Internal-combustion engines – Intake manifold
Reexamination Certificate
2009-03-30
2010-10-19
McMahon, M. (Department: 3741)
Internal-combustion engines
Intake manifold
Reexamination Certificate
active
07814876
ABSTRACT:
An intake airflow control mechanism for an engine includes a first valve shaft on which valve elements of intake airflow control valves are fitted in such a manner that the valve elements pivot in accordance with the rotation of the first valve shaft; a second valve shaft on which valve elements of intake airflow control valves are fitted in such a manner that the valve elements pivot in accordance with the rotation of the second valve shaft; an actuator that rotates the first valve shaft, a link mechanism that transmits the rotation of the first valve shaft to the second valve shaft, a stopper that stops the rotation of the second valve shaft when the second valve shaft is in a prescribed rotational position, and a sensor that detects the amount by which the first valve shaft is rotated by the actuator.
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Gifford Krass Sprinkle Anderson & Citkowski P.C.
McMahon M.
Toyota Jidosha & Kabushiki Kaisha
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