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    • 25. 发明授权
    • Adaptive transmission pressure control with run-through detection
    • 自适应传输压力控制与贯穿检测
    • US5289741A
    • 1994-03-01
    • US894982
    • 1992-06-08
    • William E. DebsRobert L. Moses
    • William E. DebsRobert L. Moses
    • F16H61/12F16H59/68F16H61/00F16H61/04F16H61/06B60K41/06
    • F16H61/0437F16H2059/6807F16H2061/0087F16H61/067Y10T477/693635
    • An improved adaptive line pressure control which detects the occurrence of run-through and overrides the normal adaptive pressure control in response to a detected run-through condition so that the line pressure during subsequent shifting is increased instead of decreased. A run-through condition is detected by periodically sampling the transmission speed ratio in the course of the inertia phase of an upshift from a lower speed ratio to an upper speed ratio, and determining the average ratio for the upshift. If the average ratio is within a reference amount of the normal value (ratio midpoint), the adaptive control is allowed to update the adaptive pressure value in relation to the difference between the measured shift time and a desired shift time. If the average ratio exceeds the normal value (midpoint) by more than the reference amount, a run-through is detected, and the adaptive pressure amount is increased regardless of the measured shift time.
    • 一种改进的自适应线路压力控制,其响应于检测到的穿越条件来检测穿越的发生并且超过正常的自适应压力控制,使得随后的移位期间的线路压力增加而不是减小。 通过在从较低速比到高速比的升档的惯性阶段期间周期性地对传动速度比进行采样,并且确定换高档的平均比例来检测跑步状态。 如果平均比例在正常值(比例中点)的参考量内,则允许自适应控制相对于测量的换档时间和期望的换档时间之间的差来更新自适应压力值。 如果平均比例超过正常值(中点)超过参考量,则检测到通过,并且自适应压力量不管测量的移动时间如何都增加。