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. 12, 1988
Filed:
Jul. 07, 1986
Applicant:
Inventor:
Norbert Adolph, Aachen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73 35 ; 73DI / ;
Abstract
A method and device for measuring combustion knocking in the combustion chamber of an externally-ignited internal combustion engine, the device comprising a magnetostrictive element with a maximum diameter of 2 mm and a length-to-diameter ratio of greater than 100, the device being mounted in the engine so as to be exposed to the combustion chamber. The device can include a coil to which the magnetostrictive element is connected for converting changes in magnetic conductability in the magnetostrictive element, due to pressure increases in the combustion chamber to which it is exposed, into electrical signals. The coil in turn can be connected to an electronic switching system for the engine.