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Method and apparatus for protecting an engine from overheating

  • US 5,555,871 A
  • Filed: 05/08/1995
  • Issued: 09/17/1996
  • Est. Priority Date: 05/08/1995
  • Status: Expired due to Term
First Claim
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1. An overheat protection system for an internal combustion engine having cylinders and a cylinder head, the cylinders being independently deactivatable, the overheat protection system comprising:

  • a cylinder head temperature sensor operably coupled to sense the temperature of the cylinder head; and

    a control system operably coupled to the cylinders and the cylinder head temperature sensor such that when the temperature of the cylinder head exceeds a maximum level, the control system deactivates at least one of the cylinders and rotates the deactivation of at least one of the engine cylinders such that no one cylinder is constantly fired thus providing engine cooling by drawing fresh air through the at least one deactivated cylinders.

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