Engine mode transition utilizing dynamic torque control
First Claim
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1. A method of operating an engine having a plurality of cylinders, the method comprising:
- transitioning the engine from a first mode to a second mode;
temporarily adjusting an amount of torque produced by a cylinder of the engine for at least one cycle responsive to a difference in an amount of torque produced by a previous firing cylinder and a subsequent firing cylinder;
firing a final first mode cylinder if a number of cylinders firing increases from the first mode to the second mode during the transition; and
inhibiting the final first mode cylinder from firing if the number of cylinders firing decreases from the first mode to the second mode during the transition.
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Abstract
A method of operating an engine having a plurality of cylinders, the method comprising of transitioning the engine from a first mode to a second mode, and temporarily adjusting an amount of torque produced by a cylinder of the engine for at least one cycle responsive to a difference in an amount of torque produced by a previous firing cylinder and a subsequent firing cylinder.
38 Citations
14 Claims
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1. A method of operating an engine having a plurality of cylinders, the method comprising:
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transitioning the engine from a first mode to a second mode; temporarily adjusting an amount of torque produced by a cylinder of the engine for at least one cycle responsive to a difference in an amount of torque produced by a previous firing cylinder and a subsequent firing cylinder; firing a final first mode cylinder if a number of cylinders firing increases from the first mode to the second mode during the transition; and inhibiting the final first mode cylinder from firing if the number of cylinders firing decreases from the first mode to the second mode during the transition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating an engine having a plurality of cylinders, the method comprising:
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transitioning at least one cylinder of the engine from a first mode to a second mode; and temporarily adjusting a peak amount of torque produced by a last firing cylinder of the first mode and a first firing cylinder of the second mode, for at least one cycle, and responsive to a difference between a number of strokes per cycle of said at least one cylinder in the first mode and a number of strokes per cycle of said at least one cylinder in the second mode. - View Dependent Claims (12, 13, 14)
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Specification