TWI596271B - Engine - Google Patents
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- Publication number
- TWI596271B TWI596271B TW102137371A TW102137371A TWI596271B TW I596271 B TWI596271 B TW I596271B TW 102137371 A TW102137371 A TW 102137371A TW 102137371 A TW102137371 A TW 102137371A TW I596271 B TWI596271 B TW I596271B
- Authority
- TW
- Taiwan
- Prior art keywords
- cylinder
- cam
- head
- actuator
- rocker arm
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002826 coolant Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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- 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
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
- F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
-
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
- F01L2001/0535—Single overhead camshafts [SOHC]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve Device For Special Equipments (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
本發明係關於一種引擎。 The present invention relates to an engine.
可藉由利用致動器直接推壓將複數個搖臂連結之銷構件,而切換搖臂之連結及非連結之可變閥動機構(valve gear)為已知。例如於日本公開專利公報2012-77741號中所記載之引擎中,於氣缸頭與頭蓋之結合面配置有致動器之驅動軸。致動器安裝於氣缸頭及頭蓋。又,由致動器驅動而推壓銷構件之桿係以貫通氣缸頭之方式配置,且支撐於氣缸頭。 It is known to switch the connecting and non-joining variable valve arms of the rocker arm by directly pressing the pin members that connect the plurality of rocker arms with the actuator. For example, in the engine described in Japanese Laid-Open Patent Publication No. 2012-77741, the drive shaft of the actuator is disposed on the joint surface between the cylinder head and the head cover. The actuator is mounted to the cylinder head and the head cover. Further, the rod that is driven by the actuator to push the pin member is disposed to penetrate the cylinder head and is supported by the cylinder head.
於上述之引擎中,藉由採用利用致動器直接推壓銷構件之構造,而以簡單之機構實現可變閥動機構。又,由於藉由致動器而移動之構件較少且較小,故而對致動器所要求之驅動力可較小。因此,可使致動器小型化。藉此,即便於凸輪軸之軸線方向上之引擎之側面安裝致動器,亦可抑制引擎大型化。 In the above-described engine, the variable valve mechanism is realized by a simple mechanism by adopting a configuration in which the pin member is directly pushed by the actuator. Moreover, since the member moved by the actuator is small and small, the driving force required for the actuator can be small. Therefore, the actuator can be miniaturized. Thereby, even if the actuator is attached to the side surface of the engine in the axial direction of the camshaft, the size of the engine can be suppressed.
又,於上述之引擎中,無需用以將致動器之動作傳遞至銷構件之複雜之機構。因此,可於凸輪軸之軸線方向將致動器配置於靠近銷構件之位置。進而,致動器係配置於相對於凸輪軸與凸輪鏈條為相反之側。因此,與將致動器配置於與凸輪鏈條相同之側之情形相比,可 將致動器配置於靠近銷構件之位置。如此,藉由將致動器配置於靠近銷構件之位置,可縮短桿之長度。若桿之長度變短,則用以驅動桿之驅動力變小,故而可使致動器小型化。 Moreover, in the above-described engine, a complicated mechanism for transmitting the action of the actuator to the pin member is not required. Therefore, the actuator can be disposed at a position close to the pin member in the axial direction of the cam shaft. Further, the actuator is disposed on the opposite side of the cam shaft from the cam chain. Therefore, compared with the case where the actuator is disposed on the same side as the cam chain, The actuator is placed close to the pin member. Thus, by arranging the actuator at a position close to the pin member, the length of the rod can be shortened. When the length of the rod is shortened, the driving force for driving the rod becomes small, so that the actuator can be miniaturized.
但是,若將致動器配置於靠近銷構件之位置,則致動器被配置於靠近燃燒室之位置。此情形時,擔心來自燃燒室之熱對致動器造成之影響。於上述之引擎中,於包括氣缸頭及氣缸外殼之引擎本體之側壁介隔安裝板而安裝有致動器,藉此可減少來自燃燒室之熱之影響。然而,由於在氣缸頭及頭蓋介隔安裝板安裝致動器,故而有引擎大型化之問題。 However, if the actuator is disposed at a position close to the pin member, the actuator is disposed at a position close to the combustion chamber. In this case, there is concern about the influence of heat from the combustion chamber on the actuator. In the above engine, an actuator is mounted on the side wall of the engine body including the cylinder head and the cylinder casing, and the influence of heat from the combustion chamber can be reduced. However, since the actuator is mounted on the cylinder head and the head cover via the mounting plate, there is a problem that the engine is enlarged.
本發明之課題在於抑制來自燃燒室之熱對致動器造成之影響,且使搭載有可變閥動機構之引擎小型化。 An object of the present invention is to suppress the influence of heat from a combustion chamber on an actuator and to downsize an engine on which a variable valve mechanism is mounted.
本發明之一態樣之引擎為單氣缸引擎,且其包括氣缸體、氣缸頭、頭蓋、凸輪鏈條、凸輪軸、搖動軸、第1搖臂、第2搖臂、切換銷構件及致動器。 An engine of one aspect of the present invention is a single cylinder engine, and includes a cylinder block, a cylinder head, a head cover, a cam chain, a cam shaft, a rocking shaft, a first rocker arm, a second rocker arm, a switching pin member, and an actuator .
氣缸頭包括燃燒室、及相對於燃燒室配置於與氣缸體之氣缸軸線垂直之方向之凸輪鏈條室。氣缸頭安裝於氣缸體。頭蓋安裝於氣缸頭。凸輪鏈條配置於凸輪鏈條室。凸輪軸連結有凸輪鏈條,且支撐於氣缸頭。搖動軸支撐於氣缸頭且與凸輪軸平行。第1搖臂支撐於搖動軸。第2搖臂支撐於搖動軸,且於凸輪軸之軸線方向與第1搖臂並排配置。 The cylinder head includes a combustion chamber and a cam chain chamber disposed in a direction perpendicular to a cylinder axis of the cylinder block with respect to the combustion chamber. The cylinder head is mounted to the cylinder block. The head cover is mounted to the cylinder head. The cam chain is disposed in the cam chain chamber. The cam shaft is coupled to the cam chain and supported by the cylinder head. The rocking shaft is supported on the cylinder head and is parallel to the camshaft. The first rocker arm is supported on the rocking shaft. The second rocker arm is supported by the rocking shaft and arranged in parallel with the first rocker arm in the axial direction of the camshaft.
切換銷構件可於凸輪軸之軸線方向移動,且設置為可移動至第1位置及第2位置。切換銷構件於第1位置將第1搖臂與第2搖臂連結,且與第1搖臂及第2搖臂一起擺動。切換銷構件於第2位置使第1搖臂與第2搖臂為非連結。 The switching pin member is movable in the axial direction of the cam shaft and is provided to be movable to the first position and the second position. The switching pin member connects the first rocker arm and the second rocker arm at the first position, and swings together with the first rocker arm and the second rocker arm. The switching pin member disconnects the first rocker arm from the second rocker arm at the second position.
致動器係沿凸輪軸之軸線方向推壓切換銷構件,將切換銷構件 之位置切換為第1位置及第2位置。於自凸輪軸之軸線方向觀察時,切換銷構件之至少一部分與頭蓋重疊。致動器於凸輪軸之軸線方向,配置於相對於凸輪軸與凸輪鏈條室為相反之側。致動器配置於引擎之外方。致動器位於較氣缸頭之端部更靠頭蓋側。 The actuator pushes the switching pin member in the axial direction of the cam shaft to switch the pin member The position is switched to the first position and the second position. At least a portion of the switching pin member overlaps the head cover when viewed from the axial direction of the cam shaft. The actuator is disposed on the opposite side of the cam shaft from the cam chain chamber in the axial direction of the cam shaft. The actuator is placed outside the engine. The actuator is located closer to the head cover than the end of the cylinder head.
