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51. 发明授权

US4513640A Transmission shift control 失效
标题翻译：变速箱换档控制
公开(公告)号：US4513640A
公开(公告)日：1985-04-30
申请号：US503063
申请日：1983-06-10
申请人： Paul D. Stevenson
发明人： Paul D. Stevenson
IPC分类号： F16H59/10 , F16H59/44 , F16H61/02 , B60K41/16
CPC分类号： F16H61/0267 , F16H59/10 , F16H59/44 , Y10T477/6936
摘要： A shift control for a four-speed automatic transmission has a hydraulic pump for supplying pressurized fluid to the control valves including a manual valve, a 1-2 shift valve and a throttle valve. The manual valve directs fluid to a low pressure regulator valve during automatic four-speed drive operation and to a governor valve during all forward drive operations. The 1-2 shift valve responds to throttle valve pressure and the higher of governor pressure or the output of the low pressure regulator valve during automatic four-speed drive operation, whereby on part-throttle acceleration, the 1-2 shift valve is upshifted by the output of the low pressure regulator valve so that a second gear start for the vehicle is provided. In full throttle acceleration, the transmission starts in first gear due to the increased throttle pressure bias to provide better vehicle performance.
摘要翻译：用于四速自动变速器的变速控制装置具有用于向包括手动阀，1-2换档阀和节流阀的控制阀供给加压流体的液压泵。手动阀在自动四速驱动操作期间将流体引导到低压调节阀，并在所有正向驱动操作期间将调节阀引导至调速阀。在自动四速驱动操作期间，1-2换档阀响应节气门压力和调速器压力或低压调节阀的输出，由此在部分节气门加速下，1-2换档阀被升档提供低压调节阀的输出，从而提供用于车辆的第二档开始。在全油门加速度下，由于增加的节气门压力偏置，变速箱从第一档开始，以提供更好的车辆性能。

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