WO2005005793A1 - エンジン - Google Patents
エンジン Download PDFInfo
- Publication number
- WO2005005793A1 WO2005005793A1 PCT/JP2004/009898 JP2004009898W WO2005005793A1 WO 2005005793 A1 WO2005005793 A1 WO 2005005793A1 JP 2004009898 W JP2004009898 W JP 2004009898W WO 2005005793 A1 WO2005005793 A1 WO 2005005793A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- breather
- decompression
- rotating
- fixed
- engine
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/08—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio
-
- 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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
-
- 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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
-
- 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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/045—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil using compression or decompression of the gas
Definitions
- the present invention relates to an engine provided with a breather device and a decompression device.
- engines used in vehicles and the like are provided with a camshaft on the cylinder head side for opening and closing an air valve and an exhaust valve.
- a decompression device that opens the intake valve side or exhaust valve side to release the pressure in the combustion chamber when compressing the interior of the chamber, thereby preventing resistance during compression, and a breather device that separates oil and gas (See, for example, Japanese Patent Application Laid-Open No. H04-2968617 and Japanese Patent Application Laid-Open No. H05-156917).
- a decombing device is provided inside a cam chain sprocket provided on a camshaft, and a breather device is provided outside the sprocket.
- a breather device is provided outside the sprocket.
- the present invention has been made in view of the above points, and has an object to provide an engine capable of reducing the space for disposing a decompression device or a breather device.
- a rotating member to which driving force from a crankshaft is transmitted is fixed to a camshaft, and a rotating portion of a breather device is provided outside the rotating member.
- the breather rotor is fixed, and the breather rotor is It has a cylindrical annular portion, and a decompression device is arranged inside the annular portion.
- the decompression device has a rotating portion, and the rotating portion is disposed inside the annular portion.
- one end of a decompression cam is connected to the rotating portion, and the other end of the decompression cam is extended to an exhaust cam portion side.
- an outermost portion in a cam axis direction is located closer to the rotating member than a tip in a cam axis direction of an annular portion of the breather rotating body.
- an impeller shaft of a water pump device is detachably fitted to an end of the camshaft on the breather device side, and the water pump device is disposed adjacent to the outside of the breather device.
- the breather device has a breather fixed body which is a fixed portion arranged to face the breather rotating body, and the breather fixed body includes the breather device side and the water. It is preferable that the impeller shaft is fixed to a partition partitioning from the pump device side, and the impeller shaft is fitted to the partition wall to prevent the impeller shaft from coming off.
- the breather device has a breather fixed body that is a fixed portion arranged to face the breather rotating body, and the purifier fixed body includes the pre-zer device side and the water pump device. It is preferable that the partition is fixed to a partition partitioning the side, an opening is formed in the partition, and the gas separated by the breather device passes through the opening to the air cleaner side.
- FIG. 1 is a schematic sectional view of a cylinder head of an engine according to an embodiment of the present invention.
- FIG. 2 is a side view showing a decompression device, a cam chain, and the like of the engine according to the embodiment.
- FIG. 3 is a side view showing a rotating portion and the like of the decombing device according to the embodiment.
- FIG. 4 is an exploded perspective view showing a rotating portion and the like of the decombing device according to the embodiment.
- FIG. 5 is an exploded perspective view showing a cam shaft ⁇ connection member and the like according to the embodiment.
- FIG. 6 is a perspective view showing movements of an opener arm, an exhaust valve, and the like, showing an operation state of the decompression device according to the embodiment.
- FIG. 7 is an explanatory diagram showing the movement of the decompression cam according to the embodiment.
- 11 is an engine
- 16 is a cylinder head
- 18 is a breather device
- 19 is a decompression device
- 20 is a water pump device
- 22 is a camshaft
- 23 is a cam chain
- 2 is a cam chain.
- 4 is an intake valve
- 25 is an exhaust valve
- 31 is a rocker arm
- 32 is a sprocket (rotating member)
- 33 is a breather rotating body
- 42 is a rotating part
- 43 is a proximal end part
- 4 is a tip side part
- 47 is a decompression cam
- 47a is a pressed pin
- 47b is a cam body
- 47c is a decompression cam part.
