Crankcase Vapor Used With Combustible Mixture Patents (Class 123/572)
  • Patent number: 11401845
    Abstract: An engine includes: an exhaust manifold 7 close to one of left and right side surfaces of an engine; a turbocharger 60 having an exhaust-side inlet connected to the exhaust manifold 7; and a rocker-arm-chamber-integrated intake manifold 8 being disposed on an upper surface of a cylinder head 5 and integrally including a rocker arm chamber 90 and an intake manifold 6. The intake manifold 8 has a wall 101 dividing the rocker arm chamber 90 close to the one of the left and right side surfaces of the engine 1 and the intake manifold 6 close to the other of the left and right side surfaces to isolate the rocker arm chamber 90 and the intake manifold 6 from each other. The rocker arm chamber 90 has, in its upper portion, a positive crankcase ventilation device 69 protruding therefrom and being configured to return blowby gas to an intake system.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: August 2, 2022
    Assignee: Yanmar Power Technology Co., Ltd.
    Inventors: Tomoyuki Kimura, Hisato Inokuchi
  • Patent number: 11371476
    Abstract: A positive crankcase ventilation (PCV) outlet anti-freezing device of an intake manifold of a vehicle engine includes a first guide and a second guide formed adjacent to a PCV outlet within an inlet tube of the intake manifold to block direct contact between fresh air and a PCV gas, thereby preventing condensation and freezing of the PCV gas. The first guide and the second guide also can improve flow distribution of the intake manifold by improving fluidity of the fresh air.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: June 28, 2022
    Assignee: Hyundai Kefico Corporation
    Inventors: Min Ki Kim, Hyung Wook Kim, Chan Karam Na
  • Patent number: 11371399
    Abstract: This oil return structure is provided with a flow passage body configured to return oil into an engine body which communicates with an oil storage section of the engine, the oil having been separated from a blow-by gas by an oil separation means. The upstream end of the flow passage body is connected to the oil separation means, at least a portion of the downstream side of the flow passage body protrudes into the engine body from the inner wall thereof, and an oil discharge opening at tire downstream end of the flow passage body is disposed at a position not immersed in oil within the oil storage section.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: June 28, 2022
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Hideki Osada, Hitoshi Nishitani
  • Patent number: 11359526
    Abstract: This blowby gas discharging device is provided with a heating chamber 24 which is interposed midway along a blowby gas pipeline, is formed in a flywheel housing 10 of an internal combustion engine, and heats blowby gas. The internal combustion engine is provided with a power transmission mechanism 13 for transmitting power from a crankshaft 6 to a camshaft 7, and a mechanism chamber 14 accommodating the power transmission mechanism. The heating chamber is adjacent to the mechanism chamber across a separating wall 41, and a retaining portion 60 for causing oil inside the mechanism chamber to be retained is provided in the separating wall.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: June 14, 2022
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Osamu Igarashi
  • Patent number: 11346310
    Abstract: An apparatus and a method are provided for an aircharger air intake system for filtering and conducting an airstream to an air intake of an engine. The aircharger air intake system includes an air filter comprising a filter medium configured to entrap particulates flowing within the airstream. An air box comprising one or more sidewalls and a mount wall is configured to support the air filter within an engine bay. The air box is configured to be mounted, or fastened, onto the engine. An intake tube is coupled with the air filter and configured to conduct the airstream to the air intake of the engine. The intake tube is configured to be coupled with an air temperature sensor or a mass air sensor of the engine. An adapter is configured to couple the intake tube with the air intake.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 31, 2022
    Assignee: K&N Engineering, Inc.
