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:
Jan. 26, 2016
Filed:
Dec. 15, 2011
Kenji Nishida, Waiko, JP;
Tetsuya Kaneko, Waiko, JP;
Tomiyuki Sasaki, Waiko, JP;
Koji Aoki, Waiko, JP;
Ranju Imao, Waiko, JP;
Kazuto Fukuzawa, Waiko, JP;
Kenji Nishida, Waiko, JP;
Tetsuya Kaneko, Waiko, JP;
Tomiyuki Sasaki, Waiko, JP;
Koji Aoki, Waiko, JP;
Ranju Imao, Waiko, JP;
Kazuto Fukuzawa, Waiko, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
To prevent a reduction in engine load detection accuracy due to variations in reluctor size within mass production tolerances, an engine control unit includes a pulse generator PC that detects a reluctor to output crank pulses. An angular velocity calculating unit calculates a first crank angular velocity on the basis of an interval between two crank pulses output in a predetermined section near compression top dead center TDC, and detects near overlap top dead center OLP the same reluctor used for calculating the first crank angular velocity to calculate a second crank angular velocity on the basis of an interval between generated two crank pulses. An engine load estimating unit calculates, as an engine load, a difference between the first crank angular velocity and the second crank angular velocity. The engine load is indicated mean effective pressure over a whole cycle including negative work done by the engine.