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. 20, 2011
Filed:
Sep. 18, 2006
Jonathan Chauvin, Neuilly-sur-Seine, FR;
Gilles Corde, Bois-Colombes, FR;
Nicolas Petit, Sceaux, FR;
Pierre Rouchon, Meudon, FR;
Jonathan Chauvin, Neuilly-sur-Seine, FR;
Gilles Corde, Bois-Colombes, FR;
Nicolas Petit, Sceaux, FR;
Pierre Rouchon, Meudon, FR;
Institut Francais du Petrole, Cedex, FR;
Abstract
The invention is a method for real-time estimation of the instantaneous engine speed produced by each cylinder of an internal-combustion engine, from an instantaneous engine speed measurement at the end of the engine transmission system. A physical model, representing in real time the dynamics of the transmission system according to the crankshaft angle and to coefficients of a Fourier series decomposition of the instantaneous speed produced by each cylinder, is constructed. These coefficients are determined in real time from coupling between the model and an adaptive type non-linear estimator. The instantaneous speed produced by each cylinder is then deduced from these coefficients. The mean torque produced by each cylinder can also be deduced therefrom. An application is: engine controls.