Centro Ricerche Fiat S.p.a.

Giulio Arietti

Sergio Occella

Claudio Lombardi

Gianpiero Borello

Giampiero Borello

An internal combustion engine has a fuel injector in a side wall of each cylinder to direct a fuel jet onto a flat or concave impingement surface of a shield projecting into the cylinder from the cylinder head, to atomize the fuel in the vicinity of the sparking plug electrodes with minimal wetting of the cylinder walls and of the plug electrodes. The piston head is formed with an asymmetrically located combustion chamber surrounded by extensive 'squish' areas arranged to promote the formation of a fuel vortex in which charge stratification occurs centrifugally.

Internal combustion engine with fuel injection

An internal combustion engine has a fuel injector located in a side wall of each cylinder, and a combustion chamber in each cylinder formed largely by a cavity recessed in the crown of the piston, to define substantial 'squish' areas between the piston crown and a cylinder head which contains an ignition prechamber, situated opposite the fuel injector, communicating with a sparking plug, the fuel injector being arranged to direct at least one part of the fuel into a region adjacent the ignition prechamber which forms part of the volume of the combustion chamber.

Internal combustion engine

A device regulates the fuel delivery from a fuel injection pump to the cylinder of an internal combustion engine by means of two secondary chambers connected respectively to the induction manifold and Venturi tube, and a main chamber open to the outside, so that pressure variations in the Venturi tube and manifold cause the diaphragms of the respective chambers to move, thereby acting upon mechanical transmission means to control a regulating component of the injection pump.

Growing community of inventors

Turin, Italy

Giulio Arietti