Having Condition Responsive Or Manually Settable Control Means To Regulate Unit Output Patents (Class 60/347)
  • Patent number: 10359104
    Abstract: A powertrain includes an engine having a crankshaft. The engine is operable to rotate the crankshaft about a central axis. A torque converter includes a housing that is rotatable about the central axis. A selectable one way clutch system interconnects the housing of the torque converter and the crankshaft. The selectable one way clutch system includes a notch plate and a pocket plate. One of the notch plate and the pocket plate is defined by the housing of the torque converter, and the other of the notch plate and the pocket plate is connected to the crankshaft for continuous rotation with the crankshaft.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: July 23, 2019
    Assignee: GM Global Technology Operations LLC.
    Inventors: Farzad Samie, Derek F. Lahr
  • Patent number: 10183567
    Abstract: A vehicle drive device, wherein the fluid coupling accommodating space is formed between the rotating electrical machine accommodating space and the speed change mechanism accommodating space in an axial direction of the speed change mechanism and is configured such that no oil is supplied to a region around the fluid coupling, the discharge oil passage has an introducing opening that opens to the second oil reservoir, and a lowest end of the introducing opening is located below a lowest end of the rotating electrical machine.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: January 22, 2019
    Inventors: Daiki Suyama, Katsuhiko Hattori, Yukihiko Ideshio
  • Publication number: 20140373521
    Abstract: A torque converter for converting torque between an input shaft and an output shaft includes an impeller operably connected to the input shaft and rotatable therewith. The torque converter further includes a turbine operably connected to the output shaft and rotatable therewith. A fluid flow system directs a flow of motive fluid through the impeller and through the turbine to drive rotation of the output shaft relative to the input shaft. A lockup mechanism is engageable to urge rotation of the output shaft at an output shaft rotational speed identical to an input shaft rotational speed. A switching module controls an actuation system to urge engagement of the lockup mechanism.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Inventors: Michael Joseph DeVita, Mark Denton Bystry, JR., Timothy Fred Lauder
  • Publication number: 20130111891
    Abstract: A vehicle drive includes a speed change mechanism connected to a rotary electric machine; an output member connected to the speed change mechanism and wheels; an engagement device changes a state of engagement between an input member connected to an engine and the speed change mechanism; a hydraulic pump driven by the engine or the rotary electric machine; a first pressure control device that controls pressure supplied from the pump and supplies the pressure to the speed change mechanism; a second, separate hydraulic pressure control device that controls the pressure supplied from the pump and supplies the pressure to the engagement device; and a case that houses the rotary electric machine, speed change mechanism, engagement device, and pump. At least the engagement device is housed in a space formed by the case, and the second hydraulic pressure control device is provided at a part of the case forming the space.
    Type: Application
    Filed: October 24, 2012
    Publication date: May 9, 2013
    Inventors: Mikio IWASE, Daiki SUYAMA, Naoya JINNAI, Kensuke WADA, Yuji INOUE, Yukihiko IDESHIO
  • Publication number: 20130061601
    Abstract: A control apparatus for angling guide vanes of a torque converter is provided and includes a modeling unit configured to receive current condition data, to determine a current input power supplied by a starting motor from the current condition data and to output a result of the determination as a control signal and a controller, which is coupled to the modeling unit and thereby receptive of the control signal. The controller is configured to execute a comparison of the current input power with a rating of the starting motor and to angle the guide vanes of the torque converter at an angle in accordance with a result of the comparison.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 14, 2013
    Inventors: Jason Dean Fuller, Justin Aaron Allen, Karl Dean Minto
  • Publication number: 20130047594
    Abstract: A large hydraulic radial piston pump suitable to be driven by the turbine of a wind turbine generator has a circular cover formed from at least three cover segments. Underneath the cover segments a seal in the form of a vulcanised rubber band extends around the entire periphery of the pump. Thus, the cover can be readily removed within the difficult to access location of a wind turbine nacelle, but a reliable seal can still be formed. An air pocket outside the seal, or within the seal, facilitates pulsatile flow into the cylinders of the pump during operation.
