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. 06, 1998
Filed:
Aug. 02, 1995
Applicant:
Inventors:
Yutaka Nishimura, Hitachinaka, JP;
Izumi Watanabe, Hitachinaka, JP;
Assignees:
Hitachi, Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731182 ; 732025 ; 7320411 ;
Abstract
An intake air flow measuring apparatus for internal combustion engine apparatus has a thermal type air flow meter, a unit for correcting the response delay of the thermal type air flow meter, and a unit for detecting the direction of the flow of intake air so that an amount of reverse air flow is detected by the response delay correcting unit and air flow direction unit, and that a true amount of sucked air flow is calculated from the output of the thermal type air flow meter and the amount of reverse air flow.