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. 26, 2012
Filed:
Jan. 04, 2008
Calvin H. Cox, Mirfield, GB;
Calvin H. Cox, Mirfield, GB;
Cummins Turbo Technologies Limited, Huddersfield, GB;
Abstract
The speed of rotation of a rotary member such as a compressor or turbine wheel of a turbocharger is determined by directing an ultrasonic signal into a blade cavity and receiving the reflected signal, which is amplitude modulated by virtue of the passage of the blades across the ultrasonic transducer. The received signal is demodulated to determine the frequency of amplitude modulation of the received signal caused by passage of blades between the first and second locations. This enables the speed of rotation to be calculated. The performance of the turbocharger can thus be optimised in the context of the overall engine system via an engine control module.