Abstract: An internal combustion engine generally includes at least a cylinder; at least an intake valve acting on an intake port for controlling the airflow entering the cylinder; at least an injector for supplying uncombusted fuel to the cylinder; at least an outlet valve acting on a respective outlet port for controlling the flow of the exhaust gases at the outlet of the cylinder; a piston sliding in a linear manner within the cylinder; at least a first spark plug arranged in a position adjacent to the injector and acting within the combustion chamber; a pre-chamber communicating with the combustion chamber; and a second spark plug acting within the pre-chamber; the first spark plug is arranged in an intermediate position between the pre-chamber and the injector.

Abstract: An internal combustion engine comprising: at least a cylinder; at least an intake valve acting on an intake port for controlling the airflow entering the cylinder; at least an injector for supplying uncombusted fuel to the cylinder; at least an outlet valve acting on a respective outlet port 18 for controlling the flow of the exhaust gases at the outlet of the cylinder; a piston sliding in a linear manner within the cylinder; at least a first spark plug arranged in a position adjacent to the injector and acting within the combustion chamber; a pre-chamber communicating with the combustion chamber; and a second spark plug acting within the pre-chamber; the first spark plug is arranged in an intermediate position between the pre-chamber and the injector.

Abstract: A probe (1) for measuring the conductivity of a solution comprises a hydraulic part and an electronic part; the hydraulic part comprises a conduit (2) in the shape of a double tuning fork having an inlet (3) and an outlet (4) for the solution whose conductivity is to be measured; the electronic part comprises an energizing toroidal coil (7) and a receiving toroidal coil (22), both fitted round the conduit (2); the receiving coil (22) is mutually concatenated with the energizing coil (7) through an electromagnetic flux (F) generated by the energizing coil (7) in the respective toroid (T1) and through the solution circulating in the conduit (2); the probe (1) also comprises a feedback circuit (111) to keep the electromagnetic flux (F) constant.

Abstract: A probe (1) for measuring the conductivity of a solution comprises a hydraulic part and an electronic part; the hydraulic part comprises a conduit (2) in the shape of a double tuning fork having an inlet (3) and an outlet (4) for the solution whose conductivity is to be measured; the electronic part comprises an energizing toroidal coil (7) and a receiving toroidal coil (22), both fitted round the conduit (2); the receiving coil (22) is mutually concatenated with the energizing coil (7) through an electromagnetic flux (F) generated by the energizing coil (7) in the respective toroid (T1) and through the solution circulating in the conduit (2); the probe (1) also comprises a feedback circuit (111) to keep the electromagnetic flux (F) constant.

Abstract: A device for detecting the presence of chlorine in a fluid channeled along a conduit forming part of a hemodialysis machine, the device having: