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| Number | Title | Issue Date |
| 7878169 | Cam roller pin with transverse grooves A roller pin for carrying a cam roller in a tappet assembly is provided. The roller pin providing reduced run in time and reduced peak and localized contact pressure between the cam roller and roller pin. The roller pin comprises a substantially cylindrical shaft ha... | 02/01/2011 |
| 7856959 | Method and apparatus for controlling exhaust gas recirculation and start of combustion in reciprocating compression ignition engines with an ignition system with ionization measurement An apparatus and method to detect combustion conditions using ion signals for use in a feedback control of a reciprocation engine is presented. The ion signals are used as a feedback signal to control EGR and diesel injection timing. The apparatus is an ignition sys... | 12/28/2010 |
| 7832377 | Thermal protection for fuel injectors A fuel injector is provided. The fuel injector includes an injector support and a heat shield coupled to the injector support. The heat shield only interacts with the injector support by way of contacts such as point contacts, line contacts or surface contacts. Furt... | 11/16/2010 |
| 7827795 | Active thermal protection for fuel injectors A fuel injector and turbine engine incorporating the fuel injector are provided. The fuel injector includes an active cooling system that insulates fuel flowing through the fuel injector from heat energy within the turbine engine. The cooling system includes a cooli... | 11/09/2010 |
| 7823562 | Engine fuel control system A fuel control system is provided. The fuel control system includes an electronic control system coupled to a pair of control valves for blending pipeline fuel with waste fuel at a blend ratio for controlling fuel flow to an internal combustion engine. The fuel cont... | 11/02/2010 |
| 7812467 | Smart alternator load control A smart alternator control circuit and method is provided limiting alternator load on an internal combustion engine. ... | 10/12/2010 |
| 7798125 | Method and system for closed loop combustion control of a lean-burn reciprocating engine using ionization detection A system and method for controlling knock in a lean burn internal combustion (IC) engine includes a spark plug having an electrode, and an electrical circuit configured to provide a first voltage to the electrode and detect an ion current during a thermal-ionization... | 09/21/2010 |
| 7798124 | Method and system for closed loop combustion control of a lean-burn reciprocating engine using ionization detection A system and method for controlling knock in a lean burn internal combustion (IC) engine includes a spark plug having an electrode, an electrical circuit, and a controller. The electrical circuit is configured to provide a first voltage to the electrode and detect a... | 09/21/2010 |
| 7707992 | Method and apparatus for controlling exhaust gas recirculation and start of combustion in reciprocating compression ignition engines with an ignition system with ionization measurement An apparatus and method to detect combustion conditions using ion signals for use in a feedback control of a reciprocation engine is presented. The ion signals are used as a feedback signal to control EGR and diesel injection timing. The apparatus is an ignition sys... | 05/04/2010 |
| 7665714 | Fail safe mechanism for valve using a cock and lock return spring A fail safe mechanism having a return member, valve stem extension, energy storage member, and locking assembly. The valve stem extension is driven by an electrical actuator and configured to drive the return member in a first direction and to be driven by the retur... | 02/23/2010 |
| 7659655 | Pre-chamber spark plug A method and apparatus to maximize spark plug life in pre-chamber spark plugs operating with ultra-lean mixtures and/or elevated engine BMEP is presented. Electrode erosion is reduced by spreading discharge energy over a wider surface area, maintaining fuel concentr... | 02/09/2010 |
| 7637246 | Compensating for varying fuel and air properties in an ion signal Presented is a device that provides a correction factor to compensate for varying fuel and air properties in an ion signal sensed in combustion chamber of reciprocating and continuous combustion engines, on a predetermined basis during the combustion of conventional... | 12/29/2009 |
| 7607421 | Pulsation-dampening fuel trim strategy for air/fuel ratio control of propane-fueled, spark-ignited engines A trim system for controlling an equivalence ratio in a fuel system is provided. The fuel system includes an air duct, a mixer disposed in the air duct, and a converter. The mixer has a reference pressure port and an air valve vacuum port. The converter has an outle... | 10/27/2009 |
