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6 条记录 (耗时 0.02 秒)

    Automatic transmission torque converter clutch control
    1.
    发明授权
    Automatic transmission torque converter clutch control 失效
    自动变速箱变矩器离合器控制

    公开(公告)号：US4953091A

    公开(公告)日：1990-08-28

    申请号：US261650

    申请日：1988-10-24

    申请人： Paul A. Baltusis ,  Thomas L. Greene ,  Bruce J. Palansky

    发明人： Paul A. Baltusis ,  Thomas L. Greene ,  Bruce J. Palansky

    IPC分类号： F16H59/46 ,  F16H61/08 ,  F16H61/14

    CPC分类号： F16H61/143 ,  F16H2059/467 ,  F16H61/08 ,  Y10T477/63525

    摘要： An electronic control system for operating a torque converter clutch during a transmission gearshift includes a vehicle speed sensor and engine speed sensor, a hydrodynamic torque converter located between the engine and the transmission, a solenoid-operated hydraulic valve, which engages and disengages the torque converter clutch in accordance with the energized and deenergized state of the solenoid in accordance with the logic of the control system. The converter clutch is locked while operating in the original gear ratio, then unlocks during the gearshift, and relocks after the upshift is completed. The speed ratio of the torque converter is rapidly determined in terms of the number of clock ticks occurring between pulses whose frequency is proportional to engine speed. The current speed ratio is determined during interrupts occurring at short intervals during a background pass.

    Automatic transmission electronic gearshift control having altitude corrected shift criteria
    6.
    发明授权
    Automatic transmission electronic gearshift control having altitude corrected shift criteria 失效
    具有高度校正换档标准的自动变速器电子换档控制

    公开(公告)号：US4943921A

    公开(公告)日：1990-07-24

    申请号：US261538

    申请日：1988-10-24

    申请人： Paul A. Baltusis ,  Thomas L. Greene ,  Bruce J. Palansky

    发明人： Paul A. Baltusis ,  Thomas L. Greene ,  Bruce J. Palansky

    IPC分类号： F16H59/62 ,  F16H61/00 ,  F16H61/02 ,  F16H61/14

    CPC分类号： F16H61/0213 ,  F16H2061/0096 ,  F16H59/62 ,  F16H61/14 ,  F16H61/686 ,  Y10T477/65 ,  Y10T477/6937

    摘要： An electronic control system for scheduling gearshifts in a four speed automatic transmission includes storing in electronic memory accessible to a microprocessor, six functions relating vehicle speed to throttle position, one function being related to each upshift and downshift. Gearshifts are made by probing computer memory with current values for throttle position and vehicle speed, and determining on the basis of the stored shift schedule whether an upshift or downshift is required. Upshift points are determined also on the basis of the maximum engine speed when a wide open throttle condition is detected. Ambient barometric pressure alters the vehicle speed and engine speed attained at high altitude in comparison to those speeds that result for the same throttle position at sea level. Therefore, shift points defined by the schedule on the basis of vehicle speed and throttle position, and shift points relates to wide open throttle conditions and engine speed, are corrected for altitude or barometric pressure changes from a reference barometric pressure at which the shift points are determined for the functions stored in computer memory.

    摘要翻译： 用于在四速自动变速器中调度换档的电子控制系统包括存储在微处理器可访问的电子存储器中，将车速与油门位置相关的六个功能，一个功能与每次升档和降档有关。 通过用计算机存储器探测节流位置和车速的当前值，并根据存储的换档计划来确定是否需要升档或降挡来进行换档。 当检测到大开口节流条件时，还基于最大发动机转速确定换档点。 与在海平面相同的节气门位置相比，环境气压改变了在高处获得的车速和发动机转速。 因此，根据车速和节气门位置以及换档点定义的换档点与广泛的油门条件和发动机转速有关，根据转速点的参考气压，对高度或大气压力的变化进行校正 确定存储在计算机内存中的功能。