Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Joseph Norman Ulrey0
Ross Dykstra Pursifull0
Date of Patent
May 5, 2015
0Patent Application Number
134170720
Date Filed
March 9, 2012
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An embodiment of an engine is described. The engine includes a first throttle valve. The first throttle valve is provided in a first intake passage coupled to an intake manifold. The first throttle valve has a default closed position. The engine further includes a second throttle valve. The second throttle valve is provided in a second intake passage coupled to the intake manifold. The second throttle valve has a default open position. The engine further includes a venturi pump that is provided between the second throttle valve and the intake manifold. When the second throttle valve is in the default open position, intake air flows through the venturi pump.
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