Weber S.p.a. Azienda Altecna

Weber S.r.l.

Sergio Turchi

Renato Filippi

Alessandro Valetto

An electromagnetically-controlled fuel injection valve for diesel engines includes a body having an upper electromagnetic metering valve which controls communication between a control chamber supplied with the pressurized fuel and a discharge port. The metering solenoid valve, which itself constitutes a unit independent of the rest of the injection valve, is supported by a head element connected to the body of the injection valve by axial clamping means and has an appendage which carries the control chamber and the discharge port and is inserted in an axial seat in the body with the interposition of double sealing means.

Electromagnetically-controlled fuel injection valve for diesel engines

Fuel injection apparatus for diesel engines includes an injection pump connected to an injector nozzle through a control device constituted by two calibrated and opposed non-return valves arranged to keep a residual pressure of a predetermined magnitude in the fuel supply passage to the injector between each injection cycle and the next. The two non-return valves are located downstream of the output of the pump and are preferably inserted in a body fixed to or forming part of the injector, or forming part of the delivery union of the pump.

Device for controlling fuel injection apparatus in diesel engines

A fuel injection pump for diesel engines, in which the pressure chamber of each cylinder (10) is defined on its side opposite the piston (16) by a slide valve (38) movable in a direction opposite the piston against the action of resilient biasing means (52). The slide valve is sensitive to the supply pressure of the fuel and controls communication between the pressure chamber and the fuel delivery passage (44, 46). The supply pressure is controlled by external modulating means which varies the equilibrium position of the slide valve. The slide valve allows the initial alteration of the effective delivery, and hence the effective injection advance, in dependence on the running conditions/load of the engine.

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Rivalta, Italy

Sergio Turchi