Abstract: A fuel injection pump, particularly of the distributor type in which a piston is driven with reciprocating and rotary motion in order to effecting a combined action of pumping and distribution to the various cylinders of the internal combustion engine associated therewith, comprising a regulation control unit which receives signals as a function of which the pump throughput is to be varied, and which by means of an actuator correspondingly controls the movement of a delivery control element.

Abstract: The invention relates to an improvement in internal combustion engine injection pump, according to which the injection timing is modified by moving the timing element (9) by means of a hydraulic actuator (41) fed with fuel which varies in pressure with the pump speed and which urges the actuator piston (42) against elastic means which react within an axially mobile rotating cylinder (47), of which the axial position is determined by contact between two cam surfaces (52,56) in series, and of which the rotation is a function of the position of the pump throughput control members.

Abstract: The invention relates to an internal combustion engine injection pump provided with a regulator unit comprising a mobile valving element on which there act an actuator, elastic means, and the back-pressure of the fuel discharged by the pump on delivery interruption, in order to improve the response characteristics of the regulator unit.

Abstract: This invention relates to an injection pump (11) for internal combustion engines equipped with members (19, 21) for selectively cutting off the fuel delivery (15) to a preselected and variable number of cylinders in a plural-cylinder engine, when the power required of the engine is but a fraction of the power the engine can deliver, so as to obtain conditions of minimum specific consumption of fuel.

Abstract: This invention suggests to provide an injection pump for internal-combustion engines, in which the rotary motion of the distributor piston (23) has a speed slower than the relative speed of the cam members (16, 17) which control the axial piston stroke in order to improve the working conditions of said cam members (16, 17) and to increase the pumping speed of the piston.

Abstract: This invention relates to the injection pumps for internal-combustion engines to which the fuel is supplied by a feed pump and aims at obtaining a speed signal by adjusting the pressure within a chamber (35) closed by the bias of centrifugal masses (18) of the governor (15) associated with the injection pump (11).

Abstract: The invention relates to a distributor-type injection pump for feeding fuel to an internal combustion engine, and provided with means capable of ensuring that the fuel pressures in the various delivery ducts connected to the various engine cylinders are equal.

Abstract: The invention relates to an injection pump of the piston-distributor type which is mobile with reciprocating and axial rotary motion, and comprises a discharge chamber.Said chamber is maintained at a pressure substantially less than the feed pressure in order to determine rapid stoppage of the engine at the instant of closure of a solenoid valve.

Abstract: A centrifugal governor for adjusting the fuel delivery to an internal combustion engine of the Diesel type is disclosed, wherein centrifugal masses slide along a tubular supporting member and act upon a sleeve, a spring and a slider to govern, through an eccentric-controlled adjustment lever, the rate of flow of the fuel injected into the engine, to reproduce, at will any desired law of variation of the fuel delivery according to the individual requirements of each particular engine.

Abstract: The invention relates to a device for automatically controlling the start of the delivery of an injection-pump for an internal-combustion engine and comprises, as the control member, a tridimensional planar cam (24) mounted on a slider (10) for being shifted along a first direction as a function of the rate of flow of delivery of the fuel to the engine and, along a second direction, perpendicular to the former, as a function of the pump rpm.

Abstract: This invention relates to a device for controlling the rate of delivery of a fuel-injection pump (2) for an internal-combustion engine. The device is composed of a tridimensional planar cam (8) mounted on a slider (40) which is movable axially as a function of the rpm of the pump, the end of stroke depending on the temperature of the engine. The cam (8), moreover, is movable transversely relative to the axis of the slider (40) as a function of a supercharge pressure of the engine.