    Inventor: Steve Williams
  • Patent number: 11286841
    Abstract: A prime mover includes an engine, a fan to generate a cooling airflow around the engine, an air-intake tube to supply outside air to the engine, a connection tube to supply, to the air-intake tube, a blow-by gas generated in the engine, and a wind shielding member to shield the connection tube from the cooling airflow, the wind shielding member being arranged around the connection tube.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: March 29, 2022
    Assignee: KUBOTA CORPORATION
    Inventors: Yuki Takano, Makoto Noguchi, Tetsuji Matsushita
  • Patent number: 11261833
    Abstract: A breather device for an outboard motor engine, the outboard motor engine including a breather chamber formed in an engine main body, and an intake passage guiding air into the engine main body, in which an intake port of the intake passage is open inside an engine cover that covers the engine main body, the breather device includes a resonator chamber communicating with an upstream side of the intake passage, and a breather passage extending from the breather chamber and communicating with the resonator chamber.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: March 1, 2022
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Morio Kishimoto, Yuna Ishida
  • Patent number: 11230998
    Abstract: A ventilation apparatus of an internal combustion engine of the invention ventilates a chain chamber by recirculating blow-by gas to an intake passage through a blow-by gas recirculation pipe and introducing air into the chain chamber through an air introduction pipe. The air introduction pipe is secured to a head cover wall portion which corresponds to a portion of a head cover wall which defines the chain chamber.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: January 25, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masayuki Chiba, Katsuichi Miyasaka, Satoko Tofukuji, Kenji Ikeda
  • Patent number: 11230967
    Abstract: An internal combustion engine includes a crankcase and a cylinder head. The cylinder head and the crankcase delimit at least one cylinder in which a translationally moving piston is arranged. A water injection device injects water into the at least one cylinder. A crankcase ventilation device is fluidically connected to the crankcase. A blow-by mixture containing injection water can flow through the crankcase ventilation device. The crankcase ventilation device has an activated charcoal filter. The blow-by mixture containing the injection water can flow through the activated charcoal filter.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: January 25, 2022
    Inventor: Henrik Faber
  • Patent number: 11204091
    Abstract: A vehicle axle housing having a lower bowl portion with a bottom portion connected to a bottom portion of an axle half shaft housing at a first connection portion. A second connection portion connects a first wall of the lower bowl to a first wall of the axle half shaft housing and a third connection portion connects a second wall of the lower bowl to a second wall of the axle half shaft housing. Disposed in the second and third connection portions is one or more first and second attachment holes. A lubrication fluid baffle including a first end portion having a first bent portion, a middle portion having a second bent portion and a second end portion having a third bent portion. Extending from each side of the second bent portion is a first tab and a second tab that are disposed within the first and second attachment holes.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: December 21, 2021
    Assignee: Dana Automoción SA
    Inventors: Alberto Goni, Juan Jose Sagastibelza
  • Patent number: 11203957
    Abstract: The head cover for an engine includes a gas passage in the head cover, a gas outlet formed on a head cover wall at a terminal end portion of the gas passage in the head cover, a gas intermediate outlet portion formed in the head cover wall so as to face space inside the head cover except the gas passage in the head cover, and a gas intermediate inlet portion formed in the head cover wall so as to face the gas passage in the head cover, in which an opening specification in which through holes penetrating the head cover wall are formed and a closing specification in which the through holes are not formed can be selected for the gas intermediate outlet portion and the gas intermediate inlet portion.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: December 21, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Satoshi Sugimoto, Takayuki Ichikawa, Shota Hatada
  • Patent number: 11174766
    Abstract: The combination of a gas-pressure-driven pump jet nozzle or alternatively Coanda effect nozzle with an impactor nozzle(s) in an air-oil separator for separating oil from blow-by gasses from a crankcase of an internal combustion engine, or for separating liquid aerosol from gas, in general. Such combination enhances impaction efficiency and enables operation at higher pressure differentials (or pressure drop) (“dP”) without causing excessive backpressure in the air-oil separator.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: November 16, 2021
    Assignee: CUMMINS FILTRATION IP, INC.
    Inventors: Peter K. Herman, Christopher E. Holm, Arun Janakiraman
  • Patent number: 11162400
    Abstract: A separator system comprises a main separator, and an additional separator including one of a pre-separator, post separator, or line-of-sight baffle. The additional separator separates liquid particles from an air/liquid mixture and comprises an inlet, an air outlet, a liquid outlet, and a plurality of posts disposed between the inlet and the air outlet. The posts are arranged in a staggered array and comprise a convex end portion having an impaction surface, a portion of liquid particles from the air/liquid mixture adhering as a liquid film to the impaction surface, and a hook end portion positioned downstream the convex end portion and including hooks having an end and a collection pocket disposed between the impaction surface and the end. The collection pocket collects the portion of liquid particles adhered as the liquid film to the impaction surface.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: November 2, 2021
    Assignee: Cummins Filtration IP, Inc.
