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AIR MASS DETERMINATION FOR CYLINDER ACTIVATION AND DEACTIVATION CONTROL SYSTEMS

  • US 20140069374A1
  • Filed: 03/13/2013
  • Published: 03/13/2014
  • Est. Priority Date: 09/10/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a cylinder event module that determines an air-per-cylinder value for one of a cylinder intake event or a cylinder non-intake event of a current cylinder of an engine based on a mass air flow signal and an engine speed signal, wherein the engine includes a plurality of cylinders including the current cylinder;

    a status module that generates a status signal indicating whether the current cylinder is activated or deactivated;

    a deactivation module that, based on the status signal, determines a current accumulated air mass in an intake manifold of the enginefor air received by the intake manifold since a last cylinder intake event of an activated cylinder and prior to one or more cylinder non-intake events of one or more deactivated cylinders, andbased on a previous accumulated air mass in the intake manifold and the air-per-cylinder value; and

    an activation module that, based on the status signal, determines an air mass value for the current cylinder based on the air-per-cylinder value and the current accumulated air mass.

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