Calibration of model-based fuel control for engine start and crank to run transition
First Claim
1. A fuel control system for regulating fuel to cylinders of an internal combustion engine during an engine start and crank-to-run transition, comprising:
- a first module that determines a plurality of step-ahead cylinder air masses (GPOs) for a cylinder based on a plurality of GPO prediction models; and
a second module that regulates fueling to a cylinder of said engine based on said plurality of step-ahead GPOs until a combustion event of said cylinder;
wherein each of said plurality of GPO prediction models is calibrated based on data from a plurality of test starts that are based on a pre-defined test schedule.
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Abstract
A fuel control system for regulating fuel to cylinders of an internal combustion engine during an engine start and crank-to-run transition includes a first module that determines a plurality of step-ahead cylinder air masses (GPOs) for a cylinder based on a plurality of GPO prediction models. A second module regulates fueling to a cylinder of the engine based on the plurality of step-ahead GPOs until a combustion event of the cylinder. Each of the plurality of GPO prediction models is calibrated based on data from a plurality of test starts that are based on a pre-defined test schedule.
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Citations
22 Claims
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1. A fuel control system for regulating fuel to cylinders of an internal combustion engine during an engine start and crank-to-run transition, comprising:
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a first module that determines a plurality of step-ahead cylinder air masses (GPOs) for a cylinder based on a plurality of GPO prediction models; and
a second module that regulates fueling to a cylinder of said engine based on said plurality of step-ahead GPOs until a combustion event of said cylinder;
wherein each of said plurality of GPO prediction models is calibrated based on data from a plurality of test starts that are based on a pre-defined test schedule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of calibrating a plurality of step-ahead cylinder air mass (GPO) prediction models that are used to regulate fuel to cylinders of an internal combustion engine during an engine start and crank-to-run transition, comprising:
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executing a plurality of test starts of said engine;
collecting GPO measurement data during each of said test starts; and
calibrating said plurality of GPO prediction models based on said GPO measurement data;
wherein said test starts include a crank period, and simulated misfire and poor-start scenarios. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification