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:
Sep. 27, 1977
Filed:
May. 07, 1976
Applicant:
Inventors:
James R Pettingell, Granby, CT (US);
Lee R Armstrong, Enfield, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
731172 ;
Abstract
Diagnostic apparatus, connected to probes for sensing conditions or parameters of an internal combustion engine during non-combustion cranking of the engine, reads electrical conditions at times related to the crank angle of the engine. Electrical tests are made at times indicated by peaks and valleys in the starter current or voltage waveform, the average of these providing load-compensated indications of true electrical parameters, to eliminate effects of battery loading variations due to compression-induced variations in cranking power required.