- Reference numeral 11 in FIG. 1 denotes a single-cylinder 4-cycle, 4-valve engine arranged on a motorcycle as a saddle-ride type vehicle.
- the engine 11 includes a cylinder head 16.
- the cylinder head 16 is fixed above a cylinder block (not shown), and a breather device 18, a decompression device 19, and a water pump device 20 are arranged on the cylinder head 16.
- a camshaft 22 is rotatably disposed on the cylinder head 16, and the camshaft 22 is connected to a crankshaft (not shown) via a cam chain 23 as a winding transmission band.
- the camshaft 22 is rotated via the cam chain 23 by rotating the crankshaft.
- the intake and exhaust valves 2 4, 25 are configured to be opened and closed at a predetermined timing.
- the connecting member 27 is fixed to the camshaft main body 26 by the port 28, and the camshaft 22 is turned between the camshaft main body 26 and the connecting member 27, as shown in FIG.
- the stop member 29 is fitted so that both are integrally rotated.
- the camshaft body 26 is formed with an intake cam portion 26a and an exhaust cam portion 26b, and the rocker arms 30 and 31 slide on the cam portions 26a and 26b. Thus, the valves 24 and 25 are opened and closed via the rocker arms 30 and 31.
- a sprocket 32 as a rotating member around which the cam chain 23 is hung is fixed to the connecting member 27 of the camshaft 22, and the breather device is provided outside the sprocket 32.
- the breather rotator 33 of 18 is fixed, and the breather rotator 33 rotates with the rotation of the sprocket 32.
- a substantially cylindrical annular portion 33a is formed to protrude from the rotating body 33, and a breather fixing body 34 is disposed outside the rotating body 33.
- the distal end of the annular portion 34a of the fixed stator 34 is inserted inside the distal end of the annular portion 33a of the rotating body 33, and both annular portions 33a and 34.
- the tips of “a” are arranged so as to overlap each other, and a gap C is formed between the annular portion 33a and the annular portion 34a.
- the breather fixed body 34 is fixed to a partition wall 36 that separates the breather device 18 side and the water pump device 20 side.
- the partition wall 36 has a fitting groove 50 c for the impeller shaft 50. Are fitted and retained.
- the partition wall 36 is attached to the water pump housing 41 together with the breather fixing body 34, and is sub-assembled in the water pump device 20. Further, openings 36 a are formed at a plurality of places in the partition wall 36, and the gas separated by the breather device 18 flows through these openings 36 a into the gas chamber 3 on the water pump device 20 side. 7. It is configured to pass through to the air cleaner side, not shown. Here, the operation of the breather device 18 will be described.
- the gas-liquid mixture When the gas-liquid mixture passes through the gap C, the gas-liquid mixture expands when flowing into the breather device 18 from the gap C, and the liquid of the gas-liquid mixture is separated from the gas, and the liquid is separated. Since the rotating body 33 is rotating, the centrifugal force causes the rotating body 33 to adhere to the inner wall surface of the rotating body 33. The adhering liquid flows down through the gap C to the outside, further flows down the inner wall 39 of the chain chamber 38, and returns to the oil pan (not shown) (not shown).
- the gas separated in the breather device 18 further flows into the gas chamber 37 on the water pump device 20 side through the opening 36a of the partition wall 36 as shown by an arrow b. go. Since the gas is further expanded in the gas chamber 37, gas-liquid separation is performed again, and the liquid accumulates on the bottom wall, and as shown by the arrow c, through the discharge hole 53. Then, it flows downward along the inner wall 39 of the chain chamber 38 and returns to the oil tank (not shown).
- the gas further separated in the gas chamber 37 flows from the inside of the gas chamber 37 to the air cleaner side as shown by an arrow d in FIG.
- the decompression device 19 is arranged in the breather device 18 for separating gas and liquid.
