FEED-FORWARD CAMSHAFT PHASER CONTROL SYSTEMS AND METHODS
First Claim
1. An engine control system comprising:
- an inertia phase detection module that determines when an inertia phase of a gear shift is occurring within a transmission;
a feed-forward (FF) engine speed module that predicts an engine speed for a future time when the inertia phase ends;
a FF APC module that predicts an air-per-cylinder (APC) for the future time based on the engine speed;
a FF phaser position module that determines a FF phaser position based on the engine speed and the APC; and
a phaser control module that controls a camshaft phaser position based on the FF phaser position during the inertia phase of the gear shift.
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Accused Products
Abstract
An engine control system includes an inertia phase detection module, a feed-forward (FF) engine speed module, a FF APC module, a FF phaser postion module, and a phaser control module. The inertia phase detection module determines when an inertia phase of a gear shift is occurring within a transmission. The FF engine speed module predicts an engine speed for a future time when the inertia phase ends. The FF APC module predicts an air-per-cylinder (APC) for the future time based on the engine speed. The FF phaser position module determines a FF phaser position based on the engine speed and the APC. The phaser control module controls a camshaft phaser position based on the FF phaser position during the inertia phase of the gear shift.
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Citations
20 Claims
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1. An engine control system comprising:
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an inertia phase detection module that determines when an inertia phase of a gear shift is occurring within a transmission; a feed-forward (FF) engine speed module that predicts an engine speed for a future time when the inertia phase ends; a FF APC module that predicts an air-per-cylinder (APC) for the future time based on the engine speed; a FF phaser position module that determines a FF phaser position based on the engine speed and the APC; and a phaser control module that controls a camshaft phaser position based on the FF phaser position during the inertia phase of the gear shift. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An engine control method comprising:
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determining when an inertia phase of a gear shift is occurring within a transmission; predicting an engine speed for a future time when the inertia phase ends; predicting an air-per-cylinder (APC) for the future time based on the engine speed; determining a feed-forward (FF) phaser position based on the engine speed and the APC; and controlling a camshaft phaser position based on the FF phaser position during the inertia phase of the gear shift. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification