METHOD FOR OPERATING DRIVE CONTROL UNITS IN A MOTOR VEHICLE, AND MOTOR VEHICLE
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Abstract
In a motor vehicle having two different drives, in particular an internal combustion engine and an electric drive, there are two control units for the respective drives and a leading control unit (Hybrid), which preferably controls the internal combustion engine and assigns torque to the individual drives when there are torque requests. Corresponding request signals are sent and implemented only if the existence of a certain situation (key inserted, “terminal 15”) is detected by an engine immobilizer control unit (EI master). In order for not too much time to pass due to the querying of the engine immobilizer control unit, the leading control unit informs the other control units that a query is sent so that the other control units can also send a query already.
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Citations
18 Claims
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1-6. -6. (canceled)
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7. A method for operating a plurality of drive control units respectively assigned to a plurality of drives of a motor vehicle, the method comprising:
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receiving at a master control unit, presettings relating to a total torque which is to be applied jointly by the plurality of drives of the motor vehicle, the master control unit acting as a hybrid control unit; performing an interrogation process by outputting an interrogation from the master control unit to an immobilizer control unit; when the interrogation is output to the immobilizer control unit, sending a signal from the master control unit to at least one slave drive control unit to communicate performance of the interrogation process, so that the at least one slave drive control unit can also transmit an interrogation to the immobilizer control unit; individually assigning, at the master control unit, drive torques respectively to the plurality of drives; and outputting at least one request signal from the master control unit only if the immobilizer control unit has returned an enable signal, each request signal being used to communicate one of the partial torques to a corresponding slave drive control unit so that the slave drive control unit can output a control signal to communicate drive torque information to the assigned drive only if the immobilizer control unit has returned an enable signal to the slave drive control unit. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A motor vehicle comprising:
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an internal combustion engine; a first drive control unit associated with the internal combustion engine, to transmit control signals to the internal combustion engine; an electric drive; a second drive control unit associated with the electric drive, to transmit control signals to the electric drive; and a master control unit to output an interrogation to an immobilizer control unit, to communicate the outputting of the interrogation to all the drive control units other than itself, to assign torque requests to the internal combustion engine and the electric drive, and to communicate the torque requests to all drive control units other than itself, if the immobilizer control unit HAS returned a predetermined response signal to the interrogation, wherein the master control unit is acts as a hybrid control unit. - View Dependent Claims (15, 16, 17, 18)
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Specification