Patents Examined by Thomas Olszewski
  • Patent number: 9021997
    Abstract: A cam shaft phase setter including a control valve for controlling the feeding and draining of a hydraulic fluid into and out of a pressure chamber which serves to adjust the rotational angular position of a cam shaft relative to a crankshaft of an internal combustion engine. The control valve includes a valve housing with an operating port to the pressure chamber and a reservoir port to a reservoir for the fluid. A valve piston is axially adjustable back and forth in the valve housing between a first position and a second position and includes an axial hollow space, a piston inlet for introducing the fluid into the hollow space, and a piston outlet which leads out of the hollow space and is connected to the operating port in the first position of the valve piston and separated from the operating port in the second position of the valve piston. An actuating unit is coupled to the valve piston for axially adjusting the valve piston.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: May 5, 2015
    Assignee: Schwaebische Huettenwerke Automotive GmbH
    Inventors: Claus Welte, Uwe Meinig, Juergen Bohner
  • Patent number: 9011121
    Abstract: A device that enhances compressor efficiency by reducing pressure losses in a discharge muffler space into which is discharged a refrigerant compressed by a compression unit. A low-stage discharge muffler space is formed in the shape of a ring around a drive shaft. In the low-stage discharge muffler space, a communication port flow guide is provided so as to cover a predetermined area of an opening of a communication port from a side of a flow path in a reverse direction out of two flow paths in different directions around the drive shaft from a discharge port through which is discharged the refrigerant compressed by a low-stage compression unit to the communication port through which the refrigerant flows out. The communication port flow guide transforms a direction of a flow into a direction of a connecting flow path.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: April 21, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuhide Yokoyama, Raito Kawamura, Kei Sasaki, Shin Sekiya, Taro Kato, Masao Tani, Atsuyoshi Fukaya, Takeshi Fushiki
  • Patent number: 8978618
    Abstract: The present invention relates to a heat engine having a housing. A generally triangular shaped rotor can drive an offset crank as it eccentrically rotates within the housing. Two inlets with valves and two exhausts are provided. The volume between each face of the rotor and the housing defines three expansion chambers. Six power cycles are provided (one by each expansion chamber times two inlets) per revolution of the rotor. Each valve controls the length of time that high pressure gas is allowed to enter each expansion chamber. The valves are controlled by a processor and close when enough pressure is supplied so that the pressures inside and outside the expansion chamber are equal when the chamber is fully expanded just prior to exhaust. Gates can provide a mechanical advantage to the rotor by reducing the amount of pressure applied to the back side of the fulcrum.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 17, 2015
    Inventor: Brian Davis
  • Patent number: 8967988
    Abstract: In one aspect, described is a rotor for a rotary internal combustion engine where a first face seal biased axially outwardly away from the first end face has opposed curled ends abutting a first seal element of a respective one of the adjacent apex seal assemblies, and a second face seal biased axially outwardly away from the second end face has opposed curled ends abutting a second seal element of a respective one of the adjacent apex seal assemblies.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: March 3, 2015
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Eugene Gekht, Jean Thomassin, Sebastien Bolduc, David Gagnon-Martin
  • Patent number: 8956132
    Abstract: A compressor includes a main body having in a housing a vane back-pressure space configured to project a vane forming a compression room for compressing gas, and a centrifugal oil separator. A discharge section to which the gas from the oil separator is ejected is formed in the housing, and the oil separator includes a pressure-adjusting valve configured to adjust pressure of the vane back-pressure space according to pressure of the discharge section. The pressure-adjusting valve is arranged in the oil separator without being affected by the gas ejected from the oil separator.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: February 17, 2015
    Assignee: Calsonic Kansei Corporation
    Inventors: Keita Satou, Makoto Kawamura, Hiroshi Iijima, Hiroyuki Sato, Keisuke Nakazawa, Yukihiko Ando, Tohru Kamiyama, Hiroyuki Seimiya, Hiroki Shinkawa, Fumiaki Maruoka, Katsumi Endou, Masanori Ogawa
  • Patent number: 8931455
    Abstract: The present invention relates to an improved rotary engine having one positive motion stroke, the rotary engine comprising at least one of a piston having at least one piston vane. At least one of a unidirectional bearing is operationally coupled to the piston, wherein the piston is configured to allow the piston vane to rotate and the unidirectional bearing prevents the piston vane from rotating during a combustive force or a thrust force injection. A peddle block is positioned in the pathway of the piston vane, wherein as the piston vane approaches the peddle block a secondary exhaust pressure increases against the piston vane surface, the secondary exhaust pressure, in part, causes the piston vane to rotate and self-align for a subsequent cycle. Other exemplary embodiments allow for a secondary exhaust pressure to rotate a piston vane causing the piston vane to self-aligning for the next cycle.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: January 13, 2015
    Inventor: Boots Rolf Hughston
  • Patent number: 8925528
    Abstract: An engine is provided. The engine includes a piston operable to reciprocate in a cylinder, a crankshaft rotatably coupled to the piston, and a supercharger rotatably coupled to the crankshaft. The supercharger has an unequal distribution of mass along a longitudinal plane of the supercharger to provide a rotational counterbalance to reduce engine imbalance.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: January 6, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Ray Alan Kach, Michael Bruno Magnan, Robert Andrew Wade, Vince Paul Solferino, David E. Masser, Jeffrey Eliot Chottiner
  • Patent number: 8925317
    Abstract: An exemplary turbocharger system for an internal combustion engine is provided. The turbocharger system includes a first turbine and a second turbine. The first turbine is in fluid communication with the internal combustion engine. The first turbine receives a first portion exhaust gas discharged from the internal combustion engine and provides a first turbine exhaust gas. The second turbine is in fluid communication with the first turbine via an inter-stage channel. The inter-stage channel transports the first turbine exhaust gas from the first turbine to the second turbine. The inter-stage channel is in thermal connection with an exhaust gas recirculation channel defined between an inlet and an outlet of the internal combustion engine. The first turbine exhaust gas flowing through the inter-stage channel is capable of being heated by a second portion exhaust gas discharged from the internal combustion engine and flowing through the exhaust gas recirculation channel.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: January 6, 2015
    Assignee: General Electric Company
    Inventors: Rodrigo Rodriguez Erdmenger, Cathal Clancy, Daniel Edward Loringer, Jassin Marcel Fritz, Neil Xavier Blythe, Lukas William Johnson, Sebastian Walter Freund, Pierre S├ębastien Huck, Jonathan Edward Nagurney, Yu Du, Matthias Lang, Rudolf Konrad Selmeier, Elisa Jubany Arribas
  • Patent number: 8919322
    Abstract: An engine configuration that places multiple pistons on one or two oscillating discs. The engine can be configured to operate as an internal combustion engine that uses diesel fuel, gasoline, or natural gas, or it can be configured as an expander to convert high pressure high temperature gas to rotary power. For any given set of choices of numbers of pistons and sizes of pistons, disks, and gears, there are disclosed dimensional constraints useful for more efficient functioning of the engine. This engine is especially suited as a driver for electrical power generation as it delivers high torque at low engine speeds, among other uses. Its compact design results in high power to weight ratios.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: December 30, 2014
    Inventors: Stephen Lee Cunningham, Martin A. Stuart
  • Patent number: 8919122
    Abstract: A compressor housing includes a housing body for enclosing an impeller, an inlet portion for introducing air toward the impeller, and a port portion arranged adjacent to the inlet portion. A valve body for opening and closing a bypass passage, which bypasses the impeller, can be rested against the port portion. A connection hole, to which a return passage for returning blow-by gas of an internal combustion engine is connected, is formed in a side wall of the inlet portion. The inlet portion and the port portion have a common wall. A communication hole, which configures a part of the return passage, is formed in the common wall. The communication hole is formed such that the projection plane defined by projecting the communication hole onto a surface of the side wall having the connection hole along the axis of the communication hole is contained in the connection hole.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: December 30, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Norihiko Sumi
  • Patent number: 8915082
    Abstract: An engine is described having an engine control unit and two or more hydraulically operated wheels, wherein a fluid is flowed from an accumulator to the engine via the first wheel to assist in acceleration of the turbocharger in response to an acceleration signal from the engine control system and wherein the fluid is flowed from the engine to the accumulator via the second wheel to decelerate the turbocharger in response to a deceleration signal from the engine control unit. In one particular embodiment, the second wheel absorbs energy from the turbocharger in response to the deceleration signal from the engine control unit to decelerate the turbocharger. In some embodiments, the hydraulically operated wheels may be positioned on the same shaft of, and between, the turbine and compressor of the turbocharger.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: December 23, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Harold Huimin Sun, David R. Hanna, Michael Levin, Eric Warren Curtis, F. Zafar Shaikh
  • Patent number: 8905736
    Abstract: A Wankel engine with a peripheral wall of the stator body including a non-circular opening formed therethrough and defining at least part of a port. The opening has a perimeter defined by a first edge and remaining edges, with the remaining edges being located downstream of the first edge with respect to a direction of rotation of the rotor. The remaining edges extend non parallel to a longitudinal axis of the apex seals.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: December 9, 2014
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Eugene Gekht, Sebastien Bolduc, David Gagnon-Martin, Jean Thomassin
  • Patent number: 8899951
    Abstract: A displacement pump, including a pump chamber and a regulating chamber which are separated from each other by a piston, wherein the pump has a device with which fluid flowing from the pump chamber toward the regulating chamber can be drained.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: December 2, 2014
    Assignee: Schwabische Huttenwerke Automotive GmbH
    Inventor: Kim Boris Friedrich
  • Patent number: 8893684
    Abstract: In one aspect, described is a rotary engine having a purge port located rearwardly of the inlet port and forwardly of the exhaust port along a direction of the revolutions of the rotor, the purge port being in communication with the exhaust port through each of the chambers along a respective portion of each revolution, and the inlet and outlet ports being relatively located such that a volumetric compression ratio of the engine is lower than a volumetric expansion ratio of the engine.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: November 25, 2014
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Mike L. P. Fontaine, Andre Julien, Jean Thomassin
  • Patent number: 8894395
    Abstract: A front housing configuring a scroll compressor is provided in its shaft hole with a first bearing, and the front housing rotatably supports a rotation shaft. The first bearing includes a ball bearing having a plurality of balls. First and second seal rings and are provided between an outer ring fixed to the front housing and an inner ring which abuts against an outer peripheral surface of the rotation shaft. A first seal ring disposed on the side of one side surface of the outer ring is provided such that the first seal ring is in non-contact with the inner ring, and the second seal ring disposed on the side of the other side surface of the outer ring abuts against the inner ring.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: November 25, 2014
    Assignee: Keihin Corporation
    Inventors: Yusuke Nishimura, Kazuaki Higuchi, Satsuki Muraoka, Hiroki Kuwata
  • Patent number: 8876505
    Abstract: Rotor for a screw compressor includes a rotor body (2) and a shaft (6), whereby said shaft extends at least with a part into or through a central or approximately central axial bored hole or passage (5) in the rotor body (2). The shaft (6) has a stretch element (7), whereby the rotor body (2) or at least a part thereof is held on the shaft (6) by means of tension elements (11 and 12) which are locked or can be locked axially with respect to the shaft and which are connected with each other by means of the stretch element (7).
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: November 4, 2014
    Assignee: Atlas Copco Airpower
    Inventors: Johan Nachtergaele, Richard Andre Maria De Bock, Simon Peter G. De Bock
  • Patent number: 8845313
    Abstract: Embodiments of an oil pump for an engine have an increased pump capacity while maintaining or marginally increasing the overall physical size of the pump. In some embodiments, this increased capacity is reflected in a pump length efficiency ratio, which compares an effective gear length (LG) of first and second pump gears used in the oil pump, to an effective housing length (LH). The effective housing length (LH) is a longitudinal distance between surfaces on opposite ends of the oil pump that must be maintained for the oil pump to fit into an available space. Accordingly, the pump length efficiency ratio indicates how much of the effective housing length (LH) can be occupied by the gears. Alternatively, the pump capacity is measured using an output flow efficiency ratio, which compares a theoretical pump flow (FP) at a given gear speed (SG) to the effective housing length (LH) of the pump.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: September 30, 2014
    Assignee: Caterpillar Inc.
    Inventors: Curtis John Graham, Adam William Ostein, Patrick William Savage, Jr., Christopher Lee Bach
  • Patent number: 8833319
    Abstract: A valve train for an internal combustion engine includes a camshaft with a cam unit for actuating a gas exchange valve. The cam unit has at least two cam paths arranged axially one behind the other and is arranged on the camshaft in a rotation-resistant and axially displaceable manner, and has an actuating profile interacting with a displaceable actuating element between a home position and an actuating position radially to the axis of the camshaft for axially displacing the cam unit on the camshaft. The actuating profile is formed by the lateral front face of the cam unit, and the actuating element has at least one displaceable actuating pin that interacts with a lateral front face of the cam unit such that an axial displacement of the cam unit takes place and in each axial position a different cam path is activated to actuate the gas exchange valve.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: September 16, 2014
    Assignee: ThyssenKrupp Presta TecCenter AG
    Inventor: Christian Kraus
  • Patent number: 8833338
    Abstract: The invention comprises a rotary engine method and apparatus configured with a lip seal. A lip seal restricts fuel flow from a fuel compartment to a non-fuel compartment and/or fuel flow between fuel chambers, such as between a reference expansion chamber and any of an engine: rotor, vane, housing, and/or a leading or trailing expansion chamber. In separate states, high pressure and low pressure force sealing movement of the lip seal, respectively. The lip seal is optionally used in combination with a cap seal to form a dynamic seal. The dynamic seals ability to track a noncircular path are particularly beneficial for use in a rotary engine having an offset rotor and with a non-circular inner rotary engine compartment having engine wall cut-outs and/or build-ups. The dynamic sealing forces further provide cap sealing forces over a range of temperatures, pressures, fuel flow rates, varying loads, and operating engine rotation rates.
    Type: Grant
    Filed: April 30, 2011
    Date of Patent: September 16, 2014
    Inventor: Merton W. Pekrul
  • Patent number: 8826661
    Abstract: In order to reduce radiation heat from the turbine housing of a supercharger, the turbine housing is conventionally water-cooled or covered with a heat shielding material, but it is required to control heat loss due to excessive water cooling or high temperature on the outer surface of the heat shielding material. On the contrary, a solution by a cooling structure consisting of an inner thermal insulation portion of an air layer and an outer low temperature portion covering the inner thermal insulation portion has an inevitable problem of increasing number of components and upsizing.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: September 9, 2014
    Assignee: Yanmar Co., Ltd.
    Inventor: Terumitsu Takahata