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:
Apr. 24, 1990
Filed:
Jul. 13, 1989
Applicant:
Inventors:
Toshio Manaka, Katsuta, JP;
Masami Shida, Mito, JP;
Teruji Sekozawa, Kawasaki, JP;
Shinsuke Takahashi, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123326 ; 123493 ;
Abstract
In an engine control apparatus for controlling the amount of fuel to be supplied by calculating the amount of liquid film or fuel adhered to an intake pipe of an engine, the adhesion rate of fuel and the time constant of evaporation of fuel in a preestimating manner, the time constant of evaporation is determined on the basis of the determined amount of liquid film, the amount of suction air and an air-to-fuel ratio upon fuel cut and the adhesion rate is determined on the basis of the amount of supply of fuel, the amount of suction air and an air-to-fuel ratio upon fuel recovery.