US20220251980A1 - Lubrication mechanism - Google Patents

Lubrication mechanism Download PDF

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Publication number
US20220251980A1
US20220251980A1 US17/579,132 US202217579132A US2022251980A1 US 20220251980 A1 US20220251980 A1 US 20220251980A1 US 202217579132 A US202217579132 A US 202217579132A US 2022251980 A1 US2022251980 A1 US 2022251980A1
Authority
US
United States
Prior art keywords
oil
oil filter
lubricant
piston
lubrication mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US17/579,132
Other languages
English (en)
Inventor
Minoru Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Assigned to HONDA MOTOR CO., LTD. reassignment HONDA MOTOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAITO, MINORU
Publication of US20220251980A1 publication Critical patent/US20220251980A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/001—Arrangements, apparatus and methods for handling fluids used in outboard drives
    • B63H20/002—Arrangements, apparatus and methods for handling fluids used in outboard drives for handling lubrication liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F01M2001/105—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements
    • F01M2001/1092—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements comprising valves bypassing the filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F01M2011/031—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means

Definitions

  • the present invention relates to a lubrication mechanism.
  • an outboard motor comprises an engine and an oil filter that filters engine oil (e.g., Japanese Patent Laid-Open No. 11-107732).
  • an oil filter that filters engine oil
  • a horizontal direction is adopted.
  • residual oil in an oil passage and the oil filter flows out during replacement and maintenance of the oil filter.
  • eaves are installed under a mounting part of the oil filter, and a range of oil dripping is suppressed, to prevent oil from scattering around.
  • an object of the present invention is to provide a lubrication mechanism in which an oil filter can be replaced without outflow of oil to outside.
  • An aspect of the present invention provides a lubrication mechanism comprising a vertically disposed crank shaft, a laterally movable piston, a connecting rod connecting the crank shaft and the piston, a cylinder barrel housing the crank shaft and the piston, a crank case containing the crank shaft together with the cylinder barrel, a cylinder head forming a combustion chamber, the combustion chamber connecting to a piston movable part end face of the cylinder barrel, an oil filter, and an oil filter installation member in which the oil filter is vertically installed, wherein the oil filter installation member includes a lubricant detour structure.
  • the lubricant detour structure comprises a lubricant detour route formed in the oil filter installation member, and an oil relief valve installed in the lubricant detour route.
  • the lubricant detour route follows a route other than a filtered lubricant route of the oil filter to return lubricant to an engine.
  • the oil relief valve allows residual lubricant to reflow to the engine, when the oil filter is removed.
  • the oil relief valve comprises a cylindrical valve guide, a spring, and a piston part
  • the valve guide has an outer circumference formed with a spiral guide hole
  • the piston part includes a guide pin that fits into the guide hole, with movement of the piston part in an up-down direction, the guide pin moves through the guide hole, the valve guide rotates within a range of 90°
  • the valve guide has a lower end in which a communication hole opens, and the communication hole is disposed in a relief oil path.
  • the oil filter installation member has a flange shape with respect to the oil filter.
  • the flange shape is a shape surrounding the oil filter.
  • a further aspect of present invention provides an outboard motor comprising the lubrication mechanism according to any one of the above aspects.
  • a still further aspect of present invention provides a ship comprising the above outboard motor.
  • an oil filter can be replaced without outflow of oil to outside.
  • FIG. 1 is a starboard side view showing an entire outboard motor
  • FIG. 2 is a partially cross-sectional view of an upper part of the outboard motor seen from a starboard side;
  • FIG. 3 is a perspective view of an oil filter installation member
  • FIG. 4 is a cross-sectional view showing the oil filter installation member in a state where an oil filter is mounted
  • FIG. 5 is a cross-sectional view showing the oil filter installation member in a state where the oil filter is removed.
  • FIG. 6 is an exploded perspective view of an oil relief valve.
  • FIG. 1 is a side view of an outboard motor 10 on a starboard side.
  • FIG. 1 shows a main internal mechanism with a dashed line.
  • a direction of an arrow Fr indicates front, and a direction of an arrow Rr indicates rear.
  • the outboard motor 10 comprises an engine 11 in an upper part.
  • the engine 11 is covered with an upper engine cover 12 and a lower engine cover 13 .
