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. 20, 1981
Filed:
Dec. 28, 1978
Applicant:
Inventors:
Norio Omori, Kariya, JP;
Hideya Fujisawa, Kariya, JP;
Yutaka Kawashima, Okazaki, JP;
Masakazu Ninomiya, Kariya, JP;
Hisasi Kawai, Toyohashi, JP;
Takeshi Matsui, Aichi, JP;
Assignees:
Nippondenso Co., Ltd., Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P / ;
U.S. Cl.
CPC ...
123425 ; 123416 ; 123418 ;
Abstract
A spark-ignition timing of the internal combustion engine is normally set at an MBT (minimum spark advance for best torque). However, when a knocking of the engine is detected by a vibration sensor fixed to the engine, the ignition timing is retarded with respect to the MBT by an angle corresponding to either a non-knocking limit retard angle or a maximum retard angle determined by engine operating conditions whichever is smaller.