Camshaft Patents (Class 123/90.34)
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Patent number: 12221939Abstract: A device for rotatable mounting of a camshaft of an internal combustion engine. The device includes a first bearing body with a receiver for rotatable mounting of the camshaft. The device has a cylinder head or a fixing frame for fixing the first bearing body. The device has a first fixing means which fixes the first bearing body to the cylinder head or fixing frame. The first fixing means is the sole fixing means which fixes the first bearing body to the cylinder head or fixing frame.Type: GrantFiled: August 17, 2018Date of Patent: February 11, 2025Assignee: MAN Truck &Bus AGInventor: Peter Bogdanski
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Patent number: 12209518Abstract: A spacer for a valvetrain in an engine system includes a spacer body defining a spacer axis and including a through-bore extending from a first axial end to a second axial end, an outer arcuate surface, and an inner arcuate surface having an oil feed inlet. The spacer further includes an orientation element extending from the spacer body and defining an orientation axis transverse to the spacer axis, and including an inner orientation surface and an outer orientation surface. The spacer further includes an oil application structure defining a structure axis oriented transverse to both the spacer axis and the orientation axis, and including a plurality of oil spray channels, each respective one of the plurality of oil spray channels including an oil outlet at a termination point and being fluidly connected to the oil feed inlet.Type: GrantFiled: March 20, 2024Date of Patent: January 28, 2025Assignee: Caterpillar Inc.Inventors: Quinton Burcar, Jeffrey C. Krieger, Paul K. Stark
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Patent number: 12187398Abstract: An outboard propulsion system comprising an engine configured to receive oil; an oil pan configured to receive oil from the engine; and an oil reservoir configured to receive oil from the oil pan and provide oil to the engine, in use.Type: GrantFiled: October 23, 2023Date of Patent: January 7, 2025Assignee: Caudwell Marine LimitedInventor: Scott Bredda
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Patent number: 12091994Abstract: There is provided a variable valve timing system including: an intake side camshaft and an exhaust side camshaft disposed on a cylinder head; and a variable valve device attached to one end portion of the intake side camshaft. The accommodating wall on an exhaust side of the cylinder head is positioned more inward in a vehicle width direction than the accommodating wall on an intake side of the cylinder head. A first bolt for fixing the intake side of the cylinder head to a cylinder is disposed more inward in the vehicle width direction than the accommodating wall on the intake side. A second bolt for fixing the exhaust side of the cylinder head to the cylinder is disposed more outward in the vehicle width direction than the accommodating wall on the exhaust side.Type: GrantFiled: January 17, 2023Date of Patent: September 17, 2024Assignee: SUZUKI MOTOR CORPORATIONInventor: Yasuto Takashiba
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Patent number: 11352915Abstract: A cylinder head includes a hydraulic lash adjuster attachment portion provided with a hydraulic lash adjuster bore in which a hydraulic lash adjuster is inserted; a main oil provided at a position away from the hydraulic lash adjuster bore; a connection oil passage which connects the hydraulic lash adjuster bore and the main oil passage; and a side wall that defines a radially outer portion of the hydraulic lash adjuster bore. The side wall includes a first side wall portion and a second side wall portion that is positioned closer to an opening of the hydraulic lash adjuster bore than the first side wall portion is. A thickness of the second side wall portion is greater than a thickness of the first side wall portion.Type: GrantFiled: December 4, 2019Date of Patent: June 7, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hirotaka Takeuchi
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Patent number: 10968792Abstract: An engine oil passage structure for an engine contributing to downsizing the engine and achieving protection of an oil passage against external forces is provided. Provided is an oil passage structure for an engine installed in a small vehicle, the engine including an engine body formed of a crankcase and a cylinder block and a cylinder head stacked inclined vehicle frontward on the crankcase, the crankcase, the cylinder block, and the cylinder head being integrally fastened. The oil passage structure includes, near a bent part formed by a case front wall of the crankcase and a cylinder front wall of the cylinder block forming a valley part by an obtuse angle, a right-left direction oil passage extending in a right-left direction along the valley part.Type: GrantFiled: March 26, 2019Date of Patent: April 6, 2021Assignee: Honda Motor Co., Ltd.Inventors: Takahiro Iwama, Dai Kataoka, Yuichi Tawarada
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Patent number: 10851686Abstract: The present invention is an internal combustion engine composed of a plurality of cylinders arranged into banks. Located near the mid-point of each bank of cylinders is a section formed with passages that are configured to provide distribution and recovery of cooling and lubrication fluids. This section is located such that the path of these fluids begins and ends at a mid-point so as to provide a shortened path across each half of the bank of cylinders within which the section is located.Type: GrantFiled: June 10, 2016Date of Patent: December 1, 2020Assignee: Sixteen Power, LLCInventors: Caleb Newman, Thomas Robinson
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Patent number: 10683784Abstract: The oil mist separator includes a separator case, a gas inlet portion, a gas outlet portion, a separating component and a wall portion. The separator case is formed with a gas flow path. The gas inlet portion introduces the blow-by gas into the separator case on one side of the gas flow path. The gas outlet portion discharges the blow-by gas out of the separator case on the other side of the gas flow path. The separating component is disposed in the separator case and located between the gas inlet and outlet portions to separate the oil mist from the blow-by gas when the blow-by gas flows along the gas flow path. The wall portion is erected on the bottom wall in the separator case and faces the gas outlet portion at a position leaning toward the gas outlet portion between the separating component and the gas outlet portion.Type: GrantFiled: November 20, 2018Date of Patent: June 16, 2020Assignee: Honda Motor Co., Ltd.Inventors: Kazushi Tada, Yuki Tomitani, Yohei Kanai
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Patent number: 10612425Abstract: An engine device including, in a cylinder block thereof, a cylinder bore, a cam chamber accommodating a camshaft, a push-rod chamber accommodating a push-rod, and a tappet holder configured to hold a tappet in a slidable manner, the tappet being configured to transmit the drive force from the camshaft to the push-rod. The tappet holder partitions the cam chamber and the push-rod chamber. A bypass passage communicating the cam chamber with the push-rod chamber is formed between the tappet holder and the cylinder bore.Type: GrantFiled: March 29, 2017Date of Patent: April 7, 2020Assignee: YANMAR CO., LTD.Inventor: Hiroaki Naganawa
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Patent number: 10584620Abstract: A valve actuating device includes a camshaft, a cam, and a lubricant conducting device. The camshaft has an oil supply duct extending in a longitudinal direction of the camshaft and a discharge orifice extending in a radial direction of the camshaft and in fluid communication with the oil supply duct. The cam is fixedly mounted to the camshaft to rotate with the camshaft, the cam having a contact surface and a lateral wall facing in an axial direction of the camshaft towards the discharge orifice. The lubricant conducting device is arranged to direct oil over the lateral wall of the cam towards the contact surface.Type: GrantFiled: June 15, 2017Date of Patent: March 10, 2020Assignee: Nissan Motor Co., Ltd.Inventors: Jean-François Moulin, Etienne De Malet, Sylvie Foreau-Johan
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Patent number: 10494959Abstract: A camshaft and methods of installing a camshaft, the camshaft having at least one detachable bearing journal to enable varied camshaft designs to be assembled into an engine.Type: GrantFiled: May 11, 2011Date of Patent: December 3, 2019Assignee: AGAP HBInventors: Reine Gustafsson, Fredrik Andersson
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Patent number: 10400643Abstract: An oil supply path passes through members separate from a cylinder head (4) to supply a lubricant to bearings (73, 74) of camshaft journals. The oil supply path includes an oil supply passage (66) for the camshaft above the camshaft (19, 20), a connection passage (64) for the camshaft between the oil supply passage for the camshaft and an internal passage (61, 62) in the cylinder head (4), and branch oil passages (68) for the camshaft journals. Each branch oil passage branches off from the oil supply passage for the camshaft, and is connected to one of the bearings (73, 74) from above. Each of the branch passages includes a throttle (168) with a smaller cross-sectional flow area than the oil supply passage for the camshaft.Type: GrantFiled: March 14, 2017Date of Patent: September 3, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Takashi Kashiwabara, Tsuyoshi Yamamoto, Yasushi Nakahara, Kouichi Shimizu
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Patent number: 10393241Abstract: The invention relates to a camshaft, especially for motor vehicle engines, comprising a hollow outer shaft (1) and an inner shaft (2) arranged coaxially in the outer shaft (1) and mounted in such a way that it can rotate in relation to the outer shaft (1). Said camshaft also comprises first cams (3a) arranged on the outer shaft (1) in a rotationally fixed manner, and second cams (3b) that are arranged on the outer shaft (1) and fixed to the inner shaft (2). According to the invention, a supporting element (7) is provided on at least one of the end regions of the inner shaft (2), said supporting element projecting past the outer shaft (1) in the radial direction. An outer peripheral surface (8) of the outer shaft (1) and an associated inwardly facing surface (9) of the supporting element (7) form a radial bearing.Type: GrantFiled: August 16, 2012Date of Patent: August 27, 2019Assignee: THYSSENKRUPP PRESTA TECCENTER AGInventors: Michael Kunz, Bernd Mann, Markus Melzer, Juergen Meusel
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Patent number: 10151223Abstract: Systems and methods for operating an engine with deactivating valves are presented. In one example, a groove in a camshaft controls oil flow to a valve operator that selectively activates and deactivates a poppet valve of a cylinder. The groove moves with the camshaft so that oil delivery to the valve operator is timed properly to deactivate and reactivate the cylinder.Type: GrantFiled: February 10, 2017Date of Patent: December 11, 2018Assignee: Ford Global Technologies, LLCInventor: Gregory Patrick McConville
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Patent number: 9856763Abstract: A oil supply structure of an internal combustion engine, includes: an oil flowing path which is formed to extend along a camshaft vertically above at least one of intake and exhaust camshafts (3a, 3b) of the internal combustion engine, and in which oil flows; an oil supply portion provided on one end side of the oil flowing path, and supplying oil to the oil flowing path; and oil ejection holes aligned along the oil flowing path, provided to be opened vertically downward, and through which the oil of the oil flowing path is ejected toward the camshaft, wherein, in the oil flowing path, a partitioning portion, which extends along the oil ejection holes toward the other end side opposite to the oil supply portion from one end side, and partitions the inside of the oil flowing path, is provided.Type: GrantFiled: May 6, 2016Date of Patent: January 2, 2018Assignee: AISIN SEIKI KABUSHIKI KAISHAInventor: Naoki Kira
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Patent number: 9481479Abstract: A container sealing apparatus is provided, comprising a sealing tool having a lower tool half and an upper tool half; a feed lane for transferring one or more containers to and away from means for transferring containers on to the lower tool half of the sealing tool; and a lifting mechanism for moving the lower tool half towards the upper tool half. The container sealing apparatus also comprises an elongate container guide extending along the feed lane and sealing tool to laterally locate containers as they are transported along the teed lane and sealing tool, and control apparatus adapted to adjust the lateral position of at least the part of said container guide extending along said feed lane.Type: GrantFiled: February 10, 2012Date of Patent: November 1, 2016Assignee: ISHIDA EUROPE LIMITEDInventors: Lee Michael Vine, Graham Andrew Charles Neale
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Patent number: 9115614Abstract: Provided is a lubricant feed mechanism for an engine in which space above a cam cap is not used. A lubricant feed mechanism for an engine is configured to feed lubricant through a cylinder head, a camshaft, and a cam cap to a cam of a valve gear. The mechanism includes an oil feed member that is disposed in the cam cap such that an upper end thereof is set at a lower level than an upper end of the cam cap in a height-wise direction and has an oil passage configured to guide lubricant to be fed through the cam cap to the cam.Type: GrantFiled: May 30, 2013Date of Patent: August 25, 2015Assignee: TAIHO KOGYO CO., LTD.Inventor: Yasuhiro Hikita
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Patent number: 9027522Abstract: Embodiments in accordance with the present disclosure may provide a camshaft having a central oil passage and a radial passage to supply oil from the central passage to a bearing surface. The camshaft may include a filter disposed within the central passage which may allow oil to pass through the radial passage to the bearing surface, and which may prevent particles larger than a predetermined size to pass to the bearing surface.Type: GrantFiled: October 17, 2012Date of Patent: May 12, 2015Assignee: Ford Global Technologies, LLCInventors: Peter Michael Oravetz, Ed Waszczenko
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Publication number: 20150122210Abstract: An engine, including a crankcase, a cylinder body extending upward from the crankcase, a cylinder head coupled to an upper portion of the cylinder body, a cylinder head cover coupled to an upper portion of the cylinder head, and a gasket disposed between the cylinder head and the cylinder head cover. The gasket includes a projection that projects along directions from an inner wall of the cylinder head and from the cylinder head cover toward a camshaft. The projection is located in a cam chain chamber, which is formed in the engine along the cylinder body, the cylinder head and the cylinder head cover, and a cam chamber formed in the engine along the cylinder head and the cylinder head cover. The projection has an oil supply portion disposed in the cam chain chamber and above a cam chain guide guiding a cam chain.Type: ApplicationFiled: October 31, 2014Publication date: May 7, 2015Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventor: Kenji AOYAGI
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Patent number: 9004026Abstract: An internal combustion engine may include at least one camshaft mounted via at least one bearing with at least one phase adjuster. The at least one bearing may be a rolling bearing. An oil feed ring may surround the camshaft adjacent to the rolling bearing, wherein the oil feed ring may have at least one external annular channel and at least one first radial bore aligned with a second radial bore in the camshaft. An outer diameter of the oil feed ring may be smaller than an outer diameter of the rolling bearing. An oil supply of the at least one phase adjuster may be introduced via an oil gallery defined in a cylinder head through the annular channel through the second radial bore into the camshaft.Type: GrantFiled: June 14, 2012Date of Patent: April 14, 2015Assignee: Mahle International GmbHInventors: Thomas Flender, Michael Kreisig, Antonio Menonna, Falk Schneider, Stefan Steichele
