METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE HAVING MULTIPLE COMBUSTION CHAMBERS, AND INTERNAL COMBUSTION ENGINE HAVING MULTIPLE COMBUSTION CHAMBERS
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Accused Products
Abstract
In a method for operating an internal combustion engine having multiple combustion chambers and an injector for injecting fuel associated with at least one combustion chamber, an excess air factor which is individual for each combustion chamber is adjusted for the at least one combustion chamber, and a torque which is individual for each combustion chamber is ascertained for the at least one combustion chamber. A control period of the injector is adapted for the injector by ascertaining a valve opening period in such a way that tolerances of the injector are at least essentially compensated for with respect to a relationship between the control period and the valve opening period.
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Citations
18 Claims
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1-10. -10. (canceled)
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11. A method for operating an internal combustion engine having multiple combustion chambers, wherein an injector for injecting fuel is associated with at least one combustion chamber, the method comprising:
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adjusting an excess air factor for at least one combustion chamber, wherein each combustion chamber has an associated individual excess air factor; adapting, with the aid of an adaptation operation, a control period of the injector by one of detecting or ascertaining a valve opening period of the injector in such a way tolerances of the injector are at least essentially compensated for with respect to a relationship between the control period and the valve opening period; determining whether the adapting of the control period of the injector has reached a steady state; and ascertaining a torque for the at least one combustion chamber, wherein each combustion chamber has an associated individual torque, wherein the individual torque for the at least one combustion chamber is not ascertained until the adapting of the control period of the injector has been determined to have reached a steady state. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An internal combustion engine system, comprising:
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multiple combustion chambers; an injector for injecting a fuel quantity into at least one combustion chamber; and a control unit including; means for adjusting an excess air factor for at least one combustion chamber, wherein each combustion chamber has an associated individual excess air factor; means for adapting, with the aid of an adaptation operation, a control period of the injector by one of detecting or ascertaining a valve opening period of the injector in such a way tolerances of the injector are at least essentially compensated for with respect to a relationship between the control period and the valve opening period; means for determining whether the adapting of the control period of the injector has reached a steady state; and means for ascertaining a torque for the at least one combustion chamber, wherein each combustion chamber has an associated individual torque, wherein the individual torque for the at least one combustion chamber is not ascertained until the adapting of the control period of the injector has been determined to have reached a steady state.
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Specification