초록 ▼

Control device for a transmission unit comprising a clutch and a gear shift which are coupled respectively to a first and a second actuator unit in order to operate the actuation of the clutch and the selection and engagement/disengagement of the gears. The device comprises a transmission control ci

Control device for a transmission unit comprising a clutch and a gear shift which are coupled respectively to a first and a second actuator unit in order to operate the actuation of the clutch and the selection and engagement/disengagement of the gears. The device comprises a transmission control circuit in which a main microprocessor formulates control signals for the first and second actuator unit and an auxiliary microprocessor determines a state of malfunctioning of the main microprocessor in order to transfer the control of the transmission unit to the auxiliary microprocessor in the event of a fault.

대표청구항 ▼

[ We claim:] [1.] Electronic control device for a transmission unit comprising a clutch receiving mechanical power from an internal combustion engine and a gear shift input-connected to an output of said clutch to transfer mechanical power to the wheels of a vehicle, said transmission unit further c

[ We claim:] [1.] Electronic control device for a transmission unit comprising a clutch receiving mechanical power from an internal combustion engine and a gear shift input-connected to an output of said clutch to transfer mechanical power to the wheels of a vehicle, said transmission unit further comprising;a first actuator unit coupled to said clutch to actuate said clutch;a second actuator unit coupled to said gear shift to select and engage/disengage the gears of said gear shift;electronic control means supplying control signals to said first and second actuator units based upon information signals supplied to said electronic control means;said electronic control means comprising at least one main microprocessor to formulate said control signals;said electronic control means comprising auxiliary microprocessor means to determine a malfunction of said main microprocessor, control of said transmission unit being transferred to said auxiliary microprocessor means upon the malfunction of said main microprocessor;said auxiliary microprocessor means comprising first means of examination to determine the state of operation of said main microprocessor, said first means of examination selecting second means of examination if the determined state of operation corresponds to the malfunction of said main microprocessor;said second means of examination determining at least a first and a second working condition of the vehicle existing before detection of said malfunction; andsaid clutch being closed in said first working condition and said clutch being at least partially open in said second working condition said electronic control means controlling said first and second actuator units in a manner depending on whether said clutch is closed or at least partially open.