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Diagnostic systems for cooling systems for internal combustion engines

  • US 7,918,129 B2
  • Filed: 10/03/2008
  • Issued: 04/05/2011
  • Est. Priority Date: 05/27/2008
  • Status: Expired due to Fees
First Claim
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1. A control system for an engine system comprising:

  • a temperature sensor that measures an outlet temperature of a gas at an outlet of a cooling system; and

    a diagnostic module that estimates a cooling fluid temperature, that determines a cooling performance based on a difference between the outlet temperature and the cooling fluid temperature, and that selectively diagnoses a fault in the cooling system based on the cooling performance and a predetermined threshold.

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