专利名称：AUTOMATIC TRANSMISSION CONTROL
SYSTEM FOR AUTOMATIC TRANSMISSIONSON VEHICLES
发明人：WAKAMATSU H,JA,KITANO A,JA,KAWAI H,JA申请号：US3713355D申请日：19700724公开号：US3713355A公开日：19730130
摘要：An automatic transmission control system for automatic transmissions onvehicles, which comprises a vehicle speed detector to produce an output signal atfrequencies proportional to the vehicle speed, an AC-DC converter to produce an analogsignal by converting the output signal of the vehicle speed detector, an engine loaddetector to produce an output signal corresponding to the engine load, a gear shiftsignal generator circuit to generate a shifting signal by detecting a shifting point fromthe output signals of the AC-DC converter and the engine load detector, and a memorynormally producing an output signal in accordance with the gear shift signal from thegear shift signal generator circuit for shifting the gear position of the transmission gear-shifting mechanism. If the engine throttle valve is closed, the output signal of thememory is locked, irrespective of subsequent changes of the gear shift signal until thevehicle speed is reduced to a predetermined low value. A low speed detector producesan output signal when the vehicle speed is reduced to the predetermined low speed,thereby releasing the locked state of the memory.
申请人：NIPPONDENSO K K,JA
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