Intake structure for V-type engine
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorMasahiro Uchida
Life of this patent
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Abstract
An induction system for a V-type engine that is comprised of a plenum chamber that is disposed within the valley between the cylinder banks but spaced therefrom for cooling purposes. The plenum chamber serves the engine combustion chambers through a plurality of intake pipes that extend from the plenum chamber to the intake ports of the respective cylinder heads. The intake pipes are also spaced from each other so as to accommodate a cooling air flow.
Claims25
An induction system for an engine having a pair of angularly disposed cylinder banks, each having at least two cylinder bores formed therein, said cylinder banks defining a valley between them, each cylinder bank having a plurality of intake ports for the cylinder bores therein formed adjacent said valley, a plenum chamber extending through said valley and spaced from said cylinder banks for forming a cooling air flow path therearound, said plenum chamber being comprised of a generally open topped body closed by an upper closure plate, a first series of intake pipes extending from the intake ports of one of said cylinder banks into said plenum chamber through said upper closure plate, and a second series of intake pipes extending from the intake ports of the other of said cylinder banks into said plenum chamber through said upper closure plate, said intake pipes being all spaced from each other for providing a cooling air flow path therebetween.
Dependencies are inferred from the claim text.