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    • 1. 发明授权
    • Engine torque control during multiple speed changes of an automatic transmission
    • 自动变速器多速变速时的发动机转矩控制
    • US06254508B1
    • 2001-07-03
    • US09425190
    • 1999-10-25
    • Kouichi KojimaHiroshi TsutsuiMasao SaitouMasaaki NishidaYoshihisa Yamamoto
    • Kouichi KojimaHiroshi TsutsuiMasao SaitouMasaaki NishidaYoshihisa Yamamoto
    • B60K4104
    • B60W10/06B60W10/04B60W10/11B60W10/115B60W30/18B60W30/1819F16H61/061F16H63/502F16H2059/425F16H2059/6807F16H2306/24Y10T477/677
    • In a multiple speed-change operation for switching between an up-shift operation and a down-shift operation, engine torque control is adapted to an actual change in speed-change state, whereby an abrupt change in rotational speed of the input shaft is prevented. One embodiment relates to a speed-change operation from the second speed to the third speed, wherein the engagement-side hydraulic pressure B4 rises and the release-side hydraulic pressure B5 drops, the rotational speed NT of the input shaft changes from a second speed state toward a third speed state and the engine torque TE is reduced by a predetermined amount TCU. If a command to perform a speed-change operation from the third speed to the second speed is issued during the aforementioned speed-change operation from the second speed to the third speed, control of the hydraulic pressures is switched to the speed-change operation from the third speed to the second speed. If it is detected because of the hydraulic pressure control that the direction of the change &ohgr; in rotational speed of the input shaft has changed toward the second speed, it is determined that the speed-change operation has actually started. Then, the torque reduction operation is suspended, and the torque is gradually restored.
    • 在上变速操作和换档操作之间切换的多次变速操作中,发动机扭矩控制适应于变速状态的实际变化,从而防止输入轴的转速急剧变化 。 一个实施例涉及从第二速度到第三速度的变速操作,其中接合侧液压B4上升,释放侧液压B5下降,输入轴的转速NT从第二速度 状态朝向第三速度状态,并且发动机转矩TE减小预定量TCU。 如果在从第二速度到第三速度的上述变速操作期间发出执行从第三速度到第二速度的变速操作的命令,则将液压控制切换到速度变化操作 第三速到第二速。 如果由于液压控制检测到输入轴的转速的变化方向Ω的方向朝向第二速度变化,则确定变速操作已经实际开始。 然后,停止转矩降低操作,并且扭矩逐渐恢复。
    • 10. 发明授权
    • Control system for a single servo during multiple speed changes
    • 多个速度变化时单伺服控制系统
    • US5941795A
    • 1999-08-24
    • US833389
    • 1997-04-04
    • Saoto TsuchiyaMasaaki NishidaYoshihisa YamamotoHiroshi Tsutsui
    • Saoto TsuchiyaMasaaki NishidaYoshihisa YamamotoHiroshi Tsutsui
    • F16H61/08F16H59/68F16H61/06F16H61/04
    • F16H61/061F16H2059/6807F16H2306/24Y10T477/6937Y10T477/693754Y10T477/69383Y10T477/6939
    • The present invention prevents shift shock and reduces time required to execute the complete speed change operation in the case where a second speed change is commanded while a first speed change operation is still in progress. If a down-shift to a first speed stage is commanded during an up-shift operation from the first to the second speed, the hydraulic pressure in the second speed change operation is controlled in accordance with the state of the first speed change operation at the time of generation of the command for the second speed change. For example, if a down-shift to the first speed stage is commanded during the torque phase of an up-shift operation from first to second speeds, namely, before change in the rotational speed of the input shaft has started, only completion control of the down-shift operation is executed. On the other hand, if the down-shift to the first speed stage is commanded during the inertia phase of the up-shift operation, namely, after the speed change has been started, hydraulic control of the down-shift is started with the initial speed change control.
    • 本发明在第一变速操作仍在进行中,在第二变速指令的情况下,能够防止变速冲击,并减少执行完全变速操作所需的时间。 如果在从第一速度到第二速度的升档操作期间指令到第一速度档位的下降,则根据第二变速操作中的第一变速操作的状态来控制第二变速操作中的液压 生成第二速变化命令的时间。 例如,如果在从第一速度到第二速度的升档操作的扭矩阶段期间,即在输入轴的转速的变化已经开始之前指令到第一速度级的下降,则仅完成控制 执行降档操作。 另一方面,如果在升档操作的惯性阶段(即在变速开始之后)指令到第一速度级的下降,则下降的液压控制开始于初始 变速控制。