Abstract: An electronic injection two-stroke endothermic engine comprising an upper fuel injector (13) and a lower fuel injector (14), both accommodated in an intake duct (12) directly facing the cylinder (1), the latter closed by a head to form a combustion chamber (6) with one or more spark plugs (5) and connected to a pump-crankcase underneath via a plurality of side transfer ports (7, 8) which a central transfer port (15) is added to and crosses said intake duct (12) and allows the fuel sprayed by said lower injector (14) to reach the inside of the cylinder (1).

Abstract: An electronic injection two-stroke endothermic engine comprising an upper fuel injector (13) and a lower fuel injector (14), both accommodated in an intake duct (12) directly facing the cylinder (1), the latter closed by a head to form a combustion chamber (6) with one or more spark plugs (5) and connected to a pump-crankcase underneath via a plurality of side transfer ports (7, 8) which a central transfer port (15) is added to and crosses said intake duct (12) and allows the fuel sprayed by said lower injector (14) to reach the inside of the cylinder (1).

Abstract: A double-security anti-theft emergency switch, specially suitable for batteryless race motor vehicles comprising a fixed assembly integral with the vehicle and cooperating with a movable key which is tied up to the driver by means of an even partially elastic lace, is disclosed. The double security is bound to the presence of a first normally closed switch whose opening, via the movable key, is necessary to disconnect the ignition circuit of the motorcycle from ground and to allow the engine to start-up, so as to produce the electrical power necessary for an RFID system to monitor a transponder comprised in the movable key. Should the outcome of this transponder test be unsuccessful, a second normally open switch would be closed and would ground the ignition circuit of the engine and lock the motorcycle.

Abstract: A double-security anti-theft emergency switch, specially suitable for batteryless race motor vehicles comprising a fixed assembly integral with the vehicle and cooperating with a movable key which is tied up to the driver by means of an even partially elastic lace, is disclosed. The double security is bound to the presence of a first normally closed switch whose opening, via the movable key, is necessary to disconnect the ignition circuit of the motorcycle from ground and to allow the engine to start-up, so as to produce the electrical power necessary for an RFID system to monitor a transponder comprised in the movable key. Should the outcome of this transponder test be unsuccessful, a second normally open switch would be closed and would ground the ignition circuit of the engine and lock the motorcycle.