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. 30, 1981
Filed:
Jan. 16, 1979
Applicant:
Inventors:
Theodor Gast, Berlin, DE;
Kurt Binder, Stuttgart, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73 35 ; 73651 ;
Abstract
In order to detect the occurrence of engine knock (pinging, detonation), a piezoelectric sensor is mounted on the engine in a location where the oscillations due to engine knock are readily transmitted. The detector is a strip or strips of piezoelectric material mounted in cantilevered configuration in a clamping device. An advantageous location for the sensor is a bore within one of the cylinder head bolts of the engine. A variety of embodiments is described including the provision of seals for permitting the introduction of a damping fluid in the receiver bore for the sensor.