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:
Jul. 17, 1990
Filed:
Feb. 21, 1989
Applicant:
Inventor:
Nagahisa Fujita, Hiroshima, JP;
Assignee:
Mazda Motor Company, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123399 ; 123361 ;
Abstract
An engine control apparatus executes feedback control on the basis of throttle valve position data in order to electronically drive a throttle valve in accordance with an operation of an accelerator pedal. The throttle valve is connected to a motor through a wire. The control apparatus calculates a signal for the feedback control so as to suppress resonance of the throttle valve caused by connection through the wire.