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:
Jan. 05, 1999
Filed:
Sep. 10, 1992
Gilles Jehanno, Aubergenville, FR;
Regie Nationale Des Usines Renault, Boulogne-Billancourt Cedex, FR;
Abstract
This device applies to all internal combustion heat engines. It includes an electronic unit (10) associated with a ring gear (12) of the inertial flywheel and with sensor (22) with variable reluctance such as those used for electronic ignition engines. Instantaneous period d.sub.i of advancement of teeth (14-16) is produced (26-30-32-34). From signal d.sub.i, period T.sub.4 of the fraction of revolution of the flywheel corresponding to a period of the combustions is calculated (36) and stored (38). A magnitude D'.sub.4, representative of a projection of the alternating component of the angular velocity of the flywheel at the frequency of the combustions is also calculated (40-42). A calculating stage (44) combines (T.sub.4 and D'.sub.4) with constants A and B suited to the type of engine for producing signals for measuring the average gas torque for each combustion of the gas mixture in the cylinders of the engine. This makes possible optimized settings and the detection of misfirings of combustion of passenger or industrial motor vehicles.