- the decompression device 19 releases the pressure by slightly opening the exhaust valve 25 during the compression stroke, and is disposed inside the pre-rotor 33 of the pre-device 18. .
- the decompression device 19 is configured such that a base end portion 43 constituting a part of the rotating portion 42 rotates on a sprocket 32 via a rotating shaft 45. It is provided freely and is urged clockwise in FIG. 3 by a spring 46.
- a rotating portion 42 is formed on the proximal end portion 43 by fixing the distal end portion 44 to the distal end side.
- a pair of operating pins 44 a is protruded from the tip of the tip side portion 44.
- the outermost portion (tip side portion 4 4) along the cam axis direction has a sprocket 3 2 side from the tip along the cam axis direction of the annular portion 33 a of the breather rotor 33. (Inside).
- a pressed pin 47a (one end) of the decompression cam 47 is inserted and connected between the operating pins 44a, 44a.
- the decompression cam 47 has a cam body 47 b having a columnar shape.
- the pressed pin 47 a projects from the cam body 47 b, and the cam body 47 b has a cylindrical shape.
- a semicircular decombing cam portion 47c is formed at the tip of b.
- the cam body 4 7 b of the decompression cam 47 is inserted into the through-hole 27 a of the connecting member 27, and is inserted into the insertion hole 26 c of the exhaust cam portion 26 b of the camshaft body 26. Have been.
- the decompression cam portion 47c (the other end) having a semicircular cross section protrudes from the surface of the exhaust cam portion 26b '. Also, it is configured to be immersed from the surface.
- the decompression cam portion 47c projects from the surface of the exhaust cam portion 26b, and as shown in FIG.
- the exhaust valve 25 is pressed by the pressing portion 31 b of the exhaust rocker arm 31, and the valve 25 is slightly moved. It is open.
- the timing when the exhaust valve 25 is slightly opened is a compression stroke, and the gas in the combustion chamber 48 is discharged to the outside, thereby suppressing the pressure increase in the combustion chamber 48.
- one end 50 a of the impeller shaft 50 is connected to the bolt 28, and the other end 50 b of the impeller shaft 50 has a pump chamber 51.
- the impeller 52 housed in the area is arranged.
- a pump-side cooling water passage extending from the pump chamber 51 is directly connected to a head-side cooling water passage formed in the cylinder head 16.
- cooling water is sucked into the pump chamber 51 from the radiator side, and is transferred from the pump chamber 51 to the cylinder head 16 via the pump-side cooling water passage. It is configured to be supplied to the pad side cooling water passage.
- the camshaft is formed by disposing the rotating part 42 of the decompression device 19 inside the annular portion 33 a of the breather rotating body 33 of the breather device 18. 22
- the axial width of 2 can be reduced as much as possible. As a result, the installation space for the decompression device 19 and the breather device 18 can be made compact. '
- oil is separated in the breather device 18 and the oil adheres to the inner wall of the annular portion 33a, and adheres to the decombing device 19 in the annular portion 33a. 9 can improve the lubricity.
- the concave-convex decomposing device 19 rotates in the breather device 18, the gas-liquid separation function can be improved.
- the decompression device 19 is disposed in the annular portion 33 a of the breather rotor 33, before the spring 46 is disposed, the rotation portion 42 of the decompression device 19 becomes By contacting the annular portion 33a, the annular portion 33a can function as a stopper of the rotating portion 42.
- the decompression device 19 has one end of the decompression cam 47 (pressed)
- the pressure pin 47 a) is connected, and the other end of the decompression cam 47 (decompression cam 47 c) is extended to the exhaust cam 26 b side.
- the driving force from the rotating part 42 of the device 19 can be reliably transmitted to the exhaust cam part 26 b via the decombing cam 47.
- the decompression device 19 is located at the outermost portion in the cam shaft direction (tip side portion 4 4) 1 The sprocket 3 2 side (inside) from the tip in the cam shaft direction of the annular portion 3 3 a of the presser rotor 3 3 a. Therefore, since the decompression device 19 is completely housed in the breather rotating body 33, especially in a state before the decompression device 19 is attached to the sprocket 32, the breather rotating body Storage and mounting work can be performed while the decompression device 19 is accommodated in 33, and the decompression device 19 can be protected. .
