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. 21, 1986
Filed:
Apr. 30, 1985
Tetsuo Nakajima, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A fuel injection control device for an internal combustion engine, which enables injection of fuel into separate cylinders to be controlled by only one timer counter, without reference to the number of cylinders, thereby simplifies the configuration of an electronic circuit for the control of the internal combustion engine, and promotes reduction of cost and improvement of reliability. A timer counter constantly takes count of clock pulses, a register is set to a first preset value which is a sum of a count value existing in said timer counter and a value corresponding to an expected delay time upon occurrence of a top dead center signal, and, subsequent to occurrence of an injection start signal, the register is set to a second preset value produced by addition of said actual fuel injection time signal to said first preset value, a comparator generates an injection start signal when a count value in the timer counter is equal to the first preset value in said register and generates an injection stop signal when said count value is equal to said second preset value, and one of the injectors for receiving said injection start and injection stop signals is selected and designated based on an injection discriminating signal and a top dead center signal.