Patents by Inventor Yukio Konishi

Yukio Konishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200025048
    Abstract: The disclosure prevents oil separated from blow-by gas by using a breather chamber and discharged to a valve chamber from leaking to the outside from a breather chamber mounting surface between the breather chamber and the valve chamber. A breather chamber includes cylindrical drain passages communicating with a valve chamber, and tips of the drain passages exceed breather chamber mounting surfaces of a cylinder head and a head cover and protrude from opening parts toward a side of the valve chamber, so the oil separated from the blow-by gas in the breather chamber can be reliably discharged to the valve chamber and prevented from leaking to the outside from the breather chamber mounting surfaces.
    Type: Application
    Filed: June 25, 2019
    Publication date: January 23, 2020
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Yukio KONISHI, Hikaru UENO
  • Patent number: 10533471
    Abstract: In an internal combustion engine, the cylinder block includes a first blowby gas passage and a first oil return passage. The cylinder head includes a second blowby gas passage connecting the first blowby gas passage with a connection passage connected with a gas-liquid separator, an oil return chamber separated from a valve operating chamber and the second blowby gas passage by first and second partition walls, respectively, and provided with a first oil return hole connected with the gas-liquid separator, and a second oil return passage connecting the valve operating chamber with the first oil return passage. The first partition wall is formed with a second oil return hole connecting the oil return chamber with the valve operating chamber. The second partition wall is formed with a ventilation hole connecting the oil return chamber with the second blowby gas passage at a higher position than the second oil return hole.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: January 14, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yukio Konishi, Kazushi Tada
  • Patent number: 10421347
    Abstract: Provided is a head cover structure of an engine, which is capable of increasing supporting rigidity of a head cover. The engine includes a driving force transmission mechanism for transmitting a driving force of a crankshaft to a valve train, in which on one end side in a cylinder row direction of the head cover, a bulging portion for covering an upper side of the driving force transmission mechanism is provided, and an engine mounting portion is attached to the bulging portion. The bulging portion is provided with an inclined surface portion having an inclined surface inclined downwardly toward the other end side in the cylinder row direction, and the inclined surface is formed to rise upwardly from an intermediate position in the cylinder row direction so as to be continuous with a top surface of the bulging portion on the one end side in the cylinder row direction.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 24, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yukio Konishi, Hirotaka Ogino
  • Patent number: 10267189
    Abstract: A variable valve actuation device includes a plurality of valve lifter. Each valve lifter slidable in a lifter support hole between an upper position and a lower position. A valve rest recess communicating with a valve rest chamber opens out at an outer circumferential surface of the valve lifter, and a valve rest supply port of a valve rest passage opens out at an inner circumferential surface of the lifter support hole in such a positional relationship that the valve rest passage and the valve rest chamber communicate with each other when the valve lifter is at the upper position, and continue to communicate with each other until the valve lifter has moved downward to a shut-off position located at a prescribed part of a down stroke from the upper position. The communication between the valve rest passage and the valve rest chamber shut off at the shut-off position.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: April 23, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kaori Takehana, Yukio Konishi, Chikara Tanaka
  • Patent number: 10119452
    Abstract: An internal combustion engine includes: an engine body; an exhaust pipe fastened to the engine body; an engine body cooling water passage provided in the engine body and having a cooling water injection port and a cooling water discharge port; an exhaust pipe cooling water passage provided in the exhaust pipe; a supply passage that connects the engine body cooling water passage with the exhaust pipe cooling water passage such that cooling water flows from the engine body cooling water passage to the exhaust pipe cooling water passage through the supply passage; and a return passage that connects the engine body cooling water passage with the exhaust pipe cooling water passage such that the cooling water flows from the exhaust pipe cooling water passage to the engine body cooling water passage through the return passage.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: November 6, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Yukio Konishi
  • Patent number: 10107171
