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US 6,546,826 B2Granted
Control apparatus of an automated manual transmission
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorHosei Suzuki
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AssigneeFuji Jukogyo Kabushiki Kaisha
InventorHosei Suzuki
Estimating the term…
A control apparatus of an automated manual transmission has an input shaft provided with a plurality of drive gears, an output shaft provided with a plurality of driven gears engaged with the drive gears, and actuators for switching a transmission gear train to transmit a power from the input shaft to the output shaft. A hydraulic pressure system is provided with a control valve for regulating hydraulic pressure supplied to actuators, and an accumulator for saving working fluid and storing pressure energy. An electronic control unit determines that there occurs a trouble in the hydraulic pressure system when a rising rate of hydraulic pressure is lower than a predetermined value (S2, S3). Then, the electronic control unit switches a transmission gear train to the lowest speed gear range within a scope of no over-revolution of an engine through using pressure energy stored in the accumulator (S7, S8). Thereby, even when there occurs a malfunction in the hydraulic pressure system, a minimum drive ability can be ensured with a simple structure.
A control apparatus of an automated manual transmission having an input shaft provided with a plurality of drive gears, an output shaft provided with a plurality of driven gears engaged with the drive gears, and actuators for switching a transmission gear train to transmit a power from the input shaft to the output shaft, said actuator being hydraulically driven, comprising:
Dependencies are inferred from the claim text.