Patent application number | Description | Published |
20090013688 | CONTROL METHOD FOR A TURBOCHARGER SUPERCHARGED INTERNAL COMBUSTION ENGINE - A control method for an internal combustion engine supercharged by means of a turbocharger provided with a turbine and with a compressor; the control method contemplates the steps of: establishing at least one operating limit curve on a Reduced Mass Flow Rate/Compression Ratio map; establishing at least one intervention curve of a wastegate valve which adjusts a bypass pipe of the turbine on a Reduced Mass Flow Rate/Compression Ratio map; establishing at least one intervention curve of a Poff valve which adjusts a bypass pipe of the compressor on a Reduced Mass Flow Rate/Compression Ratio map; using the operating limit curve to limit the pressure target downstream of the compressor used by the engine control; controlling the opening of the wastegate valve if the intervention curve of the wastegate valve is exceeded; and controlling the opening of the Poff valve if the intervention curve of the Poff valve is exceeded. | 01-15-2009 |
20090018783 | METHOD FOR ACQUISITION AND PROCESSING OF AN INTAKE PRESSURE SIGNAL IN AN INTERNAL COMBUSTION ENGINE WITHOUT AN INTAKE MANIFOLD - Method of acquisition and processing of an intake pressure signal in an internal combustion engine without an intake manifold; the internal combustion engine having at least one cylinder that receives fresh air through an intake duct, which is controlled by a butterfly valve and is provided with a pressure sensor connected to an electronic control unit. The acquisition and processing method provides for the following steps: measuring, via the pressure sensor, the instantaneous induction pressure at a plurality of different crank angles distributed over an engine cycle; storing, during each engine cycle, the instantaneous induction pressures in a fast acquisition buffer of the electronic control unit; and determining, at the end of each engine cycle, the mean induction pressure in the engine cycle by calculating a mean of the instantaneous induction pressures previously stored in the fast acquisition buffer of the electronic control unit. | 01-15-2009 |
20110088388 | METHOD FOR CONTROLLING WITH ADAPTIVITY A WASTEGATE IN A TURBOCHARGED INTERNAL COMBUSTION ENGINE - A method for controlling the wastegate in a turbocharged internal combustion engine including the steps of: determining, during a design phase, a control law which provides an objective opening of a controlling actuator of the wastegate according to the supercharging pressure; determining an objective supercharging pressure; measuring an actual supercharging pressure; determining a first open loop contribution of an objective position of a controlling actuator of the wastegate by means of the control law and according to the objective supercharging pressure; determining a second closed loop contribution of the objective position of the controlling actuator of the wastegate; and calculating the objective position of the controlling actuator of the wastegate by adding the two contributions. | 04-21-2011 |
20110088389 | METHOD FOR CONTROLLING A WASTEGATE IN A TURBOCHARGED INTERNAL COMBUSTION ENGINE - A method for controlling the wastegate in a turbocharged internal combustion engine including the steps of: determining, during a design phase, a control law which provides an objective opening of a controlling actuator of the wastegate according to the supercharging pressure; determining an objective supercharging pressure; measuring an actual supercharging pressure; determining a first open loop contribution of an objective position of a controlling actuator of the wastegate by means of the control law and according to the objective supercharging pressure; determining a second closed loop contribution of the objective position of the controlling actuator of the wastegate; and calculating the objective position of the controlling actuator of the wastegate by adding the two contributions. | 04-21-2011 |
20110088390 | METHOD FOR ZONE CONTROLLING A WASTEGATE IN A TURBOCHARGED INTERNAL COMBUSTION ENGINE - A method for controlling the wastegate in a turbocharged internal combustion engine including the steps of: determining, during a design phase, a control law which provides an objective opening of a controlling actuator of the wastegate according to the supercharging pressure; determining an objective supercharging pressure; measuring an actual supercharging pressure; determining a first open loop contribution of an objective position of a controlling actuator of the wastegate by means of the control law and according to the objective supercharging pressure; determining a second closed loop contribution of the objective position of the controlling actuator of the wastegate; and calculating the objective position of the controlling actuator of the wastegate by adding the two contributions. | 04-21-2011 |
20110166766 | METHOD FOR CONTROLLING THE MOVEMENT OF A COMPONENT THAT MOVES TOWARDS A POSITION DEFINED BY A LIMIT STOP IN AN INTERNAL COMBUSTION ENGINE - A method for controlling the movement of a component that moves towards a position defined by a limit stop in an internal combustion engine; the control method comprises the steps of detecting, by means of at least one acoustic microphone, the intensity of the microphonic signal generated by the impact of the component against the limit stop; and determining the impact instant and/or the impact speed of the component against the limit stop by analyzing the intensity of the microphonic signal generated by the impact. | 07-07-2011 |
20110167900 | METHOD OF DETERMINING OPENING OF AN INTERNAL COMBUSTION ENGINE INTAKE VALVE - A method of determining opening of an intake valve of an internal combustion engine, the method including the steps of: determining the time pattern of an intake pressure in an intake manifold of the internal combustion engine, the time pattern of the rotation speed of a drive shaft of the internal combustion engine, or the time pattern of a voltage at the terminals of a battery of the internal combustion engine; determining an intake-frequency component of the intake pressure, the rotation speed, or the voltage; and
| 07-14-2011 |
20120109490 | METHOD FOR CONTROLLING THE SPEED OF AN INTERNAL COMBUSTION ENGINE SUPERCHARGED BY MEANS OF A TURBOCHARGER - A method controls an internal-combustion engine ( | 05-03-2012 |
20120109491 | METHOD FOR CONTROLLING THE SPEED OF AN INTERNAL COMBUSTION ENGINE SUPERCHARGED BY MEANS OF A TURBOCHARGER - A method controls a supercharged internal-combustion engine and comprises steps of: establishing predetermined lower-limit and higher-limit speeds (PLLS, PHLS) of a turbocharger; calculating a reduced lower-limit speed (RLLS) according to the PLLS and an absolute temperature upstream of a compressor; calculating a reduced higher-limit speed (RHLS), according to the PHLS and temperature, higher than the RLLS; determining an “over-speed” interval (OSI) between the RRLS and RHLS; calculating a current reduced-limit speed (CRLS); controlling the turbocharger to bring the CRLS back to no greater than the RLLS every time the CRLS is detected and within the OSI; establishing in a preliminary adjustment and set-up phase a threshold value; and controlling the turbocharger to bring the CRLS back to no greater than the RLLS after a time interval, which is equal to the threshold value, has elapsed from a moment in which the CRLS is detected and within the OSI. | 05-03-2012 |
20120109492 | METHOD FOR CONTROLLING THE SPEED OF AN INTERNAL COMBUSTION ENGINE SUPERCHARGED BY MEANS OF A TURBOCHARGER - A method controls an internal-combustion engine ( | 05-03-2012 |
20120123663 | Turbosupercharged internal combustion engine control method - A method of controlling an internal combustion engine supercharged by a turbosupercharger having a turbine and a compressor; the control method including the steps of: determining, in a reduced mass flow/compression ratio graph, at least one limit operation curve of the compressor representing a limit of the operating range of the compressor; controlling the turbosupercharger to keep the actual reduced mass flow and actual compression ratio of the compressor within the limit defined by the limit operation curve of the compressor; determining an index as a function of the dynamics of the reduced mass flow of the compressor; and modifying the limit operation curve of the compressor as a function of the index. | 05-17-2012 |
20130282257 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method for controlling an internal-combustion engine comprises steps of: determining a current value of a driving torque requested to the internal-combustion engine and a first time derivative of the current value of the driving torque; comparing the current value of the driving torque and first time derivative with first and second threshold values, respectively; determining a “sports driving” condition only if the current value of the driving torque is higher than the first threshold value and the first time derivative is higher than the second threshold value; and controlling the internal-combustion engine as a function of the “sports driving” condition. | 10-24-2013 |
20130340708 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method for controlling an internal combustion engine ( | 12-26-2013 |
20130340709 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method for controlling an internal combustion engine, comprising a number of cylinders and wherein the air mass trapped inside each cylinder is adjusted by means of a respective intake valve; the control method includes determining the total target torque; determining a target number of active cylinders; determining a target supercharge pressure such to guarantee the total target torque and controlling the intake valves of the target number of active cylinders ( | 12-26-2013 |
20130345948 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method for controlling an internal combustion engine comprising a number of cylinders and wherein the air mass trapped in each cylinder is adjusted by means of a respective intake valve by means of an actuation device with variable opening law; the method includes determining the required total target torque to be delivered; determining a number of active cylinders and a number of inactive cylinders; determining the angle for controlling the intake valve of the number of active cylinders and of the number of inactive cylinders, respectively; and controlling the internal combustion engine as a function of the control angle of the intake valves of the number of active cylinders and of the number of inactive cylinders. | 12-26-2013 |
20150068191 | METHOD FOR THE CORRECTION OF THE REDUCED MASS FLOW RATE OF A COMPRESSOR IN AN INTERNAL COMBUSTION ENGINE TURBOCHARGED BY MEANS OF A TURBOCHARGER - A method for correcting the reduced mass flow rate of a compressor in an internal combustion engine turbocharged by means of a turbocharger provided with a turbine and with a compressor; the internal combustion engine comprising an intake manifold and an exhaust manifold, and being set up to allow the passage of air from the intake manifold to the exhaust manifold; the method comprising determining, in a design stage, a control law that provides an objective opening of a control actuator of the wastegate as a function of an actual supercharging pressure and of a reduced mass flow rate of the compressor; and correcting the reduced mass flow rate of the compressor as a function of the enthalpy of a gas mixture flowing through the turbine of the turbocharger. | 03-12-2015 |
20150128586 | METHOD TO CONTROL A WASTEGATE VALVE IN A TURBOCHARGED INTERNAL COMBUSTION ENGINE - A method to control the wastegate valve wastegate in a turbocharged internal combustion engine suited to allow air to directly flow from the intake manifold to the exhaust manifold; the method providing for determining a control law which provides an objective opening of an actuator controlling the wastegate valve as a function of a contribution in the absence of air flow directly from the intake manifold to the exhaust manifold and a contribution as a function of the quantity of air directly flowing from the intake manifold to the exhaust manifold. | 05-14-2015 |