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. 16, 2016
Filed:
Jul. 18, 2014
C.r.f. Societa Consortile Per Azioni, Orbassano (Torino), IT;
Sergio Stucchi, Valenzano, IT;
Raffaele Ricco, Casamassima, IT;
Onofrio De Michele, Castellana Grotte, IT;
Marcello Gargano, Torre a Mare, IT;
Carlo Mazzarella, Noicattaro, IT;
Chiara Altamura, Taranto, IT;
C.R.F. SOCIETA CONSORTILE PER AZIONI, Orbassano (Torino), IT;
Abstract
An internal-combustion engine includes a system for variable actuation of intake valves, including a control valve for each cylinder, which controls communication of a pressurized-fluid chamber with a discharge channel. The control valve has at least three different positions, namely, a first completely open position, a second partially open position, and a third completely closed position. Electronic control means are programmed for keeping the control valve in its closed position in operating stages in which the intake valve must remain coupled to the respective cam and for bringing the control valve from its completely closed position to its partially open position or to its completely open position in operating stages in which the intake valve must be uncoupled from the respective cam, selection between the first position and said second position of the control valve being made as a function of one or more operating parameters of the engine.