Measuring and testing – Internal combustion engine or related engine system or... – Monitoring intake air system
Reexamination Certificate
2008-05-15
2010-02-02
Caputo, Lisa M (Department: 2855)
Measuring and testing
Internal combustion engine or related engine system or...
Monitoring intake air system
Reexamination Certificate
active
07654134
ABSTRACT:
An air flow measuring device has a throttle portion provided in a first sub-passage, a second sub-passage branched from the first sub-passage at an upstream side of the throttle portion, and a flow amount sensor located in the second sub-passage. The second sub-passage is configured to introduce therein a part of air flowing in the first sub-passage, and an inlet of the second sub-passage is open into the first sub-passage at one side in a first radial direction perpendicular to a flow direction of air flowing in the first sub-passage. Furthermore, the throttle portion is provided to gradually reduce a passage dimension of the first sub-passage in a second radial direction, as toward an outlet of the first sub-passage. Here, the second radial direction is perpendicular to a surface defined by the first radial direction and the flow direction of air in the first sub-passage.
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U.S. Appl. No. 12/120,981, Noboru Kitahara, filed May 15, 2008, (JP 2007-157362).
U.S. Appl. No. 12/121,004, Shinichi Kamiya, filed May 15, 2008, (JP 2007-157392).
Enomoto Takashi
Kitahara Noboru
Caputo Lisa M
Denso Corporation
Kirkland, III Freddie
Nixon & Vanderhye PC
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