Cylinder to cylinder balancing using intake valve actuation

Internal-combustion engines – Charge forming device – Including cylinder pressure or temperature responsive means

Reexamination Certificate

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Reexamination Certificate

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06843231

ABSTRACT:
A method and apparatus for balancing a combustion phasing between a plurality of cylinders located in an engine. The method and apparatus includes a determining a combustion timing in each cylinder, establishing a baseline parameter for a desired combustion timing, and varying actuation of at least one of a plurality of intake valves, each intake valve being in fluid communication with a corresponding cylinder, such that the combustion timing in each cylinder is substantially equal to the desired combustion timing.

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