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:
May. 24, 1988
Filed:
Oct. 20, 1986
Takeo Kiuchi, Wako, JP;
Akimasa Yasuoka, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Toyko, JP;
Abstract
A method and apparatus are provided for controlling the solenoid current of a solenoid valve which controls the amount of suction air in an internal combustion engine. The actual solenoid current flowing through the solenoid is detected and a solenoid current control valve is calculated as a function of engine operating conditions. A corrected solenoid current control value is determined as a function of the solenoid current control value and a pulse duration signal is determined as a function of the corrected solenoid current control value. A feedback control term is calculated as a function of the actual solenoid current and the corrected solenoid current control value. Further, a temperature corresponding to the solenoid temperature is detected and a temperature correction value is generated corresponding thereto. A pulse duration output signal is calculated for controlling the operation of said solenoid as a function of the pulse duration signal, the feedback control term, and the temperature compensation value.