Method for executing tasks and system comprising a first and a second control device
AssigneeContinental Automotive GmbH
InventorsMartin Jehle, Wolfgang Moser, Peter Russe
Life of this patent
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Abstract
A system and a method for executing tasks for an internal combustion engine (14) has two control devices (1, 2), with the two control devices (1, 2) being provided in order to process the tasks independently of one another, with the first control device (1) having a first release signal and a first switchover signal, with the second control device having a second release signal and a second switchover signal, with, by exchanging the two release signals and the two switchover signals, it being defined that only one of the two control devices (1, 2) executes a defined task at the same time.
Claims20
A method for executing tasks for an internal combustion engine comprising two control devices each operable to process tasks independently of the other, the method comprising:
- adjusting operating parameters of the engine, wherein an adaptive adjustment is performed only by one of the two control devices at a time, wherein adjusting the operating parameters comprises:
- checking whether a first adaptive task is to be executed by the first control device;
- if the first adaptive task is to be executed, maintaining an active level for a first release signal associated with the first control device and an inactive level for a first switchover signal associated with the first control device during execution of the first adaptive task;
- upon completion of the first adaptive task, reducing the first release signal to the inactive level and increasing the first switchover signal to the active level;
- receiving the first release signal and the first switchover signal at the second control device;
- and
- interpreting the inactive level first release signal and the active level first switchover signal as permission to implement a second adaptive task at the second control device;
- wherein the two control devices cooperatively control respective engine actuators.
A system comprising:
- a first control device for executing tasks for an internal combustion engine,
- a second control device for executing tasks for the internal combustion engine;
- a signal path connecting the first and the second control device,
- the first control device having a first memory retaining a first release bit for a first release signal and a first switchover bit for a first switchover signal,
- the second control device having a second memory retaining a second release bit for a second release signal and a second switchover bit for a second switchover signal, and
- wherein the system is designed such that when adjusting operating parameters of the internal combustion engine, only one of the two control devices is executing an associated adaptive task at a time and the two control devices do not simultaneously execute defined adaptive tasks but instead define by way of exchanging the first and the second release signal and the first and the second switchover signal that only one control device can execute a defined adaptive task at the same time;
- wherein the first control device and the second control device cooperatively control respective actuators of the internal combustion engine.
Dependencies are inferred from the claim text.