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Publication number: 20150090210Abstract: A cam bearing lubrication structure for an internal combustion engine includes a cylinder head having a cam bearing region, a plug hole for an ignition plug and a plug tube fitted liquid-tight therein. The cam bearing lubrication structure includes an outer periphery oil path bypassing along an outer peripheral face of the plug tube, a main lubricating oil passage extending through the plug hole and formed to connect to the outer periphery oil path and a guide passage formed in and through the cam bearing region to connect a sliding face of the cam bearing region from the outer periphery oil path and supplying lubricating oil to a sliding face of the cam bearing region and a camshaft. In addition, a lubricating oil supplying structure is provided for a valve apparatus for further increasing the oil supply amount to achieve a further increase in the speed of the engine.Type: ApplicationFiled: September 11, 2014Publication date: April 2, 2015Applicant: HONDA MOTOR CO., LTD.Inventor: Hiroyuki SUGIURA
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Publication number: 20150059667Abstract: An oil supply device includes a plurality of hollow cam shafts, cam shaft journals, and a shaft side path. The hollow cam shafts have through holes that pass in a longitudinal direction from interior to exterior thereof. The cam shaft journals are provided on every position at which the through holes are formed. Each of the cam shaft journals has a path connected with an associated through hole and is coupled with a cylinder head. The shaft side path is formed to supply oil into each hollow cam shaft after the oil sequentially passing from an oil pump through an associated cam shaft journal and an associated through hole.Type: ApplicationFiled: December 16, 2013Publication date: March 5, 2015Applicants: Kia Motors Corporation, Hyundai Motor CompanyInventors: Young Kyu Oh, Woo Tae Kim, Chul Ho Yu, Dong Hoon Seok, Dong Heon Park, II Joong Hwang
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Patent number: 8936002Abstract: A cylinder head of an internal combustion engine comprises a camshaft that is mounted in the axial direction via at least one rolling bearing, wherein the at least one rolling bearing may be formed such that all occurring axial forces may be absorbed via the at least one rolling bearing.Type: GrantFiled: April 29, 2011Date of Patent: January 20, 2015Assignee: Mahle International GmbHInventors: Thomas Flender, Michael Kreisig, Falk Schneider, Stefan Steichele
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Patent number: 8919321Abstract: An internal combustion engine for a vehicle, such as a motorcycle, includes a crankcase defining a sump, and a lubrication system scavenging oil from the crankcase and supplying oil to the crankshaft and to first and second cylinder heads. The lubrication system includes a pump with housing and rotor, the housing being fixed to the crankcase and the rotor being rotatable around a crankshaft axis and being rotated by the crankshaft. A plurality of oil supply passages extend through the crankcase, potentially including at least one being formed in the crankcase.Type: GrantFiled: February 28, 2014Date of Patent: December 30, 2014Assignee: S & S Cycle, Inc.Inventors: Geoffrey W. Burgess, Roy Meyer, Scott Sjovall, Jeffrey Bailey, Dan Kinsey
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Patent number: 8899271Abstract: A pressure accumulator includes a housing having a housing cavity, a piston axially displaceable in the housing cavity between a first final position and a second final position and having a pressure surface which together with a wall of the housing cavity delimits at least partially a reservoir connectable to an ICE consumer in a fluid-conveying manner, an energy store cooperating with the piston, the piston being displaceable against the force of the energy store from the first final position into the second final position in that the reservoir is acted on by pressure using a pressure medium, and a locking device for locking the piston in the second final position. A locking tube is connected to the piston and supported within the housing in an axially shiftable manner, and lockable at an end of the housing facing away from the reservoir with the aid of a locking pin.Type: GrantFiled: June 25, 2013Date of Patent: December 2, 2014Assignee: Schaeffler Technologies AG & Co. KGInventors: Michael Busse, Ali Bayrakdar
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Patent number: 8887678Abstract: There is provided a lubricating structure for an internal combustion engine which has a crankcase, a cylinder block, a cylinder head housing a valve driving device, and a cam housing provided on an upper portion of the cylinder head to support an intake-side camshaft and an exhaust-side camshaft, the lubricating structure including: a main oil passage formed in the cam housing; an oil passage formed in an outer wall upper portion of the cylinder head so as to communicate with the main oil passage; and a pipe connection portion formed so as to allow an external oil pipe to be connected to the oil passage from an outside.Type: GrantFiled: January 31, 2013Date of Patent: November 18, 2014Assignee: Suzuki Motor CorporationInventor: Hisashi Ozeki
