Induction system with E.G.R.
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorToshio Kurahashi
Life of this patent
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Abstract
An induction system for a multiple cylinder internal combustion engine that employs a pair of plenum chambers with a common air inlet. An exhaust gas recirculation system is provided for distributing exhaust gases equally to the chambers of the engine by re-introducing the exhaust gases to the common air inlet. In a similar manner, a crankcase ventilating system is provided wherein the crankcase gases are delivered to the common air inlet for equal distribution of the chambers.
Claims17
In an induction system for an internal combustion engine comprising a first plenum chamber, a first series of runners extending from said first plenum chamber to a first series of combustion chamber intakes, a second plenum chamber, a second series of runners communicating said second plenum chamber with a second series of runners communicating said second plenum chamber with a second series of combustion chamber intakes, a common air inlet for said plenum chambers communicating at one end with the atmosphere and having an outlet end, means for communicating said air inlet outlet end with each of said plenum chambers for introducing an air charge to the engine combustion chambers through said plenum chambers, a throttle valve in said common air inlet for controlling the flow of air into said plenum chamber, an exhaust system for receiving engine exhaust gases, and means for recirculating a portion of said engine exhaust gases back to said combustion chambers including an E.G.R. outlet discharging directly into said common air inlet.
An induction system for an internal combustion engine comprising a first plenum, a first series of runners communicating said first plenum chamber with a first series of combustion chamber inlets, a second plenum chamber, a second series of runners communicating said second plenum chamber with a second series of combustion chamber inlets, a common air inlet having an inlet end and an outlet portion, means communicating said air inlet outlet portion with each of said plenum chambers for introducing an air charge to the engine combustion chamber, a throttle valve in said common air inlet for controlling the flow to each of said plenum chambers, and a crankcase ventilating system having a crankcase ventilating air outlet which discharges directly into said common air inlet.
Dependencies are inferred from the claim text.