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:
May. 26, 1981
Filed:
May. 23, 1979
Toshiharu Iwata, Aichi, JP;
Tadashi Hattori, Okazaki, JP;
Siniti Mukainakano, Okazaki, JP;
Kenji Goto, Susono, JP;
Daisaku Sawada, Susono, JP;
Nippon Soken, Inc., Nishio, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
An ignition timing control system including a counter into which is introduced a data generated from a memory and indicative of the proper ignition advance corresponding to the operating conditions of an engine and the decrement or increment of the count is made in synchronism with predetermined degrees of rotation of the engine to determine the desired ignition timing. When knock occurs n times per m times of engine explosion stroke, the knocking ratio n/m is computed and the content of the counter is corrected in response to the value of the knocking ratio to correct the ignition timing. The value of m for the knocking ratio n/m is variable in accordance with the engine operating conditions.