The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 1997
Filed:
Nov. 20, 1995
Applicant:
Inventors:
Atsushi Kanke, Hitachi, JP;
Hisao Sonobe, Hitachinaka, JP;
Shigeru Oho, Hitachinaka, JP;
Kaoru Uchiyama, Oomiya-machi, JP;
Assignee:
Hitachi, Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
731182 ;
Abstract
The invention provides an apparatus for measuring intake air for an internal combustion engine by means of a detecting unit including a heat generating resistor, and a flow amount arithmetic unit for calculating an air flow amount on the basis of the output from the detecting unit. The measuring apparatus further includes an equalizer circuit for regulating the amplitude or phase of the output signal from the detecting unit, between the detecting unit and the flow amount arithmetic unit.