Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7531912 | Power supply control system A power supply control system for a vehicle includes a supply line system, a first electric generating means, a second electric generating means, and a control means. The first electric generating means generates electricity through use of a mechanical drive force o... | 05/12/2009 |
| 7042111 | System, method and apparatus for a redundant prime mover system 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 th... | 05/09/2006 |
| 6998727 | Methods of operating a parallel hybrid vehicle having an internal combustion engine and a secondary power source The invention is directed toward methods for operating a parallel 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... | 02/14/2006 |
| 6912451 | Control system for a redundant prime mover system The present invention provides a control system 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 t... | 06/28/2005 |
| 6891280 | Method for operating offshore wind turbine plants based on the frequency of their towers A method for operating a wind power plant which is provided with a device for regulating the speed of a rotor of the wind power plant. The method includes the steps of: determining the critical frequency of the respective turbine and/or turbine components, determini... | 05/10/2005 |
| 6796924 | Engine revolution controlling apparatus An electronic engine-governor control is carried out using no arithmetic tables and thus relieving a load to the CPU. A throttle opening is controlled with a control quantity to suppress a difference between the actual revolutions and the target. Calculator 107 | 09/28/2004 |
| 6791204 | Torque generation for salient-pole synchronous machine for start-up of a prime mover A system and method to provide an improved power electronics starting system (100) in which starting torque is delivered by a salient pole synchronous machine (102), while associated power electronics (110) and (118) utilization is maximi... | 09/14/2004 |
| 6768215 | High rotational speed optimized engine starter having clutch connection to engine In an engine starter of the present invention, a driving shaft to output a rotating force and a crankshaft of an engine are linked continuously. The engine starter comprises a one-way clutch to prevent an overrun of an armature after the engine starts. In the one-wa... | 07/27/2004 |
| 6644247 | Frequency switching systems for portable power modules Frequency switching systems for changing the frequency of electrical power provided by portable power modules trailerable over public roads and capable of providing at least approximately one megawatt of electrical power. In one embodiment, the portable p... | 11/11/2003 |
| 6639371 | Method and system for controlling start of a permanent magnet machine Method and system for controlling a permanent magnet machine are provided. The method provides a sensor assembly for sensing rotor sector position relative to a plurality of angular sectors. The method further provides a sensor for sensing angular increme... | 10/28/2003 |
| 6437535 | Starting system and method for a microturbine power generation unit A power electrical system is disclosed for a microturbine power generator. The invention permits the microturbine to be started using an external DC power source. The DC voltage is converted to a variable DC voltage by means of a bi-directional buck-boost... | 08/20/2002 |
| 6281595 | Microturbine based power generation system and method A power electrical system is disclosed to connect a microturbine and an electrical machine to electrical power sources and a load. The invention permits the microturbine to be started using an external DC power source and/or an external AC power source. D... | 08/28/2001 |
| 6201312 | Drive control system for hybrid vehicles A control system for improving the fuel economy of a hybrid vehicle by evaluating a fuel to be consumed for a charging operation thereby to select a running mode. Specifically, a drive control system for a hybrid vehicle including an internal combustion e... | 03/13/2001 |
| 6133643 | Method for determining governor gains for a fuel control system The present invention is adapted to provide a method for dynamically determining optimal governor dynamics, i.e., gains, for a fuel control system supplying fuel to an engine. The method determines a mode of the engine, then determines the governor gain i... | 10/17/2000 |
| 6118186 | Throttle control for small engines and other applications The throttle of an engine in an engine driven generator system operating under an intermittently heavy load, as in supplying current to a welder, is controlled such that successive control signals sent to a throttle actuator for adjusting the engine throt... | 09/12/2000 |
| 6057605 | Temperature control of exhaust gas catalytic converters in vehicles A vehicle powertrain comprises an internal combustion engine 10 and an electric motor 14 capable of producing driving or braking torque for the vehicle. The exhaust system for the engine 10 includes a catalytic converter 22. A control unit 18 monitors the... | 05/02/2000 |
| 6037672 | Generator having impedance matching prime mover output capability for operation with maximized efficiency In an electrical power generation unit with a prime mover having an output shaft rotating at a speed ω which determines an output power function having at each value of ω an output-power/ω slope Md, and a generator developing electrical powe... | 03/14/2000 |
| 6018200 | Load demand throttle control for portable generator and other applications The throttle of an engine in an engine driven generator system operating subject to a wide and rapidly variable load, as in supplying current to a welder, is operated such that control signals are sent to a throttle actuator for adjusting the engine throt... | 01/25/2000 |
| 6005297 | Power output apparatus and method of controlling the same A power output apparatus 110 includes a planetary gear 120 having a planetary carrier, a sun gear, and a ring gear, an engine 150 having a crankshaft 156 linked with the planetary carrier, a first motor MG1 attached to the sun gear, and a second motor MG2... | 12/21/1999 |
| 5977647 | Automatic pretrip for engine powered generator A method and apparatus for making a pretrip diagnosis and identification of generator set problems which could cause shutdown or undesired operation of the generator set.... | 11/02/1999 |