於本態樣之引擎中,即便將致動器接近於切換銷構件而配置,與致動器位於較氣缸頭之端部更靠氣缸體側之情形相比,亦可抑制自燃燒室對致動器之熱影響。藉此,可抑制對致動器之熱影響,且可使搭載有可變閥動機構之引擎小型化。 In the engine of the present aspect, even if the actuator is disposed close to the switching pin member, the actuation from the combustion chamber pair can be suppressed as compared with the case where the actuator is located closer to the cylinder block than the end portion of the cylinder head. The thermal impact of the device. Thereby, the thermal influence on the actuator can be suppressed, and the engine equipped with the variable valve actuation mechanism can be downsized.
再者,所謂「頭蓋側」係指於氣缸軸線方向自氣缸頭朝向頭蓋之方向。又,所謂「氣缸體側」係指於氣缸軸線方向自氣缸頭朝向氣缸體之方向。 In addition, the "head cover side" means the direction from the cylinder head toward the head cover in the cylinder axis direction. In addition, the "cylinder body side" means a direction from the cylinder head toward the cylinder block in the cylinder axis direction.
較佳為,致動器安裝於頭蓋。此情形時,與將致動器安裝於氣缸頭之情形相比,可進一步抑制對致動器之熱影響。因此,可抑制自燃燒室對致動器之熱影響,且可使搭載有可變閥動機構之引擎小型化。 Preferably, the actuator is mounted to the head cover. In this case, the thermal influence on the actuator can be further suppressed as compared with the case where the actuator is mounted to the cylinder head. Therefore, the thermal influence from the combustion chamber to the actuator can be suppressed, and the engine equipped with the variable valve actuation mechanism can be miniaturized.
較佳為,於自氣缸軸線方向觀察時,致動器之至少一部分位於較氣缸頭之端部更靠氣缸頭之內側。此情形時,致動器與切換銷構件之距離變短,藉此可減小切換銷構件所需之驅動力。藉此,可使致動器小型化。因此,可使搭載有可變閥動機構之引擎進一步小型化。 Preferably, at least a portion of the actuator is located closer to the inside of the cylinder head than the end of the cylinder head when viewed from the cylinder axis direction. In this case, the distance between the actuator and the switching pin member is shortened, whereby the driving force required to switch the pin member can be reduced. Thereby, the actuator can be miniaturized. Therefore, the engine equipped with the variable valve actuation mechanism can be further miniaturized.
較佳為,氣缸頭包括對排氣管之連接部。於自氣缸軸線方向觀察時,凸輪軸之軸線位於連接部與致動器之間。 Preferably, the cylinder head includes a connection to the exhaust pipe. The axis of the camshaft is located between the connecting portion and the actuator when viewed from the cylinder axis direction.
此情形時,藉由將致動器配置於與高溫之排氣管隔開之位置,可抑制來自排氣管之熱影響。因此,可抑制自燃燒室對致動器之熱影響,且可使搭載有可變閥動機構之引擎小型化。 In this case, by arranging the actuator at a position spaced apart from the high temperature exhaust pipe, the thermal influence from the exhaust pipe can be suppressed. Therefore, the thermal influence from the combustion chamber to the actuator can be suppressed, and the engine equipped with the variable valve actuation mechanism can be miniaturized.
較佳為,致動器包括推壓切換銷構件之桿、及驅動桿之本體部。本體部安裝於頭蓋。桿支撐於頭蓋。 Preferably, the actuator includes a lever that pushes the switching pin member and a body portion of the drive lever. The body portion is mounted to the head cover. The rod is supported on the head cover.
此情形時,桿及致動器之本體部被配置於頭蓋。因此,自致動器向切換銷構件之驅動力之傳遞損失較少。藉此,可使致動器小型化。因此,可使搭載有可變閥動機構之引擎進一步小型化。 In this case, the body portion of the rod and the actuator is disposed on the head cover. Therefore, the transmission loss from the driving force of the actuator to the switching pin member is small. Thereby, the actuator can be miniaturized. Therefore, the engine equipped with the variable valve actuation mechanism can be further miniaturized.
較佳為,氣缸頭包括支撐凸輪軸及搖動軸之支撐壁。支撐壁包括與桿相對向之凹部。此情形時,藉由凹部而可靠近搖動軸配置桿。藉此,可使搭載有可變閥動機構之引擎進一步小型化。 Preferably, the cylinder head includes a support wall that supports the cam shaft and the rocking shaft. The support wall includes a recess opposite the rod. In this case, the rod can be placed close to the rocking shaft by the recess. Thereby, the engine equipped with the variable valve actuation mechanism can be further miniaturized.
根據本發明,可抑制自燃燒室對致動器之熱影響,且可使搭載有可變閥動機構之引擎小型化。 According to the present invention, the thermal influence from the combustion chamber to the actuator can be suppressed, and the engine equipped with the variable valve actuation mechanism can be miniaturized.
1‧‧‧引擎 1‧‧‧ engine
2‧‧‧曲柄軸 2‧‧‧ crankshaft
3‧‧‧曲柄軸箱 3‧‧‧ crankcase
4‧‧‧氣缸部 4‧‧‧Cylinder Department
5‧‧‧氣缸體 5‧‧‧Cylinder block
6‧‧‧氣缸頭 6‧‧‧ cylinder head
7‧‧‧頭蓋 7‧‧‧ head cover
8‧‧‧活塞 8‧‧‧Piston
9‧‧‧連桿 9‧‧‧ Connecting rod
11‧‧‧燃燒室 11‧‧‧ combustion chamber
12‧‧‧火星塞 12‧‧‧Mars plug
13‧‧‧閥動機構 13‧‧‧Valve mechanism
14‧‧‧凸輪軸 14‧‧‧Camshaft
15‧‧‧凸輪鏈條 15‧‧‧Cam chain
16‧‧‧凸輪鏈條室 16‧‧‧Cam chain room
17‧‧‧水泵 17‧‧‧Water pump
18‧‧‧冷卻液軟管 18‧‧‧ coolant hose
19‧‧‧散熱器 19‧‧‧ radiator
21‧‧‧墊片 21‧‧‧shims
22‧‧‧第1軸承 22‧‧‧1st bearing
23‧‧‧第2軸承 23‧‧‧2nd bearing
24‧‧‧排氣用閥門 24‧‧‧Exhaust valve
25‧‧‧排氣用閥門 25‧‧‧Exhaust valve
26‧‧‧進氣用閥門 26‧‧‧Intake valve
27‧‧‧進氣用閥門 27‧‧‧Intake valve
31‧‧‧排氣搖動軸 31‧‧‧Exhaust rocking shaft
32‧‧‧排氣搖動臂 32‧‧‧Exhaust rocker arm
33‧‧‧進氣搖動軸 33‧‧‧Intake shaft
34‧‧‧進氣搖動臂 34‧‧‧Intake swing arm
35‧‧‧切換銷構件 35‧‧‧Switch pin member
36‧‧‧第1搖動臂 36‧‧‧1st swing arm
37‧‧‧第2搖臂 37‧‧‧2nd rocker
38‧‧‧施力構件 38‧‧‧ force components
39‧‧‧致動器 39‧‧‧Actuator
41‧‧‧第1支撐構件 41‧‧‧1st support member
42‧‧‧第2支撐構件 42‧‧‧2nd support member
44‧‧‧彈性構件 44‧‧‧Flexible components
51‧‧‧螺釘 51‧‧‧ screws
52‧‧‧螺釘 52‧‧‧ screws
61‧‧‧第1緊固螺釘 61‧‧‧1st fastening screw
62‧‧‧第2緊固螺釘 62‧‧‧2nd fastening screw
65‧‧‧第1頭部 65‧‧‧1st head
66‧‧‧第2頭部 66‧‧‧2nd head
67‧‧‧第3頭部 67‧‧‧3rd head
68‧‧‧第4頭部 68‧‧‧4th head
141‧‧‧第1凸輪軸端部 141‧‧‧1st camshaft end
142‧‧‧第2凸輪軸端部 142‧‧‧2nd camshaft end
143‧‧‧第1凸輪軸驅動部 143‧‧‧1st camshaft drive
144‧‧‧第1進氣用凸輪 144‧‧‧1st intake cam
145‧‧‧第2進氣用凸輪 145‧‧‧2nd intake cam
146‧‧‧排氣用凸輪 146‧‧‧Exhaust cam
201‧‧‧第2凸輪軸驅動部 201‧‧‧2nd camshaft drive unit
241‧‧‧排氣閥門彈簧 241‧‧‧Exhaust valve spring
242‧‧‧第1排氣閥門之柱端 242‧‧‧The end of the first exhaust valve
251‧‧‧排氣閥門彈簧 251‧‧‧Exhaust valve spring
252‧‧‧第2排氣閥門之柱端 252‧‧‧ the end of the second exhaust valve
261‧‧‧進氣閥門彈簧 261‧‧‧Intake valve spring
262‧‧‧第1進氣閥門之柱端 262‧‧‧The end of the first intake valve
271‧‧‧進氣閥門彈簧 271‧‧‧Intake valve spring
272‧‧‧第2進氣閥門之柱端 272‧‧‧ the end of the second intake valve
321‧‧‧臂本體 321‧‧‧arm body
322‧‧‧輥支撐部 322‧‧‧Roll support
323‧‧‧輥 323‧‧‧roll
324‧‧‧排氣閥門推壓部 324‧‧‧Exhaust valve pusher
325‧‧‧第1調節螺桿 325‧‧‧1st adjustment screw
326‧‧‧第2調節螺桿 326‧‧‧2nd adjustment screw
327‧‧‧貫通孔 327‧‧‧through holes
361‧‧‧第1臂本體 361‧‧‧1st arm body
362‧‧‧第1輥支撐部 362‧‧‧1st roller support
363‧‧‧第1輥 363‧‧‧1st roll
364‧‧‧進氣閥門推壓部 364‧‧‧Intake valve pusher
365‧‧‧第1連結部 365‧‧‧1st link
366‧‧‧貫通孔 366‧‧‧through holes
367‧‧‧第1調節螺桿 367‧‧‧1st adjustment screw
368‧‧‧第2調節螺桿 368‧‧‧2nd adjustment screw
369‧‧‧貫通孔 369‧‧‧through holes
371‧‧‧第2臂本體 371‧‧‧2nd arm body
372‧‧‧第2輥支撐部 372‧‧‧2nd roller support
373‧‧‧第2輥 373‧‧‧2nd roller
374‧‧‧第2連結部 374‧‧‧2nd link
375‧‧‧貫通孔 375‧‧‧through holes
376‧‧‧貫通孔 376‧‧‧through holes
391‧‧‧桿 391‧‧‧ rod
392‧‧‧本體部 392‧‧‧ Body Department
393‧‧‧凸緣部 393‧‧‧Flange
601‧‧‧第1端部 601‧‧‧1st end
602‧‧‧第2端部 602‧‧‧2nd end
603‧‧‧第1氣缸側壁 603‧‧‧1st cylinder side wall
604‧‧‧第2氣缸側壁 604‧‧‧2nd cylinder side wall
605‧‧‧第1突出壁部 605‧‧‧1st protruding wall
606‧‧‧第2突出壁部 606‧‧‧2nd protruding wall
607‧‧‧凹部 607‧‧‧ recess
608‧‧‧第3氣缸側壁 608‧‧‧3rd cylinder side wall
609‧‧‧第4氣缸側壁 609‧‧‧4th cylinder side wall
610‧‧‧進氣管之連接部 610‧‧‧Connecting pipe connection
611‧‧‧進氣管之連接部 611‧‧‧Connecting pipe connection
612‧‧‧第1支撐壁 612‧‧‧1st support wall
613‧‧‧第2支撐壁 613‧‧‧2nd support wall
614‧‧‧進氣埠 614‧‧‧Intake 埠
615‧‧‧排氣埠 615‧‧‧Exhaust gas
619‧‧‧段部 619‧‧‧ Section
620‧‧‧凹部 620‧‧‧ recess
621‧‧‧第1貫通孔 621‧‧‧1st through hole
622‧‧‧第2貫通孔 622‧‧‧2nd through hole
701‧‧‧頭蓋之端部 701‧‧‧ end of the head cover
702‧‧‧第1外殼側壁 702‧‧‧1st outer casing side wall
703‧‧‧第2外殼側壁 703‧‧‧2nd casing side wall
704‧‧‧貫通孔 704‧‧‧through holes
705‧‧‧第1凸座部 705‧‧‧1st seat
706‧‧‧第2凸座部 706‧‧‧2nd seat
Ax1‧‧‧氣缸軸線 Ax1‧‧‧Cylinder axis
Ax2‧‧‧曲柄軸線 Ax2‧‧‧ crank axis
Ax3‧‧‧凸輪軸線 Ax3‧‧‧ cam axis
D1‧‧‧距離 D1‧‧‧ distance
D2‧‧‧距離 D2‧‧‧ distance
P1‧‧‧第1假想平面 P1‧‧‧1st imaginary plane
P2‧‧‧第2假想平面 P2‧‧‧2nd imaginary plane
P3‧‧‧第3假想平面 P3‧‧‧3rd imaginary plane
圖1係引擎之一部分之剖面圖。 Figure 1 is a cross-sectional view of a portion of the engine.
圖2係自與氣缸軸線及凸輪軸線垂直之方向觀察氣缸頭及頭蓋而得之圖。 Figure 2 is a view of the cylinder head and the head cover viewed from a direction perpendicular to the cylinder axis and the cam axis.
圖3係自與氣缸軸線及凸輪軸線垂直之方向觀察氣缸頭及頭蓋而得之剖面圖。 Figure 3 is a cross-sectional view of the cylinder head and the head cover viewed from a direction perpendicular to the cylinder axis and the cam axis.
圖4係氣缸頭之內部之立體圖。 Figure 4 is a perspective view of the inside of the cylinder head.
圖5係氣缸頭之內部之立體圖。 Figure 5 is a perspective view of the interior of the cylinder head.
圖6係自氣缸軸線方向觀察氣缸頭之內部而得之圖。 Fig. 6 is a view showing the inside of the cylinder head viewed from the cylinder axis direction.
圖7係自凸輪軸線方向觀察氣缸頭之內部而得之剖面圖。 Fig. 7 is a cross-sectional view showing the inside of the cylinder head viewed from the direction of the cam axis.
圖8係第2支撐壁及施力構件附近之剖面圖。 Fig. 8 is a cross-sectional view showing the vicinity of the second support wall and the urging member.
圖9係自凸輪軸線方向觀察氣缸頭之內部而得之剖面圖。 Figure 9 is a cross-sectional view showing the inside of the cylinder head viewed from the direction of the cam axis.
圖10係自氣缸軸線方向觀察氣缸頭及頭蓋而得之圖。 Fig. 10 is a view showing the cylinder head and the head cover viewed from the cylinder axis direction.
圖11係自與凸輪軸線及氣缸軸線垂直之方向觀察到之引擎之一部分之剖面圖。 Figure 11 is a cross-sectional view of a portion of the engine as viewed from a direction perpendicular to the cam axis and the cylinder axis.
圖12係自與凸輪軸線及氣缸軸線垂直之方向觀察到之引擎之一部分之剖面圖。 Figure 12 is a cross-sectional view of a portion of the engine as viewed from a direction perpendicular to the cam axis and the cylinder axis.
