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. 06, 1977
Filed:
May. 07, 1976
Lee R Armstrong, Enfield, CT (US);
Henry J Mercik, Jr, Enfield, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
The turbocharger of an internal combustion engine is diagnosed by virtue of a single pressure measurement made during an acceleration of the engine using only its accessory loading, drag and inertia as a load, instead of making a profile of pressure ratio across the turbocharger under full load conditions on a dynomometer, as in the prior art. As the engine accelerates, pressure is continuously monitored, the ratio of the rate of change of the pressure with respect to time is made, and the maximum change in pressure per unit of time recorded; the minimum pressure sensed may also be recorded as an indication of the restrictive effect of the turbocharger when not being driven to its capacity.