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. 01, 2003
Filed:
Mar. 19, 2002
Yue Yun Wang, Columbus, IN (US);
Cummins, Inc., Columbus, IN (US);
Abstract
A system for estimating turbocharger rotational speed includes a first pressure sensor producing a first pressure signal indicative of the pressure of air supplied by a turbocharger compressor to an intake manifold of an internal combustion engine, a second pressure sensor producing a second pressure signal indicative of the pressure of air entering the turbocharger compressor, a temperature sensor producing a temperature signal indicative of the temperature entering the compressor, a speed sensor producing a speed signal indicative of the rotational speed of the engine, and a control computer estimating the turbocharger rotational speed as a function of the first pressure signal, the second pressure signal, the temperature signal and the speed signal.