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| Number | Title | Issue Date |
| 8122986 | Powertrain and method for controlling a powertrain in a vehicle A powertrain for a vehicle having an air intake includes an engine and an electric machine. The engine includes a manifold configured to receive intake air entering through the vehicle air intake, and a throttle disposed between the air intake and the manifold. The ... | 02/28/2012 |
| 7230358 | Electrical resonance circuits for high efficiency direct current motors Practically ideal electrical resonance is employed to soley provide armature power, and stator power if desired, to run DC motors. A practically ideal parallel resonant tank circuit (PIPRC) is used wherein the quotient of the “tank current” divided by the “lin... | 06/12/2007 |
| 7153174 | Outboard motor engine speed control system An outboard motor engine speed control system includes two outboard motors, sensors which detect a travel speed of the boat and the engine speeds of the outboard motors, and a controller which controls the engine speeds of the outboard motors to be synchronized with... | 12/26/2006 |
| 6840045 | Compound engine dynamo-electric machine A first exhaust turbo rotary machine is able to assist turbo supercharging by operating as a motor on power generated in a second rotary machine connected to a power axis of an engine. Also, when exhaust energy is large, the first turbo rotary machine operates as a ... | 01/11/2005 |
| 5890365 | Internal combustion engine constant speed variable volume coupling and operation process A self-contained, hydraulically operated clutch-type coupling, allowing a minimum of two vehicular type internal combustion engines to be mounted in tandem replacing the standard single block, multi cylinder engine. Flexibility is provided to the driver b... | 04/06/1999 |
| 5715162 | Correlative filter for a synchrophaser A synchrophaser for a multi-engine, propeller-driven aircraft including a filter that automatically compensates for misalignment of blade position sensor tabs through derivation and application of a correlation coefficient. The correlation coefficient is ... | 02/03/1998 |
| 5093791 | Variable gain synchrophasing An aircraft engine propeller synchrophasing system (4) has a gain stage (8) which varies the gain of the system (4) according to the magnitude of the difference between the preferred propeller relative phase and the measured propeller relative phase.... | 03/03/1992 |
| 5027277 | Method for synchrophaser measurement and synchrophaser control A method and apparatus for providing improved phase error measurement as shown and described. The measured phase error ($c;E) is used as an input to a SYNCHROPHASER.RTM. control which provides for phase control of a slave propeller with resp... | 06/25/1991 |
| 4964276 | Engine synchronizer A speed synchronizer for master and slave engines is disclosed. The speed controller of the slave engine is adjustable by a manual actuator and also by a servo actuator. The servo actuator is responsive to a circuit which develops a correction signal corr... | 10/23/1990 |
| 4934825 | Propeller phase control apparatus Propeller phase control apparatus for use on multi-engine aircraft having, for each engine, an electronic engine control (EEC) for providing an EEC command speed and phase (S/P) signal to control propeller phase and shaft speed, and a speed and phase cont... | 06/19/1990 |
| 4884205 | Method and apparatus for limiting adverse yaw-induced roll during engine failure in multiengine aircraft An apparatus and method for compensating for asymmetrically produced total engine thrust caused by an engine failure in a multiengine aircraft. The presence of asymmetric total thrust is detected by monitoring aircraft performance parameters, including en... | 11/28/1989 |
| 4741165 | Twin engine Synchronizer Disclosed herein are apparatus for synchronizing the speeds of two or more engines, each having its own throttle lever connected by an associated cable to a respective hand throttle lever. More particularly, the throttle lever of one of the engines is mov... | 05/03/1988 |
| 4586341 | Twin engine synchronizer Disclosed herein are apparatus and methods for synchronizing the speeds of two or more engines, each having its own throttle lever connected by an associated cable to a respective hand throttle lever. More particularly, the throttle lever of one of the en... | 05/06/1986 |
| 4412422 | Apparatus and method for controlling a multi-turbine installation The invention is practiced by providing a plurality of turbine-driven systems each producing an output proportional to a respective control signal, means for generating a respective first output signal for each of the turbine-driven systems proportional t... | 11/01/1983 |
| 4245955 | Phase and speed control system A phase and speed control system for synchronizing the speed and controlling the phase relationship between a pair of aircraft engines, each engine having associated therewith a centrifugal governor, includes a phase comparator circuit which provides a pu... | 01/20/1981 |
| 4173870 | Control system and method Disclosed are apparatus and methods for controlling parameters of fluid-driven systems. A control unit of the invention compares an input control signal to a tachometer signal from a fluid-driven turbine to produce a flow signal for controlling the turbin... | 11/13/1979 |
| 4124980 | Multi-engine control system providing equalized torque for driving a common load An electronic control module comprising an operational amplifier used as a comparator senses the difference between the throttle settings of a master and slave engine as detected by a potentiometer associated with each engine's throttle control apparatus ... | 11/14/1978 |
| 4095425 | Control system for rotary air modulator A control system for providing precise speed control for a rotary air modulator, and particularly for providing synchronized speed control as between two or more rotary air modulators. A common reference frequency is used for controlling rotational speed ... | 06/20/1978 |
| 3986363 | Engine synchronizer An engine synchronizer for synchronizing the speed of a slave engine with the speed of a master engine is disclosed. The disclosed synchronizer includes a comparison and control circuit deriving input signals from the distributors of two engines, e.g., th... | 10/19/1976 |
| 3984986 | Control System for synchronizing engines A control system for insuring synchronized operation of engines, such as those in a propeller driven aircraft, wherein a master engine dictates the speed and phase condition of a slave engine. The system features a timing generator in connection with the ... | 10/12/1976 |