    Inventors: Navin Surana, Vijay Kolhe, Shantanu Sanjay Ghatnekar
  • Patent number: 11149601
    Abstract: An oil separator for separating oil droplets and/or oil mist from gases, in particular from blow-by gases of an internal combustion engine is described.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: October 19, 2021
    Assignee: 3NINE AB
    Inventors: Sebastian Brinker, Christoph Erdmann, Francesco Zitarosa
  • Patent number: 11125126
    Abstract: A lubricant supply apparatus for an internal combustion engine includes a lubricant shower and a baffle plate. The lubricant shower is disposed between a camshaft and a cylinder head cover attached to a cylinder head. The lubricant shower includes a supply port from which a lubricant is supplied to the camshaft. The baffle plate is disposed between the camshaft and the lubricant shower such that a clearance is provided between the baffle plate and the lubricant shower. The baffle plate includes a hole provided at a position at which the hole of the baffle plate overlaps with the supply port of the lubricant shower. The camshaft is provided with a cam. The supply port of the lubricant shower and the hole of the baffle plate are located above the cam.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: September 21, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koichiro Kimura, Masami Ishikawa
  • Patent number: 11125127
    Abstract: An internal combustion engine having a crankcase with a base and an oil tank, wherein a first connection between the crankcase and the oil tank is formed with a first valve, which is open in the direction from the crankcase to the oil tank and closed in the opposite direction, and a second connection between the crankcase and the oil tank is formed with a second valve, which is open in the direction from the oil tank to the crankcase and is closed in the opposite direction. The first valve is arranged on the base of the crankcase and the second valve is arranged above the first valve.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: September 21, 2021
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Peter Grois, Eberhard Hilper, Marc Mueller
  • Patent number: 11111831
    Abstract: The invention relates to a cylinder head oil separator arranged in a cylinder head of an internal combustion engine. In order to reduce maintenance and simplify the oil separator, the cylinder head oil separator includes a flow channel which is constructed as a Tesla valve and which is designed such that the air-oil aerosol flows through a longer flow path in a first flow direction from the aerosol inlet at a first opening to the air outlet (separation direction) at a second opening. The air-oil aerosol flows through a shorter flow path in a ventilation direction opposite the separation direction from the inlet at the second opening to the outlet of a fluid at the first opening.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: September 7, 2021
    Assignee: MONTAPLAST GMBH
    Inventors: Michael Heinz, René Pouillon
  • Patent number: 11111830
    Abstract: The invention describes an internal combustion engine having at least one crankcase, at least one cylinder head, at least one cylinder head cover, at least one oil separator and at least one oil pan for collecting returning oil as well as having at least one oil return channel that connects the oil separator and the oil pan.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: September 7, 2021
    Assignee: Deutz Aktiengesellschaft
    Inventor: Matthias Kringels
  • Patent number: 11058979
    Abstract: An air-oil separator assembly can include an air-oil mixture inlet, an air outlet, and an oil outlet, a housing defining a cylindrical separating cavity, and an outlet conduit disposed within the separating cavity, wherein, outlet conduit is adapted to receive oil removed by the air-oil separator assembly from a flow containing an air-oil mixture fluid received by the air-oil mixture inlet.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: July 13, 2021
    Assignee: GE Aviation Systems LLC
    Inventors: Lanchao Lin, Richard Louis Heil, Jan Zywot
  • Patent number: 11028777
    Abstract: This invention relates to a cooling system for an internal combustion engine, and is particularly suitable for cooling emission gases from electronically controlled, Tier 3 fuel injection engines [12] used in trackless mining machinery, wherein the fuel injection engine [12] includes an exhaust manifold [14], a turbocharger [16], and a catalytic converter [18] through which the emission gasses sequentially pass before they are released to atmosphere. The cooling system [10] comprises an exhaust manifold housing [20] for at least partially encasing the exhaust manifold [14], a turbocharger housing [34] for at least partially encasing the turbocharger [16], and a catalytic converter housing [92] for at least partially encasing the catalytic converter [18]. The cooling system [10] also comprises an exhaust cooler [118] adapted for rapidly cooling emission gasses exiting the catalytic converter [18] before they are released to atmosphere.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: June 8, 2021
    Assignee: AIM IP (PTY) LIMITED
    Inventor: Paulus Johannes Aucamp
  • Patent number: 11015676
    Abstract: To provide a vehicle that includes a balancer mechanism for reducing vibration of the engine and can leave a space margin for increasing the fuel tank in size and/or arranging equipment or components at the rear of the cylinder and above the crankcase. A vehicle includes: an engine mounted on a body frame. The engine comprises a crankcase with a ceiling wall, a crankshaft provided in the crankcase, and a balancer mechanism for reducing vibration of the engine by power transmitted from the crankshaft. The balancer mechanism comprises an idler gear disposed behind the crankshaft and rotated by power transmitted from the crankshaft, and a first balancer disposed behind the idler gear and rotated by power transmitted from the idler gear. The idler gear and the first balancer are disposed along the ceiling wall.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: May 25, 2021
    Inventor: Masaki Mori
  • Patent number: 10982576
    Abstract: In an engine that includes a blow-by-gas returning system configured to direct blow-by gas within a crankcase to an intake system through an inside of a head cover, the intake system includes a cover intake-passage disposed at a blow-by-gas outlet of the head cover, and the cover intake-passage communicates with a blow-by-gas passage of the blow-by-gas outlet.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: April 20, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Hiroki Oso, Akira Tanaka, Hideyuki Koyama, Rina Kaneko, Nobuyoshi Okada
  • Patent number: 10975810
    Abstract: A positive crankcase ventilation (PCV) system includes: an oil separator separating oil from blow-by gases; a PCV valve allowing the blow-by gases from which the oil has been separated by the oil separator to flow into intake ports of a cylinder head; a PCV passage vertically extending from the PCV valve; a PCV chamber connected to the PCV passage; and a plurality of bypass passages branching off from the PCV chamber to the intake ports, respectively.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: April 13, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Jeong Kyu Lim
  • Patent number: 10975742
    Abstract: A blow-by gas return device includes: a gas path which is configured to introduce a blow-by gas generated in a crankcase into an intake system through an inside of a head cover, a pressure control valve and a blow-by pipe; and an orifice provided to the gas path, the orifice mounted on a wall portion of an intake manifold on a cylinder head side. A passage for a blow-by gas is formed in the wall portion on the cylinder head side, and the orifice is formed on a joint pipe mounted on the passage for the blow-by gas for communicably connecting the blow-by pipe with the passage for the blow-by gas.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: April 13, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Hiroaki Isoshima, Kentaro Shiraishi
  • Patent number: 10946392
    Abstract: Certain exemplary aspects of the present disclosure are directed towards an apparatus for electrostatic fluid filtration. The apparatus utilizing alternating positive and negative electrodes in conjunction with filter media there between to filter contaminants from a fluid flow.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: March 16, 2021
    Inventors: Peter Lawrence Woods, Chase Andrews Rickson
  • Patent number: 10947875
    Abstract: A PCV valve mounting structure includes a cylinder head of an engine, an intake manifold coupled with the cylinder head to form a blow-by gas passage. A PCV valve is disposed in the blow-by gas passage. The PCV valve includes a valve case and a plurality of seal members elastically supporting the valve case on the cylinder head and the intake manifold. The PCV valve is configured to control a flow rate of the blow-by gas depending on the negative intake pressure of the engine. The PCV valve has a measuring passage configured to adjust the flow rate of the blow-by gas and positioned upstream of the seal members. An annular space is formed between the cylinder head and the valve case. The annular space extends in the lengthwise longitudinal axial direction from an upstream end of the valve case.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: March 16, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: Rikako Muramatsu
  • Patent number: 10927729
    Abstract: A positive crankcase ventilation (PCV) system for an internal combustion engine having an air induction system configured to supply air to the includes a PCV line configured to fluidly couple between a crankcase of the engine and the air induction system, a condenser disposed on the PCV line and configured to condense water vapor and fuel vapor contained in blow-by gases received from the crankcase to separate the water vapor and fuel vapor from the blow-by gases and form a water/fuel mixture and a lean blow-by gas, and an oil separator disposed on the PCV line and configured to receive the lean blow-by gas from the condenser and separate oil therefrom to form a filtered blow-by gas for return to the air induction system.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: February 23, 2021
    Assignee: FCA US LLC
    Inventors: Iain J Read, Timothy J Sullivan
  • Patent number: 10913076
    Abstract: An oil separator separating mist oil from processing-target gas includes: a case, a first partition wall and a lower, second partition wall, both partitioning vertically an internal space of the case; a partition dividing a space between the first and second partition walls into an introduction path and a first chamber; a supply hole vertically penetrating the second partition wall from the introduction path to a separation chamber; a communication hole vertically penetrating the second partition wall from the first chamber to the separation chamber; a rotor in the separation chamber; a center-side space in a center part of the rotor, the center-side space communicating with the supply hole through an open, upper part of the center-side space. The rotor separates the mist oil from the processing-target gas flowing from the center-side space to an outer periphery of the rotor, where the separated oil is emitted. The processing-target gas flows into the first chamber through the communication hole.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: February 9, 2021
    Assignee: TOKYO ROKI CO., LTD.
    Inventor: Kosaku Ishida
  • Patent number: 10907581
    Abstract: An internal combustion engine (10) fitted with a carburetor (40) is provided with a fire-resistant cover member (62) having a front wall (65A) facing an air inlet port (44) of the carburetor, and a breather tube (60) having an inlet end (60A) connected to a crank chamber (28) of the internal combustion engine main body, and an outlet end (60B) supported by the cover member at a position located between the front wall and the carburetor.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: February 2, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Atsushi Moroi, Yuki Hase
  • Patent number: 10890089
    Abstract: A PCED can include an outer can, an upper lid having an upper lid intake and an upper lid exhaust, a lower lid having a lower lid exhaust, and an internal frame disposed within the can. With the internal frame disposed within the can, first, second, third, and fourth chambers can be formed, with the first chamber containing a coalescing material. Gases from a combustion engine crankcase can enter the PCED via the upper lid intake, move through the chambers, and exit the PCED via the upper lid exhaust and return to the crankcase. While moving through the chambers, impurities within the gas convert to liquid form via condensation, collect in the second chamber, and can be subsequently drained from the PCED via the lower lid exhaust.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: January 12, 2021
    Inventor: Tracy George Lewis
  • Patent number: 10851741
    Abstract: An air cleaner backing plate for coupling to an engine disclosed herein includes a first side to be coupled to an engine and a second side opposite the first side. The backing plate further includes an intake aperture to be aligned with an air intake port of the engine and a tube coupled to the backing plate. The backing plate may further include a reservoir and/or a circular attachment coupled thereto.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: December 1, 2020
    Assignee: Arlen Ness Enterprises, Inc.
    Inventors: Cory A. Ness, Phillip B. Mitchell, Jr., Jeffrey D. Border
  • Patent number: 10830542
    Abstract: A method is provided for manufacturing a manifold assembly with internal fluid communication between a first manifold defining a first fluid chamber and a second manifold defining a second fluid chamber of the manifold assembly, the first manifold and the second manifold joined in parallel relationship along a longitudinally extending interface between a wall of the first manifold and a wall of the second manifold. The method includes: forming a first access port in a wall of one of the first manifold and the second manifold diametrically opposite the interface; forming a first fluid communication port extending through a wall of the first manifold and a wall of the second manifold at the interface and defining a first fluid passage between the first and second fluid chambers; and sealingly plugging the access port.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: November 10, 2020
    Assignee: CARRIER CORPORATION
    Inventors: Michael F. Taras, Bruce J. Poplawski, Arindom Joardar, Jack Leon Esformes, Tobias H. Sienel, Mel Woldesemayat
  • Patent number: 10830112
    Abstract: An oil separation device for the crankcase ventilation of an internal combustion engine comprises at least one oil separator with a gas inlet pipe, a gap-determining element, wherein an annular gap is formed or formable between the gap-determining element and an outlet end of the gas inlet pipe, and a baffle wall which is arranged in the flow direction behind the gap. The oil separation device has a driven actuator for adjusting the gap-determining element relative to the gas inlet pipe.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: November 10, 2020
    Assignee: BRUSS SEALING SYSTEMS GMBH
    Inventors: Torge Hinz, Mark Dreesen, Samuel Neumann, Tino Böttcher, Artur Knaus, Manfred Brand
  • Patent number: 10815939
    Abstract: In order to provide a separating device which has a simple design and is operable reliably and efficiently, it is proposed that the separating device comprises the following: at least one separating body for separating the impurities; an ejector device for producing a suction effect on an exit side of the at least one separating body; a supply device for supplying a drive medium to the ejector device, wherein, by means of the supply device, selectively a) compressed supply air from a supply air tract of the combustion engine, b) exhaust gas from an exhaust gas tract of the combustion engine and/or c) a mixture of compressed supply air and exhaust gas is suppliable as drive medium to the ejector device.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: October 27, 2020
    Assignees: ElringKlinger AG, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Stefan Dwenger, Roman Enne
  • Patent number: 10801378
    Abstract: An engine including: an exhaust manifold provided near one side surface of an engine; a turbocharger having an exhaust-side inlet connected to the exhaust manifold; and a rocker-arm-chamber-integrated intake manifold disposed on a cylinder head and integrally including a rocker arm chamber and an intake manifold. The intake manifold has a wall dividing the rocker arm chamber provided near one side surface of the engine and the intake manifold provided near another side surface thereof to isolate the rocker arm chamber and the intake manifold from each other. The rocker arm chamber has, in its upper portion, a positive crankcase ventilation device protruding therefrom and returning blowby gas to an intake system. The positive crankcase ventilation device has a blowby-gas discharge port connected with a gas conduit through which blowby gas is delivered to an intake-side inlet of the turbocharger.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: October 13, 2020
    Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventors: Tomoyuki Kimura, Hisato Inokuchi
  • Patent number: 10794245
    Abstract: An internal combustion engine having an engine block, a cylinder head, a crankcase and at least one cylinder includes a crankcase ventilation line connected to at least one intake line. The crankcase ventilation line is arranged at least predominantly within the internal combustion engine, in particular within the engine block and/or within the cylinder head, thereby greatly minimizing or eliminating the potential for release of crankcase gas to the environment.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: October 6, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Stefan Fischer, Christa Roddewig
  • Patent number: 10774730
    Abstract: Apparatuses, systems and methods for utilizing crankcase compression air to effect forced air induction (i.e. “boost”) into the combustion chamber of an internal combustion engine is provided. In some embodiments, the apparatuses are a supercharger apparatus that is attached to an existing engine. In other embodiments, the supercharger components are located within the structure of a novel engine itself. An embodiment of the apparatus includes a conduit that includes three inlets: 1) an inlet that is capable of being placed in fluidic communication with the crankcase chamber of an engine; 2) an inlet that is capable of being placed in fluidic communication with an intake to a combustion chamber of the engine; and 3) an inlet in fluidic communication with the atmosphere.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: September 15, 2020
    Assignee: NAUTILUS ENGINEERING, LLC
    Inventor: Matthew Riley
  • Patent number: 10774704
    Abstract: In an engine head cover, an upper portion of a partition plate 5, which partitions an inside of a head cover 3 into upper and lower portions, forms a blowby gas passage W having an inlet 6 and an outlet 7 communicating with an intake path 9. A PCV valve 14 disposed on the outlet 7 side, a filter 13 disposed on the inlet 6 side, and a labyrinth 15 disposed between the PCV valve 14 and the filter 13 are provided. A recovery hole 23 which causes a flowdown of trapped oil is formed at a portion on a downstream side of the filter 13 in a flow direction of a blowby gas in the blowby gas passage W and on a lower side of the labyrinth 15 and the pressure regulating valve 14.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: September 15, 2020
    Assignee: KUBOTA Corporation
    Inventors: Hiroaki Isoshima, Kentaro Shiraishi, Naotaro Nagai
  • Patent number: 10774703
    Abstract: An oil mist separator includes a housing and an oil separating part which separates oil mist in blow-by gas. The oil separating part is composed of a first oil separating part and a second oil separating part. The housing is provided inside with a partition wall which defines chambers formed for the respective oil separating parts, and second nozzles which jet out blow-by gas are provided in a second partition wall which defines a second chamber in which the downstream-side second oil separating part is provided. The second nozzles can serve, for example, as passages for discharging the oil separated by the second oil separating part toward a drain pipe which is provided in a first chamber.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: September 15, 2020
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Hideto Morishita, Yoji Horiuchi, Naritsune Miyanaga
  • Patent number: 10774705
    Abstract: An oil separator unit including an upstream member having an opening through which the blowby gas passes, a downstream member having a hit portion hit by the blowby gas, and a porous member trapping the oil mist contained in the blowby gas that has passed through the through hole. The upstream member includes an upstream surface facing a first surface of the porous member and a pair of recesses formed in substantially U-shapes along circumference portions in both end sides on an upstream surface of the upstream member, and the downstream member includes a pair of flange parts formed in substantially U-shapes so as to fit in the pair of recesses.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: September 15, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventor: Kazushi Tada
  • Patent number: 10767608
    Abstract: An air intake assembly includes a filter element and an intake conduit having a first end supporting the filter element. The first end forms an inlet opening having a first shape and a second end being adapted for attachment to an engine. The second end forms an outlet opening having a second shape different than the first shape of the inlet opening. The intake conduit also includes a body having an inner wall defining a passageway coupling the inlet and outlet openings. The inner wall has a maximum lateral dimension measured transverse to a central axis of the passageway within a plane that interests both the inlet and outlet openings. The maximum lateral dimension is located adjacent the outlet opening.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: September 8, 2020
    Assignee: Harley-Davidson Motor Company Group, LLC
    Inventors: Mark Dane, Bob Iverson
  • Patent number: 10738721
    Abstract: A blow-by gas supply device includes an upstream-side passage, a downstream-side passage, a gas passage, a bypass passage, a valve mechanism, and a valve control unit. The device is provided in an engine including a compressor, and recirculates blow-by gas upstream of the compressor. The upstream-side passage is coupled to an input port of the compressor. The downstream-side passage is coupled to an output port of the compressor. The gas passage is coupled to the upstream-side passage and guides the blow-by gas from inside of the engine to the upstream-side passage. The bypass passage is coupled to the upstream-side passage and the downstream-side passage and guides the intake air from the downstream side passage to the upstream side passage. The valve mechanism is provided in the bypass passage and switched between communication and cutoff states. The valve control unit controls the valve mechanism in the communication or cutoff state.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: August 11, 2020
    Assignee: Subaru Corporation
    Inventor: Tomoya Ozawa
  • Patent number: 10731529
    Abstract: An oil separator includes a case that has an inflow port, an outflow port, and an oil separation portion. The case has a first wall portion and a second wall portion that constitute a flow channel, and a partition wall portion that connects the first wall portion and the second wall portion. The partition wall portion partitions the flow channel into an upstream-side flow channel and a downstream-side flow channel. The oil separation portion has a constriction hole and a step portion. The step portion has a collision face located on the axis of the constriction hole and configured such that blow-by gas that passes through the constriction hole collides against the collision face, and allows oil that collects on the step portion to be discharged into the upstream-side flow channel through the constriction hole.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: August 4, 2020
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Makoto Sazawa, Naritsune Miyanaga
  • Patent number: 10704434
    Abstract: As a further improvement of the technique of minimizing or preventing excessive cooling of an oil separator, an effective blow-by gas heating apparatus which minimizes or solves the problems due to frozen blow-by gas in an engine externally equipped with an oil separator is provided. The blow-by gas heating apparatus includes: a heat emitting structure abutted onto an oil separator configured to trap and remove oil from blow-by gas. The heat emitting structure has a heat emitting case including inside a passage for engine cooling water. The heat emitting case includes a ceiling wall being in surface-contact from below with a bottom surface of the oil separator.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: July 7, 2020
    Assignee: KUBOTA Corporation
    Inventors: Mitsuhiro Akita, Kohei Sawada
  • Patent number: 10669905
    Abstract: A separation portion of an oil separator is located upward from an opening of a second blow-by gas passage portion in an outer surface of a cylinder block. A connection passage connects the separation portion and the second blow-by gas passage portion. At least part of the connection passage located toward the second blow-by gas passage portion serves as a first passage portion. The second blow-by gas passage portion and the first passage portion serve as an intermediate passage. A step is arranged in the intermediate passage at an intermediate portion with respect to an extension direction of the intermediate passage.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: June 2, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Koichi Nishitani
  • Patent number: 10662906
    Abstract: A valve arrangement included in an engine peripheral structure provided with an intake system in an engine room, includes: a low-pressure intake passage of the intake system, arranged around an engine main body mounted in the engine room and connected to a passage upstream of a supercharger of the intake system in an intake direction; a high-pressure intake passage of the intake system, connected to a passage downstream of the supercharger in the intake direction; and an air bypass valve connected between the low-pressure intake passage and the high-pressure intake passage. The air bypass valve is fixed on a part of the low-pressure intake passage facing the engine main body.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: May 26, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Katsushi Hashimoto
  • Patent number: 10655515
    Abstract: This blow-by gas recirculation device for an internal combustion engine is provided with a vacuum pump which supplies negative pressure to a brake booster and usable for recirculation of blow-by gas to an intake passage. This device includes: a PCV device for recirculating blow-by gas in a crankcase to the intake passage; a ventilation shortage region determination unit which determines whether or not an operational region of the engine is a PCV ventilation flow rate shortage region; and a brake negative pressure determination unit which determines whether or not the negative pressure of the brake booster is secured. The vacuum pump ventilates blow-by gas in the crankcase only when the determination units determines that the operational region is the PCV ventilation flow rate shortage region and that the negative pressure is secured. This reduces a contact risk of blow-by gas with engine oil, and inhibits the degradation of the oil.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: May 19, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Yaguchi, Takeshi Fukui
  • Patent number: 10619534
    Abstract: Methods and systems are provided for using a crankcase vent tube pressure or flow sensor for diagnosing a location and nature of crankcase system integrity breach. The same sensor can also be used for diagnosing air filter plugging and PCV valve degradation. Use of an existing sensor to diagnose multiple engine components provides cost reduction and sensor compaction benefits.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 14, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Robert Roy Jentz, John Eric Rollinger
  • Patent number: 10612500
    Abstract: An intake manifold includes: multiple branch pipes having downstream ends fastened to a front or rear surface of a cylinder head; a main pipe connected to upstream ends of the branch pipes; and a cover including a cover main body attached to an upper surface of a portion of at least one of the branch pipes to define a blow-by gas passage, and a protrusion protruding upward from the cover main body, the portion of the at least one of the branch pipes being adjacent to the cylinder head, wherein the protrusion is spaced apart from the cylinder head in a fore and aft direction such that a fuel line positioned above the downstream ends of the branch pipes is interposed between the protrusion and the cylinder head in the fore and aft direction, the protrusion being positioned to overlap a part of the fuel line as seen from front.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: April 7, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Keisuke Itagaki
  • Patent number: 10612499
    Abstract: This air intake apparatus includes an air intake apparatus main body including a plurality of pieces bonded to each other along a split plane and an external gas passage formed inside the air intake apparatus main body by bonding the plurality of pieces to each other and including an external gas receiving port that directly receives external gas from a cylinder head and an external gas introduction port that introduces the external gas into a surge tank.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: April 7, 2020
    Assignees: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yu Sakurai, Naoki Tajima, Tomohisa Senda, Hideaki Teramoto, Masaki Makihara