    Abstract: A cooling structure of an internal combustion engine includes a cylinder block, an inner-block coolant passage, a cylinder head, and an inner-head coolant passage. In the cylinder block, cylinders are provided in a row in a cylinder row direction. The inner-head coolant passage is provided in the cylinder head and includes a main coolant passage, an upper exhaust side coolant passage, and a lower exhaust side coolant passage. The main coolant passage is provided above combustion chambers and extends in the cylinder row direction so that a coolant flows into the main coolant passage from the inner-block coolant passage at a first end side of the cylinder head in the cylinder row direction and so that the coolant flows out from the main coolant passage at a second end side of the cylinder head opposite to the first end side in the cylinder row direction.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: October 23, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hirotaka Ogino, Takayuki Takatoku, Yukio Konishi
  • Patent number: 10066553
    Abstract: Provided is a V engine which uses common cylinder heads, and permits favorable arrangement of oil passages so as to accommodate various oil regulating features that are required to operate valve property varying mechanisms. Each end of each cylinder head is formed with a plurality of distribution oil passages opening out at an upper surface of the cylinder head for supplying oil pressure from a main gallery to a valve actuating mechanism. A pair of oil passage connecting members internally defining mutually different connecting oil passages are attached to the upper surfaces of the corresponding end parts of the respective cylinder heads.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: September 4, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Yukio Konishi
  • Publication number: 20180179922
    Abstract: A variable valve actuation device includes a plurality of valve lifter. Each valve lifter slidable in a lifter support hole between an upper position and a lower position. A valve rest recess communicating with a valve rest chamber opens out at an outer circumferential surface of the valve lifter, and a valve rest supply port of a valve rest passage opens out at an inner circumferential surface of the lifter support hole in such a positional relationship that the valve rest passage and the valve rest chamber communicate with each other when the valve lifter is at the upper position, and continue to communicate with each other until the valve lifter has moved downward to a shut-off position located at a prescribed part of a down stroke from the upper position. The communication between the valve rest passage and the valve rest chamber shut off at the shut-off position.
    Type: Application
    Filed: December 6, 2017
    Publication date: June 28, 2018
    Inventors: Kaori Takehana, Yukio Konishi, Chikara Tanaka
  • Publication number: 20170362975
    Abstract: In an internal combustion engine, the cylinder block includes a first blowby gas passage and a first oil return passage. The cylinder head includes a second blowby gas passage connecting the first blowby gas passage with a connection passage connected with a gas-liquid separator, an oil return chamber separated from a valve operating chamber and the second blowby gas passage by first and second partition walls, respectively, and provided with a first oil return hole connected with the gas-liquid separator, and a second oil return passage connecting the valve operating chamber with the first oil return passage. The first partition wall is formed with a second oil return hole connecting the oil return chamber with the valve operating chamber. The second partition wall is formed with a ventilation hole connecting the oil return chamber with the second blowby gas passage at a higher position than the second oil return hole.
    Type: Application
    Filed: June 2, 2017
    Publication date: December 21, 2017
    Inventors: Yukio Konishi, Kazushi Tada
  • Publication number: 20170350324
    Abstract: Provided is a V engine which uses common cylinder heads, and permits favorable arrangement of oil passages so as to accommodate various oil regulating features that are required to operate valve property varying mechanisms. Each end of each cylinder head is formed with a plurality of distribution oil passages opening out at an upper surface of the cylinder head for supplying oil pressure from a main gallery to a valve actuating mechanism. A pair of oil passage connecting members internally defining mutually different connecting oil passages are attached to the upper surfaces of the corresponding end parts of the respective cylinder heads.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 7, 2017
    Inventor: Yukio Konishi
  • Publication number: 20170335744
    Abstract: An internal combustion engine includes: an engine body; an exhaust pipe fastened to the engine body; an engine body cooling water passage provided in the engine body and having a cooling water injection port and a cooling water discharge port; an exhaust pipe cooling water passage provided in the exhaust pipe; a supply passage that connects the engine body cooling water passage with the exhaust pipe cooling water passage such that cooling water flows from the engine body cooling water passage to the exhaust pipe cooling water passage through the supply passage; and a return passage that connects the engine body cooling water passage with the exhaust pipe cooling water passage such that the cooling water flows from the exhaust pipe cooling water passage to the engine body cooling water passage through the return passage.