| 7527481 | Ejector pump for a fuel system for a gas turbine engine A system for automatically transferring the fuel from one or more engine fuel manifolds directly to the engine fuel tank(s) during engine shutdown using an ejector pump has been presented. A checkvalve, which may be integrated with the ejector pump, is also used. A ... | 05/05/2009 |
| 7506858 | Tube-end butterfly metering and shutoff valve A butterfly valve comprising a valve body having a passage, a valve shaft assembly, a plate, and a tube is provided. The valve shaft assembly comprises first and second shaft portions in opposing spaced relation, an intermediate portion therebetween, and a support p... | 03/24/2009 |
| 7490594 | Super-turbocharger The invention combines the features of a supercharger, a turbocharger and turbo-compounding into one system, utilizing a hydraulic or mechanical continuously variable transmission to drive the turbocharger up to a specific speed or intake manifold pressure and then ... | 02/17/2009 |
| 7477524 | Retainer and method for holding a circuit card against a clamping surface of a chassis or heatsink An improved retainer, apparatus and method for retaining a circuit card are provided, through the use of a circuit card retainer comprising a length of spring wire defining a longitudinal axis of the retainer, lying in a plane of the retainer, and formed to define a... | 01/13/2009 |
| 7464532 | Apparatus for elimination of transient pressure spikes on stiff fluid systems An apparatus for reducing pressure spikes in a fuel line having a shut-off valve is provided. The apparatus comprises a body housing a biasing member and a moveable separation member. The body has first, second, and third chambers. The first and second chambers are ... | 12/16/2008 |
| 7426936 | Fully independent, redundant fluid energized sealing solution with secondary containment A redundant sealing system with secondary containment for preventing leakage of fluid along a valve shaft is provided. The system comprises a first set of dynamic seals, a second set of dynamic seals, an auxiliary barrier fluid chamber, and a barrier fluid indicator... | 09/23/2008 |
| 7355300 | Solid state turbine engine ignition exciter having elevated temperature operational capability A turbine engine ignition exciter circuit applies energy stored in the exciter tank capacitor to the load (igniter plug) through a thyristor type semiconductor switching device that minimizes leakage current at elevated operating temperatures. The semiconductor swit... | 04/08/2008 |
| 7204133 | Method and apparatus for detecting combustion instability in continuous combustion systems An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. The electrode may be integrated with an igniter. A cont... | 04/17/2007 |
| 7144792 | Method and apparatus for fabricating and connecting a semiconductor power switching device Fabrication processes for manufacturing and connecting a semiconductor switching device are disclosed, including an embodiment for dicing a wafer into individual circuit die by sawing the interface between adjacent die with a saw blade that has an angled configurati... | 12/05/2006 |
| 7118114 | Dynamic sealing arrangement for movable shaft A dynamic sealing arrangement for preventing leakage of a fluid along a shaft includes multiple seals and pressurized barrier sealant. According to one aspect, at least three seals are arranged along the shaft with pressurized barrier sealant between the first and s... | 10/10/2006 |
| 7096722 | Method and apparatus for detecting combustion instability in continuous combustion systems An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. A control module applies a voltage potential to the ele... | 08/29/2006 |
| 7059418 | Pressurized seal arrangement A pressurized sealing arrangement suited for providing a seal between a valve stem and a valve body is provided. The sealing arrangement includes a piston that is restrained in and statically sealed to the valve body and which surrounds the valve stem. Contained wit... | 06/13/2006 |
| 7051746 | Valve having pressure balancing piston and method involving same A valve assembly is disclosed that provides for complete or partial fluid pressure balancing across the valve, and can be used for reducing valve actuation forces in order to employ electric actuation. The valve assembly includes a valve housing having a valve chamb... | 05/30/2006 |
| 7044434 | High recovery sonic gas valve A high recovery sonic gas valve design with the inlet flow entering transverse and orthogonal to the outlet flow is presented. The configuration cancels the effects of the inlet flow entering orthogonal to the axis of the nozzle and diffuser. The inlet passage is cu... | 05/16/2006 |
| 7027961 | Inertia identification for electric actuators with observer based controls A method to automatically identify the inertia of an actuator (and the like) and load for tuning an observer-based controller is presented. The tuning is a one-time process that is initiated by a user when the actuator is installed. The control includes a model of t... | 04/11/2006 |
| 7027310 | Electronic monitor mounting configuration An apparatus for permitting both base and flush mounting a device to a surface is disclosed. The apparatus comprises a case housing a device and a frame. The frame is configured to attach to the case in both a base mounting and flush mounting configuration. ... | 04/11/2006 |
| 7017884 | Fluid metering valve A fluid metering valve includes a gear rack which is slidable on a valve stem in which a spring counteracts the force of an actuator to maintain a constant load on the gear mechanism to prevent backlash. Corresponding stop mechanisms between the gear and the shaft o... | 03/28/2006 |
| 7007661 | Method and apparatus for controlling micro pilot fuel injection to minimize NOand UHC emissions The present invention provides a system that controls the amount and timing of pilot fuel injection to obtain minimum NOx and UHC emissions. The system senses if combustion occurs, when combustion occurs, and/or the quality of combustion in the combustion... | 03/07/2006 |
| 7000895 | Valve having pressure balancing piston and method involving same A valve assembly is disclosed that provides for complete or partial fluid pressure balancing across the valve, and can be used for reducing valve actuation forces in order to employ electric actuation. The valve assembly includes a valve housing having a valve chamb... | 02/21/2006 |
| 6994073 | Method and apparatus for detecting ionization signal in diesel and dual mode engines with plasma discharge system An apparatus and method to detect combustion conditions using ion signals for use in a feedback control of a diesel engine is presented. The apparatus is a spark plug type of sensor or a sensor integrated with a fuel injector. The spark plug type of sensor is used t... | 02/07/2006 |
| 6993960 | Method and apparatus for detecting combustion instability in continuous combustion systems An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. The electrode may be integrated with an igniter. A cont... | 02/07/2006 |
| 6981359 | Centrifugal pump fuel system and method for gas turbine engine A fuel system for a gas turbine engine that utilizes a centrifugal pump. The system includes a fuel metering valve that is adapted to set a metered flow of fuel, and a throttle valve that is adapted to accurately control pressure drop across the fuel metering valve.... | 01/03/2006 |
| 6953084 | Actuator for well-head valve or other similar applications and system incorporating same An electrical actuator is particularly suited for driving a wellhead valve for regulating the flow of natural gas from a production well. The electrical actuator can be driven using the existing local power supply in wellhead valve systems, typically a solar panel a... | 10/11/2005 |
| 6935310 | Method and apparatus for detecting abnormal combustion conditions in reciprocating engines having high exhaust gas recirculation An apparatus and method to detect abnormal combustion conditions for use as a feedback control of an EGR (Exhaust Gas Recirculation) controlled reciprocating engine using ionization signals is presented. The system receives a succession of ionization signals for suc... | 08/30/2005 |
| 6932052 | Air/fuel ratio control system for gaseous fueled engines The invention provides a system that controls the air intake pressure of a venturi mixer in an air/fuel ratio control system for gaseous fueled engines to match the fuel vaporizer/regulator output pressure (negative pressure) or to a desired set point of a fuel vapo... | 08/23/2005 |
| 6889121 | Method to adaptively control and derive the control voltage of solenoid operated valves based on the valve closure point The invention provides a computer implemented method to automate the calibration of the drive voltage waveform of a solenoid operated valve. An initial estimate of valve electromagnetic parameters and valve closure point is derived and the drive voltage waveform is ... | 05/03/2005 |
| 6810863 | Gaseous fuel and air mixer assembly for internal combustion engine A gas/air mixer assembly provides a Venturi metering system that may draw fuel from a zero governor, mix it with air to form a homogenous gas/air mixture for delivery to an internal combustion engine. The gas/air mixer assembly may also accept fuel under pressure fr... | 11/02/2004 |
