Abstract: System for controlling the carburetion of an internal combustion engine comprising the following activities: a) starting the engine; b) determining the factor ?o using any known method; c) measuring the ionization current cio; d) modifying—from outside—the factor ? by a predefined amount equivalent to ?? bringing it to the value ?1=?o+??; e) repeating the measurement of the ionization current ci1; f) calculating the value of the difference of the ionization current A?ci1 equivalent to cio?Ci1; g) repeating operations d. and e. until the difference between the last value of the ionization current o,? and the second last value cin-1 is smaller than ?ci; where ?ci is a predefined value which is assumed to have no influence with respect to the carburetion.

Abstract: A purifying system for combustive air in an internal combustion engine is provided. The system includes an intake conduit of combustive air into the engine, a discharge conduit of the exhaust gases produced by the engine, and a cyclone separator associated to the intake conduit and provided with a collecting tank of detritus, a link conduit which has a greater diameter than the discharge conduit and which is inserted on at least a terminal tract of the discharge conduit, such that a hollow space is defined between the terminal tract and the link conduit, and a connecting conduit destined to connect the collecting tank with the hollow space by flowing into the link conduit upstream of an end of the discharge conduit with respect to an outflow of the exhaust gases.

Abstract: System for controlling the carburetion of an internal combustion engine comprising the following activities: a) starting the engine; b) determining the factor ?o using any known method; c)measuring the ionization current cio; d) modifying—from outside—the factor ? by a predefined amount equivalent to ?? bringing it to the value ?1=?o+??; e) repeating the measurement of the ionization current ci1; f) calculating the value of the difference of the ionization current A?ci1 equivalent to cio-Ci1; g) repeating operations d. and e. until the difference between the last value of the ionization current o, ? and the second last value cin-1 is smaller than ?ci; where ?ci is a predefined value which is assumed to have no influence with respect to the carburetion.

Abstract: A purifying system for combustive air in an internal combustion engine is provided. The system includes an intake conduit of combustive air into the engine, a discharge conduit of the exhaust gases produced by the engine, and a cyclone separator associated to the intake conduit and provided with a collecting tank of detritus, a link conduit which has a greater diameter than the discharge conduit and which is inserted on at least a terminal tract of the discharge conduit, such that a hollow space is defined between the terminal tract and the link conduit, and a connecting conduit destined to connect the collecting tank with the hollow space by flowing into the link conduit upstream of an end of the discharge conduit with respect to an outflow of the exhaust gases.

Abstract: A two-stroke internal combustion engine is provided and includes a casing, a cylinder, a piston skirt, an aspirating port, a carburetor which supplies the casing with an air/fuel mixture, through said aspirating port, a transfer conduit which opens into the cylinder through an air/fuel inlet port, and a fuel storage system, or resonance tube which communicates with a first port located above the aspirating port, and with a second port located below the aspirating port. The first port and the second port are alternatingly opened by the piston skirt, which includes a through-hole having a diameter between 0.5 and 3.0 mm. The through-hole being located, when the piston is mounted in the engine, in a same radial plane as the second port.

Abstract: A fuel injection system for a two-stroke internal combustion engine (1), elastically housed internally of a chamber, comprises a carburetor (30) to which are associated an induction port (9) for an air/fuel mixture and a fuel supply conduit (10) intercepted by means for metering housed in a recess (16) communicating with a second aperture (15) located above the induction port (9), which is in turn connected by an accumulation conduit (12) to a first aperture (14) located below the induction port (9), the apertures (14, 15) being alternatively opened by the piston skirt (3); the accumulation conduit is entirely afforded in the cylinder body.

Abstract: A fuel injection system for a two-stroke internal combustion engine (1) elastically housed in a compartment and comprising a carburettor (30) with which there are associated an induction port (9) for the air/fuel mixture and a fuel feed conduit (10) intercepted by dispenser means fixed to a fuel accumulation system (25) communicating with a first aperture (14) positioned below the induction port (9) and with a second aperture (15) positioned above the induction port (9), said apertures (14, 15) being alternately opened by the skirt of the piston (3), said system comprising a non heat-conducting elastic intake header (22) positioned between the carburettor (30) fixed to the wall (40) of the compartment housing the engine (1) and the feel dispenser means fixed to the fuel accumulation system (25).

Abstract: A fuel injection system for a two-stroke internal combustion engine (1), elastically housed internally of a chamber, comprises a carburettor (30) to which are associated an induction port (9) for an air/fuel mixture and a fuel supply conduit (10) intercepted by means for metering housed in a recess (16) communicating with a second aperture (15) located above the induction port (9), which is in turn connected by an accumulation conduit (12) to a first aperture (14) located below the induction port (9), the apertures (14, 15) being alternatively opened by the piston skirt (3); the accumulation conduit is entirely afforded in the cylinder body.

Abstract: A fuel injection system for a two-stroke internal combustion engine (1) elastically housed in a compartment and comprising a carburettor (30) with which there are associated an induction port (9) for the air/fuel mixture and a fuel feed conduit (10) intercepted by dispenser means fixed to a fuel accumulation system (25) communicating with a first aperture (14) positioned below the induction port (9) and with a second aperture (15) positioned above the induction port (9), said apertures (14, 15) being alternately opened by the skirt of the piston (3), said system comprising a non heat-conducting elastic intake header (22) positioned between the carburettor (30) fixed to the wall (40) of the compartment housing the engine (1) and the feel dispenser means fixed to the fuel accumulation system (25).