    Type: Application
    Filed: May 22, 2017
    Publication date: November 23, 2017
    Inventor: Yukio Konishi
  • Publication number: 20170096056
    Abstract: Provided is a head cover structure of an engine, which is capable of increasing supporting rigidity of a head cover. The engine includes a driving force transmission mechanism for transmitting a driving force of a crankshaft to a valve train, in which on one end side in a cylinder row direction of the head cover, a bulging portion for covering an upper side of the driving force transmission mechanism is provided, and an engine mounting portion is attached to the bulging portion. The bulging portion is provided with an inclined surface portion having an inclined surface inclined downwardly toward the other end side in the cylinder row direction, and the inclined surface is formed to rise upwardly from an intermediate position in the cylinder row direction so as to be continuous with a top surface of the bulging portion on the one end side in the cylinder row direction.
    Type: Application
    Filed: December 9, 2016
    Publication date: April 6, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yukio Konishi, Hirotaka Ogino
  • Patent number: 9566855
    Abstract: Provided is a head cover structure of an engine, which is capable of increasing supporting rigidity of a head cover. The engine includes a driving force transmission mechanism for transmitting a driving force of a crankshaft to a valve train, in which the head cover includes a bulging portion for covering an upper side of the driving force transmission mechanism on one end side thereof in a cylinder row direction, and an engine mounting portion is attached to the bulging portion. The bulging portion is provided with an inclined surface portion having an inclined surface inclined downwardly toward the other end side in the cylinder row direction, and the inclined surface is formed to rise upwardly from an intermediate position in the cylinder row direction so as to be continuous with a top surface of the bulging portion on the one end side in the cylinder row direction.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: February 14, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yukio Konishi, Hirotaka Ogino
  • Patent number: 9540973
    Abstract: An oil passage structure of a dry sump engine includes an oil recovery passage, at least one first communicating hole, and a first oil suction passage. The oil recovery passage extends in a direction in which a cylinder bank extends and is disposed so that at least part of the oil recovery passage is located outward of an external lower end portion of a valve gear chamber of a cylinder head along a junction between a side wall portion of the cylinder head and a bottom surface of the valve gear chamber in a state where the dry sump engine is mounted on a vehicle in an inclined manner. The at least one first communicating hole is provided in the side wall portion so as to connect the valve gear chamber of the cylinder head and the oil recovery passage.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: January 10, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hirotaka Ogino, Yukio Konishi, Takuya Ono, Takuma Adachi, Hiroaki Sato, Hidehiko Kamiyama
  • Publication number: 20160186641
    Abstract: A cooling structure of an internal combustion engine includes a cylinder block, an inner-block coolant passage, a cylinder head, and an inner-head coolant passage. In the cylinder block, cylinders are provided in a row in a cylinder row direction. The inner-head coolant passage is provided in the cylinder head and includes a main coolant passage, an upper exhaust side coolant passage, and a lower exhaust side coolant passage. The main coolant passage is provided above combustion chambers and extends in the cylinder row direction so that a coolant flows into the main coolant passage from the inner-block coolant passage at a first end side of the cylinder head in the cylinder row direction and so that the coolant flows out from the main coolant passage at a second end side of the cylinder head opposite to the first end side in the cylinder row direction.