  • the upper engine cover 12 is mounted on an upper end of the lower engine cover 13 with a rear hinge 27 and a front stopper 28 .
  • a stern bracket 16 is provided in front of the lower engine cover 13 .
  • the outboard motor 10 can be mounted on a hull with the stern bracket 16 .
  • An extension cover 14 is provided under the lower engine cover 13 , and a gear case 15 is provided under the extension cover 14 .
  • an intake silencer 17 is disposed in front of the engine 11 .
  • the intake silencer 17 introduces air (fresh air) into an engine intake port.
  • An electrical component 18 is disposed behind the intake silencer 17 .
  • the electrical component 18 performs ignition control of the engine 11 , control of a fuel injection device and the like.
  • FIG. 2 is a partially cross-sectional view of the upper part of the outboard motor 10 seen from a starboard side.
  • the engine 11 comprises a rear cylinder head cover 31 , a laterally connecting cylinder head 32 , a further laterally connecting cylinder block 33 , and a front crank case 34 .
  • the cylinder head 32 comprises a combustion chamber 35 .
  • the cylinder block 33 comprises a plurality of laterally oriented cylinder barrels 36 , and in each of the cylinder barrels 36 , a laterally oriented piston 37 is laterally (front-rear direction) slidably housed.
  • the piston 37 has a piston movable part end face being connected to the combustion chamber 35 .
  • a crank shaft 21 is rotatably connected to each piston 37 via a connecting rod 38 .
  • the crank shaft 21 is vertically disposed, and supported by a bearing 47 .
  • the crank shaft 21 is contained in the crank case 34 .
  • the crank shaft 21 has an upper end connected to a power generation mechanism 51 and a recoil starter 52 .
  • a flywheel 22 is mounted on a lower end of the crank shaft 21 .
  • the lower end of the crank shaft 21 is coupled to a drive shaft 23 .
  • the drive shaft 23 passes inside the lower engine cover 13 and the extension cover 14 , and is coupled to a power transmission mechanism 24 in the gear case 15 .
  • the power transmission mechanism 24 transmits power of the drive shaft 23 to a horizontal driven shaft 25 .
  • the driven shaft 25 protrudes rearward from the gear case 15 , and has a rear end to which a propeller 26 is secured.
  • a pair of dog clutches (not shown) are switched, to switch forward rotation and backward rotation of the propeller 26 , thereby obtaining propulsion for forward or backward movement.
  • the engine 11 comprises a vertically oriented cam shaft 53 .
  • the cam shaft 53 is supported by a bearing 54 of the cylinder head 32 .
  • the cam shaft 53 has a lower end connected to an oil pump 55 , and the oil pump 55 is operated with a rotational force of the cam shaft 53 .
  • the engine 11 comprises an intake valve 41 , an exhaust valve 42 , and an ignition plug 43 .
  • crank chamber 44 Inside the crank case 34 , a crank chamber 44 is formed. Under the crank chamber 44 , an oil pan 45 is disposed, and in such a structure, oil (engine lubricant) in the crank chamber 44 flows down into the oil pan 45 .
  • the engine 11 has a lower part in which a mount case 46 supporting the engine 11 is disposed.
  • a main gallery 56 of an oil passage is disposed in the vicinity of the cylinder block 33 .
  • An oil filter 57 is provided in a middle of the main gallery 56 .
  • oil in the oil pan 45 is pumped up from a strainer 58 via an oil path 61 with an oil pump 55 .
  • the oil pumped up passes from the oil pump 55 through an oil path 62 , and is filtered through the oil filter 57 .
  • the filtered oil branches and flows upward and downward via the main gallery 56 .
  • the oil in the main gallery 56 is supplied to the bearing 47 of the crank shaft 21 and the like.
  • the oil branching from the main gallery 56 to an oil branch path 63 is supplied via a spool valve 64 and an oil path 65 to the bearing 54 of the cam shaft 53 and the like.
  • FIG. 3 is a perspective view of an oil filter installation member 81 in which the oil filter 57 is installed.
  • FIG. 3 shows the oil filter 57 with an alternate long and short dash line.
  • the oil filter 57 is vertically mounted in an upper part of the oil filter installation member 81 .
  • the oil filter installation member 81 is mounted on a side surface of the crank case 34 , and has a lower part comprising an inlet oil path 82 and an outlet oil path 83 .
  • an oil flange 84 is provided in the upper part of the oil filter installation member 81 to temporarily store lubricant.
  • the oil flange 84 has a flange shape with respect to the oil filter 57 . This flange shape is a shape surrounding the oil filter 57 .
  • a filter plate 95 is fitted into the oil flange 84 ( FIGS. 4 and 5 ).
  • the filter plate 95 is a member formed in a tank-like shape covering an entire upper surface of the oil flange 84 .
  • the filter plate 95 has a bottom provided with through holes communicating with the inlet oil path 82 , the outlet oil path 83 , and an after-mentioned relief oil path 90 , respectively.
  • the oil filter 57 is mounted on the bottom of the filter plate 95 .
