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. 28, 2006
Filed:
Nov. 14, 2005
Francesco Vattaneo, Pancalieri, IT;
Damiano Micelli, Orbassano, IT;
Costantinos Vafidis, Orbassano, IT;
Roberto Saretto, Orbassano, IT;
Francesco Vattaneo, Pancalieri, IT;
Damiano Micelli, Orbassano, IT;
Costantinos Vafidis, Orbassano, IT;
Roberto Saretto, Orbassano, IT;
C.R.F. Societa Consortile per Azioni, Orbassam, IT;
Abstract
In an internal combustion engine with variable actuation valves, each variable actuation valve is actuated by an actuator assembly including an actuating piston slidably mounted in a guide bushing. Between the actuating piston and the stem of the respective valve is interposed an auxiliary hydraulic tappet positioned outside the guide bushing of the actuating piston, so that said bushing can be dimensioned with a relatively small diameter, regardless of the outer diameter of the auxiliary hydraulic tappet. The intake valves of a same cylinder are actuated by a single cam, by means of a single pumping piston and by means of a single pressure chamber controlled by a single solenoid valve.