High-pressure variable-flow-rate pump for a fuel-injection...

Details High-pressure variable-flow-rate pump for a fuel-injection... High-pressure variable-flow-rate pump for a fuel-injection...

2007-08-28

2007-08-28

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S456000

Reexamination Certificate

active

11095425

ABSTRACT:
The high-pressure pump (7) comprises a number of pumping elements (18) actuated in reciprocating motion through corresponding suction and delivery strokes. Each pumping element (18) is provided with a corresponding intake valve (25), in communication with an intake pipe (10), supplied by a low-pressure pump (9). Arranged on the intake pipe (10) is a shut-off valve (27) controlled in a choppered way in synchronism with an initial part (32; 32′) of the suction stroke of each pumping element (18).

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