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Patent number: 8851036Abstract: In an internal combustion engine comprising a plurality of cylinders with at least one cylinder head including inlet channels extending from an inlet flange surface to a cylinder inlet and outlet channels extending from a cylinder outlet to an opening in an outlet flange surface and an oil chamber provided in the cylinder head for supplying lubricant to an actuation device for gas exchange valves, the inlet flange and the outlet flange have flat surfaces which are arranged at an angle relatively to each other so that the surface planes intersect above the cylinder head and the cylinder head, as a result, has an essentially triangular cross-section.Type: GrantFiled: March 17, 2013Date of Patent: October 7, 2014Assignee: Daimler AGInventor: Jochen Haefner
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Publication number: 20140261268Abstract: In an internal combustion engine comprising a plurality of cylinders with at least one cylinder head including inlet channels extending from an inlet flange surface to a cylinder inlet and outlet channels extending from a cylinder outlet to an opening in an outlet flange surface and an oil chamber provided in the cylinder head for supplying lubricant to an actuation device for gas exchange valves, the inlet flange and the outlet flange have flat surfaces which are arranged at an angle relatively to each other so that the surface planes intersect above the cylinder head and the cylinder head, as a result, has an essentially triangular cross-section.Type: ApplicationFiled: March 17, 2013Publication date: September 18, 2014Inventor: Jochen Haefner
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Patent number: 8833320Abstract: An internal combustion engine, having a camshaft having at least one one-piece thrust plate, which is arranged and captively fixed between a drive element, and a function element, wherein the drive element and the function element are fixedly joined with the camshaft, wherein the thrust plate is in the cylinder crankcase and is an axial bearing plate and includes at least one of a wear reducing coating and a friction reducing coating, and wherein the thrust plate is guided at a radially outer edge in the cylinder crankcaseType: GrantFiled: October 12, 2010Date of Patent: September 16, 2014Assignee: Mahle International GmbHInventors: Thomas Flender, Michael Kreisig, Falk Schneider
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Patent number: 8800517Abstract: An engine includes a camshaft supported in a housing for rotation about an axis of rotation. A cam gear is attached to one end of the camshaft and includes a first thrust bearing surface. A thrust ring is attached to the cam gear and includes a second thrust bearing surface. A thrust ring retainer is attached to the housing with a plurality of bolts and includes a pair of thrust surfaces trapped between the first thrust bearing surface of the cam gear and a second thrust bearing surface of the thrust ring. The thrust ring retainer also defines a portion of a lubrication connection passage that facilitates pressure equalization among a plurality of lubrication galleries arranged in parallel adjacent the camshaft.Type: GrantFiled: December 1, 2010Date of Patent: August 12, 2014Assignee: Caterpillar Inc.Inventors: Travis Thomas Petry-Johnson, Philip Christopher Millward, Ryan Michael Heinbuch, Jonathan Chittenden
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Patent number: 8752518Abstract: A switchable device for supplying at least one consumer of an internal combustion engine with pressure.Type: GrantFiled: November 17, 2010Date of Patent: June 17, 2014Assignee: Schaeffler Technologies GmbH & Co. KGInventors: Mathias Boegershausen, Michael Busse, Eduard Golovatai-Schmidt, Andreas Strauss
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Publication number: 20140102394Abstract: Embodiments in accordance with the present disclosure may provide a camshaft having a central oil passage and a radial passage to supply oil from the central passage to a bearing surface. The camshaft may include a filter disposed within the central passage which may allow oil to pass through the radial passage to the bearing surface, and which may prevent particles larger than a predetermined size to pass to the bearing surface.Type: ApplicationFiled: October 17, 2012Publication date: April 17, 2014Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Peter Michael Oravetz, Ed Waszczenko
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Patent number: 8667940Abstract: An engine assembly includes an engine block, a cylinder head coupled to the engine block and first and second lubrication systems. The first lubrication system includes a first pump in communication with the engine block and providing a first fluid to the engine block. The second lubrication system is isolated from the first lubrication system and includes a second pump in communication with the cylinder head and providing a second fluid to the cylinder head.Type: GrantFiled: August 17, 2011Date of Patent: March 11, 2014Assignee: GM Global Technology Operations LLCInventors: Jason C. Melecosky, Timothy L. Neal
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Patent number: 8656877Abstract: A vehicle engine includes: a cylinder head; a cam housing fixed to a top of the cylinder head; a cam cap fixed to a top of the cam housing; a camshaft rotatably supported between the cam housing and the cam cap, the camshaft supporting a cam; a rocker arm configured to be pushed by the cam; and a valve configured to operate by being pushed by the rocker arm; and an oil pipe that is formed integrally with the cam cap. Lubricant oil is supplied through the oil pipe to a contact point between the cam and the rocker arm.Type: GrantFiled: October 12, 2010Date of Patent: February 25, 2014Assignee: Otics CorporationInventors: Naoki Hiramatsu, Masahide Sakurai
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Publication number: 20140048027Abstract: A pressure accumulator for a camshaft phaser of an internal combustion engine, including a housing that accommodates a piston and forms a cavity fillable with a hydraulic fluid. The cavity is configured as a hole and is closed by a cover on at least one side so as to be fluid-tight, whereby the cover is fastened to the housing by a flanged connection. A method for the production of a pressure accumulator for a camshaft phaser, including a pressure accumulator that forms a cavity, whereby a piston is placed into the cavity, and subsequently, a cover is put in place over the cavity—sealing it off towards the outside—in such a way that a material portion of the housing or of the cover creates such a positive connection between the cover and the housing that the cover is affixed in its position relative to the housing.Type: ApplicationFiled: February 24, 2012Publication date: February 20, 2014Applicant: Schaeffler Technologies AG & Co. KGInventors: Jens Hoppe, Ali Bayrakdar, Marco Meisborn
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Patent number: 8607748Abstract: In an engine equipped with a variable valvetrain including a second cam phase alteration mechanism 31 for altering the phase of second intake cams 12 actuating second intake valves, relative to a crankshaft, the second cam phase alteration mechanism 31 is arranged at an end opposite to an end at which a cam sprocket is provided to receive power from the crankshaft, to be located outside a cylinder head 2, and an actuator cover 40 is fixed to the cylinder head 2 to cover at least a lower portion of the second cam phase alteration mechanism 31.Type: GrantFiled: December 20, 2010Date of Patent: December 17, 2013Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Ayatoshi Matsunaga, Shinichi Murata, Daisuke Yoshika
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Patent number: 8567362Abstract: A vehicle engine includes a cylinder head, a cam housing fixed to a top of the cylinder head, a cam cap fixed to a top of the cam housing, a camshaft rotatably supported between the cam housing and the cam cap, the camshaft supporting a cam, a rocker arm configured to be pushed by the cam, and a valve configured to operate by being pushed by the rocker arm. The vehicle engine has an oil pipe that is formed integrally with the cam housing.Type: GrantFiled: October 4, 2010Date of Patent: October 29, 2013Assignee: Otics CorporationInventors: Naoki Hiramatsu, Masahide Sakurai
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Patent number: 8561582Abstract: A device for variably adjusting the valve timing of gas exchange valves of an internal combustion engine which has an input element, an output element and a camshaft. The input element can be brought in a driving connection with the crankshaft of the internal combustion engine. The output element is non-rotationally connected to the camshaft and swivelable in relation to the input element. An axial lateral face of the camshaft rests against an axial lateral face of the output element. A form-locking element on one of the axial lateral faces resting against each other aligns the output element on the camshaft with respect to its circumferential direction and engages in a mating form-locking element of the other component.Type: GrantFiled: June 10, 2009Date of Patent: October 22, 2013Assignee: Schaeffler Technologies AG & Co. KGInventor: Ahmet Deneri
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Patent number: 8511269Abstract: A cylinder head for an internal combustion engine includes a casting having a number of camshaft support bulkheads. Each of the support bulkheads has a portion of a parent bore bearing for mounting a camshaft. A bulkhead thrust surface is formed in an outer surface of at least one of the support bulkheads. A camshaft is rotatably mounted upon the support bulkheads. The camshaft has at least one thrust bearing member abutting a bulkhead thrust surface which is provided with lubricating oil by means of a radially extending, surface-piercing lubricant distribution channel formed in the bulkhead thrust surface, such that oil flowing in the parent bearing will be caused to be deposited upon the bulkhead thrust surface as well as upon the camshaft thrust surface.Type: GrantFiled: June 7, 2006Date of Patent: August 20, 2013Assignee: Ford Global TechnologiesInventors: Paul Reinhart, Raymond Puhl, John Pieprzak
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Patent number: 8505506Abstract: An oil pressure control apparatus includes a control valve mechanism being in communication with a pump via a first fluid passage and being in communication with a control apparatus via a second fluid passage, a third fluid passage diverging from the first fluid passage to supply oil to a predetermined portion other than the control apparatus, and a fluid passage dimension regulating mechanism including a movable member provided at the third fluid passage and including an opening for regulating a fluid passage dimension of the third fluid passage. The fluid passage dimension regulating mechanism is in communication with a fourth fluid passage diverging from the second fluid passage and biases the movable member to a side increasing the fluid passage dimension by applying the hydraulic pressure of the fourth fluid passage to the movable member separately from the hydraulic pressure of the third fluid passage.Type: GrantFiled: February 3, 2011Date of Patent: August 13, 2013Assignee: Aisin Seiki Kabushiki KaishaInventors: Eiji Miyachi, Yasuo Ozawa
