System and method for determining a camshaft position in a variable valve timing engine
AssigneeGM Global Technoology Operations, Inc.
InventorsYiran Hu, Kenneth P. Dudek, Shawn W. Midlam-Mohler, Yann G. Guezennec, Stephen Yurkovich, Layne K. Wiggins
Life of this patent
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Abstract
A control module and system includes a camshaft position module that determines a camshaft position change of a crankshaft. The control module also includes a cam phaser velocity module determines a cam phaser velocity based on the camshaft position change. A cam phaser velocity module determines a compensation factor based on the cam phaser velocity. A cam position compensation module generates a corrected cam position signal based on the compensation factor.
Claims20
A method of controlling an engine comprising:
- determining a camshaft position change;
- determining a cam phaser velocity based on the camshaft position change;
- determining a compensation factor based on the cam phaser velocity;
- and
- generating a corrected cam position signal based on the compensation factor.
A control module for controlling an engine comprising:
- a camshaft position module that determines a camshaft position change of a camshaft;
- a cam phaser velocity module determines a cam phaser velocity based on the camshaft position change;
- a cam phaser velocity module that determines a compensation factor based on the cam phaser velocity;
- and
- a cam position compensation module that generates a corrected cam position signal based on the compensation factor.
Dependencies are inferred from the claim text.