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:
Apr. 24, 1984
Filed:
Oct. 26, 1981
Applicant:
Inventors:
Tadashi Hattori, Okazaki, JP;
Yoshiki Ueno, Okazaki, JP;
Osamu Kashima, Kariya, JP;
Masamichi Shibata, Toyota, JP;
Assignees:
Nippon Soken, Inc., Nishio, JP;
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73 35 ; 73116 ;
Abstract
A knocking detector for internal combustion engines includes an illumination detector for detecting the illumination intensity of combustion of the air-fuel mixture in the combustion chamber and a knocking discriminator for deciding whether or not a knocking has occurred on the basis of a signal produced from the illumination detector. The illumination detector is provided on the cylinder head of the internal combustion engine and is sensitive only to the light longer in wavelength than the near infrared rays.