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. 04, 2008
Filed:
Apr. 25, 2005
Mario Ricco, Valenzano, IT;
Sisto Luigi DE Matthaeis, Valenzano, IT;
Raffaele Ricco, Valenzano, IT;
Domenico Lepore, Valenzano, IT;
Mario Ricco, Valenzano, IT;
Sisto Luigi De Matthaeis, Valenzano, IT;
Raffaele Ricco, Valenzano, IT;
Domenico Lepore, Valenzano, IT;
C.R.F. Societa Consortile per Azioni, Orbassano, IT;
Abstract
The injection system () comprises a pump () designed to send fuel at high pressure to an accumulation volume, for example formed by a common rail (), for supplying a plurality of injectors (). The pump () comprises at least one pumping element () actuated with reciprocating motion with a compression stroke (Pi-Ps) at a sinusoidal speed (), in synchronism with each step of fuel injection. The injection system () comprises at least one by-pass solenoid valve (), which is controlled by a chopper control unit () for modulating the delivery of the pumping element () by varying both the instant of start (To) and the instant of end (T) of delivery during the compression stroke (Pi-Ps), in such a way that the delivery is synchronous with the injection phase.