Abstract: An exhaust system provided with exhaust gas after-treatment for a combustion engine comprising an exhaust pipe and a pumping device, which is buried inside the tank, from which it draws so as to feed a water solution of urea under pressure to an electromagnetic injector; the tank is supplied with urea powder and water, which are mixed on the inside so as to obtain a water solution of urea with a variable concentration; and a water supply circuit to supply water to the tank, which is provided with a first pipe, which draws the water from a basin and is regulated by a first valve, which allows water to be introduced into the tank, if necessary, or to be drained to the surrounding environment when the water quantity already contained in the tank is sufficient.

Abstract: A method of estimating the MFB50 combustion index of the cylinders of an internal combustion engine provided with a drive shaft coupled to at least a pair of position sensors, each of which is arranged at a respective end of the drive shaft; the estimation method comprising the steps of: acquiring the signals coming from two position sensors; determining the angular torsion of the drive shaft based on the signals from the two position sensors; and estimating the MFB50 combustion index of the single cylinders of the internal combustion engine based on the angular torsion of the drive shaft.

Abstract: A device to supply an internal combustion engine with water comprising one single tank of an exhaust system provided with exhaust gas after-treatment; the tank is divided, on the inside, into a first powder urea storage area and a second water collecting area, and wherein the powder urea and the water are mixed inside the tank so as to obtain a water solution of urea with a variable concentration, the device comprises at least one second electromagnetic injector, which is designed to inject water into the internal combustion engine, and a second pumping device, which is drowned inside the tank and draws from the second water collecting area in order to supply water under pressure to said at least one second electromagnetic injector.

Abstract: A device for the acquisition and conditioning of a sound signal generated by a source of an internal combustion engine and comprising a box-shaped support body having a first measuring assembly and a second measuring assembly; wherein the first measuring assembly is provided with at least two first microphones which lie on a first plane and are configured for the detection of a first acoustic signal generated by the source along a first provenance direction; and wherein the second measuring assembly is provided with at least a second microphone arranged on a second plane configured for the detection of a second acoustic signal generated by the source along a second provenance direction different from the first provenance direction.

Abstract: A method is described to control an actuation profile of an electromechanical linear actuator device of an internal combustion engine designed to control the movement of a component; the internal combustion engine comprises a sensor, which faces the actuator device and is designed to detect the noise generated by the movement of the component; the method comprises the steps of acquiring, by means of the sensor, the intensity of a signal generated by the impact of the component against a limit stop; identifying a first listening window of the signal associated with said impact; calculating a noise index inside the listening window; comparing the noise index with a reference value; and controlling the actuation profile of the actuator device based on this comparison.

Abstract: A piston pump for feeding a liquid in a vehicle having at least one piston, which is configured to cyclically slide inside a housing between a top dead centre and a bottom dead centre. The liquid is usually fed along a main feeding direction from a suction duct to a delivery duct. The piston pump has two solenoid valves, which are each arranged in the suction duct and in the delivery duct, respectively, and are designed to be operated by an electronic control unit so as to reverse the liquid feeding direction from the main feeding direction to a secondary feeding direction opposite the main liquid feeding direction and/or so as to adjust the cylinder capacity of the piston pump. The piston is operated by an electromechanical actuator, in particular comprising an electromagnet.

Abstract: A device for the production of water on board a vehicle comprising a duct, where an air flow flows; a tank, which contains a quantity of adsorbing material and is arranged along the duct; a first and a second adjustment valve for the adjustment of the duct, which are arranged upstream and downstream, respectively, of the tank and are movable between an opening position, in which the air flow can flow towards the tank, and a closing position, in which the air flow cannot flow towards the tank, and vice versa; wherein the first and the second adjustment valve are controlled in a synchronous and concordant manner; and a heating element, which is designed to heat the adsorbing material when the first and the second adjustment valve are in the closing position.

Abstract: A device to supply an internal combustion engine with water comprising one single tank of an exhaust system provided with exhaust gas after-treatment; the tank is divided, on the inside, into a first powder urea storage area and a second water collecting area, and wherein the powder urea and the water are mixed inside the tank so as to obtain a water solution of urea with a variable concentration, the device comprises at least one second electromagnetic injector, which is designed to inject water into the internal combustion engine, and a second pumping device, which is drowned inside the tank and draws from the second water collecting area in order to supply water under pressure to said at least one second electromagnetic injector.

Abstract: A method is described to control an actuation profile of an electromechanical linear actuator device of an internal combustion engine designed to control the movement of a component; the internal combustion engine comprises a sensor, which faces the actuator device and is designed to detect the noise generated by the movement of the component; the method comprises the steps of acquiring, by means of the sensor, the intensity of a signal generated by the impact of the component against a limit stop; identifying a first listening window of the signal associated with said impact; calculating a noise index inside the listening window; comparing the noise index with a reference value; and controlling the actuation profile of the actuator device based on this comparison.

Abstract: An exhaust system provided with exhaust gas after-treatment for a combustion engine comprising an exhaust pipe and a pumping device, which is buried inside the tank, from which it draws so as to feed a water solution of urea under pressure to an electromagnetic injector; the tank is supplied with urea powder and water, which are mixed on the inside so as to obtain a water solution of urea with a variable concentration; and a water supply circuit to supply water to the tank, which is provided with a first pipe, which draws the water from a basin and is regulated by a first valve, which allows water to be introduced into the tank, if necessary, or to be drained to the surrounding environment when the water quantity already contained in the tank is sufficient.

Abstract: A device for the acquisition and conditioning of a sound signal generated by a source of an internal combustion engine and comprising a box-shaped support body having a first measuring assembly and a second measuring assembly; wherein the first measuring assembly is provided with at least two first microphones which lie on a first plane and are configured for the detection of a first acoustic signal generated by the source along a first provenance direction; and wherein the second measuring assembly is provided with at least a second microphone arranged on a second plane configured for the detection of a second acoustic signal generated by the source along a second provenance direction different from the first provenance direction.

Abstract: A method of estimating the MFB50 combustion index of the cylinders of an internal combustion engine provided with a drive shaft coupled to at least a pair of position sensors, each of which is arranged at a respective end of the drive shaft; the estimation method comprising the steps of: acquiring the signals coming from two position sensors; determining the angular torsion of the drive shaft based on the signals from the two position sensors; and estimating the MFB50 combustion index of the single cylinders of the internal combustion engine based on the angular torsion of the drive shaft.

Abstract: A method to control a supercharged internal combustion engine by means of a turbocharger provided with a turbine and a compressor which compresses the air taken in; the control method includes the steps of determining the instantaneous rotation speed of the turbocharger; and calculating the average power delivered by the turbine as a function of the absolute value of the j-th harmonic component of the instantaneous rotation speed of the turbocharger and of the instantaneous rotation speed of the turbocharger; and controlling the supercharged internal combustion engine as a function of the average power delivered by the turbine.

Abstract: A method to control a supercharged internal combustion engine by means of a turbocharger provided with a turbine and a compressor which compresses the air taken in; the control method includes the steps of determining the instantaneous rotation speed of the turbocharger; and calculating the average power delivered by the turbine as a function of the absolute value of the j-th harmonic component of the instantaneous rotation speed of the turbocharger and of the instantaneous rotation speed of the turbocharger; and controlling the supercharged internal combustion engine as a function of the average power delivered by the turbine.

Abstract: A method for determining the rotation speed of at least one supercharger (14) in an internal combustion engine (1); the method includes detecting, through a microphone (25), the intensity of a sound signal generated by the rotation of the supercharger (14) and determining the evolution of the frequency content of the sound signal over time; determining, completely irrespective of the sound signal, a first estimation of the rotation speed of the supercharger (14) through which an interval of plausible frequencies for the rotation speed of the supercharger (14) may be determined; determining a second estimation of the rotation speed of the supercharger (14) according to the frequency content of the sound signal within the interval of plausible frequencies and validating the second estimation of the rotation speed of the supercharger (14) using the first estimation of the rotation speed of the supercharger (14).

Abstract: A method for determining the rotation speed of at least one supercharger which compresses the sucked air in an internal combustion engine; the control method, during the normal operation of the internal combustion engine, comprises the steps of detecting, by means of a microphone, the intensity of a sound signal generated by the rotation of the supercharger; determining a frequency content of the sound signal generated by the rotation of the supercharger; identifying the frequencies with maximum amplitude within the frequency content of the sound signal generated by the rotation of the supercharger; recognising the frequencies with maximum amplitude which are each other's multiples or submultiples; and determining the rotation speed of the supercharger using exclusively the frequencies with maximum amplitude which are each other's multiples or submultiples.

Abstract: A method and system for controlling an internal combustion power train, whereby the values of various operating parameters of the power train are measured by means of a number of sensors, and operation of the engine is monitored by means of at least one control unit, which is physically separate from the engine block and connected to the sensors; at least one pressure sensor is housed in the control unit, is physically separate from the engine block, and determines the intensity of pressure waves generated by the power train; and the control unit determines the value of at least one operating parameter of the power train as a function of the intensity of the pressure waves generated by the power train.

Abstract: A method for determining the rotation speed of at least one supercharger which compresses the sucked air in an internal combustion engine; the control method, during the normal operation of the internal combustion engine, comprises the steps of detecting, by means of a microphone, the intensity of a sound signal generated by the rotation of the supercharger; determining a frequency content of the sound signal generated by the rotation of the supercharger; identifying the frequencies with maximum amplitude within the frequency content of the sound signal generated by the rotation of the supercharger; recognising the frequencies with maximum amplitude which are each other's multiples or submultiples; and determining the rotation speed of the supercharger using exclusively the frequencies with maximum amplitude which are each other's multiples or submultiples.

Abstract: A method for determining the rotation speed of at least one supercharger in an internal combustion engine; the method includes detecting, by means of a microphone, the intensity of a sound signal generated by the rotation of the supercharger and determining the evolution of the frequency content of the sound signal over time; determining, completely irrespective of the sound signal, a first estimation of the rotation speed of the supercharger by means of which an interval of plausible frequencies for the rotation speed of the supercharger may be determined; determining a second estimation of the rotation speed of the supercharger according to the frequency content of the sound signal within the interval of plausible frequencies and validating the second estimation of the rotation speed of the supercharger by means of the first estimation of the rotation speed of the supercharger.

Abstract: A method for controlling the overpressure in a fuel-supply system of a common-rail type for an internal-combustion engine provided with a number of cylinders; the method has the steps of: supplying fuel under pressure to a common rail connected to a number of injectors by means of a high-pressure pump; detecting the effective value of the pressure of the fuel within the common rail; comparing the effective value of the pressure of the fuel within the common rail with a safety value; determining a condition of emergency if the effective value of the pressure of the fuel within the common rail is higher than the safety value; and driving, in the case of emergency, the injectors for discharging part of the fuel present in the common rail so as to contain the increase in pressure of the fuel within the common rail.