Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 28, 2010
Patent Application Number
11973785
Date Filed
October 10, 2007
Patent Primary Examiner
Patent abstract
Described herein is an electronic-injection fuel-supply system for an internal-combustion engine having at least one injector and a fuel pump; the fuel pump is provided with: a variable-volume pumping chamber; a one-way intake valve; a one-way delivery valve; a mobile piston that integrates within it the intake valve and is coupled to the pumping chamber to vary cyclically the volume of the pumping chamber itself; and an actuator device that impresses a reciprocating motion on the piston and has an electromagnetic actuator for actuating the piston during an intake phase and a spring for actuating the piston during a delivery phase.
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