Engine Control Patents (Class 290/34)
  • Patent number: 10205373
    Abstract: The present invention relates to the technical field of design and manufacture of magnetic couplings and provides a self-alignment protection device for permanent-magnet coupling, the self-alignment protection device comprises a first rotor and a second rotor respectively in fixedly connection with a load shaft (8) and a driving shaft (9), the first rotor and the second rotor being respectively mounted with permanent magnets that are mutually coupled to transmit torque, the first rotor and the second rotor are respectively configured with an inner conical surface and an outer conical surface that are coaxial and have mutually matching tapers, the self-alignment protection device further comprises an axial adjustment mechanism for adjusting the relative axial position between the first rotor and the second rotor. This technical solution solves the technical problem that the existing magnetic couplings are inconvenient to install and adjust.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: February 12, 2019
    Assignee: JIANGSU MAGNET VALLEY
    Inventors: Junfeng Xu, Fuxing Qi
  • Patent number: 10060329
    Abstract: A vehicle has a front grille, engine, engine compartment, power storage device, temperature sensor, shutter, heater and controller. The device can be electrically charged from an external power supply. The temperature sensor detects engine coolant temperature. The shutter is disposed in a transfer pathway of air drawn into the engine compartment via the front grille, and is switched between closed and open states. The heater is able to generate heat when receiving the electric power, raising the coolant temperature. The controller starts the engine when the coolant temperature is lower than a startup threshold value, drives the heater when the coolant temperature is lower than a first threshold value equal to or higher than the startup threshold value, until the coolant temperature becomes equal to or higher than the first threshold value, and drives the shutter to place the shutter in the closed state while the heater is driven.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: August 28, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Murata, Shingo Kato
  • Patent number: 8912675
    Abstract: The present invention relates to a method of reactive power regulation in a wind turbine comprising a local reactive power control system adapted to operate in a central control mode and a local control mode, a method of reactive power regulation in a wind park connected to an electrical grid, and to a wind park.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: December 16, 2014
    Assignee: Alstom Wind, S.L.U.
    Inventors: Montserrat Mata Dumenj├│, Jordi Carulla Piera, Oriol Gomis Bellmunt
  • Publication number: 20140291987
    Abstract: There is described a method for controlling an engine and a system architecture for an engine. The system architecture comprises a first electric machine having a single rotor dual stator configuration for operating as a starter-generator for the engine; a second electric machine having a single rotor dual stator configuration for operating as a motor; a dual channel motor drive unit coupled to the second electric machine; a dual channel power control unit coupled to the first electric machine and the motor drive unit; a dual channel full authority digital engine control (FADEC) coupled to the dual channel power control unit and the dual channel motor drive unit; and at least two accessories coupled to the second electric machine and driven by motive power from the single rotor of the second electric machine.
    Type: Application
    Filed: February 25, 2013
    Publication date: October 2, 2014
    Applicant: PRATT & WHITNEY CANADA CORP.
    Inventor: PRATT & WHITNEY CANADA CORP.
  • Patent number: 8742605
    Abstract: A method of starting an aircraft engine is provided. The method includes providing motive power from a generator for starting an engine during an engine start mode and deriving electrical power by way of the generator from rotation of the engine during a generate mode, transmitting the motive power from the generator to the engine during the engine start mode by way of a constant speed drive (CSD) and regulating a frequency of the electrical power output from the generator during the generate mode by way of the CSD and coupling a generator and CSD controller (GCC) to the generator and the CSD and operating the generator and the CSD by the GCC to execute at least the engine start mode and the generate mode.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: June 3, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Matthew L. Wilhide, Glenn C. Lemmers, Jr.
  • Patent number: 8598722
    Abstract: An electrical generator utilizing two internal combustion engine having an expanded range of power output is disclosed. A primary internal combustion engine is coupled to the magnet rotor assembly. The primary engine is operated solely in a lower power range. A secondary engine, coupled to a coil assembly is locked in place in such lower power range to make the coil assembly stationary. In a higher power range, that overlaps the lower power range, the secondary engine is unlocked and operated to rotate in a counter-rotating direction with respect to the first engine. The secondary engine can be started by operating the generator (consisting of the magnet rotor assembly and the coil assembly) as a motor by appropriate application of current.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: December 3, 2013
    Assignee: EcoMotors International
    Inventors: Peter Hofbauer, Adrian Nicolaie Tusinean, Tyler R. Garrard, Patrick James McCleer
  • Publication number: 20130204506
    Abstract: An engine system for starting a gas turbine engine is provided. The system includes a starter generator coupled to the gas turbine engine and configured to provide torque to the gas turbine engine and a controller coupled to the starter generator and configured to provide a command signal to the starter generator. The starter generator provides the torque to the gas turbine engine based on the command signal, and the controller is configured to command the starter generator at a dwell speed until ignition.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 8, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Timothy Ertz, Thomas Nesdill, Mike Baron, Paul Otto
  • Publication number: 20130147192
    Abstract: A method of supplying mechanical power to an operating gas turbine engine includes supplying mechanical power from the operating gas turbine engine to a starter-generator, to thereby generate electrical power using the starter-generator. One or more operational parameters of the operating gas turbine engine are sensed and, based on the one or more sensed operational parameters, electrical power is selectively supplied to the starter-generator to thereby generate and supply mechanical output power to the operating gas turbine engine.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 13, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Kevin Condon, Dwight Bozarth, Kendall Keith Dalton, Cristian Anghel, Ernest Kurschat
  • Publication number: 20130076035
    Abstract: An exemplary turbomachine starter assembly includes a motor-generator that selectively operates in a motor mode or a generator mode. The motor-generator provides a rotational input to a turbomachine when operating in the motor mode. The motor-generator generates a supply of electrical power when operating in the generator mode. The supply of electrical power is used to power accessories of the turbomachine.
    Type: Application
    Filed: September 27, 2011
    Publication date: March 28, 2013
    Inventors: Andreas C. Koenig, Adam M. Finney
  • Publication number: 20120313372
    Abstract: A method and system for starting and operating an electrically driven load, e.g. a compressor or pump, by power supply from a mechanical driver, e.g. a turbine or combustion engine, whereby the load is mechanically connected to a first electrical machine, and the mechanical driver is mechanically connected to a second electrical machine. The first electrical machine is electrically interconnected to the second electrical machine at a standstill or when the first and or second machine have low speed. In an acceleration phase, the first electrical machine is accelerated by accelerating the second electrical machine with the mechanical driver. When the first electrical machine has reached a predefined rotational speed, the first machine is synchronized with a local electrical power network and connected it to that network.
    Type: Application
    Filed: August 20, 2012
    Publication date: December 13, 2012
    Applicant: Aker Engineering & Technology AS
    Inventors: Ole-Johan Bjerknes, Trygve Lund
  • Publication number: 20120223531
    Abstract: A power plant includes an engine coupled to a first generator and a second generator. The first generator includes a synchronous generator wherein the first generator is configured to provide reactive power to the second generator. The second generator includes an induction generator. One or more sensors are configured to measure a current output and a voltage output of the first and second generators, and a controller is configured to determine a power factor for the power plant based on the measured current output and voltage outputs. Based on the determined power factor, the controller adjusts the reactive power provided from the first generator to the second generator such that the power factor is maintained at a predetermined value.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 6, 2012
    Applicant: GOOGLE INC.
    Inventors: Alec Brooks, Zvi Gershony
  • Patent number: 8159078
    Abstract: A portable generator system having a generator for generating an electrical output signal, an internal combustion engine for driving the generator, a starter for starting the internal combustion engine, an alternator for generating an AC signal for powering a charger assembly, a battery pack, and a charger subsystem. The charger system has a charger assembly that receives the AC signal and generates a DC charging signal for recharging the battery pack. The charger assembly has a first switch and a second switch. The first switch is used to apply an output of the battery to energize the starter. The second switch, when placed in a Start position, enables current from the battery pack to energize the starter while inhibiting the application of the DC charging signal to the battery pack. When placed in the Charge position, the second switch inhibits the battery pack output from energizing the starter while enabling the DC charging signal to be applied to the battery pack.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: April 17, 2012
    Assignee: Black & Decker Inc.
    Inventors: Robert A. Usselman, Dalton E. McFarland, Jeffrey P. Grant
  • Patent number: 8108089
    Abstract: When the engine being in an idling operation and it is in a running state (S410, S420), a value 1 is set to a learning-determination flag F1 (step S460) and the learning of the idling control value is performed when the transmission is in the state of Lo gear and it is not immediately after a Hi-Lo shifting has been performed (S430 to S450).
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: January 31, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiko Hasegawa, Toshio Inoue, Daigo Ando, Mamoru Tomatsuri, Keita Fukui
  • Publication number: 20110215575
    Abstract: An electrical generator utilizing two internal combustion engine having an expanded range of power output is disclosed. A primary internal combustion engine is coupled to the magnet rotor assembly. The primary engine is operated solely in a lower power range. A secondary engine, coupled to a coil assembly is locked in place in such lower power range to make the coil assembly stationary. In a higher power range, that overlaps the lower power range, the secondary engine is unlocked and operated to rotate in a counter-rotating direction with respect to the first engine. The secondary engine can be started by operating the generator (consisting of the magnet rotor assembly and the coil assembly) as a motor by appropriate application of current.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 8, 2011
    Applicant: EcoMotors International, Inc.
    Inventors: Peter Hofbauer, Adrian Tusinean, Tyler Garrard, Patrick McCleer
  • Patent number: 7848858
    Abstract: Vehicular drive system which is small-sized and/or improved in its fuel economy. A power distributing mechanism 16, which is provided with a differential-state switching device in the form of a switching clutch C0 and a switching brake B0, is switchable by the switching device between a differential state (continuously-variable shifting state) in which the mechanism is operable as an electrically controlled continuously variable transmission, and a fixed-speed-ratio shifting state in which the mechanism is operable as a transmission having a fixed speed ratio or ratios. The power distributing mechanism 16 is placed in the fixed-speed-ratio shifting state during a high-speed running of the vehicle or a high-speed operation of engine 8, so that the output of the engine 8 is transmitted to drive wheels 38 primarily through a mechanical power transmitting path, whereby fuel economy of the vehicle is improved owing to reduction of a loss of conversion of a mechanical energy into an electric energy.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: December 7, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Atsushi Tabata, Yutaka Taga
  • Patent number: 7804263
    Abstract: A dynamoelectric machine that has at least one rotor component proximate a stator that is axially displaceable from the stator in response to pressure of lubrication oil delivered to its lubrication system has a system for changing axial displacement of each axially displaceable rotor component from the stator to cause a corresponding change in rotor-stator magnetic flux interaction, comprising: a hydraulic pump for generating a flow of lubrication oil; and means for regulating the flow of lubrication oil to the machine to develop a corresponding lubrication oil pressure that controls axial displacement of each axially displaceable rotor component.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: September 28, 2010
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Richard A. Himmelmann, Mohammad Shahamat
  • Patent number: 7804180
    Abstract: 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.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: September 28, 2010
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Nicolas Labbe, Christian Mornieux
  • Publication number: 20090315328
    Abstract: In a method of operating a starting system coupled to a crankshaft of a vehicle engine, during engine starting, torque supplied by the starting system to the engine is continuously adjusted to provide more than two levels based on operating conditions of the vehicle or engine.
    Type: Application
    Filed: June 24, 2008
    Publication date: December 24, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Ajith Kuttannair Kumar
  • Patent number: 7527030
    Abstract: A control apparatus for an internal combustion engine that is startable by a motor driven by electric power supplied by an electric storage device, includes: a starting mode selection device for selecting either a first mode or a second mode as starting mode of the internal combustion engine; a control device for setting an output mode during outputting the electric power to the motor from the electric storage device, according to a result selected by the starting mode selection device, wherein the control device is adapted to set a flat mode, corresponding to the first mode, in which a predetermined electric power is continuously output and a pulse mode, corresponding to the second mode, in which electric power that varies with amplitude greater than a predetermined amplitude is output.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: May 5, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yukihiro Fukushima, Yutaka Tamagawa
  • Publication number: 20090091133
    Abstract: A method of starting a gas turbine engine with a synchronous multiphase alternating current (AC) dynamoelectric machine with a rotor and a stator that allows re-engagement of a starting operation at non-zero rotor speeds comprises the steps of: applying electrical excitation to the rotor; measuring electromotive force (EMF) generated in the stator; determining rotor speed, acceleration and position from the measured EMF by sensorless means; initiating closed-loop sensorless position controlled power to the stator if the determined rotor speed is at least a pre-determined minimum closed-loop sensorless re-engagement speed; initiating open-loop position controlled power to the stator if the determined rotor speed is less than the pre-determined minimum closed-loop sensorless re-engagement speed but at least a predetermined minimum open-loop re-engagement speed and the determined rotor acceleration is no more than a pre-determined maximum open-loop re-engagement acceleration; and initiating open-loop zero-speed
    Type: Application
    Filed: October 4, 2007
    Publication date: April 9, 2009
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Donal E. Baker, Gary L. Miles, Raymond J. Beckmann, JR.