以下,參照圖式對實施形態之引擎1進行說明。本實施形態之引擎1為水冷式之單氣缸引擎。圖1係引擎1之一部分之剖面圖。如圖1所示,引擎1包括曲柄軸2、曲柄軸箱3及氣缸部4。曲柄軸箱3收容曲柄軸2。氣缸部4包括氣缸體5、氣缸頭6及頭蓋7。氣缸體5連接於曲柄軸箱3。氣缸體5可與曲柄軸箱3為一體,或亦可與曲柄軸箱3分開。氣缸體5收容活塞8。活塞8係經由連桿9而連結於曲柄軸2。 Hereinafter, the engine 1 of the embodiment will be described with reference to the drawings. The engine 1 of the present embodiment is a water-cooled single cylinder engine. Figure 1 is a cross-sectional view of a portion of the engine 1. As shown in FIG. 1, the engine 1 includes a crankshaft 2, a crankcase 3, and a cylinder portion 4. The crankcase 3 houses the crankshaft 2. The cylinder portion 4 includes a cylinder block 5, a cylinder head 6, and a head cover 7. The cylinder block 5 is coupled to the crankcase 3. The cylinder block 5 may be integral with the crankcase 3 or may be separate from the crankcase 3. The cylinder block 5 houses the piston 8. The piston 8 is coupled to the crankshaft 2 via a connecting rod 9.
再者,於本實施形態中,將於氣缸體5之氣缸軸線Ax1方向自氣缸頭6朝向頭蓋7之方向稱為「頭蓋側」。又,將於氣缸軸線Ax1方向自氣缸頭6朝向氣缸體5之方向稱為「氣缸體側」。 Further, in the present embodiment, the direction from the cylinder head 6 toward the head cover 7 in the cylinder axis Ax1 direction of the cylinder block 5 is referred to as "head cover side". Further, the direction from the cylinder head 6 toward the cylinder block 5 in the cylinder axis Ax1 direction is referred to as "cylinder block side".
氣缸頭6配置於氣缸體5之頭蓋側。氣缸頭6安裝於氣缸體5。頭蓋7配置於氣缸頭6之頭蓋側。頭蓋7安裝於氣缸頭6。氣缸軸線Ax1相對於曲柄軸2之中心軸線Ax2(以下稱為「曲柄軸線Ax2」)垂直。氣缸頭6包括燃燒室11。於氣缸頭6安裝有火星塞12。火星塞12之前端部係面向燃燒室11配置。火星塞12之基端部配置於引擎1之外部。於氣缸頭6及頭蓋7中收容有閥動機構13。 The cylinder head 6 is disposed on the head cover side of the cylinder block 5. The cylinder head 6 is mounted to the cylinder block 5. The head cover 7 is disposed on the head cover side of the cylinder head 6. The head cover 7 is mounted to the cylinder head 6. The cylinder axis Ax1 is perpendicular to the central axis Ax2 of the crankshaft 2 (hereinafter referred to as "crank axis Ax2"). The cylinder head 6 includes a combustion chamber 11. A spark plug 12 is mounted to the cylinder head 6. The front end of the spark plug 12 is disposed facing the combustion chamber 11. The base end of the Mars plug 12 is disposed outside of the engine 1. A valve actuation mechanism 13 is housed in the cylinder head 6 and the head cover 7.
閥動機構13係用以開閉下述排氣用閥門24、25及進氣用閥門26、27之機構。對閥動機構13採用SOHC(Single OverHead Camshaft,單頂置式凸輪軸)式之機構。對閥動機構13採用切換進氣用閥門26、27之開閉之時序之所謂可變閥動機構。閥動機構13包括凸輪軸14。凸輪軸14支撐於氣缸頭6。凸輪軸14之中心軸線Ax3(以下稱為「凸輪軸線Ax3」)相對於氣缸軸線Ax1垂直。凸輪軸線Ax3與曲柄軸線Ax2平行。 The valve mechanism 13 is a mechanism for opening and closing the following exhaust valves 24 and 25 and the intake valves 26 and 27. A mechanism of a SOHC (Single OverHead Camshaft) type is employed for the valve actuation mechanism 13. The valve mechanism 13 is a so-called variable valve mechanism that switches the timing of opening and closing of the intake valves 26 and 27. The valve actuation mechanism 13 includes a camshaft 14. The camshaft 14 is supported by the cylinder head 6. The central axis Ax3 of the camshaft 14 (hereinafter referred to as "cam axis Ax3") is perpendicular to the cylinder axis Ax1. The cam axis Ax3 is parallel to the crank axis Ax2.
凸輪軸14包括第1凸輪軸端部141及第2凸輪軸端部142。於第1凸輪軸端部141設置有第1凸輪軸驅動部143。第1凸輪軸驅動部143為鏈輪。第1凸輪軸驅動部143與凸輪鏈條15嚙合,凸輪鏈條15連結於凸輪 軸14。於曲柄軸2設置有第2凸輪軸驅動部201。第2凸輪軸驅動部201為鏈輪。第2凸輪軸驅動部201與凸輪鏈條15嚙合,凸輪鏈條15連結於曲柄軸2。即,凸輪鏈條15捲繞於凸輪軸14之第1凸輪軸驅動部143及曲柄軸2之第2凸輪軸驅動部201。曲柄軸2之旋轉經由凸輪鏈條15而傳遞至凸輪軸14,藉此凸輪軸14旋轉。 The camshaft 14 includes a first camshaft end 141 and a second camshaft end 142. The first camshaft drive unit 143 is provided at the first camshaft end portion 141. The first camshaft drive unit 143 is a sprocket. The first camshaft drive unit 143 is meshed with the cam chain 15, and the cam chain 15 is coupled to the cam. Axis 14. The second camshaft drive unit 201 is provided on the crankshaft 2 . The second camshaft drive unit 201 is a sprocket. The second camshaft drive unit 201 meshes with the cam chain 15 , and the cam chain 15 is coupled to the crankshaft 2 . That is, the cam chain 15 is wound around the first camshaft drive unit 143 of the camshaft 14 and the second camshaft drive unit 201 of the crankshaft 2. The rotation of the crankshaft 2 is transmitted to the camshaft 14 via the cam chain 15, whereby the camshaft 14 rotates.
於氣缸頭6及氣缸體5,設置有凸輪鏈條室16。凸輪鏈條15配置於凸輪鏈條室16。凸輪鏈條室16係相對於燃燒室11配置於與氣缸軸線Ax1垂直之方向。即,凸輪鏈條室16與燃燒室11於凸輪軸線Ax3方向並排配置。 A cam chain chamber 16 is provided in the cylinder head 6 and the cylinder block 5. The cam chain 15 is disposed in the cam chain chamber 16. The cam chain chamber 16 is disposed in a direction perpendicular to the cylinder axis Ax1 with respect to the combustion chamber 11. That is, the cam chain chamber 16 and the combustion chamber 11 are arranged side by side in the direction of the cam axis Ax3.
於第1凸輪軸端部141連結有水泵17。水泵17配置於凸輪軸14之凸輪軸線Ax3方向。水泵17係經由冷卻液軟管18而與引擎1內之未圖示之冷卻液通路及散熱器19連接。水泵17係由凸輪軸14之旋轉驅動,藉此使引擎1之冷卻液循環。 A water pump 17 is coupled to the first camshaft end portion 141. The water pump 17 is disposed in the cam axis Ax3 direction of the cam shaft 14. The water pump 17 is connected to a coolant passage (not shown) and a radiator 19 in the engine 1 via a coolant hose 18. The water pump 17 is driven by the rotation of the cam shaft 14, whereby the coolant of the engine 1 is circulated.
圖2係自與氣缸軸線Ax1及凸輪軸線Ax3垂直之方向觀察氣缸頭6及頭蓋7而得之圖。圖3係自與氣缸軸線Ax1及凸輪軸線Ax3垂直之方向觀察氣缸頭6及頭蓋7而得之剖面圖。再者,於圖2及圖3中,水泵17被自氣缸頭6及頭蓋7卸除。 2 is a view showing the cylinder head 6 and the head cover 7 viewed from a direction perpendicular to the cylinder axis Ax1 and the cam axis Ax3. 3 is a cross-sectional view showing the cylinder head 6 and the head cover 7 viewed from a direction perpendicular to the cylinder axis Ax1 and the cam axis Ax3. Further, in FIGS. 2 and 3, the water pump 17 is removed from the cylinder head 6 and the head cover 7.
氣缸頭6包括第1端部601及第2端部602。第1端部601係於氣缸軸線Ax1方向與頭蓋7之端部701對向配置。第2端部602係於氣缸軸線Ax1方向與氣缸體5之端部對向配置。第1端部601與第2端部602係沿相對於氣缸軸線Ax1垂直之方向延伸。 The cylinder head 6 includes a first end portion 601 and a second end portion 602. The first end portion 601 is disposed to face the end portion 701 of the head cover 7 in the cylinder axis Ax1 direction. The second end portion 602 is disposed to face the end portion of the cylinder block 5 in the cylinder axis Ax1 direction. The first end portion 601 and the second end portion 602 extend in a direction perpendicular to the cylinder axis Ax1.
如圖1~12所示,包括氣缸頭6之第1端部601之第1假想平面P1與包括頭蓋7之端部701之第2假想平面P2係與凸輪軸14重疊。詳細而言,第1假想平面P1與第2假想平面P2位於較凸輪軸線Ax3更靠頭蓋側。再者,於氣缸頭6之第1端部601與頭蓋7之端部701之間夾持有墊片21。 As shown in FIGS. 1 to 12, the first imaginary plane P1 including the first end portion 601 of the cylinder head 6 and the second imaginary plane P2 including the end portion 701 of the head cover 7 are overlapped with the cam shaft 14. Specifically, the first imaginary plane P1 and the second imaginary plane P2 are located closer to the head cover than the cam axis Ax3. Further, a spacer 21 is interposed between the first end portion 601 of the cylinder head 6 and the end portion 701 of the head cover 7.
氣缸頭6包括第1氣缸側壁603及第2氣缸側壁604。第1氣缸側壁 603與第2氣缸側壁604係於凸輪軸線Ax3方向對向配置。第2氣缸側壁604較第1氣缸側壁603更靠近凸輪鏈條室16。第2氣缸側壁604較第1氣缸側壁603更靠近第1凸輪軸驅動部143。 The cylinder head 6 includes a first cylinder side wall 603 and a second cylinder side wall 604. First cylinder side wall 603 is disposed opposite to the second cylinder side wall 604 in the direction of the cam axis Ax3. The second cylinder side wall 604 is closer to the cam chain chamber 16 than the first cylinder side wall 603. The second cylinder side wall 604 is closer to the first cam shaft driving portion 143 than the first cylinder side wall 603.
頭蓋7包括第1外殼側壁702及第2外殼側壁703。第1外殼側壁702與第2外殼側壁703係於凸輪軸線Ax3方向對向配置。第1外殼側壁702位於第1氣缸側壁603之頭蓋側,且連接於第1氣缸側壁603。第2外殼側壁703位於第2氣缸側壁604之頭蓋側,且連接於第2氣缸側壁604。第2外殼側壁703較第1外殼側壁702更靠近凸輪鏈條室16。第2外殼側壁703較第1外殼側壁702更靠近第1凸輪軸驅動部143。 The head cover 7 includes a first outer casing side wall 702 and a second outer casing side wall 703. The first outer casing side wall 702 and the second outer casing side wall 703 are disposed to face each other in the direction of the cam axis Ax3. The first outer casing side wall 702 is located on the head cover side of the first cylinder side wall 603 and is connected to the first cylinder side wall 603. The second outer casing side wall 703 is located on the head cover side of the second cylinder side wall 604 and is connected to the second cylinder side wall 604. The second outer casing side wall 703 is closer to the cam chain chamber 16 than the first outer casing side wall 702. The second outer casing side wall 703 is closer to the first cam shaft driving portion 143 than the first outer casing side wall 702.
圖4及圖5係氣缸頭6之內部之立體圖。圖6係自氣缸軸線Ax1方向觀察氣缸頭6之內部而得之圖。如圖6所示,第1氣缸側壁603包括第1突出壁部605、第2突出壁部606及凹部607。第1突出壁部605與第2突出壁部606具有於凸輪軸線Ax3方向朝氣缸頭6之外方突出之形狀。凹部607位於第1突出壁部605與第2突出壁部606之間。凹部607具有於凸輪軸線Ax3方向朝氣缸頭6之內方凹陷之形狀。上述火星塞12係安裝於第1氣缸側壁603。火星塞12之基端部係配置於第1氣缸側壁603之凹部607。即,於自氣缸軸線Ax1方向觀察時,火星塞12之基端部配置於第1突出壁部605與第2突出壁部606之間。 4 and 5 are perspective views of the inside of the cylinder head 6. Fig. 6 is a view showing the inside of the cylinder head 6 as viewed from the cylinder axis Ax1 direction. As shown in FIG. 6, the first cylinder side wall 603 includes a first protruding wall portion 605, a second protruding wall portion 606, and a recessed portion 607. The first protruding wall portion 605 and the second protruding wall portion 606 have a shape that protrudes outward in the direction of the cam axis Ax3 toward the cylinder head 6 . The recessed portion 607 is located between the first protruding wall portion 605 and the second protruding wall portion 606. The recess 607 has a shape recessed toward the inside of the cylinder head 6 in the direction of the cam axis Ax3. The Mars plug 12 is attached to the first cylinder side wall 603. The base end portion of the Mars plug 12 is disposed in the recess 607 of the first cylinder side wall 603. That is, the base end portion of the spark plug 12 is disposed between the first protruding wall portion 605 and the second protruding wall portion 606 when viewed from the cylinder axis Ax1 direction.
氣缸頭6包括第3氣缸側壁608及第4氣缸側壁609。第3氣缸側壁608與第4氣缸側壁609係於與凸輪軸線Ax3及氣缸軸線Ax1垂直之方向並排配置。於第3氣缸側壁608,設置有排氣管(未圖示)之連接部610。如圖4所示,於第4氣缸側壁609,設置有進氣管(未圖示)之連接部611。 The cylinder head 6 includes a third cylinder sidewall 608 and a fourth cylinder sidewall 609. The third cylinder side wall 608 and the fourth cylinder side wall 609 are arranged side by side in a direction perpendicular to the cam axis Ax3 and the cylinder axis Ax1. A connection portion 610 of an exhaust pipe (not shown) is provided in the third cylinder side wall 608. As shown in FIG. 4, a connection portion 611 of an intake pipe (not shown) is provided in the fourth cylinder side wall 609.
氣缸頭6包括第1支撐壁612及第2支撐壁613。第1支撐壁612與第2支撐壁613係於凸輪軸線Ax3方向並排配置。第1支撐壁612與第2支撐壁613支撐凸輪軸14(參照圖1)使之可旋轉。如圖1~12所示,第1支 撐壁612係經由第1軸承22而支撐凸輪軸14。第2支撐壁613係經由第2軸承23而支撐凸輪軸14。第1支撐壁612與第2支撐壁613係配置於第1凸輪軸驅動部143與第1氣缸側壁603之間。第2支撐壁613較第1支撐壁612更靠近第1凸輪軸驅動部143。第2支撐壁613於凸輪軸線Ax3方向配置於第1支撐壁612與第1凸輪軸驅動部143之間。第1支撐壁612之脊部位於較氣缸頭6之第1端部601更靠頭蓋側。第2支撐壁613之脊部位於較氣缸頭6之第1端部601更靠頭蓋側。 The cylinder head 6 includes a first support wall 612 and a second support wall 613. The first support wall 612 and the second support wall 613 are arranged side by side in the direction of the cam axis Ax3. The first support wall 612 and the second support wall 613 support the cam shaft 14 (see FIG. 1) so as to be rotatable. As shown in Figure 1~12, the first branch The support wall 612 supports the cam shaft 14 via the first bearing 22 . The second support wall 613 supports the cam shaft 14 via the second bearing 23 . The first support wall 612 and the second support wall 613 are disposed between the first camshaft drive unit 143 and the first cylinder side wall 603. The second support wall 613 is closer to the first camshaft drive unit 143 than the first support wall 612. The second support wall 613 is disposed between the first support wall 612 and the first camshaft drive unit 143 in the cam axis Ax3 direction. The ridge portion of the first support wall 612 is located closer to the head cover than the first end portion 601 of the cylinder head 6. The ridge portion of the second support wall 613 is located closer to the head cover than the first end portion 601 of the cylinder head 6.
