Patents Examined by Grant Moubry
  • Patent number: 11148189
    Abstract: An improved piston forging for use in an internal combustion engine is disclosed. The piston forging comprises a crown, a pair of pin towers extending generally axially away from the crown, and a skirt extending generally axially away from the crown. The improved piston forging further comprises a plurality of grains flowing across the piston forging. The plurality of grains are reoriented during the forging operation into a configuration that follows the surfaces and features of the piston forging. More specifically, the plurality of grains are reoriented in a manner that is most beneficial to resist combustion and inertial forces that are enacted upon a machined piston during operation.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: October 19, 2021
    Inventors: Steven Edward Legat, Cody Lyle Mayer, Brian Todd Reese
  • Patent number: 11143327
    Abstract: A cooling apparatus includes a circulation circuit, a pump, a flow rate adjustment valve, and a controller. The flow rate adjustment valve includes a valve member that rotates to change an open degree of the flow rate adjustment valve and a stopper that moves between a restriction position and a retraction position. The controller is configured to execute, when maintaining the open degree of the flow rate adjustment, a preparatory process of moving the stopper to the restriction position after arranging the stopper at the retraction position and arranging the valve member further in the valve-closing direction than the stopper through control of the pump discharge amount.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: October 12, 2021
    Inventors: Noboru Takagi, Hirokazu Kato, Rihito Kaneko, Naoto Hisaminato, Hirokazu Ando, Masaaki Yamaguchi, Hirotaka Watanabe, Takahiko Aoyagi, Masahiro Yoshida, Koji Nunami, Naoto Yumisashi, Masafumi Yoshida
  • Patent number: 11131254
    Abstract: Provided is a marine engine, including: a piston; and a compression ratio controller configured to execute lowering processing of moving a top dead center position of the piston toward a bottom dead center side when an engine rotation speed falls within a resonance occurrence range set in advance. A geometrical compression ratio is reduced, and a resonance stress caused by a torsional vibration in a rotary system can thus be suppressed while suppressing a decrease in thermal efficiency compared with a case in which retarding control is applied to a fuel injection timing or a closing timing of an exhaust valve.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: September 28, 2021
    Inventors: Yutaka Masuda, Yoshiyuki Umemoto, Toshihiko Shimizu, Takahiro Takimoto
  • Patent number: 11125144
    Abstract: An internal combustion engine is equipped with a water injector for cooling the internal combustion engine by a spray of atomized water into the intake track or combustion chamber prior to ignition. The atomized water spray may be in the intake manifold or directly in the cylinder. The water is injected at a volume of between a ratio of about 95% fuel to about 5% water and about 50% fuel and about 50% water. The temperature of the internal combustion engine is maintained at between about 95° C. and about 200° C. during operation.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: September 21, 2021
    Assignee: Nostrum Energy PTE. LTD
    Inventor: Nirmal Mulye
  • Patent number: 11125170
    Abstract: An engine/reformer system accepts a first fuel and reforms it into syngas for use as a fuel in an accompanying internal combustion engine. Prior to reforming, the first fuel is pressurized and/or heated to at or near supercritical fluid conditions, such that the resulting syngas leaves the reformer in a supercritical fluid state. Injection of the supercritical syngas into an engine cylinder avoids the autoignition problems that occur when gaseous syngas is used. The first fuel is a fully self-reforming fuel (one that needs no separate water supply for complete conversion to syngas), and can beneficially be a “wet” fuel, such as ethanol containing water, allowing the system to use intermediate products of an ethanol production process (such as hydrous ethanol and stillage wastewater) as fuel, and reducing the overall cost of fuel production and engine operation.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: September 21, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Sage L. Kokjohn, David D. Wickman
  • Patent number: 11125146
    Abstract: Systems and methods are disclosed for determining a temperature of a coolant in a cooling system for an engine and diagnosing a thermostat in the engine responsive to the determined temperature. A system includes a liquid cooling system including a thermostat, the liquid cooling system structured to circulate a coolant, and a controller coupled to the liquid cooling system and the EGR system. The controller is structured to: receive engine heat data indicative of a first amount of heat introduced into an engine; receive heat loss data indicative of an amount of heat loss experienced by the coolant; determine a temperature of the coolant based on the first amount of heat and the amount of heat loss; compare the determined temperature of the coolant to a sensed temperature of the coolant; and determine a status of the thermostat responsive to the comparison.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: September 21, 2021
    Assignee: Cummins, Inc.
    Inventors: Emrah Arslanturk, Jeremy Nethercutt
  • Patent number: 11118533
    Abstract: A piston for an internal combustion engine includes a piston having a bowl surface forming a combustion bowl, a rim surface forming an annular rim, and a gallery surface exposed to a backside cooling gallery of the piston. The bowl surface forms a bowl profile varied circumferentially around a piston center axis, and the gallery surface forms a gallery profile that is varied circumferentially around the piston center axis and is congruous with the bowl profile. The gallery surface is concave to the combustion bowl, convex to the backside cooling gallery, and forms no edges exposed within the backside cooling gallery. A wall formed between the combustion bowl and the backside cooling gallery has a heat-dissipation wall thickness defined by the varied bowl profile and the varied gallery profile.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: September 14, 2021
    Assignee: Caterpillar Inc.
    Inventors: Jonathan William Anders, Naga Krishna Chaitanya Kavuri, Bobby John, Hyderuddin Mohammad
  • Patent number: 11111876
    Abstract: A cylinder head includes an exhaust port through which exhaust gas discharged out of a combustion chamber of an internal combustion engine passes. The cylinder head includes a first fin and a second fin projecting from an inner wall of the exhaust port and extending in a flow direction of the exhaust gas. The cylinder head includes a first projection projecting from the inner wall of the exhaust port and extending in a direction intersecting the first fin. The cylinder head also includes a second projection projecting from the inner wall of the exhaust port and extending in a direction intersecting the second fin.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: September 7, 2021
    Inventors: Masahiko Asano, Noboru Takagi, Naoto Hisaminato, Minoru Okimura, Shinya Wakabayashi
  • Patent number: 11098620
    Abstract: Provided is a compression ratio varying mechanism, including a communication hole including: a first opening opened in an outer peripheral side surface of a piston rod; and a second opening, which is prevented from being opposed to the first opening in a radial direction of a piston rod, and is connected to an oil passage at a position apart from the first opening in a stroke direction.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: August 24, 2021
    Inventors: Yutaka Masuda, Jun Teramoto, Ryo Ohara
  • Patent number: 11092090
    Abstract: Presented are variable compression ratio and independent compression and expansion engines, methods for making/operating such engines, and vehicles equipped with such engines. An engine assembly includes an engine block with a cylinder bore defining a combustion chamber, and a piston movable within the cylinder bore. A valve assembly, which is fluidly coupled to the combustion chamber, selectively introduces/evacuates fluid from the combustion chamber. A crankshaft is supported by the engine block and rotatable on a first axis. A multipoint linkage, which drivingly engages the piston to the crankshaft, rotates on a second axis offset from the first axis. A control shaft is supported by the engine block and rotates on a third axis offset from the first and second axes. The control shaft operable to selectively rotate the multipoint linkage on the second axis, and is operable to selectively unseat the valve assembly.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: August 17, 2021
    Assignee: GM Global Technology Operations LLC
    Inventor: Andrew G. Balding
  • Patent number: 11078815
    Abstract: A delivery device for delivering oil from an oil sump in a motor vehicle has an oil pump with two pressure stages. The pressure stages deliver oil from a common suction connection to different outlet connections. The oil is delivered by the pressure stages at different delivery pressures and in different delivery volumes. The delivery device furthermore has a direct drive, which is coupled to an internal combustion engine, and an activatable electric drive.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: August 3, 2021
    Assignee: Vitesco Technologies GmbH
    Inventor: Christian Boehm
  • Patent number: 11073078
    Abstract: An engine includes a crankshaft and a timing gear to be attached to the crankshaft so as to rotate integrally with the crankshaft. A fitting projection is provided on either one of the crankshaft and the timing gear, and a fitting recess to be fitted with the fitting projection, and erroneous-assembling prevention ribs to sandwich the fitting recess in a circumferential direction are provided on the other one of the crankshaft and the timing gear.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: July 27, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Tetsuya Kobayashi
  • Patent number: 11067032
    Abstract: A piston includes: a piston head; and a piston skirt connected to the piston head, wherein the piston skirt includes wall portions protruding outward from a surface of the piston skirt, the wall portions adjacent to each other in a circumferential direction of the piston skirt are inclined in directions opposite to each other with respect to a direction of movement of the piston in a bore for the piston, and define a tapered portion, and the tapered portions are spaced away from each other in the circumferential direction of the piston skirt.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: July 20, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takuzo Hirano, Ichiro Yamaguchi, Nobuhiko Soda, Hironori Aoyama, Kazuya Mikashima, Hiroyuki Ito
  • Patent number: 11067039
    Abstract: A method and system for condensing water for injection into an internal combustion engine to increase the engine's fuel economy and performance while reducing emissions. A volume of ambient air is drawn through an intake valve into a sealable chamber. The intake valve is closed and the ambient air compressed within the sealed sealable chamber and thereafter vented through an exit valve to be contained in a cooling section. The cooling section comprises a port and a cooling device. The cooling device, which in one embodiment comprises a refrigeration unit, cools the ambient air contained within the cooling channel to condense water vapor present in the ambient air into liquid water. The liquid water is drained from the cooling channel through the port and collected in a reservoir. Liquid water from the reservoir is then injected into at least one combustion chamber of the internal combustion engine.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: July 20, 2021
    Assignee: Saudi Arabian Oil Company
    Inventor: Vincent Stanley Costanzo
  • Patent number: 11058055
    Abstract: A harvesting combine has a forward power processing unit (PPU) powered by an internal combustion engine, a rear grain cart for storage of harvested grain, a forward operator cab, a cleaning fan assembly located about the forward bottom of the PPU, and rotor and concaves assembly for threshing grain. The harvesting combine is improved by locating a charge fan assembly behind the forward operator cab and drawing air from about the top of the PPU and directing a portion of an air flow from the charge fan assembly downwardly into the cleaning fan assembly.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: July 13, 2021
    Assignee: Tribine Industries, LLC
    Inventors: Darren J. Nelson, Robert A. Matousek, Bryan S. Claerhout
  • Patent number: 11053884
    Abstract: An internal combustion engine includes a hollow cylinder, a piston within the hollow cylinder, and a cylinder head. A base valve assembly at a base of the hollow cylinder permits or restricts fluid flow from an intake manifold into a sub-chamber below the piston. The piston includes at least one intake port connecting a combustion chamber above the piston with the sub-chamber, and a transfer valve that opens and closes the at least one intake port. When the transfer valve opens the at least one intake port, fluid is permitted to flow from the sub-chamber to the combustion chamber. The internal combustion engine operates according to a four-stroke piston cycle, wherein multiple intake stages are provided.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: July 6, 2021
    Assignee: Coutts Industries Inc.
    Inventor: Clyde Coutts
  • Patent number: 11047341
    Abstract: A system and method for combustion in an engine includes a combustion chamber, a prechamber, and a fluid injector. The prechamber extends from a first end to a second is fluidly connected to the combustion chamber through at least one port positioned at the first end of the prechamber. The fluid injector is configured to introduce a fluid into the prechamber following combustion of an air-fuel mixture within the prechamber and positioned to introduce the fluid into the prechamber at the second end of the prechamber.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: June 29, 2021
    Assignee: Caterpillar Inc.
    Inventor: Andrew J. Loetz
  • Patent number: 11047329
    Abstract: Various embodiments include a method for diagnosing a crankcase ventilation line of a crankcase ventilation device for an internal combustion engine having a crankcase, an intake tract, and a compressor arranged in the intake tract for compressing the intake air comprising: diverting fresh air from the intake tract via a fresh air supply line; either enabling or inhibiting a flow of fresh air into a free volume of the crankcase depending on a switch position of a shut-off valve in the fresh air supply line; detecting a nitrogen oxide concentration in the crankcase during the process of crankcase ventilation, close to the point of introduction into the intake tract upstream of the compressor using a nitrogen oxide sensor; and evaluating the tightness of the crankcase ventilation line based at least in part on the detected nitrogen oxide concentration.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: June 29, 2021
    Inventor: Hong Zhang
  • Patent number: 11041432
    Abstract: A cylinder structure of an internal combustion engine contains: a body, two lids, and multiple positioning elements. The body has a combustion chamber, an air inlet, an air outlet, and two scavenging units. A respective scavenging unit has a first scavenging orifice, a second scavenging orifice, a first fringe, a second fringe, a first engagement portion, and a first fixing orifice. The two lids are configured to close the first scavenging orifice and the second scavenging orifice, an air conduit is defined between a respective lid and an external fence of the body, and the respective lid has multiple second fixing orifices. A respective positioning element has a stem and at least one hook, the stem extends into the first engagement portion, and the stem is rotated so that the at least one hook contacts with the respective lid, and the respective lid is connected with the body.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: June 22, 2021
    Inventor: Chun-Li Chen
  • Patent number: 11034427
    Abstract: A heat exchange system for use on an engine-powered watercraft includes a liquid cooling system for cooling the engine using a first heat exchanger and a water heating system using a second heat exchanger for heating water. Raw water from an external water source is passed through each heat exchanger. Water used to cool the engine coolant inside the first heat exchanger exits the watercraft. Water heated by the second heat exchanger is passed to either an intake conduit or at least one onboard accessory system for flushing thereof to kill aquatic invasive species. A valve inside the second heat exchanger opens to release heated water when the heated water reaches a temperature of at least 140° F. Heated coolant from the first heat exchanger passes through the second heat exchanger to transfer heat to the water inside the second heat exchanger.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: June 15, 2021
    Assignee: Indmar Products Company Inc.
    Inventors: Jason C. Stimmel, Rachel M. Mashburn, Jason W. Vetzel