Patents by Inventor Filippo Parisi
Filippo Parisi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9869263Abstract: A method of controlling a solenoid valve of an automotive system, the valve being charged by a pulse width modulated signal (PWM) and determining an actuation of an automotive system component is provided. The method comprises the following: determining a target end of command of the valve as a function of a PWM state and a time interval from a last change of PWM state; monitoring a current value, a PWM phase period and the PWM state of a last pulse width modulated signal; and correcting in the next pulse width modulated signal at least one of said current value and PWM phase period, so that a next end of command of the valve will occur at the target end of command.Type: GrantFiled: November 11, 2014Date of Patent: January 16, 2018Assignee: GM Global Technology Operations LLCInventors: Filippo Parisi, Paolo Casasso
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Publication number: 20170363030Abstract: A method of identifying a faulted component in an automotive system including an internal combustion engine managed by an Electronic Control Unit. The internal combustion engine is operated according to a predefined detection routine. A noise signal emitted by the activated internal combustion engine is recorded in a data carrier or memory system. The recorded noise signal is analyzed by a signal treatment algorithm to determine a plurality of vibration modes of the automotive system from the noise signal.; The amplitude of the noise signal is compared at each vibration mode with an acceptable amplitude threshold. A faulted component of the automotive system is determined if the amplitude of the correspondent vibration mode is greater than the acceptable amplitude threshold.Type: ApplicationFiled: June 19, 2017Publication date: December 21, 2017Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Massimiliano MELIS, Filippo PARISI, Eugenio MANTA, Nicola COSTA, Michele BELLUSCIO
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Publication number: 20150128913Abstract: A method of controlling a solenoid valve of an automotive system, the valve being charged by a pulse width modulated signal (PWM) and determining an actuation of an automotive system component is provided. The method comprises the following: determining a target end of command of the valve as a function of a PWM state and a time interval from a last change of PWM state; monitoring a current value, a PWM phase period and the PWM state of a last pulse width modulated signal; and correcting in the next pulse width modulated signal at least one of said current value and PWM phase period, so that a next end of command of the valve will occur at the target end of command.Type: ApplicationFiled: November 11, 2014Publication date: May 14, 2015Inventors: Filippo Parisi, Paolo Casasso
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Patent number: 8265894Abstract: A method is provided for estimating the temperature in an internal combustion engine. The method includes, but is not limited to the steps of providing a sensor resistor (RTD) in the internal combustion engine, the sensor resistor (RTD) having a predetermined resistance-temperature characteristic, measuring a sensor voltage (VRTD) across the sensor resistor (RTD), calculating a resistance value of the sensor resistor (RTD) based on the sensor voltage (VRTD) and estimating the temperature using the resistance value and the resistance-temperature characteristic. The method further comprises the steps of connecting, in series to the sensor resistor (RTD), a first branch of a current mirror arrangement, connecting a reference resistor (R0) in series to a second branch of the current mirror arrangement, measuring a reference voltage (V0) across the reference resistor (R0) and calculating the resistance value of the sensor resistor (RTD) based on the sensor voltage (VRTD) and the reference voltage (V0).Type: GrantFiled: June 26, 2009Date of Patent: September 11, 2012Assignee: GM Global Technology Operations LLCInventors: Paolo Casasso, Massimo Lucano, Filippo Parisi
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Patent number: 8146409Abstract: A pressure monitoring system for a combustion engine includes, but is not limited to of combustion chambers and pressure sensors associated to at least some of the combustion chambers. A multiplexer has inputs connected to at least a first one and a second one of the pressure sensors. A non-zero phase shift exists between the operating cycles of first and second ones of the combustion chambers associated to the first and second pressure sensors. A controller controls the multiplexer to output data from the first pressure sensor while the first combustion chamber is in a predetermined portion of its operating cycle and pressure data from the second pressure sensor while the second combustion chamber is in the predetermined portion of its operating cycle.Type: GrantFiled: July 22, 2008Date of Patent: April 3, 2012Assignee: GM Global Technology Operations LLCInventors: Alessandro Catanese, Filippo Parisi, Eugenio Pisoni, Claudio Monferrato
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Patent number: 8103426Abstract: At each engine cycle, nearby the TDCC, an injector is driven so as to perform a fuel injection sequence according to a predetermined pattern (A-Z), including a plurality of successive, separate fuel injection pulses (pulse 1-pulse N) having respective predetermined durations. The start of the first injection pulse (Pulse 1) of the sequence is defined as a predetermined angular distance from the TDCC. For each injection pulse (pulse 2-pulse N) following the first one (pulse 1) the respective start is selectively determined either as a time distance from the end of the immediately preceding injection pulse (pulse 1-pulse N?1) or as an angular distance from the relevant TDCC, in dependence on the instantaneous value of at least one predetermined parameter.Type: GrantFiled: January 26, 2009Date of Patent: January 24, 2012Assignee: GM Global Technology Operations LLCInventors: Filippo Parisi, Ivan Pelizzoni, Eugenio Pisoni
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Patent number: 8022336Abstract: A method is provided for controlling a glow plug (GP) associated with a cylinder chamber of a Diesel engine. The method includes, but is not limited to the steps of driving in an on-off manner in a period of time an electronic switch (M) connected essentially in series with the glow plug (GP) between the terminals of a d.c. voltage supply (B), sensing the voltage (V) across the glow plug (GP) and the current (I) flowing through the glow plug (GP) and performing a voltage closed loop control for controlling the temperature of the glow plug (GP). The method further includes, but is not limited to the steps of calculating a normalized current error (?I) as a function of said sensed current (I), calculating a normalized voltage error (?V) as a function of said sensed voltage (V), calculating a weight function (K) as a function of predetermined parameters (?, ?, n) and calculating a global error (?) as a function of said normalized current error (?I), normalized voltage error (?V) and weight function (K).Type: GrantFiled: May 21, 2009Date of Patent: September 20, 2011Assignee: GM Global Technology Operations LLCInventors: Paolo Casasso, Angelo Argento, Filippo Parisi, Stefano Nieddu
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Patent number: 7950378Abstract: A glow plug control unit is provided that includes a first switch for connecting power supply lines to a glow plug. The glow plug control unit further includes a voltage measurement unit for measuring the voltage at the power supply lines. A current measurement unit is built for measuring the current through the first switch and a control circuit is built for controlling the first switch and, in a current control mode, for regulating the current through the first switch.Type: GrantFiled: January 21, 2009Date of Patent: May 31, 2011Assignee: GM Global Technology Operations LLCInventors: Paolo Casasso, Stefano Cassani, Angelo Argento, Filippo Parisi, Andrei Kanev
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Publication number: 20100145652Abstract: A method and circuit are provided for estimating the temperature in an internal combustion engine. The method includes, but is not limited to the steps of providing a sensor resistor (RTD) in the internal combustion engine, the sensor resistor (RTD) having a predetermined resistance-temperature characteristic, and estimating the temperature based on the resistance-temperature characteristic.Type: ApplicationFiled: November 23, 2009Publication date: June 10, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Paolo CASASSO, Fabio AUTIERI, Antonio GIUFFRIDA, Davide CARBONE, Filippo PARISI
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Publication number: 20100082285Abstract: A method is provided for estimating the temperature in an internal combustion engine. The method includes, but is not limited to the steps of providing a sensor resistor (RTD) in the internal combustion engine, the sensor resistor (RTD) having a predetermined resistance-temperature characteristic, measuring a sensor voltage (VRTD) across the sensor resistor (RTD), calculating a resistance value of the sensor resistor (RTD) based on the sensor voltage (VRTD) and estimating the temperature using the resistance value and the resistance-temperature characteristic. The method further comprises the steps of connecting, in series to the sensor resistor (RTD), a first branch of a current mirror arrangement, connecting a reference resistor (R0) in series to a second branch of the current mirror arrangement, measuring a reference voltage (V0) across the reference resistor (R0) and calculating the resistance value of the sensor resistor (RTD) based on the sensor voltage (VRTD) and the reference voltage (V0).Type: ApplicationFiled: June 26, 2009Publication date: April 1, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Paolo CASASSO, Massimo LUCANO, Filippo PARISI
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Publication number: 20090289048Abstract: A method is provided for controlling a glow plug (GP) associated with a cylinder chamber of a Diesel engine. The method includes, but is not limited to the steps of driving in an on-off manner in a period of time an electronic switch (M) connected essentially in series with the glow plug (GP) between the terminals of a d.c. voltage supply (B), sensing the voltage (V) across the glow plug (GP) and the current (I) flowing through the glow plug (GP) and performing a voltage closed loop control for controlling the temperature of the glow plug (GP). The method further includes, but is not limited to the steps of calculating a normalized current error (?I) as a function of said sensed current (I), calculating a normalized voltage error (?V) as a function of said sensed voltage (V), calculating a weight function (K) as a function of predetermined parameters (?, ?, n) and calculating a global error (?) as a function of said normalized current error (?I), normalized voltage error (?V) and weight function (K).Type: ApplicationFiled: May 21, 2009Publication date: November 26, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Paolo CASASSO, Angelo ARGENTO, Filippo PARISI, Stefano NIEDDU
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Publication number: 20090222195Abstract: At each engine cycle, nearby the TDCC, an injector is driven so as to perform a fuel injection sequence according to a predetermined pattern (A-Z), including a plurality of successive, separate fuel injection pulses (pulse 1-pulse N) having respective predetermined durations. The start of the first injection pulse (Pulse 1) of the sequence is defined as a predetermined angular distance from the TDCC. For each injection pulse (pulse 2-pulse N) following the first one (pulse 1) the respective start is selectively determined either as a time distance from the end of the immediately preceding injection pulse (pulse 1-pulse N?1) or as an angular distance from the relevant TDCC, in dependence on the instantaneous value of at least one predetermined parameter.Type: ApplicationFiled: January 26, 2009Publication date: September 3, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Filippo PARISI, JR., Ivan PELIZZONI, Eugenio PISONI
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Publication number: 20090183718Abstract: A glow plug control unit is provided that comprises a first switch for connecting power supply lines to a glow plug. The glow plug control unit further comprises a voltage measurement unit for measuring the voltage at the power supply lines. A current measurement unit is built for measuring the current through the first switch and a control circuit is built for controlling the first switch and, in a current control mode, for regulating the current through the first switch.Type: ApplicationFiled: January 21, 2009Publication date: July 23, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Paolo CASASSO, Stefano CASSANI, Angelo ARGENTO, Filippo PARISI, Andrei KANEV
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Publication number: 20090038385Abstract: A pressure monitoring system for a combustion engine includes, but is not limited to of combustion chambers and pressure sensors associated to at least some of the combustion chambers. A multiplexer has inputs connected to at least a first one and a second one of the pressure sensors. A non-zero phase shift exists between the operating cycles of first and second ones of the combustion chambers associated to the first and second pressure sensors. A controller controls the multiplexer to output data from the first pressure sensor while the first combustion chamber is in a predetermined portion of its operating cycle and pressure data from the second pressure sensor while the second combustion chamber is in the predetermined portion of its operating cycle.Type: ApplicationFiled: July 22, 2008Publication date: February 12, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Alessandro CATANESE, Filippo PARISI, Eugenio PISONI, Claudio MONFERRATO