 , F16H57/028 , F16H57/031 , F16H57/035 , F16H57/02
Abstract: PURPOSE:To reduce gear noise from speed reduction gear for reducing and transmitting the speed of rotation of an output shaft of a transmission contained in a casing comprising a speed reduction gear housing and a joint housing connected oppositely to each other. CONSTITUTION:A bearing cover 50 for supporting one end of a speed reduction gear shaft is provided separately from a speed change mechanism housing, and a projected edge 53 of the bearing cover 50 is positioned and installed by close faucet fitting to an annular recess 55 of a joint housing 47 for supporting the other end of the speed reduction gear shaft. Also an outer periphery 53a of the projected edge 53 of the bearing cover 50, an inner surface 55a of the annular recess 55 of the joint housing 47 to which the projected edge 53 is faucet-fitted closely, an inner surface 51a of a bearing support 51 of the bearing cover 50, and an internal surface 54a of a bearing support 54 of the joint housing 47 are formed by simultaneous working.
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公开(公告)号：JPH0579550A
公开(公告)日：1993-03-30
申请号：JP24339391
申请日：1991-09-24
Applicant: MAZDA MOTOR
Inventor： MORISHIGE TOMOTOSHI , KAWAMURA SHUICHI , SAWAZAKI TOMOO
Abstract: PURPOSE:To stabilize feedback control of pulsation particularly at the time of high rotation where the pulsation of a hydraulic detection signal is large by effectively carrying out feedback control of the line pressure of a hydraulically operated transmission. CONSTITUTION:A feedback control means 71 for outputting a control signal to a pressure adjustment means so that a line pressure reaches an aimed level, and thus for carrying out feedback control, is provided, while a control amount changing ratio alteration means 72 for reducing the change ratio of feedback control amount output to the change in a hydraulic detection signal as the engine rotational number is increased, is also provided.
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公开(公告)号：JPH0522045B2
公开(公告)日：1993-03-26
申请号：JP13857884
申请日：1984-07-04
Applicant: MAZDA MOTOR
Inventor： IKEDA MICHINOBU , KAWAMURA SHUICHI , KANEDA YOSHIHISA
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公开(公告)号：JPH0552256A
公开(公告)日：1993-03-02
申请号：JP20819691
申请日：1991-08-20
Applicant: MAZDA MOTOR
Inventor： MORISHIGE TOMOTOSHI , KAWAMURA SHUICHI , SAWAZAKI TOMOO
Abstract: PURPOSE:To properly adjust the delay of the line pressure reduction by delaying the control for lowering the line pressure accompanied with the reduction of the engine load, in particular so that the control corresponds to the delay of the reduction of the transmission torque which is varied according to the torque variation quantity or the speed change ratio, in a hydraulic operation type speed change gear. CONSTITUTION:A hydraulic controller is equipped with a hydraulic control means 81 for controlling the line pressure according to the operation state, delaying means 82 for delaying the line pressure reduction when the control for lowering the line pressure is carried out, and a delay varying means 83 for varying the delay quantity of the line pressure reduction according to at least one between the input torque variation quantity and the speed change ratio of the speed change mechanism.
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