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:
Dec. 04, 2012
Filed:
Nov. 18, 2008
Alessandro Gallone, Orbassano, IT;
Caterina Venezia, Orbassano, IT;
Francesco Vattaneo, Orbassano, IT;
Alessandro Gallone, Orbassano, IT;
Caterina Venezia, Orbassano, IT;
Francesco Vattaneo, Orbassano, IT;
C.R.F. Societá Consortile per Azioni, Orbassano (Turin), IT;
Abstract
In a turbo-charged gasoline engine the opening profile of each intake valve, defined by the opening and closing moments and by the lift, or by the opening stroke of the intake valve, is varied according to the engine operating conditions, so as to reduce or completely eliminate the intervention of a 'waste-gate' valve and ensure that in each engine operating condition each cylinder processes only the quantity of air necessary for optimal combustion, with an air/gasoline dosage value close to the stoichiometric ratio.