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:
Jul. 02, 1991
Filed:
Jun. 05, 1990
Shigeatsu Hongo, Saitama, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
The generation of knocking in an engine is controlled by an engine knock control system, which comprises circuit such as a magneto for generating a reference signal in synchronous with a rotation of the engine and an ignition circuit responsive to the reference signal for controlling electric supply to an ignition coil of the engine to ignite the engine. The control system further includes an ignition control circuit for maintaining an ignition timing to a second angle retarded with respect to the reference from the reference signal generating circuit when the knocking in the engine is detected by the knock sensor and for returning the ignition timing to a first angle corresponding to the reference signal when the temperature of the engine becomes below a predetermined temperature. For this purpose, the ignition control circuit is composed of a temperature discriminating circuit connected to a temperature sensor for detecting an engine temperature, a knock detecting circuit connected to the knock sensor for detecting knocking in the engine, and a switching circuit connected to the reference signal generating circuit and the ignition circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile