Patent application number | Description | Published |
20080211235 | Device For Controlling a Heat Engine Starter, Such as That of a Motor Vehicle, and Starter Comprising One Such Device - The invention relates to a device for controlling a starter for a heat engine that is equipped with an electric motor having a field coil with several windings and an armature winding, both of which are mounted in series, comprising a power contact which is equipped with terminals, one of said terminals being connected to the positive terminal (+Bat) of a battery and the other terminal being connected to the field coil having several windings. The inventive device comprises first means which, in a first phase upon closure of the power contact, activate part of the windings of the field coil and second delayed-action means which, in a second phase during which the power contact is always closed, activate at least a large number of the windings of the coil. The invention is intended for the heat engine starter of a vehicle. | 09-04-2008 |
20090267553 | UNKNOWN - A starting device for an internal combustion engine, especially that of a motor vehicle, comprises:
| 10-29-2009 |
20100031911 | DEVICE FOR STARTING AN INTERNAL COMBUSTION ENGINE, PARTICULARLY A DIESEL ENGINE - A method and a device for starting a diesel engine with no heater plugs, comprising pistons and cylinders defining combustion chambers into which gases intended to participate in combustion are admitted, in which method a strategy is adopted whereby the gases present in the chambers are heated up in such a way as to raise them to a minimum temperature within the entire volume defined by the chambers when the pistons are in the position of maximum compression or close to that position. The gases are heated by compressing the air in the cylinders using an electrical machine, or using a heating system in the intake. | 02-11-2010 |
20100127590 | ROTATING ELECTRICAL MACHINE, IN PARTICULAR FOR THE STARTER OF AN AUTOMOTIVE VEHICLE - A DC electric rotating machine mainly for the starter of an automotive vehicle, including: a stator having a magnetised structure with permanent magnetisation and extending along the circumference of the stator; a rotor; a set of brushes adapted for the electric supply of the rotor by switching the electrical current in sections of the rotor; wherein the magnetised structure ( | 05-27-2010 |
20100176675 | ELECTRIC ROTATING MACHINE, MAINLY FOR THE STARTER OF AN AUTOMOTIVE VEHICLE - A DC electric rotating machine, mainly for the starter of an automotive vehicle. The machine includes a stator including a wound structure forming a plurality of poles extending along the circumference of the stator, a rotor, and a set of brushes adapted for the electric supply of the rotor by commutation of the electric current in sections of the rotor. The wound structure of the stator includes a plurality of slots between two central parts of consecutive poles of the stator, these slots being formed in a magnetic body of the stator. At least one of the slots including at least one conducting segment forming a winding of an electrical coil. | 07-15-2010 |
20100176677 | ELECTRIC ROTATING MACHINE WITH SALIENT POLES - A DC electric rotating machine, such as a starter of an automotive vehicle, includes a stator with salient poles having at least four poles distributed uniformly over the circumference of the stator, a rotor disposed inside the stator, a set of brushes adapted for the electric supply of the rotor, and at least two geometrically opposed salient poles. Each pole includes at least one substantially radial slot in a plane parallel to the axis of rotation of the rotor and preferably passes through the axis of the rotor. By minimizing the reaction fields of the armature, utilization of the magnetic material of the parts of the stator is balanced and a harmful armature reaction effect, which increases saturation of the polar parts of the inductor and which leads to reduction in the driving magnetic torque, is mitigated. | 07-15-2010 |
20110210634 | ROTATING ELECTRICAL MACHINE, IN PARTICULAR FOR A MOTOR VEHICLE STARTER - A direct-current rotating electrical machine, in particular for a motor vehicle starter. The machine includes a stator comprising a magnetized structure with permanent magnetization, extending along a circumference of the stator, a rotor, and a group of brushes arranged to allow the electrical supply of the rotor by switching the electrical current in sections of the rotor. The magnetized structure of the machine includes a plurality of main magnets and a plurality of auxiliary magnets, each arranged between two main magnets. The auxiliary magnets have a smaller angular extent and/or radial thickness than the main magnets. The magnetization vector in at least one of the main and auxiliary magnets varies continuously or in steps, at least locally taking a direction other than radial and orthoradial directions. | 09-01-2011 |