  • Patent number: 7508086
    Abstract: An aircraft starting and generating system includes a starter/generator that includes a main machine, an exciter, and a permanent magnet generator. The system also includes an inverter/converter/controller that is connected to the starter/generator and that generates AC power to drive the starter/generator in a start mode for starting a prime mover of the aircraft, and that converts AC power, obtained from the starter/generator after the prime mover have been started, to DC power in a generate mode of the starter/generator. The exciter includes a stator and a rotor, and wherein the exciter rotor includes a three-phase AC winding.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: March 24, 2009
    Assignee: General Electric Company
    Inventors: Hao Huang, David Karipides, Mohamed Abbas, David Tsui
  • Publication number: 20080315584
    Abstract: An electromechanical power transfer system that transfers power between a direct current (DC) electrical power system and a prime mover, comprises: a permanent magnet machine (PMM) comprising a permanent magnet (PM) rotor that rotates a drive shaft of the prime mover, a stator with a multiphase alternating current (AC) winding coupled to the AC bus for developing a rotating magnetic field with a magnetic flux path that causes rotation of the PM rotor and a control coil with a winding that has a configuration to generate a magnetic field with flux that varies the reactance of the stator winding upon the application of current through the control coil; a plurality of AC current sensors for sensing the current in each phase of the multi-phase AC bus and generating respective AC bus current signals that represent the current level of each phase; an average current detector that receives the AC bus current signals and generates a respective current load feedback signal; a back electromotive force (emf) detector co
    Type: Application
    Filed: June 20, 2007
    Publication date: December 25, 2008
    Inventors: Gregory I. Rozman, Matthew L. Wilhide, Arthur A. Pershall
  • Patent number: 7456509
    Abstract: The invention is directed toward methods for operating a series hybrid vehicle in a manner that responds to the operator's demand for power output, while maximizing engine efficiency and minimizing disruptions in vehicle drivability. According to principles of the present invention, when the driver of a series hybrid vehicle makes a demand for power output, whether the secondary power source(s) is supplied with secondary energy stored in an energy storage device(s), direct input energy generated by an engine(s), or both, depends on the amount of available secondary energy stored in the vehicle's secondary storage device(s) alone, and in combination with vehicle speed. During the time that the engine is used to generate secondary energy, the power efficiency level at which the engine is operated also depends on the vehicle speed and the amount of available secondary energy stored in the vehicle's secondary storage device alone, and in combination with vehicle speed.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: November 25, 2008
    Assignee: The United States of America as represented by the Administrator of the U.S. Environmental Protection Agency
    Inventor: Charles L. Gray, Jr.
  • Publication number: 20080157527
    Abstract: Methods and apparatus for controlling electrical energy in an engine-driven vehicle are provided. The vehicle includes a battery, a propulsive engine, and a starter-generator assembly coupled to the engine of the vehicle. The method includes supplying an electrical current from the battery to a starting winding of the starter-generator, supplying an electrical current to the battery from a generating winding of the starter-generator, and controlling the voltage of the starter-generator using a unitary, voltage regulator integrated with the starter-generator.
    Type: Application
    Filed: December 29, 2006
    Publication date: July 3, 2008
    Inventors: Michael Lewis Jones, James Edward O'Bryan, Lokesh Ramanna
  • Publication number: 20080129049
    Abstract: A method is employed for starting an internal combustion engine in a hybrid vehicle drive which is driven by an electric motor. A speed of the internal combustion engine is adjusted to a target speed. The internal combustion engine speed exceeds the target speed over a predefined time by a predetermined speed differential.
