| MAGNETI MARELLI S.P.A. Patent applications |
| Patent application number | Title | Published |
|---|
| 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 |
| 20120089318 | Method for controlling the air supply in a cylinder of a four-stroke internal combustion engine with controlled ignition - A method for controlling air supply in a cylinder of a four-stroke internal-combustion engine with controlled ignition includes steps of: determining, in a phase prior to a suction phase, an estimate of mass of desired air to be sucked into the cylinder during the suction phase; determining, in a phase prior to the suction phase, a forecast of suction pressure during the suction phase; determining, in a phase prior to the suction phase, programming of suction of air as a function of the estimate of the mass of the desired air to be sucked into the cylinder during the suction phase and of the forecast of the suction pressure during the suction phase; and controlling, until an end of an exhaust phase, the suction of air into the cylinder by piloting a control device for implementation of an intake valve according to the programming of the suction of air. | 04-12-2012 |
| 20120041668 | Method for controlling the fuel supply in a cylinder of a four-stroke internal combustion engine with controlled ignition - Method for controlling the fuel supply in a cylinder of a four-stroke internal combustion engine with controlled ignition; the control method comprises the steps of: determining, prior to the exhaust phase, a first forecast (P | 02-16-2012 |
| 20120012084 | Fuel Pump For A Direct Injection System - A fuel pump for a direct injection system provided with a common rail; the fuel pump has: at least one pumping chamber defined in a main body; a piston which is mounted sliding inside the pumping chamber; a suction channel connected to the pumping chamber and regulated by a suction valve; a delivery channel connected to the pumping chamber and regulated by a delivery valve; and a high pressure connection, which is welded by a ring weld to a wall of the main body at the delivery channel, has the function of allowing a connection to a supply duct that feeds the fuel under pressure to the common rail, and has internally a passing through channel through which the fuel coming from the delivery channel flows towards the supply duct. | 01-19-2012 |
| 20110309797 | Management Unit And Method For Managing Electric Energy Stored In A Battery Comprising A Number Of Series-Connected Cells - A management unit and method for managing electric energy stored in a battery composed of a number of series-connected cells, the management unit having: a main equalizing circuit, which forms the primary of an electric transformer and has a constant alternating-current generator powered by the battery and which feeds alternating current of constant intensity through the main equalizing circuit; and, for each cell of the battery, a secondary equalizing circuit, which forms the secondary of the electric transformer, is connected parallel to the cell, has a one-way electronic device which imposes electric current flow to the cell in one direction only, and is connected to a drive device that can be activated to zero the voltage applied to the cell by the secondary equalizing circuit. | 12-22-2011 |
| 20110259704 | AUTOMATIC MANUAL TRANSMISSION PROVIDED WITH PARKING LOCK DEVICE - An automatic manual transmission having: at least one primary shaft; at least one secondary shaft; a plurality of gear pairs, each of which mechanically couples the primary shaft to the secondary shaft; a plurality of synchronizers, each of which is mounted coaxial to a shaft, is coupled to a gear of at least one gear pair, and is adapted to be actuated to engage the gear to the shaft; a plurality of forks, which actuate the synchronizers and are movable; a parking lock device which may be actuated to prevent the rotation of the secondary shaft; and a connecting device, which is mechanically connected on one side to a first fork and on the other side to the parking lock device to transmit the movement of the first fork to the parking lock device so as to control the activation and deactivation of the parking lock device itself by exploiting the movement of the first fork. | 10-27-2011 |
| 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 |
| 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 |
| 20110125865 | METHOD FOR OPERATING AN ELECTRONIC CONTROL UNIT DURING A CALIBRATION PHASE - A method for operating an electronic control unit during a calibration phase; the method contemplating the steps of: dividing an area of a FLASH storage memory connected to a microprocessor in two pages between them identical and redundant, each of which is aimed at storing all the calibration parameters used by a control software; and using the two pages alternatively so that a first page contains the values of the calibration parameters and is queried by the microprocessor, while a second page is cleared and made available to store the updated values of the calibration parameters. | 05-26-2011 |
| 20110108007 | FUEL PUMP WITH REDUCED SEAL WEAR FOR A DIRECT INJECTION SYSTEM - A fuel pump for a direct injection system having: at least one pumping chamber, a piston which is slidingly mounted inside the pumping chamber in order to cyclically vary the volume of the pumping chamber, an intake duct connected to the pumping chamber and regulated by an inlet valve, a delivery duct connected to the pumping chamber and regulated by a one-way valve that only allows outgoing fuel flow from the pumping chamber, and an annular seal, which is placed in a seat made below the pumping chamber around a lower portion of the piston and has the function of preventing fuel leakage along the side wall of the piston. | 05-12-2011 |
| 20110103985 | FUEL PUMP WITH AN IMPROVED DAMPING DEVICE FOR A DIRECT INJECTION SYSTEM - A fuel pump for a direct injection system having: at least one pumping chamber; a piston which is mounted sliding inside the pumping chamber in order to vary cyclically the volume of the pumping chamber; an intake duct connected to the pumping chamber and regulated by an inlet valve; a delivery duct connected to the pumping chamber and regulated by a one-way delivery valve which allows exclusively a fuel flow outgoing from the pumping chamber; and a damping device, which is placed along the intake duct upstream of the inlet valve, and comprises at least one elastically deformable damping body that has internally a closed chamber filled with pressurized gas and composed of two metal plates cup shaped and welded together at their annular edges by an annular weld without interruptions. | 05-05-2011 |
| 20110031838 | ELECTRIC MACHINE WITH SINGLE STATOR AND TWO MUTUALLY INDEPENDENT ROTORS, AND ROAD VEHICLE PROVIDED WITH SAID ELECTRIC MACHINE - An electric machine provided with: a stator, equipped with a single stator winding; at least two shafts, which are independent of one another and are mounted so that they can turn; at least two rotors, which are independent of one another, are magnetically coupled to the stator, and are mounted on the shafts; and a single electronic power converter, which is connected to the stator winding for supplying the stator winding itself with a total electric current. | 02-10-2011 |
| 20110010078 | METHOD FOR THE SELF-LEARNING OF THE VARIATION OF A NOMINAL FUNCTIONING FEATURE OF A HIGH PRESSURE VARIABLE DELIVERY PUMP IN AN INTERNAL COMBUSTION ENGINE - A method for the self-learning of the variation of a nominal functioning feature of a high pressure pump in an internal combustion engine, which pump feeds fuel to a common rail and is controlled by a solenoid valve depending on an objective pressure inside the common rail and by using the nominal functioning feature which provides a delivery of fuel; in cut-off conditions of the engine, the method includes determining the value of the pressure leaks due to blow-by in the common rail; measuring the real pressure of the fuel inside the common rail; actuating the high pressure pump by controlling the solenoid valve with a predetermined closing angle; measuring the real pressure of the fuel inside the common rail again; determining a pressure deviation between the real pressure and an expected pressure of the fuel, and correcting the nominal functioning feature according to this deviation. | 01-13-2011 |
| 20100271720 | SYSTEM AND METHOD FOR DRIVING ASSISTANCE AT ROAD INTERSECTIONS - Described herein is a system and a method for the automatic adjustment of rear-view devices of a vehicle travelling a lane or road, based on shooting scenes representing an environment surrounding the vehicle in the travel direction and on the identification of at least one from among a collection of predetermined shapes and indicia along the road indicating a road intersection between the lane or road traveled by the vehicle and an incident lane or road, whereby the movement of at least one rear-view device is actuated for representing to the driver a rear and side scene with respect to the vehicle comprising the incident lane or road. | 10-28-2010 |
| 20100242922 | DIRECT-INJECTION SYSTEM FUEL PUMP WITH A MAXIMUM-PRESSURE VALVE - A direct-injection system fuel pump having: at least one pumping chamber; a piston mounted to slide inside the pumping chamber to cyclically alter the volume of the pumping chamber; an intake channel connected to the pumping chamber and regulated by an intake valve; a delivery channel connected to the pumping chamber and regulated by a one-way delivery valve that only permits fuel flow from the pumping chamber; and a drain channel regulated by a one-way, maximum-pressure valve, which opens when the fuel pressure in the drain channel exceeds a threshold value, and which has a shutter movable along the drain channel, a valve seat engaged in fluidtight manner by the shutter, and a spring calibrated to push the shutter into a position engaging the valve seat in fluidtight manner. | 09-30-2010 |
| 20100218749 | Intake Manifold With Integrated Canister Circuit For A Supercharged Internal Combustion Engine - An intake manifold with integrated canister circuit for a supercharged internal combustion engine; the intake manifold is provided with: a tubular body in which a plenum is defined; a sorting chamber, which is obtained in a wall of the tubular body; a canister solenoid valve, which is arranged in the sorting chamber and is adapted to adjust the introduction of gasoline vapours into the sorting chamber itself; a first pipe, which is obtained in the wall of the tubular body, puts the sorting chamber into communication with the plenum, and defines a first branch of a recovery pipe; a second pipe, which is obtained in the wall of the tubular body and defines an initial portion of a second branch of the recovery pipe; a first one-way valve which is arranged in the sorting chamber in correspondence of the first pipe and allows, through the first pipe, only a flow towards the plenum; a second one-way valve which is arranged in the sorting chamber in correspondence of the second pipe and allows, through the second pipe, only a flow through the intake pipe. | 09-02-2010 |
| 20100160112 | METHOD OF CONTROLLING AN ELECTRO-ACTUATED CLUTCH FOR DETERMINING THE CLOSING POSITION - A method of controlling an electro-actuated clutch in an internal combustion engine, which clutch is provided with a clutch mechanism, an electric motor for actuating the clutch mechanism, and a mechanical transmission which is interposed between the electric motor and the clutch mechanism; the method includes the steps of establishing, during a manufacturing phase of the system, a detachable connection in the mechanical transmission, wherein a first element simply rests on a second element to divide the electro-actuated clutch into a first part, arranged upstream of the detachable connection, and a second part arranged downstream of the detachable connection; reading a first position signal generated by a first position sensor mechanically connected to a point of the first portion of the electro-actuated clutch; reading a second position signal generated by a second position sensor mechanically connected to a point of the second portion of the electro-actuated clutch; comparing the first position signal with the second position signal; recognizing the position in which the first position signal starts differing from the second position signal; and estimating the closing position of the clutch mechanism coinciding with the position in which the first position signal starts differing from the second position signal. | 06-24-2010 |
| 20100146957 | Exhaust System Of An Internal Combustion Engine - An exhaust system of an internal combustion engine and provided with: at least one first high acoustic attenuation path having a first inlet opening; at least one second low acoustic attenuation path having a second inlet opening; and at least one control valve, which is arranged at the second inlet opening of the second path to control the flow of the exhaust gases along the second path. | 06-17-2010 |
| 20100132500 | THROTTLE CONTROL INTEGRATING AN ANGULAR POSITION SENSOR - A throttle control provided with: a twist grip, which has a tubular shape and is centrally perforated to be fitted about a tubular handlebar so as to rotate with respect to the tubular handlebar; and an angular position sensor, which is adapted to read the angular position of the twist grip and has at least one rotor, which is supported by the twist grip to rotate along with the twist grip and is adapted to affect an electric and/or magnetic field, and at least a reader, which is adapted to be mounted in a fixed position inside the tubular handlebar so as to be arranged close to the rotor, and is adapted to remotely and contactlessly read the orientation of the rotor. | 06-03-2010 |
| 20100126299 | HANDLE CONTROL PROVIDED WITH AN ANGULAR POSITION SENSOR - A handle control provided with: a supporting body, which is provided with a central through hole and is adapted to be fitted about a handlebar to be rigidly fixed to the handlebar; a twist grip, which has a tubular shape, is rotationally carried by the supporting body and is centrally perforated to be fitted about the handlebar so as to rotate with respect to the handlebar; and an angular position sensor, which is adapted to read the angular position of the twist grip; the angular position sensor has at least one rotor, which is supported by the twist grip to rotate along with the twist grip and is adapted to influence an electric field; and at least one reader, which is carried in a stationary position by the supporting body, is arranged close to the rotor, and is suitable for a contactless and remote reading of the orientation of the rotor. | 05-27-2010 |
| 20100126291 | DOUBLE-CLUTCH GEARBOX - A double-clutch gearbox includes two primary shafts and at least one secondary shaft. Each of a plurality of gear pairs mechanically couples the primary shaft to the secondary shaft and defines a respective gear. Each gear pair includes a primary gear mounted to the primary shaft and a secondary gear, which is mounted to the secondary shaft and permanently meshes with the primary gear. Synchronizers coaxially mounted to a shaft are coupled to a gear of at least one gear pair and adapted to be actuated to engage the gear with the shaft. Forks that actuate the synchronizers are movably mounted and have corresponding catches. A single control shaft is rotationally mounted about and can be slid axially along a longitudinal axis. A single gear actuator is connected to the control shaft to rotate the control shaft about and axially displace the control shaft along the longitudinal axis. | 05-27-2010 |
| 20100106393 | METHOD OF MICROPHONE SIGNAL CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method of controlling an internal combustion engine having at least one cylinder defining a variable-volume combustion chamber; and a rotating crankshaft powered by a piston sliding inside the cylinder; the control method including the steps of: determining a recording window expressed in engine angle degrees and having a start engine angle and a stop engine angle; acquiring and memorizing the intensity of sound pressure waves, generated by the internal combustion engine as a function of an engine angle, by means of at least one sound pressure sensor and within the recording window; and estimating the value of at least one operating parameter of a part of the internal combustion engine by analysing the intensity of the sound pressure waves in the recording window. | 04-29-2010 |
| 20100045134 | MULTIPHASE SYNCHRONOUS ELECTRICAL MACHINE FOR CONVERTING KINETIC ENERGY INTO ELECTRICAL ENERGY AND ELECTRICAL ENERGY INTO KINETIC ENERGY ON BOARD A TRANSPORT VEHICLE, METHOD FOR ASSEMBLING THE ELECTRICAL MACHINE, AND TRANSPORT VEHICLE PROVIDED WITH SAID ELECTRICAL MACHINE - A multiphase synchronous electrical machine for converting kinetic energy into electrical energy and electrical energy into kinetic energy has a rotor extending along an axis, and a stator, which is provided with a stator pack having slots and with an electrical winding, which extends in part in the slots and in part in a position corresponding to two heads arranged on opposite sides of the stator pack and has bars housed in the slots and connected to one another in a position corresponding to the heads and connection plates, which are welded to the bars, are packed with respect to one another and to the stator pack in an axial direction and are shaped in such a way as to define a prolongation of the stator pack. | 02-25-2010 |
| 20100045133 | MULTIPHASE SYNCHRONOUS ELECTRICAL MACHINE FOR CONVERTING KINETIC ENERGY INTO ELECTRICAL ENERGY AND ELECTRICAL ENERGY INTO KINETIC ENERGY ON BOARD A TRANSPORT VEHICLE - A multiphase synchronous electrical machine for converting kinetic energy into electrical energy and electrical energy into kinetic energy has a rotor, extending along an axis, and a stator, which is provided with a stator pack having slots and with an electrical winding, which extends in part in the slots and in part at two heads arranged on opposite sides of the stator pack and which has bars, housed in the slots and connected to one at the heads, connection plates, each of which has: a main body having at least two seats for housing the bars; and an arm, which is set between the two seats and extends from the main body towards the axis. | 02-25-2010 |
| 20090277162 | INJECTION METHOD AND DEVICE FOR INJECTING A REDUCING SUBSTANCE INTO AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE - An injection method and device for injecting a reducing liquid additive into an exhaust system of an internal combustion engine; the injection device in provided with: a tank containing the reducing liquid additive; a reversible pump connected to the tank; an injector which is connected to the pump by means of a feeding pipe and is adapted to inject the reducing additive into the exhaust pipe; and a vent valve which is arranged along the feeding pipe upstream of the injector to put the feeding pipe into communication with the atmosphere. | 11-12-2009 |
| 20090261184 | Fuel injector with direct shutter actuation for internal combustion engines - A fuel injector for internal combustion engines provided with a fuel feeding channel, the feeding channel having an axis and an injection outlet; an injection valve to control the outlet; an injection valve having a shutter arranged inside the feeding channel to define, within the feeding channel, a first fuel introduction section, the shutter being movable from and to a closing position along the feeding channel, which has a second section; and an annular sealing seat arranged on the feeding channel upstream of the outlet; an elastic member for normally keeping the shutter in the closing position; an actuator mechanism connected to the shutter to displace the shutter itself from the closing position and to an opening position of the outlet; and a hydraulic resistance that is provided along the feeding channel upstream of the annular sealing seat to balance the forces acting upon the shutter. | 10-22-2009 |
