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CYLINDER PRESSURE MEASUREMENT SYSTEM AND METHOD

  • US 20110087419A1
  • Filed: 10/09/2009
  • Published: 04/14/2011
  • Est. Priority Date: 10/09/2009
  • Status: Active Grant
First Claim
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1. An engine control system comprising:

  • a piston movement modeling module that models movement of a piston within a corresponding cylinder based on angular change of an engine crankshaft;

    a cylinder volume determination module that determines a volume of the cylinder based on an angular position of the engine crankshaft and the modeled movement of the piston; and

    a cylinder pressure estimation module that estimates pressure in the cylinder based on the determined volume, an intake manifold absolute pressure (MAP), an intake valve timing, an exhaust valve timing, and an exhaust back pressure (EBP).

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