    Type: Application
    Filed: August 30, 2011
    Publication date: February 28, 2013
    Inventors: Uwe Stein, Henry Dodson, Alasdair Robertson
  • Patent number: 8265848
    Abstract: A method adaptively learns torque converter (TC) slip in a transmission having a hydrodynamic torque converter assembly by setting a baseline TC slip profile, determining an actual TC slip value at different temperatures, generating an adapted TC slip profile by adapting the baseline TC slip profile in response to the actual TC slip values, and controlling the amount of TC slip during a neutral idle (NI) state of the transmission using the adapted TC slip profile. A vehicle includes a torque converter and a controller. The controller calibrates the TC slip during a first transmission state, and controls the amount of TC slip during a second transmission state. The controller measures actual TC slip data points, and adapts a TC slip profile to more closely approximate a natural slip curve of the vehicle in response to the actual slip TC slip value data points.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: September 11, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Ronald F. Lochocki, Jr., Nicholas C. Jasko
  • Publication number: 20120180466
    Abstract: The invention relates to a switch and control device for setting the power or torque transmission in a hydrodynamic machine, comprising at least one primary wheel and a secondary wheel, which together form a working space that can be filled with a working medium—comprising a housing that is composed of a main body and two shells; at least one electronic component that is at least indirectly used for controlling and/or monitoring the hydrodynamic machine or a predetermined state of said machine; at least one control valve that can be actuated by means of the electronic component in order to control a working medium flow in the hydrodynamic machine or into or out of the hydrodynamic machine.
    Type: Application
    Filed: October 1, 2010
    Publication date: July 19, 2012
    Inventor: Markus Bischoff
  • Patent number: 8204631
    Abstract: Discussed is a method and device for increasing the operational flexibility of a current-generating system with a turboset, comprising a turbine coupled to an electrical generator, a power set point value being predefined, and a future target time at which the turboset is supposed to be at the power set point value, so that a power curve is determined via the power set point value and the target time, the turboset being operated starting from a actual power value at an actual time along the power curve such that the predefined power set point value is reached at the predefined target time. Also discussed is a gas turbine and to a steam turbine in accordance with the above description.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: June 19, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Günther Ebner, Tobias Herzog
  • Publication number: 20110185718
    Abstract: The invention relates to a closure with a thermal safety function for a hydrodynamic or hydraulic machine, in particular a hydrodynamic clutch, designed for use in a housing of the hydrodynamic or hydraulic machine which holds a working medium, wherein the closure has a closure body for screwing or inserting into the housing or mounting on the housing in some other way; the closure body has a passage into which a closure core is introduced, which closure core is connected, by means of a melting element which can be melted on at a predefined temperature, directly to the closure body or to an intermediate element introduced in a seal-forming fashion in the closure body, in such a way that the passage is sealed off so as to prevent the working medium from passing through. The invention is characterized in such a way that the closure core has a blind bore or a blind hole which is open with respect to the working space, with the result that working medium can flow into the closure core.
    Type: Application
    Filed: May 30, 2009
    Publication date: August 4, 2011
    Inventor: Harald Hoffeld
  • Publication number: 20110005216
    Abstract: A variable displacement torque converter having a pump wheel rotatably driven to generate a flow of fluid, a turbine wheel rotated in response to the flow of fluid delivered from the pump wheel, and a stator wheel rotatably disposed in the flow of fluid from the turbine wheel to the pump wheel, the variable displacement torque converter includes an electric motor rotatably driving the stator wheel for adjusting an output torque to be output from the turbine wheel.
    Type: Application
    Filed: March 9, 2009
    Publication date: January 13, 2011
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshiya Yamashita, Atsushi Honda, Hirofumi Ota
  • Publication number: 20100236229
    Abstract: A fluid type power transmission system includes a fluid type power transmission device and a control part. The fluid type power transmission device includes an inlet part and an outlet part for a working fluid. The fluid type power transmission device is configured to transmit power in response to circulation of the working fluid in the interior thereof. The control part is configured to control a pressure of the working fluid in the inlet part by regulating a pressure of the working fluid in the outlet part of the fluid type power transmission device.
    Type: Application
    Filed: October 6, 2008
    Publication date: September 23, 2010
    Applicant: KOMATSU LTD.
