×

Combination cylinder state and transmission gear control systems and methods

  • US 9,599,047 B2
  • Filed: 11/20/2014
  • Issued: 03/21/2017
  • Est. Priority Date: 11/20/2014
  • Status: Active Grant
First Claim
Patent Images

1. A control system of a vehicle, comprising:

  • a firing module that determines a target number of activated cylinders of an engine based on a torque request and a present gear ratio of a transmission;

    a combination identification module that, based on the torque request, identifies a combination including a possible number of activated cylinders and a possible transmission gear ratio, wherein at least one of;

    the possible number of activated cylinders is different than the target number of activated cylinders; and

    the possible transmission gear ratio is different than the present gear ratio of the transmission;

    a fueling estimation module that determines a first fuel consumption for the target number of activated cylinders and the present gear ratio and that determines a second fuel consumption for the possible number of activated cylinders and the possible transmission gear ratio;

    a transitioning module that, when the second fuel consumption is less than the first fuel consumption, selectively;

    transitions the target number of activated cylinders to the possible number of activated cylinders; and

    transitions a target gear ratio of the transmission to the possible transmission gear ratio; and

    an activation/deactivation module that controls cylinder activation and deactivation based on the target number of activated cylinders.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×