  • the inlet oil path 82 has one end that opens in the oil flange 84 , and the inlet oil path 82 has the other end communicating with the oil path 62 ( FIG. 1 ). Also, the outlet oil path 83 has one end that opens in the oil flange 84 , and the other end communicating with the main gallery 56 ( FIG. 1 ).
  • the oil filter installation member 81 comprises a filtered lubricant route to return, to the engine 11 , the lubricant filtered through the oil filter 57 .
  • This route is a route to circulate the oil pumped up with the oil pump 55 (see FIG. 1 ) from the inlet oil path 82 to the oil filter 57 as shown with an arrow X, to filter the oil through the oil filter 57 , and to return the oil from the outlet oil path 83 to the main gallery 56 (see FIG. 1 ) as shown with an arrow Y, during an operation of the engine 11 .
  • FIG. 4 is a cross-sectional view showing the oil filter installation member 81 in a state where the oil filter 57 is mounted.
  • FIG. 5 is a cross-sectional view showing the oil filter installation member 81 in a state where the oil filter 57 is removed.
  • the oil filter installation member 81 comprises the relief oil path 90 that can communicate with the outlet oil path 83 .
  • the relief oil path 90 has one end communicating with an oil relief valve 85 , and the other end communicating with the oil pan 45 (see FIG. 2 ) on a lower side of the crank case 34 .
  • the oil relief valve 85 is provided in the relief oil path 90 .
  • the oil filter installation member 81 comprises a lubricant detour route that follows a route other than the filtered lubricant route, to return the lubricant to the engine 11 .
  • the lubricant detour route functions, when the engine 11 is stopped, and the oil filter 57 is removed as shown in FIG. 5 .
  • This route is a route to return residual lubricant in the oil filter installation member 81 through the relief oil path 90 to the engine 11 as shown with an arrow Z.
  • the lubricant detour route forms a lubricant detour structure, and the detour structure comprises the oil relief valve 85 .
  • FIG. 6 is an exploded perspective view of the oil relief valve 85 .
  • the oil relief valve 85 comprises a cylindrical valve guide 86 , a spring seat 87 , a spring 88 , and a piston part 89 .
  • the piston part 89 comprises a guide pin 91 , and is stored in an upper part of the valve guide 86 .
  • the valve guide 86 has an outer circumference formed with a spiral guide hole 92 , and the guide pin 91 fits into the guide hole 92 . As shown in FIGS. 4 and 5 , when the piston part 89 moves in an up-down direction, the guide pin 91 moves through the guide hole 92 , and the valve guide 86 rotates within a range of 90°.
  • the valve guide 86 has a lower end in which a communication hole 93 opens, and the communication hole 93 is disposed in the relief oil path 90 as shown in FIGS. 4 and 5 .
  • the oil filter 57 is mounted on the filter plate 95 , and the filter plate 95 moves the piston part 89 downward against an urging force of the spring 88 .
  • the communication hole 93 in a tip of the valve guide 86 is orthogonal to the relief oil path 90 , and the communication hole 93 is blocked.
  • the oil filter 57 needs to be periodically replaced.
  • the oil in the oil pan 45 is pumped up with the oil pump 55 , is filtered through the oil filter 57 , and flows upward and downward via the vertically oriented main gallery 56 .
  • the oil pump 55 is also stopped, but oil remains in the main gallery 56 .
  • the oil remaining in the main gallery 56 flows out.
  • the oil filter installation member 81 includes the oil flange 84 that stores lubricant, and hence the oil flowing out during the replacement of the oil filter 57 is temporarily collected in the oil flange 84 .
  • a new oil filter 57 is vertically mounted in the upper part of the oil filter installation member 81 .
  • the piston part 89 is pushed by the oil filter 57 to move downward, the valve guide 86 rotates by 90° in reverse, and the communication hole 93 is blocked.
  • the communication hole 93 to the crank case 34 is blocked, and the engine 11 is in an operable state.
  • the engine according to the present invention is applied to the vertical engine 11 in the embodiment, but may be applied also to a so-called transverse engine.
  • Any engine including the oil filter 57 mounted at a middle position of the oil passage can be applied, for example, to an engine for a riding lawn mower, tractor or the like.
  • the oil relief valve includes a configuration that is not limited to the configuration shown in FIG. 6 . There are not any special restrictions on the oil relief valve, as long as the valve allows the relief oil path 90 to open in such a manner that the residual lubricant can reflow to the engine 11 , when the oil filter 57 is removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filtration Of Liquid (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Mechanically-Actuated Valves (AREA)
US17/579,132 2021-02-05 2022-01-19 Lubrication mechanism Abandoned US20220251980A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021017656A JP2022120633A (ja) 2021-02-05 2021-02-05 潤滑機構
JP2021-017656 2021-02-05

