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:
Dec. 11, 2012
Filed:
Mar. 05, 2010
Satoru Okoshi, Wako, JP;
Kenichi Machida, Wako, JP;
Satoru Okoshi, Wako, JP;
Kenichi Machida, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
Embodiments of the invention provide that an ignition is retarded when continuously occurring knocks are detected, while an ignition is not retarded when a singly occurring knock is detected. By detecting the number of occurrences of detection data pieces from a knock sensorstored in a storage unitin a predetermined time period, a distribution of the detection data pieces is created. When one detection data piece having a value not less than a knock determination value is inputted from the knock sensor, the distribution of the detection data pieces is checked. For example, when the detection data pieces spread in a wide range, or the knock level voltage of the total detection data pieces is not less than a predetermined value, a retard instruction is outputted.