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Publication number: 20130192554Abstract: There is provided a lubricating structure for an internal combustion engine which has a crankcase, a cylinder block, a cylinder head housing a valve driving device, and a cam housing provided on an upper portion of the cylinder head to support an intake-side camshaft and an exhaust-side camshaft, the lubricating structure including: a main oil passage formed in the cam housing; an oil passage formed in an outer wall upper portion of the cylinder head so as to communicate with the main oil passage; and a pipe connection portion formed so as to allow an external oil pipe to be connected to the oil passage from an outside.Type: ApplicationFiled: January 31, 2013Publication date: August 1, 2013Applicant: SUZUKI MOTOR CORPORATIONInventor: SUZUKI MOTOR CORPORATION
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Publication number: 20130180488Abstract: A valve train mechanism of an internal combustion engine including a cylinder head formed with an intake port and an exhaust port, and a camshaft including a valve for opening or closing the intake port and the exhaust port formed in the cylinder head of the engine, a cam mounted to the camshaft so as to be rotated together, and a rocker arm supported on a rocker shaft to be swingable, in which the valve is opened or closed by swinging the rocker arm by rotation of the cam. The rocker shaft is formed with an oil passage, inside the rocker shaft, extending in an axial direction and with an oil outlet communicating with the oil passage and extending in a radial direction of the rocker shaft.Type: ApplicationFiled: January 10, 2013Publication date: July 18, 2013Applicants: SUZUKI MOTOR CORPORATIONInventors: SUZUKI MOTOR CORPORATION, Kunio Arase, Shuichi Yokota, Toru Okamura, Daisuke Yoshimoto
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Patent number: 8485152Abstract: A switchable device for supplying at least one consumer of an internal combustion engine with pressure, comprising: a cavity formed inside a camshaft; a first displacement element arranged in the cavity having a first pressure surface which at least partially delimits a first accumulator chamber together with the wall of the cavity; a first energy accumulator which interacts with the first displacement element; a locking mechanism by which the first displacement element can be locked in the second end position; a switching mechanism which can be actuated by an actuator, having a switch element that can be brought into at least two switching positions; a second displacement element arranged in the cavity having a second pressure surface which at least partially delimits a second accumulator chamber together with the wall of the cavity; a second energy accumulator which interacts with the second displacement element; the first accumulator chamber and the second accumulator chamber communicating with each otherType: GrantFiled: November 17, 2010Date of Patent: July 16, 2013Assignee: Schaeffler Technologies AG & Co. KGInventors: Mathias Boegershausen, Michael Busse, Eduard Golovatai-Schmidt, Andreas Strauss
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Publication number: 20130160728Abstract: A four-stroke engine is provided to lubricate driving parts including a crankshaft and valve operating members while circulating oil, using pressure fluctuation in a crank chamber, the pressure fluctuation being caused by reciprocating motion of a piston. A cam driving parts move with rotation of the crankshaft; a driving chamber and a rocker chamber are connected to one another; the rocker chamber is connected to the crank chamber and a gas-liquid separator; the oil accumulated in a tank is sucked up into the crank chamber and circulated through each part of the four-stroke engine; the crank chamber and the driving chamber are connected to one another via a communicating passage and a return passage; and the crank chamber and the driving chamber connected to one another via the return passage communicate with one another only when the piston is located in a vicinity of the top dead center.Type: ApplicationFiled: November 29, 2012Publication date: June 27, 2013Inventors: Akihiro HARA, Toshiaki TANAKA, Tetsuya HASEGAWA
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Publication number: 20130133600Abstract: A camshaft support structure for an internal combustion engine includes a cylinder head, a camshaft, a plurality of bearings, an auxiliary machine drive cam, an auxiliary machine, and a pulsar plate. The plurality of bearings include a terminal bearing supporting the camshaft to be rotatable with respect to the cylinder head about a rotational axis. The auxiliary machine has a plunger provided to be moved forward and backward by the auxiliary machine drive cam. The pulsar plate projects from the camshaft in a radial direction of the camshaft and is provided on an opposite side of the auxiliary machine drive cam with respect to the terminal bearing. The pulsar plate has a second surface facing the terminal bearing in the axial direction. Each of the first surface and the second surface is provided to slidably contact the terminal bearing.Type: ApplicationFiled: November 14, 2012Publication date: May 30, 2013Applicant: HONDA MOTOR CO., LTD.Inventor: HONDA MOTOR CO., LTD.