    Type: Application
    Filed: December 22, 2015
    Publication date: June 30, 2016
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Hirotaka OGINO, Takayuki TAKATOKU, Yukio KONISHI
  • Patent number: 9371748
    Abstract: A holding structure of an oil control valve includes an oil control valve, a cam holder, and a head cover. A valve portion is provided on a second end side of the oil control valve opposite to a first end side in a longitudinal direction. The valve portion is configured to switch oil passages by driving a solenoid portion and has a drain hole at a shaft end portion of the valve portion. The cam holder is attached to a cylinder head of an internal combustion engine and rotatably supports a camshaft of the internal combustion engine. A valve portion side of the oil control valve is embedded in the cam holder and supported by the cam holder. An axis of the oil control valve in the longitudinal direction is oriented towards the camshaft. The head cover is provided on an upper portion of the cylinder head.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: June 21, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yukio Konishi, Hirotaka Ogino, Takayuki Takatoku
  • Publication number: 20150225570
    Abstract: Provided is a method for producing a surface treated base including a process of preparing a masking solution by heating a masking agent including paraffin to a temperature more than the melting point of the paraffin, a process of patterning the masking solution on a substrate to form a mask pattern, a process of surface treating the substrate having the mask pattern and a process of producing the surface treated base by removing the masking agent constituting the mask pattern using a refrigerant having a temperature less than the melting point of the paraffin. The masking agent is readily removed without adversely affecting the formed pattern after surface treatment.
    Type: Application
    Filed: August 1, 2013
    Publication date: August 13, 2015
    Inventors: Yukio Konishi, Minsu Kim
  • Publication number: 20150174594
    Abstract: A device for applying a hot melt coating material only on the non-treated surfaces of a coating object, which comprises treated surfaces where surface treatment is to be performed and non-treated surfaces where surface treatment is not to be performed, the device comprising: an inkjet unit for discharging melted coating material toward the coating object; a supply unit for supplying the melted coating material to the inkjet unit; and a heating means for melting the coating material, the heating means being provided on the supply unit. Another invention removes coating material, which is a paraffin-containing masking agent and has been coated only on the non-treated surfaces of the coating object, still in solid form from the coating object using a refrigerant of a temperature less than the melting point of paraffin or in liquid form from the coating object using a fluid at or above the melting point of paraffin.
    Type: Application
    Filed: June 13, 2013
    Publication date: June 25, 2015
    Inventors: Minsu Kim, Yukio Konishi
  • Publication number: 20150164659
    Abstract: The purpose of the present invention is to provide a structure for linking an upper prosthetic leg part and a lower prosthetic leg part in a revolutionary prosthetic leg affording advantageous working effects not obtained in the prior art. A linking structure for an upper prosthetic leg part 1 fitted to the body, and a lower prosthetic leg part 2 linked to this upper prosthetic leg part 1 to constitute a prosthetic leg F, a ground-contacting part 2a being provided at a lower end; wherein the structure is constituted by a linking part 3 provided to either the lower prosthetic leg part 2 or the upper prosthetic leg part 1, and a mated linking part 4 provided to the other and adapted to mate with the linking part 3; and having retaining elements 6, 7 which protrude into the mating aperture 4a of the mated linking part 4 and retain the linking part 3 positioned within the mating aperture 4a.
    Type: Application
    Filed: July 26, 2013
    Publication date: June 18, 2015
    Inventor: Yukio KONISHI
  • Publication number: 20150129331
    Abstract: Provided is a head cover structure of an engine, which is capable of increasing supporting rigidity of a head cover. The engine includes a driving force transmission mechanism for transmitting a driving force of a crankshaft to a valve train, in which on one end side in a cylinder row direction of the head cover, a bulging portion for covering an upper side of the driving force transmission mechanism is provided, and an engine mounting portion is attached to the bulging portion. The bulging portion is provided with an inclined surface portion having an inclined surface inclined downwardly toward the other end side in the cylinder row direction, and the inclined surface is formed to rise upwardly from an intermediate position in the cylinder row direction so as to be continuous with a top surface of the bulging portion on the one end side in the cylinder row direction.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 14, 2015
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yukio Konishi, Hirotaka Ogino