20130134822 | ELECTRICAL MACHINE COMPRISING A ROTOR PROVIDED WITH A WINDING FOR FACILITATING SWITCHING AND RELATED STARTER - A machine having a wound rotor ( | 05-30-2013 |
20130207488 | ROTATING ELECTRICAL MACHINE, IN PARTICULAR FOR A MOTOR VEHICLE STARTER - A rotating electric machine comprising a rotor ( | 08-15-2013 |
20130342134 | STARTER CIRCUIT FOR A MOTOR VEHICLE COMPRISING A DEVICE FOR STEPPING-UP THE BATTERY VOLTAGE, AND STARTER EQUIPPED WITH THE CIRCUIT - The starter motor circuit ( | 12-26-2013 |
20140091665 | ELECTRIC ROTATING MACHINE, MAINLY FOR STARTER OF AUTOMOTIVE VEHICLE - A DC electric rotating machine, mainly for the starter of an automotive vehicle. The machine includes a stator including a wound structure forming a plurality of poles extending along the circumference of the stator, a rotor, and a set of brushes adapted for the electric supply of the rotor by commutation of the electric current in sections of the rotor. The wound structure of the stator includes a plurality of slots between two central parts of consecutive poles of the stator, these slots being formed in a magnetic body of the stator. At least one of the slots including at least one conducting segment forming a winding of an electrical coil. | 04-03-2014 |
20150028600 | METHOD FOR LIMITING AN INRUSH CURRENT IN AN ELECTRICAL POWER CIRCUIT OF A MOTOR VEHICLE STARTER, AND CORRESPONDING ELECTRICAL CIRCUIT, CURRENT LIMITER AND STARTER - A method for limiting an inrush current, which is implemented in an electrical power circuit ( | 01-29-2015 |
Patent application number | Description | Published |
20090129258 | TRANSMISSION OF SIGNALLING INFORMATION IN AN OFDM COMMUNICATION SYSTEM - An Orthogonal Frequency Division Multiplexing, OFDM, transmitter comprises a signalling data generator ( | 05-21-2009 |
20090262676 | COMMUNICATION SYSTEM AND METHOD OF OPERATION THEREFOR - A communication system comprises a set of user equipments which are arranged to simultaneously transmit a signal over an air interface to a base station. Each of the transmitted signals comprises a data stream encoded by a space time block code and transmitted on multiple antennas. Specifically, an Alamouti code may be used. The base station generates a received data stream for each of the set of user equipments by joint space time block code decoding of the signals from the set of user equipments. The invention may provide improved performance and increased capacity and may in particular provide efficient multi user operation for a system using space time block codes. The user equipments may be scheduled in response to cross interference metrics reflecting a cross interference between simultaneously transmitting user equipments. | 10-22-2009 |
20100086072 | COMMUNICATION SYSTEM AND METHOD OF OPERATION THEREFOR - A Multiple In Multiple Out (MIMO) communication system comprises an air interface scheduler for allocating air interface resource to a plurality of user equipments transmitting to a MIMO receiver. A vector processor of the scheduler determines a receive equalizer vector for the MIMO receiver for each of a plurality of user equipments in response to a channel matrix for the user equipment. The vector processor may specifically apply singular value decomposition to the channel matrix to determine the receive equalizer vector. An orthogonality processor then determines orthogonality measures between receive equalizer vectors for different sets of user equipments. A selection processor selects a set of user equipments to be allocated a shared MIMO air interface resource in response to the orthogonality measures. By scheduling in response to orthogonality of receiver operations, a reduced interference and/or reduced receiver complexity can be achieved. | 04-08-2010 |
20100111220 | METHOD AND APPARATUS USING SOUNDING PPDUs TO PROVIDE RANGE EXTENSION TO IEEE 802.11n SIGNALS - A wireless transmitter includes a stream parser for generating a plurality of spatial streams from a digital signal and a space time block coder (STBC) for mapping each of the spatial streams to a plurality of space-time streams that each include data and a preamble for estimating a channel transfer function. The transmitter also includes a spatial mapper for spatially expanding each of the space-time streams by applying a spatial expansion matrix to data and to first training symbols used in the preamble to probe a channel experienced by the data and by applying an extension matrix to second training symbols used in the preamble to probe at least one additional dimension of the channel to enable use of beamforming to achieve range extension The spatial expansion matrix and the extension matrix form an overall matrix that has at least two orthogonal columns with different norms. The wireless transmitter also includes an analog front end for modulating the spatially expanded space-time streams onto a wireless carrier. | 05-06-2010 |