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:
Apr. 13, 2004
Filed:
Sep. 30, 2002
Applicant:
Inventors:
Vittorio Doria, Orbassano, IT;
Marco Lucatello, Orbassano, IT;
Assignee:
C.R.F. Societa Consortile per Azioni, Turin, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 1/500 ;
U.S. Cl.
CPC ...
F02B 1/500 ;
Abstract
A multicylinder petrol engine is provided with a hydraulic system for variable actuation of the valves, which enables easy control of operation of the engine according to different strategies. The engines according to the invention is, in particular, able to operate with a variable engine displacement in a modular way via the exclusion of selected cylinders, to control combustion by adjustment of the effective compression ration, and to control re-circulation of the exhaust gases at intake, in order to achieve low levels of consumption and reduced harmful exhaust emissions.