Volumetric efficiency determination systems and methods
First Claim
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1. A cylinder control system of a vehicle, comprising:
- a cylinder control module that determines a desired cylinder activation/deactivation sequence and that activates and deactivates valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence; and
a volumetric efficiency (VE) module that determines a volumetric efficiency based on a cylinder activation/deactivation sequence of the previous Q cylinders in the firing order, wherein Q is an integer greater than one.
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Abstract
A cylinder control system of a vehicle, includes a cylinder control module and a volumetric efficiency (VE) module. The cylinder control module determines a desired cylinder activation/deactivation sequence. The cylinder control module also activates and deactivates valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence. The VE module determines a volumetric efficiency based on a cylinder activation/deactivation sequence of the last Q cylinders in the firing order. Q is an integer greater than one.
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Citations
20 Claims
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1. A cylinder control system of a vehicle, comprising:
- a cylinder control module that determines a desired cylinder activation/deactivation sequence and that activates and deactivates valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence; and
a volumetric efficiency (VE) module that determines a volumetric efficiency based on a cylinder activation/deactivation sequence of the previous Q cylinders in the firing order, wherein Q is an integer greater than one. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a cylinder control module that determines a desired cylinder activation/deactivation sequence and that activates and deactivates valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence; and
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11. A cylinder control method comprising:
- determining a desired cylinder activation/deactivation sequence;
activating and deactivating valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence; and
determining a volumetric efficiency (VE) based on a cylinder activation/deactivation sequence of the previous Q cylinders in the firing order, wherein Q is an integer greater than one. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
- determining a desired cylinder activation/deactivation sequence;
Specification