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    • 1. 发明授权
    • Method and apparatus for speed change control of an automotive automatic
transmission
    • 汽车自动变速器变速控制方法和装置
    • US5435796A
    • 1995-07-25
    • US258711
    • 1994-06-13
    • Kenjiro FujitaKatsutoshi UsukiKatsuhiro Hatta
    • Kenjiro FujitaKatsutoshi UsukiKatsuhiro Hatta
    • F16H59/38F16H61/00F16H61/02F16H61/06F16H61/08
    • F16H61/061F16H2059/385F16H2059/425F16H2061/0078F16H2061/0255Y10T477/692Y10T477/6937Y10T477/69383Y10T477/69387
    • During downshift operation of an automotive automatic transmission in which a lower-speed clutch for establishing a lower-speed gear is engaged while higher-speed clutch, which has established a higher-speed gear, is disengaged, to increase the turbine rotational speed Nt toward a synchronous rotation speed Ntj associated with the lower-speed gear, speed change control is carried out according to the same control method regardless of whether the engine is in a power-on or power-off state. A target change rate (Nir)' of turbine rotational speed associated with the higher-speed clutch and a target change rate (Nia)' of turbine rotational speed associated with the lower-speed clutch are set, and a change rate (Nia)' of the turbine rotational speed is detected. The transmission torque through the higher-speed clutch is controlled in a feedback manner such that the detected change rate (Nt)' coincides with the change rate (Nir)'. Further the transmission torque through the lower-speed clutch is feedback-controlled such that the change rate (Nt)' coincides with the change rate (Nia)', thereby carrying out downshift.
    • 在用于建立低速齿轮的低速离合器接合的汽车自动变速器的降档操作中,建立了更高速齿轮的高速离合器被分离,以将涡轮转速Nt朝向 与低速档相关联的同步转速Ntj根据相同的控制方法执行速度变化控制,而不管发动机是否处于通电或断电状态。 设定与高速离合器相关联的涡轮转速的目标变化率(Nir)和与低速离合器相关联的涡轮转速的目标变化率(Nia),变化率(Nia) 的涡轮转速。 通过高速离合器的传递扭矩以反馈方式进行控制,使得检测的变化率(Nt)“与变化率(Nir)”一致。 此外,通过低速离合器的传递扭矩被反馈控制,使得变化率(Nt)“与变化率(Nia)”一致,从而进行降档。
    • 2. 发明授权
    • Method and apparatus for speed change control of an automatic
transmission
    • 自动变速箱变速控制方法及装置
    • US5445577A
    • 1995-08-29
    • US45714
    • 1993-04-14
    • Kenjiro FujitaKatsutoshi UsukiKatsuhiro Hatta
    • Kenjiro FujitaKatsutoshi UsukiKatsuhiro Hatta
    • F16H59/38F16H61/00F16H61/02F16H61/06F16H61/08F16H59/48
    • F16H61/061F16H2059/385F16H2059/425F16H2061/0078F16H2061/0255Y10T477/692Y10T477/6937Y10T477/69383Y10T477/69387
    • During downshift operation of an automotive automatic transmission in which a lower-speed clutch for establishing a lower-speed gear is engaged while a higher-speed clutch, which has established a higher-speed gear, is disengaged, to increase the turbine rotational speed Nt toward a synchronous rotation speed Ntj associated with the lower-speed gear, speed change control is carried out according to the same control method regardless of whether the engine is in a power-on or power-off state. A target change rate (Nir)' of turbine rotational speed associated with the higher-speed clutch and a target change rate (Nia)' of turbine rotational speed associated with the lower-speed clutch are set, and a change rate (Nt)' of the turbine rotational speed is detected. The transmission torque through the higher-speed clutch is controlled in a feedback manner such that the detected change rate (Nt)' coincides with the change rate (Nir)', and also the transmission torque through the lower-speed clutch is feedback-controlled such that the change rate (Nt)' coincides with the change rate (Nia)', thereby carrying out downshift.
    • 在用于建立较低速齿轮的较低速离合器接合的汽车自动变速器的降档操作中,建立了较高速档的高速离合器被分离,以提高涡轮转速Nt 朝向与低速档相关联的同步转速Ntj,根据相同的控制方法执行速度变化控制,而不管发动机是否处于通电或断电状态。 设定与高速离合器相关联的涡轮转速的目标变化率(Nir)和与低速离合器相关联的涡轮转速的目标变化率(Nia),变化率(Nt) 的涡轮转速。 通过高速离合器的传递扭矩以反馈方式进行控制,使得检测的变化率(Nt)与变化率(Nir)一致,并且通过低速离合器的传递转矩也被反馈控制 使得变化率(Nt)与变化率(Nia)一致,从而进行降档。
    • 4. 发明授权
    • Method and apparatus for speed change control of an automotive automatic
transmission
    • 汽车自动变速器变速控制方法和装置
    • US5443432A
    • 1995-08-22
    • US257907
    • 1994-06-13
    • Kenjiro FujitaKatsutoshi UsukiKatsuhiro Hatta
    • Kenjiro FujitaKatsutoshi UsukiKatsuhiro Hatta
    • F16H59/38F16H61/00F16H61/02F16H61/06F16H61/08
    • F16H61/061F16H2059/385F16H2059/425F16H2061/0078F16H2061/0255Y10T477/692Y10T477/6937Y10T477/69383Y10T477/69387
    • During downshift operation of an automotive automatic transmission in which a lower-speed clutch for establishing a lower-speed gear is engaged while a higher-speed clutch, which has established a higher-speed gear, is disengaged, to increase the turbine rotational speed Nt toward a synchronous rotation speed Ntj associated with the lower-speed gear, speed change control is carried out according to the same control method regardless of whether the engine is in a power-on or power-off state. A target change rate (Nir)' of turbine rotational speed associated with the higher-speed clutch and a target change rate (Nia)' of turbine rotational speed associated with the lower-speed clutch are set, and a change rate (Nt)' of the turbine rotational speed is detected. The transmission torque through the higher-speed clutch is controlled in a feedback manner such that the detected change rate (Nt)' coincides with the change rate (Nir)'. Further, the transmission torque through the lower-speed clutch is feedback-controlled such that the change rate (Nt)' coincides with the change rate (Nia)', thereby carrying out downshift.
    • 在用于建立较低速齿轮的较低速离合器接合的汽车自动变速器的降档操作中,建立了较高速档的高速离合器被分离,以提高涡轮转速Nt 朝向与低速档相关联的同步转速Ntj,根据相同的控制方法执行速度变化控制,而不管发动机是否处于通电或断电状态。 设定与高速离合器相关联的涡轮转速的目标变化率(Nir)和与低速离合器相关联的涡轮转速的目标变化率(Nia),变化率(Nt) 的涡轮转速。 通过高速离合器的传递扭矩以反馈方式进行控制,使得检测的变化率(Nt)“与变化率(Nir)”一致。 此外,通过低速离合器的传递转矩被反馈控制,使得变化率(Nt)与变化率(Nia)一致,从而进行降档。
    • 5. 发明授权
    • Shift control method for an automatic transmission
    • 自动变速器的换档控制方法
    • US5882276A
    • 1999-03-16
    • US776932
    • 1997-02-11
    • Katsutoshi UsukiKenjiro FujitaKatsuhiro Hatta
    • Katsutoshi UsukiKenjiro FujitaKatsuhiro Hatta
    • F16H61/06F16H59/38F16H61/00F16H61/04F16H61/08F16H59/48
    • F16H61/08F16H2059/385F16H2059/425F16H2061/0087F16H2061/0444Y10T477/692Y10T477/69383
    • A shift control method for an automotive automatic transmission is provided, which reduces a shift shock particularly at the time of a skip down-shift, and shortens a required shifting time period. An electronic control unit of a shift control apparatus releases the engagement of a clutch of a subsidiary transmission mechanism and engages a one-way clutch so as to establish a gear position not used in the normal speed change when a shift command from the fifth shift position to the third shift position is issued, gradually decreasing a valve opening duty ratio of an electromagnetic valve associated with a brake of a main transmission mechanism from an initial value D.sub.HLi before this gear position is established, determines an average turbine rotation speed changing rate dD.sub.TAVE /dt from the detected turbine rotation speed (S203), and learning correction of the initial value D.sub.HLi is made if the changing rate deviates from a target range (S204-S208).