圖7係自凸輪軸線Ax3方向觀察氣缸頭6之內部而得之剖面圖。如圖4~圖7所示,於氣缸頭6安裝有進氣用閥門26、27及排氣用閥門24、25。如圖1~12所示,氣缸頭6包括連通於燃燒室11之進氣埠614及排氣埠615。進氣用閥門26、27開閉進氣埠614。如圖6所示,進氣用閥門26、27包括第1進氣閥門26及第2進氣閥門27。第1進氣閥門26與第2進氣閥門27係於凸輪軸線Ax3方向並排配置。如圖1~12所示,於第1進氣閥門26安裝有進氣閥門彈簧261。進氣閥門彈簧261係朝第1進氣閥門26關閉進氣埠614之方向對第1進氣閥門26施力。關於第2進氣閥門27,亦同樣地安裝有進氣閥門彈簧271(參照圖4),且朝第2進氣閥門27關閉進氣埠614之方向對第2進氣閥門27施力。 Fig. 7 is a cross-sectional view showing the inside of the cylinder head 6 from the direction of the cam axis Ax3. As shown in FIGS. 4 to 7, the intake valves 26 and 27 and the exhaust valves 24 and 25 are attached to the cylinder head 6. As shown in FIGS. 1-12, the cylinder head 6 includes an intake port 614 and an exhaust port 615 that communicate with the combustion chamber 11. The intake valves 26 and 27 open and close the intake port 614. As shown in FIG. 6, the intake valves 26 and 27 include a first intake valve 26 and a second intake valve 27. The first intake valve 26 and the second intake valve 27 are arranged side by side in the direction of the cam axis Ax3. As shown in FIGS. 1 to 12, an intake valve spring 261 is attached to the first intake valve 26. The intake valve spring 261 biases the first intake valve 26 in a direction in which the first intake valve 26 closes the intake port 614. Similarly to the second intake valve 27, the intake valve spring 271 (see FIG. 4) is attached, and the second intake valve 27 is biased in the direction in which the second intake valve 27 closes the intake port 614.
排氣用閥門24、25開閉排氣埠615。如圖6所示,排氣用閥門24、25包括第1排氣閥門24及第2排氣閥門25。第1排氣閥門24與第2排氣閥門25係於凸輪軸線Ax3方向並排配置。如圖5及圖7所示,於第1排氣閥門24安裝有排氣閥門彈簧241。排氣閥門彈簧241係朝第1排氣閥門24關閉排氣埠615之方向對第1排氣閥門24施力。於第2排氣閥門25安裝有排氣閥門彈簧251,且朝第2排氣閥門25關閉排氣埠615之方向對第2排氣閥門25施力。 The exhaust valves 24 and 25 open and close the exhaust port 615. As shown in FIG. 6, the exhaust valves 24 and 25 include a first exhaust valve 24 and a second exhaust valve 25. The first exhaust valve 24 and the second exhaust valve 25 are arranged side by side in the direction of the cam axis Ax3. As shown in FIGS. 5 and 7, an exhaust valve spring 241 is attached to the first exhaust valve 24. The exhaust valve spring 241 biases the first exhaust valve 24 in a direction in which the first exhaust valve 24 closes the exhaust port 615. The exhaust valve spring 251 is attached to the second exhaust valve 25, and the second exhaust valve 25 is biased in a direction in which the second exhaust valve 25 closes the exhaust port 615.
如圖3所示,凸輪軸14包括第1進氣用凸輪144、第2進氣用凸輪145及排氣用凸輪146。第1進氣用凸輪144、第2進氣用凸輪145及排氣 用凸輪146係於凸輪軸線Ax3方向並排配置。於第1進氣用凸輪144、第2進氣用凸輪145及排氣用凸輪146中,排氣用凸輪146最靠近第1凸輪軸驅動部143。於第1進氣用凸輪144、第2進氣用凸輪145及排氣用凸輪146中,第1進氣用凸輪144距離第1凸輪軸驅動部143最遠。第2進氣用凸輪145係於凸輪軸線Ax3方向配置於第1進氣用凸輪144與排氣用凸輪146之間。 As shown in FIG. 3, the camshaft 14 includes a first intake cam 144, a second intake cam 145, and an exhaust cam 146. First intake cam 144, second intake cam 145, and exhaust The cams 146 are arranged side by side in the direction of the cam axis Ax3. Among the first intake cam 144, the second intake cam 145, and the exhaust cam 146, the exhaust cam 146 is closest to the first camshaft drive unit 143. Among the first intake cam 144, the second intake cam 145, and the exhaust cam 146, the first intake cam 144 is the farthest from the first camshaft drive unit 143. The second intake cam 145 is disposed between the first intake cam 144 and the exhaust cam 146 in the cam axis Ax3 direction.
如圖1~12所示,閥動機構13包括排氣搖動軸31及排氣搖臂32。排氣搖動軸31係與凸輪軸14平行地配置。排氣搖動軸31支撐於氣缸頭6。詳細而言,排氣搖動軸31係支撐於第1支撐壁612及第2支撐壁613。排氣搖動軸31之中心軸線位於較凸輪軸線Ax3更靠頭蓋側。 As shown in FIGS. 1 to 12, the valve actuation mechanism 13 includes an exhaust rocker shaft 31 and an exhaust rocker arm 32. The exhaust rocking shaft 31 is disposed in parallel with the cam shaft 14. The exhaust rocking shaft 31 is supported by the cylinder head 6. Specifically, the exhaust rocker shaft 31 is supported by the first support wall 612 and the second support wall 613. The center axis of the exhaust rocker shaft 31 is located closer to the head cover than the cam axis Ax3.
排氣搖臂32係可以排氣搖動軸31為中心擺動地支撐於排氣搖動軸31。排氣搖臂32係設置為可使排氣用閥門24、25動作。排氣搖臂32包括臂本體321、輥支撐部322、輥323及排氣閥門推壓部324。 The exhaust rocker arm 32 is supported by the exhaust rocker shaft 31 so as to be swingable about the exhaust rocking shaft 31. The exhaust rocker arm 32 is provided to operate the exhaust valves 24 and 25. The exhaust rocker arm 32 includes an arm body 321, a roller support portion 322, a roller 323, and an exhaust valve pressing portion 324.
臂本體321包括貫通孔327,於該貫通孔327中貫通有排氣搖動軸31。輥支撐部322係自臂本體321向凸輪軸14側突出。輥支撐部322支撐輥323使之可旋轉。輥323之旋轉中心軸係與凸輪軸線Ax3平行。輥323位於排氣搖動軸31之凸輪軸14側。輥323與排氣用凸輪146接觸,且藉由排氣用凸輪146之旋轉而旋轉。 The arm body 321 includes a through hole 327 through which the exhaust rocking shaft 31 is inserted. The roller support portion 322 protrudes from the arm body 321 toward the cam shaft 14 side. The roller support portion 322 supports the roller 323 to be rotatable. The central axis of rotation of the roller 323 is parallel to the cam axis Ax3. The roller 323 is located on the cam shaft 14 side of the exhaust rocker shaft 31. The roller 323 is in contact with the exhaust cam 146 and is rotated by the rotation of the exhaust cam 146.
