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Engine control system and method based on fuel quality

  • US 9,243,581 B2
  • Filed: 01/27/2014
  • Issued: 01/26/2016
  • Est. Priority Date: 09/24/2010
  • Status: Active Grant
First Claim
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1. An engine control unit (ECU) comprising:

  • one or more input(s) configured to receive an actual sulfur level in a fuel provided to an engine and receive a geographic location signal indicating the current geographic location of the engine;

    a processor coupled to the one or more inputs configured to;

    interpret the actual sulfur level and geographic location signal;

    determine whether the actual sulfur level exceeds a predetermined sulfur limit;

    determine a maximum emission level of an engine;

    determine whether an emission standard is regulated or unregulated;

    wherein a regulated emission standard corresponds to an emission limit in the current geographic location at or below than the maximum emission level of the engine, andwherein an unregulated emission standard corresponds to no emission regulation in the current geographic location or an emission limit in the current geographic location beyond the maximum emission level of the engine; and

    in response to an actual sulfur level exceeding the predetermined sulfur limit and an unregulated emission standard, produce an engine modification signal; and

    one or more output(s) coupled to the processor and configured to provide the engine modification signal.

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