- the impeller shaft 50 of the water pump device 20 is removably fitted to the end of the camshaft 22 on the side of the breather device 18, and the water pump device 20 is attached to the outside of the prezer device 18. Therefore, even when the water pump device 20 is provided outside the breather device 18, the axial width of the camshaft 22 can be reduced as much as possible.
- the breather fixing body 34 of the breather device 18 is fixed to a partition wall 36 that separates the breather device 18 side and the water pump device 20 side, and the impeller shaft 50 is fitted to the partition wall 36.
- the impeller shaft 50 can be efficiently prevented from falling off by the partition wall 36 to which the breather fixing body 34 of the presser device 18 is fixed.
- the present invention is applied to the engine 11 for a motorcycle.
- the type of engine is not limited to a single-cylinder, four-valve type, but may be another type.
- the sprocket 32 is used as the “rotating member”, the present invention is not limited to this, and a pulley may be used instead of the sprocket 32, and a belt may be used instead of the cam chain 23.
- a gear may be used instead of the sprocket 32, and the driving force from the crankshaft may be transmitted using a plurality of gears.
- the width of the camshaft in the axial direction can be reduced as much as possible by disposing the decompression device inside the annular portion of the presser rotating body of the breather device. And installation space for the breather unit can be compact.
- the oil is separated in the breather device, and the oil adheres to the inner wall of the annular portion, and adheres to the decompression device in the annular portion, so that the lubricating property of the decompression device can be improved.
- the concave / convex decompression device rotates in the breather device, the gas-liquid separation function can be improved.
- one end of the decompression cam is connected to the rotating portion, and the other end of the decompression cam is extended to the exhaust cam portion side, thereby rotating the decompression device in the preserver device.
- the driving force from the section can be reliably transmitted to the exhaust cam section via the decompression cam.
- the decombing device since the outermost part in the camshaft direction of the decompression device is located closer to the rotating member than the tip in the camshaft direction of the annular portion of the breather rotating body, the decombing device is completely housed in the breather rotating body. In particular, before the decombing device is attached to the rotating member, the decompression device is placed in the rotating body of the breather. W Storage, installation work, etc. can be performed with the equipment stored, and the decompression equipment can be protected.
- the impeller shaft of the water pump device is detachably fitted to the end of the camshaft on the breather device side, and the water pump device is disposed adjacent to the outside of the breather device so as to form a bridge. Even when the water pump device is provided outside the device, the axial width of the camshaft can be reduced as much as possible.
- the breather fixing body of the breather device is fixed to a partition that separates the breather device side and the water pump device side, and the impeller shaft is fitted to the partition to prevent the breather device from falling off. With the partition fixed, the impeller shaft can be efficiently prevented from coming off.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04747366A EP1655460B1 (en) | 2003-07-10 | 2004-07-06 | Engine |
