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Circuit configuration and method for generating a control signal for an engine control unit designed to control fuel injectors

  • US 7,305,970 B2
  • Filed: 01/14/2005
  • Issued: 12/11/2007
  • Est. Priority Date: 01/26/2004
  • Status: Expired due to Fees
First Claim
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1. A circuit configuration for generating a control signal for an engine control unit controlling at least one fuel injector of an internal combustion engine, wherein operating parameters of at least one of the internal combustion engine and the fuel injector are used for generating a modification signal input to the circuit configuration for an operational variation of a course of the control signal, the circuit configuration comprising:

  • a counter device connected to receive a predefined clock signal for providing a time-dependent digital counter signal;

    a memory device connected to receive the digital counter signal, said memory device being configuration to store a series of digital control signal values and to successively issue individual control signal values from the series of control signal values in dependence on the counter signal; and

    a digital-to-analog converter for converting the digital control signal values issued from said memory device into analog control signals for the engine control unit.

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