Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2007-03-13
2007-03-13
Kwon, John T. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S490000, C123S609000
Reexamination Certificate
active
10535643
ABSTRACT:
In a method and an apparatus for operating an injection system of an internal combustion engine, triggering of an injection actuator being performed on the basis of at least one state variable of the injection system, in order to enhance the quantitative accuracy with which fuel is metered provision is made that the at least one state variable is sensed and temporarily stored; the at least one injection actuator is triggered with a triggering pulse of definable pulse duration and definable initial pulse height; during the triggering of the at least one injection actuator, an injection detection is performed; the pulse height of the triggering pulse is incremented in definable steps, at the defined pulse duration, until an injection is detected; and when an injection is detected, the pulse height of the triggering pulse causing the injection is permanently stored as a function of the sensed state variable, and in future operation of the injection system is taken as the basis for triggering the at least one injection actuator.
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Rueger Johannes-Joerg
Schulz Udo
Kenyon & Kenyon LLP
Kwon John T.
Robert & Bosch GmbH
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