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Intake port pressure prediction for cylinder activation and deactivation control systems

  • US 9,222,427 B2
  • Filed: 03/13/2013
  • Issued: 12/29/2015
  • Est. Priority Date: 09/10/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a parameter module that determines at least one of a position of a throttle and a load of an engine, wherein the engine comprises a plurality of cylinders;

    a cylinder status module that generates a status signal indicating an activation status for each of the plurality of cylinders, wherein the cylinder status module determines whether one or more of the plurality of cylinders are deactivated;

    a first pressure prediction module that, when all of the plurality of cylinders are activated, predicts first intake port pressures for the plurality of cylinders according to a first model and based on the at least one of the position of the throttle and the load of the engine;

    a second pressure prediction module that, when one or more of the plurality of cylinders is deactivated, predicts second intake port pressures for the deactivated cylinders according to a second model and based on the status signal and the at least one of the position of the throttle and the load of the engine; and

    a fuel control module configured to adjust fuel to or torque output of the engine based on the first intake port pressure and the second intake port pressure.

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