Robert Boschgmbh

Elasis Sistema Ricerca Fiat Nel Mezzogiorno Societa Consortile Per Azioni

Domenico Maldera

Kurt Frank

Sisto Luigi De Matthaeis

Mario Ricco

Andreas Kellner

Sisto L De Matthaeis

Steffen Jung

Vincenzo Damiani

Davide Olieveri

A fuel injection system in which only one pump element at a time can aspirate fuel. As a result, it is attained that even in partial-load operation, all the pump elements are in operation, and as a consequence the smooth operation of the engine in partial-load operation is improved.

High-pressure fuel pump for internal combustion engine with improved partial-load performance

The pump has a body in which at least one cylinder for a piston is fixed by a head having a surface facing a corresponding surface of the body. The head has an intake conduit having an inlet at the surface of the head, and the body has a feed conduit having an outlet located at the surface of the body and at the inlet. Between the surfaces, a first seal is placed about the cylinder, and a second seal about the inlet. The seals are separate and made of elastomeric material. One of the seals is housed inside a circular depression in the seat of the cylinder, so as to engage the lateral surface of the cylinder.

High-pressure pump for feeding fuel to an internal combustion engine

An electromagnet housed in a skirt pressed on to a cap integral with the in conduit of the control valve. The skirt presents two shoulders separated by a distance greater than the height of the core of the electromagnet and on which the core and the cap rest. At least one Belleville washer between the core and the cap holds the core elastically on the respective shoulder and detached from the cap. A retaining ring coaxial with the washer is also provided for sealing the fuel flowing in an axial hole on the core and in the drain conduit.

Assembly of an electromagnet core of an electromagnetic internal

Growing community of inventors

Corato, Italy

Domenico Maldera