排氣閥門推壓部324係自臂本體321向與凸輪軸14相反之側突出。即,排氣閥門推壓部324係自臂本體321向第1排氣閥門24之柱端(stem end)242側(以下稱為「排氣閥門側」)突出。如圖5及圖6所示,於排氣閥門推壓部324之前端,設置有第1調節螺桿(adjuster screw)325及第2調節螺桿326。第1調節螺桿325之前端與第1排氣閥門24之柱端242相對向。第2調節螺桿326之前端與第2排氣閥門25之柱端252相對向。 The exhaust valve pressing portion 324 protrudes from the arm body 321 toward the side opposite to the cam shaft 14. In other words, the exhaust valve pressing portion 324 protrudes from the arm main body 321 toward the stem end 242 side (hereinafter referred to as "exhaust valve side") of the first exhaust valve 24. As shown in FIGS. 5 and 6, a first adjusting screw 325 and a second adjusting screw 326 are provided at the front end of the exhaust valve pressing portion 324. The front end of the first adjusting screw 325 faces the column end 242 of the first exhaust valve 24. The front end of the second adjustment screw 326 is opposed to the column end 252 of the second exhaust valve 25.
若藉由排氣用凸輪146將輥323上推,則排氣搖臂32擺動,藉此 排氣閥門推壓部324將第1排氣閥門24之柱端242及第2排氣閥門25之柱端252下壓。藉此,第1排氣閥門24及第2排氣閥門25經下壓而將排氣埠615打開。於輥323未由排氣用凸輪146上推時,藉由排氣閥門彈簧241、251將第1排氣閥門24及第2排氣閥門25上推而關閉排氣埠615。 When the roller 323 is pushed up by the exhaust cam 146, the exhaust rocker arm 32 swings, thereby The exhaust valve pressing portion 324 presses the column end 242 of the first exhaust valve 24 and the column end 252 of the second exhaust valve 25. Thereby, the first exhaust valve 24 and the second exhaust valve 25 are pressed down to open the exhaust port 615. When the roller 323 is not pushed up by the exhaust cam 146, the first exhaust valve 24 and the second exhaust valve 25 are pushed up by the exhaust valve springs 241 and 251 to close the exhaust port 615.
如圖1~12所示,閥動機構13包括進氣搖動軸33、進氣搖臂34、切換銷構件35及致動器39。進氣搖動軸33係與凸輪軸14平行地配置。進氣搖動軸33支撐於氣缸頭6。詳細而言,進氣搖動軸33支撐於第1支撐壁612及第2支撐壁613。進氣搖動軸33之中心軸線位於較凸輪軸線Ax3更靠頭蓋側。 As shown in FIGS. 1 to 12, the valve actuation mechanism 13 includes an intake swing shaft 33, an intake rocker arm 34, a switching pin member 35, and an actuator 39. The intake rocking shaft 33 is disposed in parallel with the cam shaft 14. The intake rocking shaft 33 is supported by the cylinder head 6. Specifically, the intake rocking shaft 33 is supported by the first support wall 612 and the second support wall 613. The center axis of the intake rocking shaft 33 is located closer to the head cover than the cam axis Ax3.
進氣搖臂34包括第1搖臂36及第2搖臂37。第1搖臂36係可以進氣搖動軸33為中心擺動地支撐於進氣搖動軸33。第1搖臂36係設置為可使進氣用閥門26、27動作。第1搖臂36包括圖1~12所示之第1臂本體361、圖6所示之第1輥支撐部362、第1輥363、進氣閥門推壓部364、及第1連結部365。 The intake rocker arm 34 includes a first rocker arm 36 and a second rocker arm 37. The first rocker arm 36 is supported by the intake rocking shaft 33 so as to be swingable about the intake rocking shaft 33. The first rocker arm 36 is provided to operate the intake valves 26 and 27. The first rocker arm 36 includes the first arm body 361 shown in FIGS. 1 to 12, the first roller support portion 362 shown in FIG. 6, the first roller 363, the intake valve pressing portion 364, and the first coupling portion 365. .
如圖1~12所示,第1臂本體361包括貫通孔366,於該貫通孔366中貫通有進氣搖動軸33。第1輥支撐部362係自第1臂本體361向凸輪軸14側突出。第1輥支撐部362支撐第1輥363使之可旋轉。第1輥363之旋轉中心軸係與凸輪軸線Ax3平行。第1輥363位於進氣搖動軸33之凸輪軸14側。第1輥363係與第1進氣用凸輪144接觸,藉由第1進氣用凸輪144之旋轉而旋轉。 As shown in FIGS. 1 to 12, the first arm body 361 includes a through hole 366 through which the intake rocking shaft 33 passes. The first roller support portion 362 protrudes from the first arm body 361 toward the cam shaft 14 side. The first roller support portion 362 supports the first roller 363 so as to be rotatable. The central axis of rotation of the first roller 363 is parallel to the cam axis Ax3. The first roller 363 is located on the cam shaft 14 side of the intake rocking shaft 33. The first roller 363 is in contact with the first intake cam 144 and is rotated by the rotation of the first intake cam 144.
進氣閥門推壓部364係自第1臂本體361向與凸輪軸14為相反之側突出。即,進氣閥門推壓部364係自第1臂本體361向第1進氣閥門26之柱端262側(以下稱為「進氣閥門側」)突出。如圖6所示,於進氣閥門推壓部364之前端,設置有第1調節螺桿367及第2調節螺桿368。第1調節螺桿367之前端與第1進氣閥門26之柱端262相對向。第2調節螺桿368之前端與第2進氣閥門27之柱端272相對向。 The intake valve pressing portion 364 protrudes from the first arm body 361 to the side opposite to the cam shaft 14. In other words, the intake valve pressing portion 364 protrudes from the first arm body 361 toward the column end 262 side of the first intake valve 26 (hereinafter referred to as "intake valve side"). As shown in FIG. 6, the first adjustment screw 367 and the second adjustment screw 368 are provided at the front end of the intake valve pressing portion 364. The front end of the first adjustment screw 367 is opposed to the column end 262 of the first intake valve 26. The front end of the second adjustment screw 368 is opposed to the column end 272 of the second intake valve 27.
第1連結部365連接於進氣閥門推壓部364。第1連結部365位於較進氣搖動軸33更靠頭蓋側。第1連結部365位於較進氣搖動軸33更靠進氣閥門側。第1連結部365位於較進氣閥門推壓部364更靠頭蓋側。如圖1~12所示,第1連結部365包括貫通孔369。貫通孔369係沿凸輪軸線Ax3方向延伸。於貫通孔369中***有切換銷構件35。 The first connecting portion 365 is connected to the intake valve pressing portion 364. The first joint portion 365 is located closer to the head cover than the intake rocking shaft 33. The first joint portion 365 is located closer to the intake valve side than the intake rocking shaft 33. The first joint portion 365 is located closer to the head cover than the intake valve pressing portion 364. As shown in FIGS. 1 to 12, the first connecting portion 365 includes a through hole 369. The through hole 369 extends in the direction of the cam axis Ax3. A switching pin member 35 is inserted into the through hole 369.
如圖1~12所示,第2搖臂37可以進氣搖動軸33為中心擺動地被支撐。第2搖臂37係於凸輪軸線Ax3方向與第1搖臂36並排配置。第2搖臂37係配置於第1搖臂36之凸輪鏈條室16側。即,第2搖臂37較第1搖臂36更靠近第1凸輪軸驅動部143。第2搖臂37包括第2臂本體371、第2輥支撐部372、第2輥373及第2連結部374。 As shown in FIGS. 1 to 12, the second rocker arm 37 is supported to be swingable about the intake rocking shaft 33. The second rocker arm 37 is arranged side by side with the first rocker arm 36 in the direction of the cam axis Ax3. The second rocker arm 37 is disposed on the cam chain chamber 16 side of the first rocker arm 36. In other words, the second rocker arm 37 is closer to the first camshaft drive unit 143 than the first rocker arm 36. The second rocker arm 37 includes a second arm body 371 , a second roller support portion 372 , a second roller 373 , and a second coupling portion 374 .
