Iveco Fiat S.p.a.

Iveco S.p.a.

Leonardo Engineers for Integration Srl

Pietro Bianchi

Dragoljub Milanovic

Claudio Sparti

A decompression braking device in an endothermic engine () is provided of the type comprising a lever axle () on which a plurality of eccentric bushings () of a corresponding plurality of levers () provided with tappets () are rotationally and eccentrically mounted for actuating a plurality of exhaust valves (), and a camshaft () for actuating the plurality of levers (), the device is characterized in that it comprises an actuating member () mounted externally to the lever axle () and connected to the latter by linkages (), such that a respective rotation of the bushings () by a predetermined angular value (&#x3b1;), with consequent displacement of the hinging axis of the levers (), corresponds to each excursion of the actuating member ().

Decompression braking device in endothermic engines

The present invention is relative to an internal combustion engine equipped with a plurality of combustion chambers such to allow the variation of the opening of the valves of said chambers by means of an actuator. The engine according to the invention comprises a cylinder head having a supporting axle () on which a plurality of bushings (') is mounted. Said bushings are made integral one another in rotation around the supporting axle by means of a plate () rigidly connected at least in the direction of rotation.

Internal combustion engine provided with a valve opening variation system and vehicle equipped with such engine

A chain transmission device for controlling the timing system of an internal combustion engine with two overhead camshafts, and having a first chain transmission from the drive shaft to an intermediate shaft, and a second chain transmission from the intermediate shaft to both the camshafts; and wherein the first transmission defines a step-down transmission ratio between the drive shaft and the intermediate shaft; the second transmission defines a step-down transmission ratio between the intermediate shaft and the camshafts; the chain of the second transmission has a pitch smaller than the pitch of the chain of the first transmission; and the intermediate shaft is defined by the drive shaft of a fuel pump of the engine.

Chain transmission device for controlling the timing system of an internal combustion engine with two overhead camshafts

An internal-combustion engine, in particular for a vehicle, is provided with a plurality of cylinders and a cylinder head which defines, for each cylinder, at least one exhaust duct and at least one intake duct; the engine is further provided with an exhaust manifold communicating with the exhaust ducts, and a system for recirculating exhaust gas from the exhaust manifold to the intake ducts; the system comprises a further manifold which distributes the recirculated exhaust gases to the intake ducts and communicates with the exhaust manifold through a recirculation duct provided at least partly directly in the cylinder head which is provided with a heat exchanger for cooling the recirculated exhaust gases.

Internal-combustion engine provided with an exhaust gas recirculation system, in particular for a vehicle

An induction manifold for an internal-combustion engine, comprising an elongate main body having longitudinal inner cavity provided with an opening adapted to communicate with the intake orifices of the engine, an inlet duct provided with an air-inlet opening and communicating with the cavity, a feed duct for EGR gases formed integrally with the manifold and comprising a first portion extending inside the main body from an inlet orifice for EGR gases to the air-inlet duct and from a second portion extending inside the inlet duct and provided with an outlet opening in the inlet duct itself, and a baffle disposed in the inlet duct between the air-inlet opening and the outlet opening of the feed duct for directing the air and the EGR gases towards a mixing zone inside the inlet duct and situated at a predetermined distance from the cavity of the main body.

Growing community of inventors

Turin, Italy

Pietro Bianchi