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:
Jul. 10, 2007
Filed:
Mar. 16, 2006
Andrew M. Voto, Brighton, MI (US);
Salem Ahmad Fayyad, Grand BLanc, MI (US);
Andrew A. Wassef, Ann Arbor, MI (US);
Andrew M. Voto, Brighton, MI (US);
Salem Ahmad Fayyad, Grand BLanc, MI (US);
Andrew A. Wassef, Ann Arbor, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
Measured engine inlet air temperature and flow parameters are communicated to an engine controller with a single waveform. A variable frequency digital input signal representative of inlet air flow is combined with a variable amplitude analog signal representative of inlet air temperature, and supplied as a single input signal to the engine controller. The controller includes a buffer circuit that re-creates the variable frequency digital signal from the input waveform for application to an input capture circuit that measures the flow-related frequency, and an analog-to-digital converter that is coordinated with the input capture circuit for sampling the temperature-related amplitude.