| 5977645 | Aircraft secondary power system A secondary power system for an aircraft utilizes a variable frequency electrical distribution system that provides power to one or more loads that can tolerate distortion components. In addition, a DC distribution system is coupled to the variable freque... | 11/02/1999 |
| 5907191 | Power output apparatus and method of controlling the same A power output apparatus 110 includes a planetary gear 120 having a planetary carrier, a sun gear, and a ring gear, an engine 150 having a crankshaft 156 linked with the planetary carrier, a first motor MG1 attached to the sun gear, and a second motor MG2... | 05/25/1999 |
| 5789822 | Speed control system for a prime mover An electronic governor (34) to control a main steam valve (22) of a steam turbine (10) for controlling the rotational speed of a main drive shaft (16). The electronic governor (34) has a housing (36) in which an electric generator (104) is mounted to supp... | 08/04/1998 |
| 5394848 | Air-intake control system for internal combustion engine A turbine, which is an essential portion of an air motor, is disposed midway along an air-intake passage communicating to combustion chambers of an engine. A generator is operably connected to an output shaft of the turbine. The generator has a function t... | 03/07/1995 |
| 5336932 | Method for controlling a generator A method for controlling a generator associated with an internal combustion engine of a motor vehicle such that the generator is connected to provide electricity only under specific operating conditions. The method includes the following steps: (1) inputt... | 08/09/1994 |
| 5276353 | Speed stabilization apparatus for two shaft gas turbine A speed stabilization apparatus for use in a two shaft gas turbine is disclosed which includes a speed detector for detecting a rotational speed of a driving shaft of a turbine for driving a generator, a governer for controlling the amount of fuel supplie... | 01/04/1994 |
| 5170065 | Engine speed control apparatus An engine speed control apparatus controls the rotational speed of an engine when the engine is overloaded. The engine speed control apparatus includes a fuel injection rate detecting circuit for detecting the rate at which fuel is injected by a fuel inje... | 12/08/1992 |
| 5095701 | Apparatus for controlling rotational speed of Stirling engine There is disclosed an apparatus for controlling the rotational speed of a Stirling engine in such a way that effective use is made of dump power produced when the speed of the engine is maintained constant. The apparatus comprises a tank in which a workin... | 03/17/1992 |
| 5046924 | Process and circuit arrangement for controlling a consumer driven by an internal combustion engine A method for controlling a consumer driven by an internal combustion engine 1 is suggested, especially a compressor 2 of an air-conditioning system of a motor vehicle, in which before the compressor is put into operation, the power output of the internal ... | 09/10/1991 |
| 4851757 | Method and system for reducing at least one frequency component of a periodic pulsation Pulsations in an electrical parameter on the output of a synchronous generator powered by a Diesel engine at a frequency which differs from that of the synchronous generator's natural frequency are smoothed out, whereby, a controlled variable (X) correspo... | 07/25/1989 |
| 4798082 | Control-display device for an engine-equiped apparatus An engine-equipped apparatus including a control-display device which contains computing circuits into which is fed such data as the AC amperage data from an apparatus having an AC generator, and devices for displaying the data converted by these computin... | 01/17/1989 |
| 4746807 | Automatic control system for controlling the output power of a power plant An automatic control system for a power plant including a torque such as a steam turbine and a generator for converting the generated torque into electrical output. The control system comprises a torque controller such as a steam control valve for adjusti... | 05/24/1988 |
| 4737655 | Prime mover control In a prime mover, an improved control system is provided for accelerating and decelerating the prime mover through periods of critical operation.... | 04/12/1988 |
| 4699097 | Means for suppressing engine output torque fluctuations An engine has an output shaft which is connected with a generator and a motor. A control device is provided to operate the generator in a high output torque period and to operate the motor in a low output torque period in an operating cycle of the engine.... | 10/13/1987 |
| 4625123 | Load sensitive fuel cutoff and method to increase engine stability An assembly for stabilizing engine operation in an engine-generator set includes a fuel supply and fuel lines to first and second banks of engine cylinders. A fuel valve is positioned in the fuel line to the first bank of cylinders and is controlled by a ... | 11/25/1986 |
| 4481425 | Automatic control system for prime movers An automatic control system for such a prime mover as a vehicle engine is adapted to automatically stop the prime mover when such a driven device as a vehicle is arrested, to automatically drive the prime mover in response to operation of a starting mecha... | 11/06/1984 |
| 4463267 | Power supply monitor A power supply monitor is disclosed for monitoring the finely regulated voltage in a two-stage tracking power supply which is driven by a gas turbine engine and which has a coarsely regulated and a finely regulated stage. A reference voltage is generated ... | 07/31/1984 |
| 4461958 | Drive system and method for automotive vehicles, especially floor vehicles such as forklift trucks A drive system for an automotive vehicle, especially an industrial floor vehicle such as a forklift truck, comprises an internal combustion engine, preferably a diesel engine, whose speed-controlling element (e.g. fuel-injection pump) in connected to a sp... | 07/24/1984 |
| 4459490 | Idle control system for generators An internal combustion engine for driving a generator has a governor for maintaining the speed of the engine at a predetermined operating speed. An idle control circuit is provided for overriding the governor during no load conditions. This is accomplishe... | 07/10/1984 |
| 4448021 | Anti-stall control An anti-stall control for use in a system having an engine which drives a pump to supply fluid under pressure to a motor and including means responsive to a control voltage for altering the flow of fluid to the motor. The anti-stall control senses the spe... | 05/15/1984 |