    • PCT No.PCT / JP96 / 01593 Sec。 371日期1997年2月11日 102(e)1997年2月11日PCT PCT 1996年6月12日PCT公布。 公开号WO96 / 41978 日期:1996年12月27日提供了一种用于汽车自动变速器的变速控制方法,其特别是在跳下降时,减小了换档冲击,并缩短了所需的换档时间。 变速控制装置的电子控制单元释放辅助传动机构的离合器的接合,并接合单向离合器,以便当从第五档位移动命令时建立不用于正常变速的档位 到达第三档位置时,在建立该变速档位之前,将与主变速机构的制动器相关联的电磁阀的开阀占空比从初始值DHLi逐渐降低,确定平均涡轮转速变化率dDTAVE / (S203),并且如果变化率偏离目标范围,则进行初始值DHLi的学习校正(S204〜S208)。
    • 6. 发明授权
    • Speed change control apparatus for an automatic transmission
    • 用于自动变速器的变速控制装置
    • US5743826A
    • 1998-04-28
    • US588334
    • 1996-01-18
    • Katsutoshi UsukiKenjiro FujitaKatsuhiro Hatta
    • Katsutoshi UsukiKenjiro FujitaKatsuhiro Hatta
    • F16H59/36F16H59/38F16H59/42F16H59/72F16H61/00F16H61/02F16H61/04F16H61/06F16H61/08
    • F16H61/08F16H2059/385F16H2061/0087F16H2061/0255F16H2061/0485F16H2061/0488F16H59/36F16H59/42F16H59/72F16H61/061Y10T477/653Y10T477/692Y10T477/6937Y10T477/69383
    • A speed change control apparatus for an automatic transmission includes a transmission control unit for controlling gear-changing. The control unit discriminates a fluid temperature/rotational speed zone based on the hydraulic fluid temperature and the engine speed at the start of gear-changing, and detects a time period from the end of dead-stroke elimination of an engagement-side hydraulic clutch to the start of actual gear-changing. In the case that a condition for executing learning correction is satisfied and if a time period from the end of the dead-stroke elimination to the start of the actual gear-changing is longer than an upper limit, the control unit increases a learning-correction time with which a dead-stroke-elimination time for the discriminated temperature/speed zone is calculated. The learning-correction time is decreased if such a time period is shorter than a lower limit. By carrying out the learning correction for various temperature/speed, occurrences of degraded shift response and shift shocks resulting from the presence of individual difference of the automatic transmission and an increase or decrease in the engine speed or fluid temperature can be prevented.
    • 用于自动变速器的变速控制装置包括用于控制变速的变速器控制单元。 控制单元基于变速开始时的液压流体温度和发动机转速来判别流体温度/转速区域,并且检测从接合侧液压离合器的死路行程消除结束时开始的时间 实际换档开始。 在满足用于执行学习校正的条件的情况下,如果从死区行程消除结束到实际变速开始的时间段长于上限,则控制单元增加学习校正 计算鉴别的温度/速度区域的死冲程消除时间的时间。 如果这样的时间段短于下限,则学习校正时间减少。 通过进行各种温度/速度的学习校正,可以防止由于自动变速器的个体差异的存在和发动机转速或液体温度的增加或减少而导致的劣化换档响应和换档冲击的发生。
    • 7. 发明授权
    • Speed change control method for an automatic transmission
    • 自动变速箱变速控制方法
    • US5624351A
    • 1997-04-29
    • US454178
    • 1995-06-22
    • Kenjiro FujitaKatsuhiro HattaKatsutoshi Usuki
    • Kenjiro FujitaKatsuhiro HattaKatsutoshi Usuki
    • F16H61/00F16H59/14F16H59/20F16H59/24F16H59/40F16H59/42F16H61/02F16H61/04F16H61/08
    • F16H61/0437F16H61/0213F16H2059/183F16H2061/0444F16H2306/24F16H59/141F16H59/20F16H59/24F16H59/40F16H59/42F16H61/08F16H61/686Y10T477/693637Y10T477/693754
    • A speed change control method for an automatic transmission, which can achieve a smooth skip downshifting even when a driver depresses an accelerator pedal slowly in kickdown. An electronic control unit 6 calculates, at the time when a predetermined time period elapses from the time when a downshifting command from a fourth speed to a third speed is outputted, a difference between the throttle valve opening degree .theta..sub.t1 at that time and the throttle valve opening degree .theta..sub.ts at the time when the downshifting command is outputted, and a change rate (.dwnarw..sub.t1)' of the throttle valve opening degree at the time when the predetermined time period elapses. If the calculated difference is larger than the threshold value .DELTA..theta. and the calculated change rate is higher than the threshold value .DELTA.(.theta.)' (S10, S11), the electronic control unit 6 outputs a command for canceling the command for downshifting from the fourth speed to the third speed, which has already been outputted (S12), and outputs a command for downshifting from the fourth speed to a second speed (S13).