    Type: Application
    Filed: November 19, 2007
    Publication date: June 5, 2008
    Applicant: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Nils Sauvlet, Marco Fleckner, Markus Goehring, Dieter Kraxner
  • Patent number: 7319307
    Abstract: Power balancing techniques for a synchronous power generation system are provided. One exemplary method for balancing power in a synchronous generator system includes determining an output power characteristic of a synchronous generator driven by a prime mover and comparing the characteristic to a value derived from the output power of a plurality of synchronous generators. The method also includes providing a correction signal to the synchronous generator to modify the output power produced by that generator. A synchronous power generation system having a plurality of synchronous generators driven by a common prime mover is also provided.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: January 15, 2008
    Assignee: General Electric Company
    Inventors: Herman Wiegman, Luis Jose Garces
  • Patent number: 7291934
    Abstract: A machine includes an electrical power source, which may include a mechanical power source and an electric generator drivingly connected to the mechanical power source. The machine may also include one or more power loads connected to the electric generator. Additionally, the machine may include power-supply controls, which may be configured to execute a control method. The control method may include receiving inputs relating to conditions of operation of the machine. Additionally, the control method may include controlling the speed at which the mechanical power source drives the electric generator, and the power consumption of one or more of the power loads connected to the electric generator, interdependently.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: November 6, 2007
    Assignee: Caterpillar Inc.
    Inventors: John Jay Bernardi, Timothy Allen Goldammer, Brian Todd Morrical
  • Patent number: 7285869
    Abstract: A method is disclosed for estimating engine power output for an engine in a hybrid electric vehicle powertrain that includes an electric motor and an electric generator. Selected powertrain variables, including electric motor torque and electric generator torque, are used in determining desired vehicle traction wheel torque and an estimated engine power. A calibrated delay in calculating estimated engine power following a time sampling of the values for motor torque and generator torque avoid inertial effects.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: October 23, 2007
    Assignee: Ford Global Technologies, LLC
    Inventors: Fazal Syed, Ming Kuang, John Czubay
  • Patent number: 7253535
    Abstract: A starting system and method for a gas turbine engine applies a change in conventional starter generator torque profiles near the conclusion of the start cycle after the engine self sustaining speed and just prior to starter generator cut-out. By decreasing the applied torque to zero prior to transition from a start mode to a generator mode, both the mechanical and electrical transients are greatly decreased.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: August 7, 2007
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Kurt W. Duesterhoeft
  • Patent number: 7250688
    Abstract: A starter/generator system for a gas turbine engine used in aeronautical applications that couples a single dynamoelectric machine to the gas turbine engine through a torque converter in a starting mode, and engages the engine to the dynamoelectric machine through a mechanical differential in a generating mode after the engine reaches self-sustaining speed and combines the output of the engine and the torque converter to regulate the frequency of AC generated by the dynamoelectric machine within a range of frequencies suitable for on-board electrical equipment by dynamically regulating the flow of hydraulic fluid to the torque converter.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: July 31, 2007
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Scott M. Thomson, Douglas J. Turner
  • Patent number: 7180200
    Abstract: A generator starting system utilizes a portable universal battery pack to start an internal combustion engine of the generator. The system is adapted to utilize any one of a plurality of universal battery packs having outputs of varying voltage. The generator can include a permanent magnet generator having first and second sets of windings. One set of windings generates AC power. The second set of windings is used to drive the PMG as an electric motor using power from the universal battery pack. In an embodiment, the system includes a brushless DC controller that electronically commutates the second set of windings to drive the PMG as a brushless DC motor.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: February 20, 2007
    Assignee: Black & Decker Inc.
    Inventors: Richard T. Walter, Michael K. Forster, Shailesh P. Waikar
  • Patent number: 7042111
    Abstract: The present invention provides a system, method and apparatus for a redundant prime mover system to drive a machine having an engine coupled to the machine, and a motor/generator coupled to the machine and an electrical network connection. The controller operates the engine and the motor/generator in three or four operating modes. The first operating mode drives the machine with the engine. The second operating mode drives the machine with the motor/generator. The third operating mode drives the machine and the motor/generator with the engine such that the motor/generator generates electricity for delivery to the electrical network connection. Alternatively, the third operating mode drives the machine with both the engine and the motor/generator. This alternate operating mode can also be included as a fourth operating mode.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: May 9, 2006
    Assignee: Enevsy Transfer Group, LLC
    Inventors: Darrell Poteet, Kelcy Lee Warren
  • Patent number: 6882909
    Abstract: The method for reducing motor shock of a parallel hybrid electric vehicle equipped with a continuously variable transmission calculates an upper limit of acceleration and an upper limit of jerk of the vehicle based on vehicle speed; calculates a maximum motor torque and a maximum motor torque change rate based on the calculated upper limit of the acceleration and upper limit of the jerk; and generates a motor torque command such that a motor torque is less than the calculated maximum motor torque and a motor torque change rate is less than the calculated maximum motor torque change rate.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: April 19, 2005
    Assignee: Hyundai Motor Company
    Inventor: Se-Jin Lee
  • Patent number: 6833630
    Abstract: A method of operating a generator in a vehicle is provided, which generator is driven by an internal-combustion engine and supplies energy to a vehicle wiring system. For improving vehicle emissions, particularly after a cold start of the internal-combustion engine, the generator is not operated immediately after the starting operation but is operated only after a defined time period such that it supplies energy to the vehicle wiring system.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: December 21, 2004
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Wolf Kiefer
  • Patent number: 6769389
    Abstract: A dual voltage tandem engine start system provides a method for high rotational speed, low emissions, heat-engine start-ups in a hybrid electric vehicle. The system also provides a reliable backup system that can be jumpstarted in an emergency should part of the vehicle's electrical system fail. At start-up, a conventional low voltage starter motor (typically 12-volt) begins turning the heat engine up to a predetermined initial engine RPM. When this RPM is reached, a higher voltage motor/generator, in tandem with the low voltage starter motor, also begins turning the heat engine. Once a second, predetermined heat engine RPM is reached, the low voltage starter motor stops turning the engine, leaving the motor/generator to turn the heat engine to a final engine RPM where it begins fueling and combustion starts. This final engine RPM is sufficiently high to allow a low engine emission start once fueling begins.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: August 3, 2004
    Assignee: General Motors Corporation
    Inventors: Goro Tamai, Tony T. Hoang
  • Patent number: 6759756
    Abstract: A starter includes an electric motor, a pinion gear driven by the electric motor and a magnetic switch having a plunger driven by a magnetic coil. Electric power to be fed to both the electric motor and the magnetic coil is supplied from an on-board battery through a single common input terminal of the starter. The magnetic switch is composed of a main switch through which a full power is supplied to the electric motor and an auxiliary switch through which a limited power is supplied. Upon closing the auxiliary switch, the motor is driven at a low speed and the pinion gear is engaged with a ring gear of the engine. Then, the main switch is closed to thereby crank up the engine with a full power.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: July 6, 2004
    Assignee: Denso Corporation
    Inventors: Tsutomu Shiga, Masami Niimi
  • Patent number: 6664651
    Abstract: This invention is a method and system for determining whether the engine should be running in a Hybrid Electric Vehicle during vehicle idle conditions. Specifically, a controller determines if the vehicle is in idle and if engine operation is necessary. To determine whether engine operation is necessary, the controller determines whether the battery needs charging, whether vacuum needs to be replaced in the climate control system or brake system reservoir, whether the vapor canister requires purging, whether the adaptive fuel tables require fast adapting, whether the engine or catalyst temperatures are unacceptable, or whether the air conditioning has been requested. Once the controller determines that the engine must be running, the controller determines in which control mode to run the engine, either speed control mode (using powertrain controllers) or torque control mode (using a generator and generator controller).
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: December 16, 2003
    Assignee: Ford Motor Company
    Inventors: Stephen John Kotre, Deepa Ramaswamy, Joanne Theresa Woestman, Mary Theresa Breida
  • Patent number: 6559551
    Abstract: A starter device, preferably for cold-starting, for fuel cell systems, including a current generation system, for generating electrical energy, and a gas generation system, for generating H2-rich gas for the current generation system. An internal-combustion engine generates mechanical energy, which can be connected to an air compressor for supplying air to the gas generation system via a drive shaft.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: May 6, 2003
    Assignee: Ballard Power Systems AG
    Inventors: Klaus Graage, Detlef Zur Megede
  • Patent number: 6555927
    Abstract: In a vehicle equipped with a motor generator and a starter, if an ignition key has been switched from OFF to ON, preferably an engine is started by using the starter. However, if the temperature T of the engine is high (B≦T), the engine is started by the motor generator. When the engine is restarted after automatic stop thereof, preferably the engine is started by using the motor generator. However, if the temperature T of the engine is low (T≦A), the engine is started by using the starter. The engine is started by suitably selecting between the starter and the motor generator, whereby it becomes possible to improve responsive characteristics and startability and abate oscillatory noise.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: April 29, 2003
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoto Suzuki, Toshifumi Takaoka, Takashi Suzuki, Daimon Okada
  • Publication number: 20020145286
    Abstract: A method of operating a generator in a vehicle is provided, which generator is driven by an internal-combustion engine and supplies energy to a vehicle wiring system. For improving vehicle emissions, particularly after a cold start of the internal-combustion engine, the generator is not operated immediately after the starting operation but is operated only after a defined time period such that it supplies energy to the vehicle wiring system.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 10, 2002
    Applicant: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Wolf Kiefer
  • Patent number: 6420793
    Abstract: A method of energizing a combined starter/alternator to start an engine in a vehicle including a primary energy storage device and a secondary energy storage device. The method includes the steps of monitoring a charge value on the secondary energy storage device, and activating a converter switching circuit to charge the secondary energy storage device with the primary energy storage device until the charge value is greater than a maximum charge value. Thereafter, an inverter switching circuit is activated to energize the starter/alternator with the power available in the primary and secondary energy storage devices. The starter/alternator is activated as a starter motor until the engine starts or the charge on the secondary energy storage device falls below a mininum charge value.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: July 16, 2002
    Assignee: Ford Global Technologies, Inc.
    Inventors: Allan Roy Gale, Michael W Degner, Michael Alan Tamor
  • Publication number: 20020020381
    Abstract: The invention is directed to a starter system for an internal combustion engine, comprising an electric starter; a starter battery for warming up or starting the combustion engine; a temperature measuring device for measuring the temperature of the starter battery; a power electronics module, which actively varies the magnitude of a discharge current drawn from the starter battery for the purpose of warming up or starting the engine; and a control device, feeding the power electronics module with the value of the discharge current to be varied, where, at low battery temperatures, the maximum discharge current is lower than at high temperatures. The invention is also directed to a method for starting an internal combustion engine.
    Type: Application
    Filed: March 6, 2001
    Publication date: February 21, 2002
    Applicant: Continental ISAD Electronic Systems GmbH & Co. oHG
    Inventor: Thomas Pels
  • Patent number: 6291902
    Abstract: An engine start control apparatus includes a motor/generator and a controller for controlling the motor/generator. The controller starts an engine cranking operation to start the engine by operating the motor/generator in a cranking mode for driving an engine in response to an engine start command signal, monitors an operating condition of the engine cranking operation to produce a mode change signal before an engine speed exceeds a target speed, and switches the motor/generator from the cranking mode to an overshoot control mode to control the power generation of the motor/generator in accordance with a predetermined target parameter such as a target power generation torque and a desired engine speed.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: September 18, 2001
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroaki Ogane, Masaaki Uchida, Yuki Nakajima, Takahiro Yoshino
  • Patent number: 6275759
    Abstract: An automatic engine stop and restart system includes an engine, a starting motor, a transmission, a vehicle operating condition sensor and a controller. The controller monitors the vehicle operating condition to produce an automatic engine restart request signal during an automatic engine stop operation, calculates a target engine speed for the automatic engine restart operation, and drives the motor in accordance with the target speed to perform the automatic engine restart operation in response to the engine restart request signal. During the automatic engine restart operation, the transmission is held in a drive state or in a non-drive state invariably.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: August 14, 2001
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yuki Nakajima, Masaaki Uchida, Hiroaki Ogane, Takahiro Yoshino
  • Patent number: 6153942
    Abstract: A starter cutoff control apparatus and method for a starter/generator used on an engine includes a circuit for detecting starter/generator armature current during an engine start operation, comparing the armature current to an armature current setpoint to produce an error signal; using the error signal to produce a field weakening control signal; and a circuit for producing a starter cutoff signal as a function of the field weakening control signal.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: November 28, 2000
    Assignee: Lucas Aerospace Power Equipment Corp.
