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:
Aug. 28, 2012
Filed:
Apr. 13, 2009
Attilio Porta, Orbassano, IT;
Giancarlo Osella, Orbassano, IT;
Gian Luigi Pregnolato, Orbassano, IT;
Marco Montu′, Orbassano, IT;
Emanuel Corigliano, Orbassano, IT;
Attilio Porta, Orbassano, IT;
Giancarlo Osella, Orbassano, IT;
Gian Luigi Pregnolato, Orbassano, IT;
Marco Montu′, Orbassano, IT;
Emanuel Corigliano, Orbassano, IT;
C.R.F. Societa Consortile per Azioni, Turin, IT;
Abstract
The method monitors a gear-change operation in a motor vehicle provided with an engine whose crankshaft is connected to a transmission having a gearbox) comprising first and second primary shafts connectable to the crankshaft of the engine by respective friction clutches controlled by corresponding actuators, and a secondary or output shaft connectable to the primary shafts by gears defining a plurality of velocity ratios or gears. The method comprises the operation of verifying and validating the detection of the disengagement of the previously engaged gear by detecting the angular velocity of the primary shaft corresponding to the gear to be disengaged, and comparing the detected value of said angular velocity with at least one reference angular velocity.