    • PCT No.PCT / JP94 / 01781 Sec。 371日期:1995年6月22日 102(e)日期1995年6月22日PCT 1994年10月24日PCT公布。 公开号WO95 / 12078 日期1995年5月4日用于自动变速器的变速控制方法,即使当驾驶员在降档中缓慢地下压加速踏板时,也能够实现平滑的跳跃降档。 电子控制单元6计算从从第四速度降档到第三速度的降档指令输出之间经过了预定时间段时,此时的节气门开度θt1与节流阀之间的差 输出降档指令时的阀开度θts以及经过了规定时间时的节气门开度的变化率(& darr&t1)。 如果计算出的差值大于阈值DELTAθ并且计算出的变化率高于阈值DELTA(θ)'(S10,S11),则电子控制单元6输出用于取消用于降档的命令 已经输出的第四速度到第三速度(S12),并且输出用于从第四速度降档到第二速度的命令(S13)。
    • 9. 发明授权
    • Shift control method for an automatic transmission of an automotive
vehicle
    • 用于汽车自动变速器的换档控制方法
    • US5301572A
    • 1994-04-12
    • US16192
    • 1993-02-11
    • Yuichi TanakaYasuhiro NakajimaToshitaka NaruseKatsuhiro Hatta
    • Yuichi TanakaYasuhiro NakajimaToshitaka NaruseKatsuhiro Hatta
    • F16H59/44F16H59/48F16H59/70F16H59/72F16H61/00F16H61/02F16H61/04F16H61/06F16H61/08
    • F16H61/061F16H2061/0087F16H2061/0255F16H2061/0485F16H2061/0488F16H2312/02F16H59/44F16H59/48F16H59/70F16H59/72F16H61/0021F16H61/08
    • A shift control method for an automatic transmission of an automotive vehicle comprises a preliminary stage which is executed for eliminating the play in mechanism of a low/reverse brake of the automatic transmission at a shifting, particularly at a shifting of the transmission from the neutral position to a running position when the vehicle is at rest, and an engagement stage which is executed subsequently to the preliminary stage for operating the brake substantially. In the preliminary and engagement stages, the fluid pressure supplied to the brake is controlled in accordance with the precontrol pattern and the main control pattern, respectively. The shift control method further comprises a step of correcting a factor defining the precontrol pattern such that the time required from the start of the engagement stage to the start of a substantial shifting of the automatic transmission coincides with an ideal reference time, and a step of correcting the initial value of the fluid pressure supplied to the engaging element at the start of the main control pattern such that the rate of change in the rotational speed of the input shaft of the transmission during the period from the start of the substantial shifting to the end of same coincides with an ideal reference rate.
    • 用于机动车辆的自动变速器的变速控制方法包括:执行用于消除在变速时自动变速器的低/反制动的机构的起动的预备阶段,特别是在变速器从中立位置 在车辆静止时到达行驶位置,以及接合阶段,其基本上在用于操作制动器的预备阶段之后执行。 在预备和接合阶段,分别根据预控模式和主控制模式来控制供给制动器的流体压力。 变速控制方法还包括校正限定预控模式的因子的步骤,使得从接合阶段开始到自动变速器的实际变速开始所需的时间与理想的参考时间一致,并且步骤 校正在主控制模式开始时供给到接合元件的流体压力的初始值,使得在从实质变速开始到期间的变速器的输入轴的转速的变化率 相同的结尾与理想的参考速率一致。