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:
Nov. 05, 2002
Filed:
Jun. 29, 2001
Kenichi Machida, Saitama, JP;
Yoshiaki Hirakata, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
Calculating an acceleration corrective in response to a subtle change in a throttle action by utilizing first and second rate-of-change calculators to calculate rates of change D&thgr;THA, D&thgr;THB of a throttle opening in preceding first and second periods (second period>first period) per a predetermined crankshaft rotational angle). A maximum value updater updates a stored value in a maximum value memory with a greater one of past and present maximum rates of change D&thgr;TH of the throttle opening, based on a compared result from a comparator. Points in a plurality of cycles read from a point calculator based on the maximum rate of change D&thgr;TH of the throttle opening are added together and inputted to a corrective value calculator. If the total of points is equal to or greater than a preset value, then an acceleration corrective quantity calculated by the corrective value calculator depending on the maximum value of rates of change of the throttle opening is supplied to a fuel injection time calculator, which calculates a fuel injection time Ti in view of the acceleration corrective quantity.