Fuel-injection system for an internal-combustion engine

Details Fuel-injection system for an internal-combustion engine Fuel-injection system for an internal-combustion engine

2008-06-03

2008-06-03

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S459000, C123S506000, C123S508000, C123S514000

Reexamination Certificate

active

07380541

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.

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European Search Report for European Patent Application No. 06425781.9, mailed Apr. 26, 2007.

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