ES04747366T ES2402686T3 (es) | 2003-07-10 | 2004-07-06 | Motor |
JP2005511556A JP4197522B2 (ja) | 2003-07-10 | 2004-07-06 | エンジン |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-195210 | 2003-07-10 | ||
JP2003195210 | 2003-07-10 | ||
JP2004080057 | 2004-03-19 | ||
JP2004-080057 | 2004-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005005793A1 true WO2005005793A1 (ja) | 2005-01-20 |
Family
ID=34067332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/009898 WO2005005793A1 (ja) | 2003-07-10 | 2004-07-06 | エンジン |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1655460B1 (ja) |
JP (1) | JP4197522B2 (ja) |
ES (1) | ES2402686T3 (ja) |
WO (1) | WO2005005793A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008064083A (ja) * | 2006-08-08 | 2008-03-21 | Honda Motor Co Ltd | デコンプ装置を備えたエンジン |
JP2008082281A (ja) * | 2006-09-28 | 2008-04-10 | Honda Motor Co Ltd | デコンプ装置付きカム機構 |
US7958875B2 (en) | 2007-03-30 | 2011-06-14 | Honda Motor Co., Ltd. | Internal combustion engine with breather system |
JP2012077711A (ja) * | 2010-10-05 | 2012-04-19 | Suzuki Motor Corp | エンジンのデコンプ装置 |
US20180010496A1 (en) * | 2016-07-06 | 2018-01-11 | Neanders Motors AG | Oil Separator for an Internal Combustion Engine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02139306U (ja) * | 1989-04-25 | 1990-11-21 | ||
JPH04153514A (ja) * | 1990-10-17 | 1992-05-27 | Toyota Autom Loom Works Ltd | ブローバイガスのオイル分離装置 |
JPH04191408A (ja) * | 1990-11-22 | 1992-07-09 | Suzuki Motor Corp | 四サイクルエンジンのオートデコンプ装置 |
JP2002004828A (ja) * | 2000-06-19 | 2002-01-09 | Honda Motor Co Ltd | エンジンにおけるブリーザ構造 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3042635B2 (ja) * | 1991-01-22 | 2000-05-15 | ヤマハ発動機株式会社 | 自動二輪車のブリーザ装置 |
JPH04298617A (ja) * | 1991-03-27 | 1992-10-22 | Suzuki Motor Corp | エンジンのデコンプ装置 |
AU2001290604A1 (en) * | 2000-09-01 | 2002-03-13 | Bombardier Inc. | Continuously variable transmission for an internal combustion engine |
DE10128465A1 (de) * | 2001-06-12 | 2003-01-02 | Mtu Friedrichshafen Gmbh | Ölseparator zur Kurbelgehäuse-Entlüftung |
-
2004
- 2004-07-06 EP EP04747366A patent/EP1655460B1/en active Active
- 2004-07-06 ES ES04747366T patent/ES2402686T3/es active Active
- 2004-07-06 WO PCT/JP2004/009898 patent/WO2005005793A1/ja active Application Filing
- 2004-07-06 JP JP2005511556A patent/JP4197522B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02139306U (ja) * | 1989-04-25 | 1990-11-21 | ||
JPH04153514A (ja) * | 1990-10-17 | 1992-05-27 | Toyota Autom Loom Works Ltd | ブローバイガスのオイル分離装置 |
JPH04191408A (ja) * | 1990-11-22 | 1992-07-09 | Suzuki Motor Corp | 四サイクルエンジンのオートデコンプ装置 |
JP2002004828A (ja) * | 2000-06-19 | 2002-01-09 | Honda Motor Co Ltd | エンジンにおけるブリーザ構造 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008064083A (ja) * | 2006-08-08 | 2008-03-21 | Honda Motor Co Ltd | デコンプ装置を備えたエンジン |
JP2008082281A (ja) * | 2006-09-28 | 2008-04-10 | Honda Motor Co Ltd | デコンプ装置付きカム機構 |
JP4536697B2 (ja) * | 2006-09-28 | 2010-09-01 | 本田技研工業株式会社 | デコンプ装置付きカム機構 |
US7958875B2 (en) | 2007-03-30 | 2011-06-14 | Honda Motor Co., Ltd. | Internal combustion engine with breather system |
JP2012077711A (ja) * | 2010-10-05 | 2012-04-19 | Suzuki Motor Corp | エンジンのデコンプ装置 |
US20180010496A1 (en) * | 2016-07-06 | 2018-01-11 | Neanders Motors AG | Oil Separator for an Internal Combustion Engine |
US10494968B2 (en) * | 2016-07-06 | 2019-12-03 | Neanders Motors AG | Oil separator for an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
EP1655460A1 (en) | 2006-05-10 |
JPWO2005005793A1 (ja) | 2006-08-24 |
ES2402686T3 (es) | 2013-05-07 |
JP4197522B2 (ja) | 2008-12-17 |
EP1655460B1 (en) | 2013-03-27 |
EP1655460A4 (en) | 2010-12-08 |
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