Electronic governor for automotive automatic transmission专利检索-自动油门飞机类型专利检索查询-专利查询网

Electronic governor for automotive automatic transmission

阅读：945发布：2022-07-31

专利汇可以提供Electronic governor for automotive automatic transmission专利检索，专利查询，专利分析的服务。并且A control device for electronically controlling the gear shifts in an automotive automatic transmission in response to changes in the vehicle speed and in the displacement of the accelerator pedal. Signals are produced representing the changes at any given time in the vehicle speed and position of the accelerator pedal to raise the gear shifting point to higher vehicle side particularly when the vehicle is running on an ascent or descent or when the engine is operating at a low temperature.，下面是Electronic governor for automotive automatic transmission专利的具体信息内容。

权利要求

1. A control device for electrically controlling gear shifts of an automatic transmission of an automotive vehicle as a function of vehicle speed and displacement of an accelerator pedal, comprising: accelerator displacement detecting means for detecting displacement of the accelerator pedal to produce an accelerator displacement signal having a voltage substantially proportional to said displacement; kickdown means provided in said accelerator displacement means for producing a kickdown signal having a voltage stepwise changed from said accelerator displacement signal; switch means connected with said accelerator displacement detecting means for producing a high load signal having a voltage higher than said accelerator displacement signal when closed and for producing an anit-creep signal having a zero potential when being open while the vehicle stands still; switch means for selectively permitting therethrough said accelerator displacement signal, kickdown signal and anti-creep signal and for selectively permitting therethrough a low-hold signal having a constant voltage; vehicle speed detecting means for detecting vehicle speed to produce a vehicle speed signal having a voltage substantially proportional to said vehicle speed, said vehicle speed signal being of polarity opposite to that of said accelerator displacement signal and kickdown signal; at least one comparating means receptive of said vehicle speed signal and any of said accelerator displacement, kickdown, high load, anti-creep and low-hold signals selected for comparing the voltages of said vehicle speed and said any signal; at least onE corresponding driving circuit connected with said comparing means for being rendered conductive when the compared voltages exceed their threshold values; and at least one corresponding relay means for being actuated by said driving means when it is energized to produce at their terminals a plurality of speed signals having a constant voltage, said speed signals being delivered to an electric circuit of an automatic transmission to effect a gear shift in accordance with the speed signals produced.

2. A control device according to claim 1, further comprising at least one hysterisis feedback circuit for stepwise changing the voltage levels to be compared by said comparing means in response to the conductions of said driving circuits to produce a hysterisis between the upshift and downshift for the same gear shift.

3. A control device according to claim 1, further comprising a gate circuit for permitting said any signal to flow only toward said comparing means.

4. A control device according to claim 1, further comprising relay means for producing at its terminal the highest speed signal when actuated, a driving circuit for actuating the last-named relay means when rendered conductive, a logic circuit for rendering the last-named driving circuit only when said at least one driving circuit is kept inconductive, and a gate circuit for prohibiting said at least one driving circuit from being conductive.

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Electronic governor for automotive automatic transmission

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