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:
Nov. 24, 1998
Filed:
Apr. 24, 1997
Applicant:
Inventors:
Francesco Vattaneo, Pancalieri, IT;
Marco Consani, S. Pietro Val Lemina Pinerolo, IT;
Lorentino Macor, Beinasco, IT;
Assignee:
C.R.F. Societa' Consortile per Azioni, Turin, IT;
Primary Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ;
U.S. Cl.
CPC ...
123 9016 ; 123 9012 ; 123308 ; 123470 ; 123568 ;
Abstract
An internal combustion engine has two intake valves for each cylinder which can be uncoupled from the respective tappets by drawing fluid under pressure out of a chamber interposed between each tappet and the respective valve. To each engine cylinder there are associated two intake valves, one of which is actuated only at high speed and high loads of the engine. The engine is deprived of the conventional throttle valve. The two intake conduits associated with each cylinder have different specific shapes.