Method for operating drive control units in a motor vehicle, and motor vehicle
First Claim
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1. A method for operating a plurality of drive control units respectively assigned to a plurality of drives of a motor vehicle, the method comprising:
- 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 also transmits an interrogation to the immobilizer control unit;
individually assigning, at the master control unit, partial 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 at least one request signal being used to communicate one of the partial torques to a corresponding slave drive control unit so that the at least one slave drive control unit outputs a control signal to communicate drive torque information to the corresponding drive only if the immobilizer control unit has returned an enable signal to the at least one slave drive control unit.
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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.
10 Citations
15 Claims
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1. 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 also transmits an interrogation to the immobilizer control unit; individually assigning, at the master control unit, partial 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 at least one request signal being used to communicate one of the partial torques to a corresponding slave drive control unit so that the at least one slave drive control unit outputs a control signal to communicate drive torque information to the corresponding drive only if the immobilizer control unit has returned an enable signal to the at least one slave drive control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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 at least one of the first and second drive control units so that the at least one of the first and second drive control units transmits an interrogation to the immobilizer control unit, to assign torque requests to the internal combustion engine and the electric drive, and to communicate the torque requests to the at least one of the first and second drive control units, when the immobilizer control unit has returned a predetermined response signal to the interrogation, wherein the master control unit corresponds to a hybrid control unit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification
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Current AssigneeAudi AG (Volkswagen AG)
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Original AssigneeAudi AG (Volkswagen AG)
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InventorsGraf, Johann, Steinbrueck, Martin
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Primary Examiner(s)Trammell, James
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Assistant Examiner(s)TESTARDI, DAVID A
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Application NumberUS13/641,768Publication NumberTime in Patent Office966 DaysField of Search701/22, 701/48US Class Current701/22CPC Class CodesB60R 25/04 operating on the propulsion...B60W 10/06 including control of combus...B60W 10/08 including control of electr...B60W 20/00 Control systems specially a...B60W 2050/0006 Digital architecture hierarchyB60W 2540/043 Identity of occupantsB60W 50/0098 Details of control systems ...Y10S 903/902 Prime movers comprising ele...