Publications (1)

Publication Number Publication Date
US20220251980A1 true US20220251980A1 (en) 2022-08-11

Family

ID=82704460

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/579,132 Abandoned US20220251980A1 (en) 2021-02-05 2022-01-19 Lubrication mechanism

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US (1) US20220251980A1 (ja)
JP (1) JP2022120633A (ja)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6027098A (en) * 1994-03-10 2000-02-22 Nevrekar; Venkatesh R. Rotary valve
US6960296B2 (en) * 2002-02-12 2005-11-01 Hitachi, Ltd. Oil filter unit with drain valve device
US20090078629A1 (en) * 2005-02-24 2009-03-26 Xaver Stemmer Exchangeable Oil Filter With Spring-Operated Pin For Drainage
US8376795B2 (en) * 2009-04-15 2013-02-19 Honda Motor Co., Ltd. Engine for outboard motor
US20170107874A1 (en) * 2015-10-20 2017-04-20 Suzuki Motor Corporation Four-cycle ohv engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS632086Y2 (ja) * 1981-01-27 1988-01-20
JP3284941B2 (ja) * 1997-09-30 2002-05-27 トヨタ自動車株式会社 オイルフィルタの洩れ油拡散防止装置
JP3853092B2 (ja) * 1998-10-08 2006-12-06 日野自動車株式会社 液体フィルタ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6027098A (en) * 1994-03-10 2000-02-22 Nevrekar; Venkatesh R. Rotary valve
US6960296B2 (en) * 2002-02-12 2005-11-01 Hitachi, Ltd. Oil filter unit with drain valve device
US20090078629A1 (en) * 2005-02-24 2009-03-26 Xaver Stemmer Exchangeable Oil Filter With Spring-Operated Pin For Drainage
US8376795B2 (en) * 2009-04-15 2013-02-19 Honda Motor Co., Ltd. Engine for outboard motor
US20170107874A1 (en) * 2015-10-20 2017-04-20 Suzuki Motor Corporation Four-cycle ohv engine

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JP2022120633A (ja) 2022-08-18

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Owner name: HONDA MOTOR CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SAITO, MINORU;REEL/FRAME:058698/0986

Effective date: 20211217

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