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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7246693 | Support housing for torque-transmitting mechanisms in a power transmission A piston support housing for a transmission assembly includes a plurality of axially-extending finger portions engaging a plurality of spline portions formed in a corresponding transmission case, and a plurality of friction plates are assembled adjacent the piston s... | 07/24/2007 |
| 7246673 | Hybrid powertrain with engine valve deactivation A vehicle powertrain includes an engine and an electric motor in parallel hybrid combination. The engine includes a plurality of cylinders and a plurality of selectively deactivatable cylinder intake and exhaust valves so that every cylinder in the engine is charact... | 07/24/2007 |
| 7241242 | Two-mode compound-split hydraulic continuously variable transmission A two-mode compound-split hydro-mechanical powertrain employs a hydro-mechanical continuously variable transmission having two hydraulic units, at least two torque-transmitting mechanisms, and a planetary gear arrangement for combining the output of an engine and th... | 07/10/2007 |
| 7240750 | Method for improving fuel economy in hybrid vehicles The present invention provides a method for improving fuel economy in hybrid vehicles. More precisely, the method of the present invention includes a selectable “learn mode” in which the vehicle can learn a particular driving schedule. After a particular driving... | 07/10/2007 |
| 7238132 | Electrically variable transmission arrangement with transfer gear between motor/generators An electrically variable transmission includes an input member to receive power from an engine about a primary axis; an output member connected to a transfer member for transmitting power to a secondary axis; first and second motor/generators; first and second torqu... | 07/03/2007 |
| 7237662 | Selectable one-way torque transmitter with a friction torque transmitter actuator A selectively operable one-way torque-transmitting mechanism has a friction actuator, which is operable to adjust the position of torque-transmitting members between the inner and outer race of the selectable one-way torque-transmitting mechanism. In an unactuated p... | 07/03/2007 |
| 7236872 | Speed sensor instability detection A speed sensor instability detection and correction system for use with a vehicle includes a speed sensor output variation extractor monitoring and recording change in output of a speed sensor over time. A speed sensor output variation comparison module detects spee... | 06/26/2007 |
| 7236871 | Acceleration limiting for a vehicle A method and apparatus to control acceleration of a vehicle equipped with an electrically variable transmission and including a regenerative braking system, each are operably connected to a vehicle driveline. The method and apparatus include determining which one of... | 06/26/2007 |
| 7235037 | Friction launch control system for a vehicle A launch control system for a vehicle having an engine includes a clutch that selectively enables torque transfer from the engine. A control module determines a launch torque based on a throttle position and an engine speed to achieve a target engine stall speed. Th... | 06/26/2007 |
| 7235029 | Integrated motor clutch for electrically variable transmissions A two-mode, compound-split, electro-mechanical transmission utilizes an input member for receiving power from an engine, and an output member for delivering power from the transmission. First and second motor/generators are operatively connected to an energy storage... | 06/26/2007 |
| 7228783 | Pressure control system for a torque-transmitting mechanism The present invention provides a pressure control system having a control solenoid with plurality of coils disposed therein, and operable to provide a plurality of pressure gain characteristics to a torque-transmitting mechanism. By selectively energizing the indivi... | 06/12/2007 |
| 7226381 | Nine-speed transmissions with four planetary gear sets Nine-speed transmissions are provided that include four planetary gear sets having six torque-transmitting mechanisms and various fixed interconnections to provide nine forward speed ratios and a reverse speed ratio. The powertrain includes an engine and torque conv... | 06/05/2007 |
| 7223205 | Method for controlling engine and/or transmission temperature The method of the present invention is adapted to control transmission oil temperature. According to a preferred embodiment, the engine coolant temperature may be controlled in addition to or regardless of transmission oil temperature. To maintain transmission and/o... | 05/29/2007 |
| 7222013 | Throttle phase out control A vehicular powertrain has output torque established in accordance with various torque contributions in including throttle and brake torques. Throttle torque contribution is reduced proportionally to the amount of brake torque requested. Furthermore, such torque red... | 05/22/2007 |
| 7220206 | Hydrostatically applied clutch system with multiplex master cylinders A power transmission incorporates a plurality of torque-transmitting mechanisms having stationary piston torque-transmitting mechanisms. Each of the torque-transmitting mechanisms is controlled by one or more hydraulic master cylinders, which provide hydrostatic app... | 05/22/2007 |
| 7219000 | Speed control for an electrically variable transmission A multi-mode hybrid transmission has speed control provided via an open loop model derived as a function of preselected transmission accelerations and controlled and uncontrolled transmission torques. Motor torques are selected as the controlled torques and other pr... | 05/15/2007 |
| 7214165 | Method of automatically flushing debris from an electrically-operated hydraulic valve The normal control of an electrically-activated hydraulic valve armature is overridden to automatically and periodically open the armature for flushing out debris that has accumulated between the armature and a seat that the armature is designed to engage. The valve... | 05/08/2007 |
| 7214154 | Electrically variable transmission having six fixed speed ratios A two-mode, compound-split, electro-mechanical transmission utilizes an input member for receiving power from an engine, and an output member for delivering power from the transmission. First and second motor/generators are operatively connected to an energy storage... | 05/08/2007 |
| 7213682 | Hydraulic fluid storage apparatus for a transmission A hydraulic fluid storage apparatus for a transmission has a main sump and a secondary sump. The secondary sump is connected with the main sump through a restricted flow passage. The fluid within the main sump is subjected to centrifugal forces by rotating component... | 05/08/2007 |
| 7213448 | Method for estimating the power capability of the primary power source of a hybrid vehicle The present invention provides a method for estimating the power capability of the primary power source of a hybrid vehicle. The method preferably includes calculating a first indicator based on a broadcast estimate from the primary power source of a hybrid vehicle.... | 05/08/2007 |
| 7210290 | Reduced stall capacity torque converter The apparatus of the present invention provides a torque converter that is looser at stall than it is at 0.8 speed ratio. The torque converter includes a stator having a plurality of stator blades. The stator blades each define a primary leading edge, a trailing edg... | 05/01/2007 |
| 7204780 | Multi speed transmission A transmission is provided having four planetary gearsets, each having respective first, second, and third members, and a plurality of selectively engageable torque transmitting devices configured to selectively interconnect selected members of the four planetary ge... | 04/17/2007 |
| 7178425 | Transmission axle seal cover, lubrication dam and rock guard A cover for an aperture defined by an axle seal on a transmission includes a guard plate and a shield coupled to the axle seal. The shield includes a first portion and a detachable second portion. The shield encloses an aperture in the guard plate when the second po... | 02/20/2007 |
| 7169073 | Powertrain with electrically variable transmission A hybrid powertrain incorporates an engine, two motor/generator units and three planetary gearsets along with three torque-transmitting mechanisms to provide a two-mode compound-split electrically variable transmission. ... | 01/30/2007 |
| 7168541 | Manual planetary transmission with synchronizer clutches and brakes A manual planetary power transmission includes two planetary gearsets and three torque-transmitting synchronizer assemblies. Two of the synchronizer assemblies permit the control of one gear member of the planetary gearsets individually. The third synchronizer permi... | 01/30/2007 |
| 7166050 | Powertrain with an electrically-variable transmission A powertrain incorporates two electrical units, two planetary gearsets in a radially-stacked package to provide a shortened length of the transmission. The output members of the electrical units are interconnected by a gear mechanism, which is drivingly connected wi... | 01/23/2007 |
| 7165567 | Valve apparatus for compensating centrifugal forces A control valve apparatus for a rotating clutch includes a valve having a spool portion and a mass portion. The spool portion provides a control function to distribute pressure from a static source to a chamber of the clutch. The valve also has a mass associated the... | 01/23/2007 |
| 7163487 | Engine retard operation scheduling and management in a hybrid vehicle A hybrid vehicle includes a powertrain having a retarded diesel engine, an electric machine and energy storage system. The engine and motor are operatively coupled through one or more planetary gearsets and selective coupling paths in accordance with application and... | 01/16/2007 |
| 7163482 | Controlled release of perfluoropolyether antifoam additives from compounded rubber Antifoam compositions for functional fluids contain antifoam agents comprising perfluoropolyether compounds (PFPE). An automatic transmission fluid is provided containing the antifoam composition in a lubricating base oil, along with conventional additives such as a... | 01/16/2007 |
| 7163095 | Clutch assembly with vibration damper A clutch assembly includes a hub with a hub friction surface and an inner surface that cooperate to define a cavity. A damper member is situated within the cavity and is in contact with the hub friction surface. The damper member is rotatable with respect to the hub... | 01/16/2007 |
| 7160224 | Single motor recovery for an electrically variable transmission A vehicular powertrain includes operatively coupled engine, electrically variable transmission and driveline. During normal operation when all motors are operating as expected, the engine is operated in a torque control mode in accordance with a torque command provi... | 01/09/2007 |
| 7152724 | Hybrid electro-mechanical transmission park system access cover and method This invention relates to the housing of a hybrid electro-mechanical transmission consisting of park pawl system located in the end cover portion of the transmission housing. The end cover portion is configured to cover the park pawl system and allow access to the c... | 12/26/2006 |
| 7150288 | Control valve apparatus A control for parallel hybrid transmission has a valve mechanism, which is operable to supply fluid pressure to a torque-transmitting mechanism with or without the operation of the vehicle engine. The valve mechanism is responsive to an electrically driven pump to s... | 12/19/2006 |
