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:
Jun. 14, 1983
Filed:
Apr. 29, 1981
Applicant:
Inventor:
Kiyokane Kaji, Toyota, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73 35 ;
Abstract
A knocking detector compares an output of a knocking sensor with a reference level derived by integrating and amplifying the output of the knocking sensor to produce a knocking signal. An amplification factor of the amplifier is changed between a low engine rotation speed region and a high engine rotation speed region such that the amplification factor is lower than that at low engine rotational speeds. As a result, the ability to detect knocking is not lowered at high engine rotational speeds so that knocking can be properly detected under all running conditions.