Patent ID: 9441550
Filing Date: 2016-09-13
CPC Classification: B60W,F02D

Claim Text:
1. An engine control system comprising: a selection module that selects a gear ratio for a transmission, a turbine speed for a torque converter, and a first torque request for an engine; a fueling determination module that determines a first fueling rate as a function of a first cylinder firing fraction, the first torque request, and an engine speed and that determines a second fueling rate as a function of a second cylinder firing fraction, the first torque request, and the engine speed; a mapping module that selects one of the first and second cylinder firing fractions based on a comparison of the first and second fueling rates and that stores the selected one of the first and second cylinder firing fractions in an entry of a mapping corresponding to the gear ratio, the turbine speed, and the first torque request; a torque request module that generates a second torque request based on at least one driver input; and a cylinder control module that determines a target cylinder firing fraction based on the second torque request and using the mapping and that controls activation and deactivation of cylinders of the engine based on the target firing fraction.