    Inventors: Masaaki Kuma, Osamu Kodama
  • Publication number: 20090255252
    Abstract: The invention relates to a hydrodynamic coupling, especially for a turbocompound system, comprising: a pump wheel; a turbine wheel which forms in combination with a pump wheel a working chamber which can be filled with a working medium. The hydrodynamic coupling in accordance with the invention is characterized in that a mechanical locking device is provided for connecting the pump wheel and the turbine wheel in a torsionally rigid manner, which locking device is in connection with a section of the coupling guiding a working medium such that it closes under a predetermined degree of filling of the working chamber.
    Type: Application
    Filed: June 15, 2005
    Publication date: October 15, 2009
    Applicant: VOITH TURBO GMBH & CO. KG
    Inventor: Kurt Adleff
  • Patent number: 7533525
    Abstract: The invention relates to a hydrodynamic torque converter comprising a driving pump wheel, a driven turbine wheel, and a guide wheel, which has guide wheel blades. In order to create a hydrodynamic torque converter, which requires less installation space than conventional torque converters and is producible cost-effectively, the guide wheel blades are attached to the guide wheel such that they can move between a throughflow position and a guide position.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: May 19, 2009
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventor: William Brees
  • Publication number: 20080120973
    Abstract: The invention relates to a starting unit (1, 1.2, 1.3, 1.4, 1.5, 1.6) comprising a starting element in the form of a hydrodynamic component (5, 5.2, 5.3, 5.4, 5.5, 5.6) and a housing (17, 18) that is coupled with the primary impeller (6) in a static or rotationally fixed manner and that encloses at least one impeller (7, 8) in the axial direction, thereby defining at least one working fluid guide channel or compartment (19). The invention is characterized in that the unit is provided with means (2) for influencing the transmission behavior of the hydrodynamic component (5). Said means comprise pressure medium-actuated integrated mechanical components (3) that have an at least indirect effect on the working cycle ensuing in the working compartment (8, 8.2, 8.3, 8.4, 8.5, 8.6).
    Type: Application
    Filed: November 10, 2004
    Publication date: May 29, 2008
    Inventor: Achim Menne
  • Patent number: 7355828
    Abstract: This invention relates to a speed monitor apparatus for monitoring speed and acceleration of rotating turbine equipment (turbomachinery) and for operating an overspeed trip to shut down the equipment in the event that the speed or acceleration exceed predetermined thresholds. The invention provides a speed monitor module having an output switch comprising a plurality of armature clamped relays such that first armatures form a first electrical path only when both first armatures are open or when both first armatures are closed and second armatures provide a second electrical path when either or both second armatures are open or closed such that the second electrical path is discontinuous when either first armature is stuck in an open or closed position causing either second armature to remain floating between an open and closed position.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: April 8, 2008
    Assignee: ICS Triplex Technology Ltd
    Inventor: Ian Jones
  • Patent number: 7254942
    Abstract: A hydrodynamic machine with a turbo coupling comprising primary and secondary wheels together forming a torus shaped workspace, which can be filled with a working medium. A temperature-sensing device installed in a component, which rotates when the machine is operating, and sending a temperature —dependant signal. A stationary monitoring device connected to the temperature sensor in a remote query connection, and having means for creating a temperature measurement correction depending on the heating rate progression of the sensed temperature.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: August 14, 2007
    Assignee: Voith Turbo GmbH & Co. KG
    Inventors: Anton Frank, Kurt Adleff, Harald Hoffeld
  • Patent number: 6928810
    Abstract: A hydrodynamic component (1) comprising: two rotating blade wheels: a primary blade wheel (3) and a secondary blade wheel (4), which together form at least one torus-shaped working chamber (5Z); at least inlet (10) for service fluid leading into the torus-shaped working chamber, the inlet being located in the vicinity of the lowest static pressure; at least one outlet (24) leading out of the torus-shaped working chamber; a working fluid circulation (22) which is set up in the torus-shaped working chamber during operation; a closed circuit (21) allocated to the working chamber and an external section (23) of the closed circuit, said section being located between the outlet and the inlet.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: August 16, 2005
    Assignee: Voith Turbo GmbH & Co. KG
    Inventors: Klaus Vogelsang, Reinhard Kernchen, Werner Klement
  • Publication number: 20040011032
    Abstract: The invention relates to a hydrodynamic coupling (1), comprising two blade wheels—a pump wheel (2) and a turbine wheel (3)—which together form a toroidal working chamber (4); a pump wheel shell (6) which is rotationally fixed to the pump wheel (2) and which surrounds the turbine wheel (3) in an axial direction, hereby forming a first guiding channel or chamber (9) for the operating means; and a second guiding channel or chamber (12) for the operating means which opens out in the area of the inner diameter of the toroidal working chamber (6) or below the same. The first and second guiding channels or chambers (12) for the operating means may be used as a supply or discharge channel or chamber to or from the toroidal working chamber (4), respectively.
    Type: Application
    Filed: May 28, 2003
    Publication date: January 22, 2004
    Inventors: Heinz Holler, Reinhard Kernchen, Achim Menne, Werner Klement
  • Patent number: 5713201
    Abstract: The present invention includes a centrifugal pump powered by an engine. A hose is connected to the centrifugal pump at a pump outlet. An injection nozzle is connected at the other end of the hose. A controller is operable to move the nozzle. A turbine is directly connected to an output shaft. Power oil is provided by the pump, through the hose, to the injection nozzle. The turbine receives the injected power oil from the nozzle and transmits power to the output shaft.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: February 3, 1998
    Inventor: Hiroyuki Sakemi
  • Patent number: 5319949
    Abstract: A regulator valve assembly adapted to be used in conjunction with a torque converter in a vehicular transmission having a pressurized hydraulic distribution system, a cooling system and a torque converter. The regulator valve assembly has a stepped valve chamber to receive a spool valve member for axial translation. The spool valve member defines first, second, third and fourth subchambers within the stepped valve chamber. Axial translation of the valve member effects selective communication between the subchambers. A first land on the spool valve member is interposed between the first and second subchambers. A second land is interposed between the second and third subchambers. A third land is interposed between the third and fourth subchambers, and a fourth land is exposed to the fourth subchamber. A first outlet communicates with the first subchamber. A first inlet and a second outlet communicate with the second subchamber. A second inlet and third outlet communicate with the third subchamber.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: June 14, 1994
    Assignee: General Motors Corporation
    Inventors: Charles F. Long, Dennis M. Cooke, Phillip F. McCauley
  • Patent number: 5263320
    Abstract: An axially oriented annular piston is provided in the torque converter. It encircles the converter pump. The piston has an open and a closed position. In the open position, a portion of the fluid exiting the converter pump bypasses the turbine, passing through an axial gap between the pump and the turbine. Having some of the fluid bypass the turbine reduces the amount of fluid impinging on the turbine, thereby reducing the torque induced in the turbine by the fluid. When the piston is in the closed position, all of the fluid is directed toward the turbine, maximizing the torque developed. Springs keep the piston in the open position at rotative speeds at or below an engine idle speed. As the rotative speed of the pump is increased beyond engine idle, a centrifugal chamber opposed to the springs fills with fluid and forces the piston to the closed position.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: November 23, 1993
    Assignee: General Motors Corporation
    Inventor: Arthur Hall, III
  • Patent number: 4671061
    Abstract: A scoop controlled fluid coupling has a toroidal working circuit W defined by vaned impeller and runner elements 11,12. Working liquid is supplied to the working circuit W from a rotating reservoir 9 by an adjustable scoop tube 15 having a scooping orifice 16, the radial position of which is to determine the degree of filling of the circuit W. To counteract unintentional changes in the filling due to thermal expansion of the liquid, the runner diameter is about 10% smaller than that of the impeller, and the runner has two sets of holes 54,55 which permit liquid to escape from the circuit.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: June 9, 1987
    Assignee: Fluidrive Engineering Company Limited
    Inventor: John Elderton
  • Patent number: 4669262
    Abstract: The hydrodynamic control coupling has primary and secondary vane wheels (2,4 respectively) inclined to the coupling axis (20) and a working space (5) which is provided with an inlet (6) and an outlet (7) for the working medium, the working medium capable of being diverted from the working space into a receiving chamber (10) via tangential bores (7) running in the direction of the flow, a valve (8) being provided which determines the rate at which the working space fills. In accordance with the invention, the receiving chamber for the working medium is located radially inwardly of the working space and is defined by walls of the primary and secondary vane wheels. Such an arrangement of the coupling enables it to be constructed with smaller dimensions and to be simply controlled.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: June 2, 1987
    Assignee: J.M. Voith GmbH
    Inventor: Helmut Muller
  • Patent number: 4597481
    Abstract: The disclosure concerns a hydrodynamic control coupling with a primary drive vane wheel and a secondary driven vane wheel which together define a toroidal working chamber. Each vane wheel carries an array of vanes on its interior which extend toward the vanes of the other vane wheel. The vanes of the vane wheels are inclinded with respect to the axis of the coupling, yet each is oriented parallel to a respective radius of the coupling. Furthermore, the vanes on each of the vane wheels are inclined to extend toward the vanes on the other wheel. There is a working fluid inlet to the working chamber. A working fluid outlet from the working chamber is through the secondary, driven vane wheel and is via a plurality of bores extending tangentially toward the axis of the coupling. An overflow valve communicates with the outlet from the working chamber. Upon the rotary speed of the primary vane wheel increasing rapidly, the overflow valve reacts by opening more widely, reducing the filling level in the coupling.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: July 1, 1986
    Assignee: J. M. Voith GmbH
    Inventors: Helmut Muller, Klaus Brosius
  • Patent number: 4581892
    Abstract: A fluid coupling interposed between an induction motor and a load has an impeller and a turbine together defining a working chamber connected via radially inward and radially outward passages with a delay chamber on the impeller side of a corotating housing. The two sets of passages are selectively blockable by shutters that are controlled by an evaluator, inserted in a space between the motor and load shafts, which also accommodates a power supply consisting of one or more batteries. The evaluator responds to several sensors, measuring such parameters as motor torque, load speed and acceleration, to drain or refill the working chamber.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: April 15, 1986
    Assignee: Bergwerksverband GmbH
    Inventors: Klaus Ahrens, Peter Brychta
  • Patent number: 4426845
    Abstract: Disclosed is a method and apparatus for reducing the level of noise emitted by air turbine machinery, particularly a pneumatically driven hydraulic pump for an airplane, wherein a modulating valve meters the flow of air from a source of pressurized air through a conduit to an air turbine to control the speed of the turbine. A pressure regulating valve is located in the air conduit upstream of the modulating valve to regulate and maintain the upstream pressure on the modulating valve at substantially the minimum pressure required in order to permit operation of the air turbine over its full range of speed as the amount of airflow is varied with the modulating valve. Reducing the pressure across the modulating valve in this manner minimizes the production of supersonic airflow and attendant noise by the modulating valve, which noise is otherwise propagated to the atmosphere through the turbine exhaust stream and is additionally radiated by the turbine casing.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: January 24, 1984
    Assignee: The Boeing Company
    Inventors: George W. Brooks, John W. Hart, Egil R. Pettersen
  • Patent number: 4223871
    Abstract: A winch mechanism of the surface compensating type for lifting objects from the surface of the sea comprises two or more variable pressure constant displacement hydraulic pump/motors coupled to drive a rope haulage mechanism; a pump connected for pumping operating fluid to the hydraulic pump/motors; a fluid accumulator branched from the high pressure fluid supply line from the pump to the pump/motors; and first and second non-return valves. The first non-return valve is in the high pressure fluid supply line between the fluid accumulator and the pump/motors to limit the flow of fluid from the accumulator to one only of the pump/motors, and the second non-return valve is between the high pressure fluid line and a low pressure fluid return line to permit the other pump/motor(s) to act as a pump.
    Type: Grant
    Filed: April 3, 1979
    Date of Patent: September 23, 1980
    Assignee: Vickers Shipbuilding Group Limited
    Inventor: John C. Braithwaite
  • Patent number: 4203288
    Abstract: A hydrokinetic torque converter transmission for multiplying torque delivered from a driving member to a driven member comprising a bladed impeller connected to the driving member, a bladed turbine connected to the driven member and a stator located between the flow exit section of the turbine and the flow entrance section of the impeller, said impeller comprising a main impeller blade section and an auxiliary impeller blade section, the latter being located radially outward with respect to the former, and a centrifugally operated clutch structure for connecting together for rotation in unison the auxiliary impeller blade section and the main impeller blade section at high impeller speeds and for disengaging them when the impeller speed is less than a predetermined value.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: May 20, 1980
    Assignee: Ford Motor Company
    Inventor: Robert W. Nichols
  • Patent number: 4152894
    Abstract: A control system of the hydraulic torque converter of a transport vehicle wherein the space formed by the converter wheels and the space of the coupling which locks said wheels are in communication, through a changeover valve actuated by a signal of the RPM transmitter of the engine shaft of the transport vehicle, with the discharge line of the pump, said line communicating with the source of fluid via a reducing valve. The system incorporates an auxiliary pump whose discharge line communicates with the discharge line of said pump through a check valve and, through a valve actuated by the pressure of fluid contained in the space of the locking coupling, with the source of fluid.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: May 8, 1979
    Assignees: Tsentralny Nauchno-Issledova-Telsky Avtomobilny i. Avtomotorny Institut "Nami", Proizvodstvennoe Ubiedinenie "Baz"
    Inventors: Leonid A. Rumyantsev, Vasily T. Avershin, Vladimir Y. Ilnitsky, Ivan L. Jurin
  • Patent number: 4128999
    Abstract: In a torque converter equipped with a fluid operated lock-up clutch to provide either a fluid or a rigid mechanical connection between an input and an output shaft, the reactor member is arranged for movement along the converter axis between a working and a retracted position by a fluid operated actuating piston. Upon engagement of the lock-up clutch, the reactor member simultaneously travels from the working to the retracted position, in which latter position the reactor member closes the flow path in the impeller member, in order to minimize power loss incurred by the hydraulic fluid.
    Type: Grant
    Filed: November 23, 1977
    Date of Patent: December 12, 1978
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Akinori Yokoyama, Iwao Morinaka
  • Patent number: 4086766
    Abstract: A fluid coupling comprising a first member secured on a first shaft, a second member secured on a second shaft in axial alignment with said first shaft, and an annular fluid race chamber, one of said members having a vaned annulus within said fluid race chamber and the other said member presenting at least one gate into the fluid race chamber, said gate, or each gate, being arranged to allow the vaned annulus of the vaned member to pass relative thereto while obstructing the circumferential flow of fluid along the race chamber and whereby, when the race chamber is charged with fluid and the assembly is rotated, the fluid flows in the race chamber generate to a pressure gradiant acting circumferentially of the axis of rotation to create a pressure difference across the, or each, gate to impart rotation to the gated member.
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: May 2, 1978
    Inventor: Helmut John Stieger
  • Patent number: 4056019
    Abstract: For a torque converter transmission, a valve arranged to control the flow of fluid therein. Flow between five axially spaced apart ports, and in particular from a central port to a pair of adjacent control ports and from the control ports to respective adjacent vent ports is controlled by axially spaced apart disc valve elements operatively associated with one or more axially movable elongated members, each disc element being axially movable against a mating valve seat. The valve may control flow to the working chamber of the torque converter or serve other functions such as controlling the mode of operation of the torque converter.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: November 1, 1977
    Assignee: S.R.M. Hydromekanik Aktiebolag
    Inventor: Karl Gustav Ahlen
  • Patent number: 4049093
    Abstract: A torque converter and lock-up clutch wherein the fluid flow to and from the torque converter is directed into the converter, at an inner location, between the stator and turbine and to the disengagement of the clutch, when the clutch is disengaged. A control valve disposed in the turbine shaft divides the inlet flow. The fluid is exhausted from the converter between the stator and impeller. When the clutch is engaged, fluid flow is directed to the converter between the stator and impeller and the disengagement chamber of the clutch is exhausted. The control valve, during this phase, prevents fluid from exhausting between the stator and turbine.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: September 20, 1977
    Assignee: General Motors Corporation
    Inventors: William J. Vukovich, Paul D. Stevenson
  • Patent number: 4041701
    Abstract: A hydraulically actuated lockup clutch is arranged between the cores of the pump and turbine elements of a torque converter for directly coupling them together for operation above the clutch point. For engagement and disengagement of the lockup clutch, which can be of the multiplate type, the turbine element is moved toward and away from the pump element under the control of a control valve which selectively communicates a clutch actuating chamber within the converter with an external pump assembly and with a fluid drain. Alternatively, a clutch actuating chamber can be formed between the core of the pump or turbine element and a movable pressure plate, so that the latter may travel toward and away from the former for engagement and disengagement of the clutch.
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: August 16, 1977
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Isamu Goto, Sadanori Nishimura, Eiichiro Kawahara
  • Patent number: 4023362
    Abstract: A scoop-trimmed fluid coupling wherein the transmitted torque decreases continuously with increasing ratio of runner speed to impeller speed at each degree of filling of the working circuit with liquid. During acceleration of the runner, the scoop tube is moved by its actuator from a "circuit empty" to a "circuit full" position in several stages and at different speeds so that the torque which is transmitted by the coupling during acceleration of the runner remains substantially constant. If the load upon the runner varies from acceleration to acceleration of the runner, the operation of the actuator during acceleration of the runner is modified by a controller system which monitors the energy requirements of the prime mover for the impeller or the acceleration of the runner.
    Type: Grant
    Filed: June 22, 1976
    Date of Patent: May 17, 1977
    Assignee: Voith Turbo KG
    Inventors: Thomas Rogner, Klaus Sauka
  • Patent number: 3999385
    Abstract: A hydrodynamic coupling for driving pumps, fans, and the like at variable shaft speeds includes coaxial primary and secondary impellers. The space defined within these impellers contains variable quantities of working fluid for transmitting the shaft torque from one impeller to the other. One of the impellers is equipped with a co-rotating casing, which encloses the other impeller and may serve to force working fluid into the working chamber. The fluid exits from the working chamber through an aperture in the higher-lying impeller and returns to a storage chamber from which a conduit transports it to the casing. A control valve in the conduit permits external flow control.
    Type: Grant
    Filed: January 5, 1976
    Date of Patent: December 28, 1976
    Assignee: Voith Turbo KG
    Inventors: Heinz Hoeller, Klaus Nolz, Thomas Roegner
  • Patent number: 3992880
    Abstract: A fixed geometry torque converter having variable power absorption capacity by provision of a secondary fluid flow path which introduces fluid at the trailing edge region of the stator vane adjacent the impeller and at a direction normal to the primary flow of fluid from the turbine passing across the stator to return to the impeller. The rate of this secondary fluid flow is selectively varied to alter the direction of the primary flow of fluid and thereby selectively vary the power absorption capacity of the torque converter. In combination with a fluid turbomachine as utilized in aircraft systems, the variable capacity torque converter is arranged in the power drive train so as to load the turbomachine. By selectively varying the power absorption capacity of the torque converter in relation to prevailing ambient conditions, a greater amount of the power output capacity of the turbine machine may be utilized at various ambient conditions without causing stalling of the turbine machine.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: November 23, 1976
    Assignee: The Garrett Corporation
    Inventor: Andrew R. S. McCutcheon
  • Patent number: 3989127
    Abstract: A hydrodynamic brake system wherein the extent to which the working chamber between the rotor and stator is filled with braking liquid is regulated by a valve which is adjustable by a measuring device having an overflow line communicating with two spaced-apart portions of the working chamber and containing two flow restrictors. The end portions of the overflow line are positioned in such a way that a continuous stream of liquid flows through the overflow line when the rotor is driven. At least one of the flow restrictors is adjustable so as to insure that the pressure of liquid in the overflow line between the flow restrictors is indicative of the real braking action of the system. Such pressure is used for adjustment of the valve to thus insure that the extent to which the working chamber is filled varies in response to changes in rotational speed of the rotor so as to guarantee a reproducible progress of the braking action.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: November 2, 1976
    Assignee: J. M. Voith GmbH
    Inventors: Gerhard Staudenmaier, Berthold Herrmann, Hein Hellwig
  • Patent number: 3975906
    Abstract: A twin-flow modulating torque converter having a torus which is defined by walls and rings of the pump, turbine and reactor members, and formed with a fluid bypass in the rings for developing an alternate flow circuit which bypasses the blades of one or more members of the fluid circuit; the fluid bypass being normally closed by the reactor member which is adapted for linear movement to open the fluid bypass for accomplishing varying degrees of modulation. The pump and turbine members are adapted to move relative to each other during operation for varying the cross-sectional area of the fluid bypass.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: August 24, 1976
    Assignee: Westinghouse Air Brake Company
    Inventors: Lyle E. Eaton, John H. Hyler
  • Patent number: 3958671
    Abstract: A hydrodynamic brake system for the wheel of a vehicle, particularly for the non-driven wheel of a trailer, forms an integral unit which is installed within the confines of the wheel rim at one side of the hub. The stator of the brake system is mounted on the non-rotating axle for the wheel, and the rotor of the brake system is connected with a reservoir for a supply of hydraulic brake fluid and is rotated by the hub and/or rim. The reservoir is connected by discrete feeding and evacuating conduits with a toroidal working chamber which is defined by the stator and rotor, and a portion of the reservoir is exposed to the surrounding atmosphere so as to promote the cooling of brake fluid therein.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: May 25, 1976
    Assignee: Voith Getriebe KG
    Inventor: Helmut Muller
  • Patent number: 3955366
    Abstract: A hydrodynamic torque converter is provided with means for varying the torque capacity of the torque converter, including means for varying the capacity of the impeller. The capacity of the impeller is varied by means of movable impeller blades which are movable radially outward to vary the radius of the respective blades.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: May 11, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Robert C. Hansen, Lowell E. Johnson
  • Patent number: 3955367
    Abstract: In a fluid clutch of the type comprising cooperating pump and turbine elements between which toroidal power-transmitting liquid vortices can be established, control of the clutch by an operator is effected by moving a baffle within the working chamber between a clutched position in which the vortices can be established and maintained, and a declutched position in which it is interposed in the path taken by such vortices and prevents their establishment and maintainence. The baffle is operative to produce the required de-clutching and clutching action by changing the operative volume of the clutch element in which it is mounted. In a preferred structure a radially-slotted annular baffle is mounted on a cylindrical sleeve slidable on the output shaft and moves within the turbine chamber toward and away from the pump element, the turbine vanes entering the slots in the baffle; a spring urges the sleeve and the baffle toward the clutch engaged position further from the pump element.
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: May 11, 1976
    Assignee: Cluaran Associates Ltd.
    Inventor: John Edward Becker
  • Patent number: 3952508
    Abstract: A temperature and speed responsive control for a fluid coupling adapted to drive a cooling fan for an internal combustion engine. The coupling is of the hydrokinetic type and includes an input or drive member adapted to be driven by the engine, an output or driven member defining a housing adapted to carry the fan, a fluid working chamber defined by the drive and driven member, a cylindrical sleeve controlled by a fluid pressure and operative to vary the output speed by controlling fluid circulation in the working chamber, means in the working chamber for producing the fluid pressure, and temperature and speed responsive means for controlling the fluid pressure to the sleeve in response to temperature and speed changes.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: April 27, 1976
    Assignee: Eaton Corporation
    Inventor: Warren G. Bopp
  • Patent number: 3939933
    Abstract: Control system for a variable performance torque converter on a vehicle which has a number of auxiliary services such as brakes or cylinders served by a power source driven by the vehicle engine includes an actuator operating a control element on the torque converter in response to signalling means connected to the auxiliary services to proportion power from the engine between the torque converter and the power source for the auxiliaries.
    Type: Grant
    Filed: March 22, 1973
    Date of Patent: February 24, 1976
    Assignee: Massey-Ferguson-Perkins Limited
    Inventor: Anthony Clubley Armstrong
  • Patent number: RE29928
    Abstract: A temperature and speed responsive control for a fluid coupling adapted to drive a cooling fan for an internal combustion engine. The coupling is of the hydrokinetic type and includes an input or drive member adapted to be driven by the engine, an output or driven member defining a housing adapted to carry the fan, a fluid working chamber defined by the drive and driven member, a cylindrical sleeve controlled by a fluid pressure and operative to vary the output speed by controlling fluid circulation in the working chamber, means in the working chamber for producing the fluid pressure, and temperature and speed responsive means for controlling the fluid pressure to the sleeve in response to temperature and speed changes.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: March 13, 1979
    Assignee: Eaton Corporation
    Inventor: Warren G. Bopp