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:
Dec. 11, 1984
Filed:
Jun. 23, 1982
Toshiaki Isobe, Nagoya, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
Electronic fuel injecting method and device for an internal combustion engine, wherein a basic injection time is obtained in accordance with an intake pressure of the engine and an engine rotational speed. During transitions, the basic injection time is corrected in accordance with the operating conditions of the engine so as to determine a fuel injection time. A throttle valve opening correction is increased or decreased in accordance with a changing speed of the throttle valve opening, and subsequently, is attenuated at a predetermined attenuation rate or restored at a predetermined restoration rate. An intake pressure is increased or decreased in accordance with a changing speed of the intake pressure, and subsequently, is attenuated at a predetermined attenuation rate or restored at a predetermined restoration rate. These corrections are combined to obtain a correction value for acceleration and deceleration, and the correction value is used to modify the basic injection time. The attenuation rate or the restoration rate of the throttle valve opening correction is made higher than the attenuation rate or the restoration rate of the intake pressure correction.