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    • 1. 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。