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Patent number: 8307800Abstract: An engine assembly may include a cylinder head defining a first bearing surface supporting a camshaft, a bearing cap fixed to the cylinder head and a lubrication rail. The first bearing surface may have a first oil inlet extending therethrough. The camshaft may define an axial bore, a first radial passage and a second radial passage. The first radial passage may extend from the axial bore through an outer circumference of the camshaft and may be in communication with the first oil inlet. The second radial passage may extend from the axial bore through an outer circumference of the camshaft. The bearing cap may be fixed to the cylinder head and include a first oil outlet in communication with the second radial passage. The lubrication rail may include a second oil inlet in communication with the first oil outlet and a first lubrication supply passage aligned with a camshaft lobe.Type: GrantFiled: March 10, 2010Date of Patent: November 13, 2012Inventors: David R. Staley, James J. Mazzola, III, Alan W. Hayman, Joseph J. Moon
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Publication number: 20120240888Abstract: A switchable device for supplying at least one consumer of an internal combustion engine with pressure.Type: ApplicationFiled: November 17, 2010Publication date: September 27, 2012Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KGInventors: Mathias Boegershausen, Michael Busse, Eduard Golovatai-Schmidt, Andreas Strauss
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Patent number: 8166939Abstract: A method of forming a cylinder head may include machining an upper surface of a cam tower of the cylinder head to form a generally planar surface. An oil passage may be drilled in the upper surface to provide an oil feed. A bearing bore may be formed in the upper surface of the cam tower. The bearing bore may include a recess having first and second circumferential ends. The oil passage may intersect the first circumferential end.Type: GrantFiled: March 5, 2009Date of Patent: May 1, 2012Inventors: Jose Manuel Lopez-Crevillen, Robert J. Moran, Gregory J Tomkiewicz
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Patent number: 8132550Abstract: A needle roller bearing (21) as a roller bearing comprises an outer ring (22) formed by connecting a plurality of arc-shaped outer ring members in a circumferential direction, and a plurality of needle rollers (23) arranged along the inner diameter surface of the outer ring (22), and an oil groove (22i) extending in a circumferential direction so as to contain a position opposed to an opening (13e) of an oil path of a housing is formed in the outer diameter surface of the outer ring member.Type: GrantFiled: August 30, 2007Date of Patent: March 13, 2012Assignees: NTN Corporation, Honda Motor Co., Ltd.Inventors: Shinji Oishi, Akihiko Katayama, Yugo Yoshimura, Katsufumi Abe, Hiroki Tsuchiyama, Noriaki Fujii, Tomoya Fujimoto, Keiko Yoshida, Kiminori Komura, Kazuto Abe
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Patent number: 8127747Abstract: A lubrication apparatus of a fuel pump, which lubricates a tappet and a fuel pump drive cam of the fuel pump, may include a cylinder head having an oil gallery formed therein and a camshaft disposed therethrough, wherein the fuel pump is coupled to the cylinder head, and a penetrating passage penetrating the cylinder head and connected to the oil gallery to supply oil from the oil gallery to the inside of a fuel pump adaptor connected to the fuel pump.Type: GrantFiled: July 9, 2009Date of Patent: March 6, 2012Assignees: Hyundai Motor Company, Kia Motors CorporationInventor: Gil Hyun Ahn