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:
Jun. 03, 2008
Filed:
Jan. 04, 2007
Mario Ricco, Casamassima, IT;
Raffaele Ricco, Valenzano, IT;
Sergio Stucchi, Valenzano, IT;
Onofrio DE Michele, Valenzano, IT;
Antonio Gravina, Valenzano, IT;
Domenico Lepore, Valenzano, IT;
Mario Ricco, Casamassima, IT;
Raffaele Ricco, Valenzano, IT;
Sergio Stucchi, Valenzano, IT;
Onofrio De Michele, Valenzano, IT;
Antonio Gravina, Valenzano, IT;
Domenico Lepore, Valenzano, IT;
C.R.F. Societa Consortile per Azioni, Orbassano, IT;
Abstract
The injection system comprises a high-pressure pump with variable flowrate, having at least one pumping element provided with an intake valve in communication with an intake pipe and a delivery valve in communication with a delivery pipe. A pressure regulator is set on the intake pipe downstream of a metering solenoid valve designed to meter the flowrate of the pump according to the operating conditions of the engine. The pressure regulator is designed to discharge the excess fuel into a compartment of a crankcase for lubricating the usual actuation mechanism of the pumping element. Set between an inlet of the solenoid valve and an inlet of the pressure regulator is a control volume designed to contain an amount of fuel such as to guarantee an adequate flow of fuel in an area corresponding to the inlet of the solenoid valve.