    Inventors: Ronald W. Roseman, Kevin E. Rice
  • Patent number: 5982045
    Abstract: A hybrid drive system including an engine and an electric motor at least one of which is operated as drive power source to drive a motor vehicle in a selected one of different operation modes. The system is adapted to prevent concurrent operations to change the operation mode and the speed ratio of a power transmitting device or the ratio of torque distribution to front and rear drive wheels, or concurrent operations to change the operation mode and switch the power transmitting device from a non-drive state to a drive state, for avoiding a shock due to a torque variation which would arise from the concurrent operations. The system is alternatively adapted to cut a power transfer from the drive power source to the power transmitting device, or hold the output of the drive power source substantially constant, when the power transmitting device is switched from the non-drive state to the drive state.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: November 9, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Atsushi Tabata, Yutaka Taga, Ryuji Ibaraki, Hiroshi Hata, Tsuyoshi Mikami
  • Patent number: 5801499
    Abstract: A control system for a vehicular drive unit that includes an engine, a motor-generator connected to the output shaft of the engine and which acts as both a motor and a generator, a battery for storing the energy recovered by the motor-generator as electric power and for feeding electric power to drive the motor-generator, a first clutch for connecting the motor-generator and the wheels, a stop state detector for detecting the stopped state of the vehicle, and a controller for controlling the engine, the motor-generator and the first clutch. When the stopped state is detected by the stop state detector, the controller releases the first clutch, interrupts the feed of fuel to the engine, and feeds electric power to the motor-generator to drive the motor-generator to thereby hold the rotation of the engine substantially at an idling RPM.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: September 1, 1998
    Assignee: Aisin AW Co., Ltd.
    Inventors: Shigeo Tsuzuki, Takeshi Hara, Manabu Watanabe, Kenji Omote, Satoru Tanaka
  • Patent number: 5632238
    Abstract: The present invention as disclosed herein is directed to an engine with associated decompression device which is adapted to drive an onboard generator/electric motor. The present invention comprises an engine speed sensor means for detecting the speed of rotation of the engine, and a fuel injection control means for controlling the injection of a fuel in the engine. The decompression device is, for example, moved from an operative condition to an inoperative condition or vice versa in response to a sensed signal from the engine speed sensor means. The fuel injection control means is operable to initiate or stop the injection of the fuel in response to a sensed signal from the engine speed sensor means. The present invention provides an onboard electrical generating system which better controls vibration and exhaust emissions when the engine, particularly an onboard generator drive engine, is cranked and stopped.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: May 27, 1997
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Akiyoshi Furukawa, Takao Nishida, Atsushi Kamachi, Michio Suzuki, Kazushi Ogiyama, Yoshiharu Hagiwara, Kenji Fukuda
  • Patent number: 4527071
    Abstract: A modular power plant comprises an internal combustion engine coupled to an electrical machine. The electrical machine may be used to start the engine and to generate electrical energy. The power plant is provided with an electronic control and protection system comprising an electronic processing and control unit arranged to operate in a first mode when the power plant is used alone, and in a second mode when the power plant is used together in a coordinated manner in an installation comprising a further n power plants. In this second mode of operation the processing and control unit may act as a master unit for controlling and coordinating the operation of the processing and control units of the other n power plants in a predetermined manner, or as a slave unit controlled by another control and processing unit of one of the other n power plants. Means are provided for assigning the roll of master unit to one of the control and processing units of the n+1 power plants.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: July 2, 1985
    Assignee: Fiat Auto S.p.A.
    Inventor: Francesco P. Ausiello
  • Patent number: 4456830
    Abstract: The invention is an electric starting system for starting aircraft jet engines (32), (34) and (36) using an APU (10) free turbine driven generator (12). The operating power factor of the starter-generator (12) is controlled during start mode operation of the APU (10) by monitoring the line current via a current transformer (58). Contactors (14) and (16) connect the generator (12) into the aircraft's ac power system and ac starting system, respectively. A master start relay (22) is provided, and is closed in the `start` mode such that a power electronics inverter (24) may be powered from external power via contactors (18). The variable-voltage/variable-frequency output of inverter (24) is controlled via a logic controller (26) and can be applied sequentially to the three engine driven generators (32), (34) and (36) via start relays (42), (44) and (46) to start the engines (32), (34) and (36) respectively.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: June 26, 1984
    Assignee: Lockheed Corporation
    Inventor: Michael J. Cronin