Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 3, 2016
Patent Application Number
14062323
Date Filed
October 24, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
Systems and methods are provided for engine systems including a vacuum-powered multiple tap aspirator coupled between atmospheric, an engine crankcase, or another source and a vacuum source such as a compressor inlet or engine intake manifold. The multiple tap aspirator includes a suction tap arranged in a throat of the aspirator, a suction tap arranged in a diverging cone of the aspirator, and a suction tap arranged in a straight exit tube downstream of the diverging cone of the aspirator. The aspirator provides vacuum generation and suction flow over a range of vacuum levels at the suction taps, and suction flow only passes through a single check valve before entering the aspirator.
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