Measuring and testing – Volume or rate of flow – Proportional
Patent
1994-01-03
1994-10-18
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Proportional
731182, G01F 168, G01M 1500
Patent
active
053557263
ABSTRACT:
A housing structure for reducing back air flow to the mass air flow sensor of an internal combustion engine. The housing structure consists of a housing defining a main air flow passage therethrough. A bypass passage is provided in the housing parallel to a longitudinal axis of the main air flow passage which receives therein the sensing head of the mass air flow sensor. A recovery chamber is connected to the bypass passage and is enclosed by an internal structure. The internal structure forms a pair of venturies with the sidewalls of the housing which induces an air flow through the bypass passage and the recovery chamber. A calibrated aperture is provided through the internal structure connecting the recovery chamber to the main air flow passage downstream of the bypass passage. The calibrated aperture reduces the air flow through the bypass passage during a back air flow.
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Clowater Lorna J.
Zurek Lawrence A.
Abolins Peter
Ford Motor Company
Goldstein Herbert
May Roger L.
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