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:
Feb. 03, 1987
Filed:
Jun. 26, 1985
Kenichiro Kamai, Toyoake, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
In an electronic fuel injection control system for an internal combustion engine having an odd number of cylinders wherein the fuel injection is performed by supplying fuel injection valves with a fuel injection pulse signal having a duration indicative of the quantity of fuel to be injected into the engine and two injection pulse signals are generated in each engine cycle on the basis of ignition signals, the first injection pulse signal is generated in response to the first ignition signal in each engine cycle and the second injection pulse signal is generated after the elapse of an additional period of time from the generation of (m+1)/2.sup.th ignition signal where m represents the number of cylinders. The additional period of time is basically established to the half of an ignition interval and is trimmed in accordance with the variation of engine speed.