第2臂本體371包括貫通孔375,於該貫通孔375中貫通有進氣搖動軸33。第2輥支撐部372係自第2臂本體371向凸輪軸14側突出。第2輥支撐部372支撐第2輥373使之可旋轉。第2輥373之旋轉中心軸係與凸輪軸線Ax3平行。第2輥373位於進氣搖動軸33之凸輪軸14側。第2輥373係與第2進氣用凸輪145接觸,且藉由第2進氣用凸輪145之旋轉而旋轉。 The second arm body 371 includes a through hole 375 through which the intake rocking shaft 33 passes. The second roller support portion 372 protrudes from the second arm body 371 toward the cam shaft 14 side. The second roller support portion 372 supports the second roller 373 to be rotatable. The central axis of rotation of the second roller 373 is parallel to the cam axis Ax3. The second roller 373 is located on the camshaft 14 side of the intake rocking shaft 33. The second roller 373 is in contact with the second intake cam 145 and is rotated by the rotation of the second intake cam 145.
第2連結部374係自第2臂本體371向與凸輪軸14為相反之側突出。即,第2連結部374係自第2臂本體371向進氣閥門側突出。第2連結部374位於較進氣搖動軸33更靠頭蓋側。第2連結部374位於較進氣閥門推壓部364更靠頭蓋側。如圖1~12所示,第2連結部374包括貫通孔376。貫通孔376係沿凸輪軸線Ax3方向延伸。第2連結部374之貫通孔376與第1連結部365之貫通孔369於凸輪軸線Ax3方向並排配置。因此,可於第2連結部374之貫通孔376中***切換銷構件35。 The second coupling portion 374 protrudes from the second arm body 371 on the side opposite to the cam shaft 14 . In other words, the second connecting portion 374 protrudes from the second arm body 371 toward the intake valve side. The second joint portion 374 is located closer to the head cover than the intake rocking shaft 33. The second joint portion 374 is located closer to the head cover than the intake valve pressing portion 364. As shown in FIGS. 1 to 12, the second connecting portion 374 includes a through hole 376. The through hole 376 extends in the direction of the cam axis Ax3. The through hole 376 of the second connecting portion 374 and the through hole 369 of the first connecting portion 365 are arranged side by side in the direction of the cam axis Ax3. Therefore, the switching pin member 35 can be inserted into the through hole 376 of the second coupling portion 374.
閥動機構13包括圖6所示之施力構件38。施力構件38係朝將第2輥373壓抵於凸輪軸14之方向對第2搖臂37施力。於本實施形態中,施力構件38為盤簧,使進氣搖動軸33通過施力構件38。第2搖臂37包括 第1支撐構件41。第1支撐構件41支撐施力構件38之一端。第1支撐構件41具有銷狀之形狀,且自第2搖臂37向凸輪軸線Ax3方向突出。圖8為第2支撐壁613及施力構件38附近之剖面圖。 The valve actuation mechanism 13 includes a force applying member 38 as shown in FIG. The urging member 38 biases the second rocker arm 37 in a direction in which the second roller 373 is pressed against the cam shaft 14. In the present embodiment, the urging member 38 is a coil spring, and the intake rocking shaft 33 passes through the urging member 38. The second rocker arm 37 includes The first support member 41. The first support member 41 supports one end of the urging member 38. The first support member 41 has a pin shape and protrudes from the second rocker arm 37 in the cam axis Ax3 direction. FIG. 8 is a cross-sectional view of the vicinity of the second support wall 613 and the urging member 38.
如圖8所示,閥動機構13包括第2支撐構件42。第2支撐構件42支撐施力構件38之另一端。第2支撐構件42由彎曲之板材構成,且具有L字狀之剖面形狀。於第2支撐壁613設置有段部619,第2支撐構件42支撐於段部619。 As shown in FIG. 8, the valve mechanism 13 includes a second support member 42. The second support member 42 supports the other end of the urging member 38. The second support member 42 is formed of a bent plate material and has an L-shaped cross-sectional shape. A segment portion 619 is provided in the second support wall 613, and the second support member 42 is supported by the segment portion 619.
如圖1~12所示,切換銷構件35可於凸輪軸14之軸線方向移動,且設置為可移動至第1位置及第2位置。切換銷構件35於第1位置遍及第1連結部365之貫通孔369及第2連結部374之貫通孔376而配置。藉此,切換銷構件35將第1搖臂36與第2搖臂37連結,第1搖臂36與第2搖臂37一體地擺動。於該狀態下,切換銷構件35與第1搖臂36及第2搖臂37一起擺動。 As shown in FIGS. 1 to 12, the switching pin member 35 is movable in the axial direction of the cam shaft 14, and is provided to be movable to the first position and the second position. The switching pin member 35 is disposed at the first position through the through hole 369 of the first connecting portion 365 and the through hole 376 of the second connecting portion 374. Thereby, the switching pin member 35 connects the first rocker arm 36 and the second rocker arm 37, and the first rocker arm 36 and the second rocker arm 37 swing integrally. In this state, the switching pin member 35 swings together with the first rocker arm 36 and the second rocker arm 37.
切換銷構件35於第2位置配置於第1連結部365之貫通孔369中,且不配置於第2連結部374之貫通孔376中。藉此,切換銷構件35係於第2位置使第1搖臂36與第2搖臂37為非連結,第1搖臂36與第2搖臂37相互獨立地擺動。於該狀態下,切換銷構件35與第1搖臂36一起擺動。 The switching pin member 35 is disposed in the through hole 369 of the first connecting portion 365 at the second position, and is not disposed in the through hole 376 of the second connecting portion 374. Thereby, the switching pin member 35 is in the second position, and the first rocker arm 36 and the second rocker arm 37 are disconnected, and the first rocker arm 36 and the second rocker arm 37 are independently swung. In this state, the switching pin member 35 swings together with the first rocker arm 36.
於第1連結部365設置有彈性構件44。彈性構件44係配置於第1連結部365之貫通孔369內。彈性構件44係朝自第1位置朝向第2位置之方向對切換銷構件35施力。因此,於切換銷構件35未受到致動器39推壓時,切換銷構件35係藉由彈性構件44而被保持於第2位置。若切換銷構件35受到致動器39推壓,則切換銷構件35對抗彈性構件44之施壓力而自第2位置移動至第1位置。 The elastic member 44 is provided in the first joint portion 365. The elastic member 44 is disposed in the through hole 369 of the first connecting portion 365 . The elastic member 44 urges the switching pin member 35 in a direction from the first position toward the second position. Therefore, when the switching pin member 35 is not pressed by the actuator 39, the switching pin member 35 is held at the second position by the elastic member 44. When the switching pin member 35 is pressed by the actuator 39, the switching pin member 35 moves from the second position to the first position against the pressing force of the elastic member 44.
如圖1~12所示,切換銷構件35位於較氣缸頭6之第1端部601及頭蓋7之端部701更靠頭蓋側。因此,於自凸輪軸14之軸線方向觀察時, 切換銷構件35與頭蓋7重疊。如圖1~12所示,切換銷構件35位於進氣搖動軸33之進氣閥門側。即,於與氣缸軸線Ax1及凸輪軸14之軸線垂直之方向,切換銷構件35位於進氣搖動軸33與第1進氣閥門26之柱端262之間。於自凸輪軸14之軸線方向觀察時,進氣搖動軸33之軸心與切換銷構件35之軸心之間之距離小於進氣搖動軸33之軸心與第1進氣閥門26之柱端262之間之距離。又,於與氣缸軸線Ax1及凸輪軸14之軸線垂直之方向,進氣搖動軸33位於切換銷構件35與第1輥363之間。同樣地,於與氣缸軸線Ax1及凸輪軸14之軸線垂直之方向,進氣搖動軸33位於切換銷構件35與第2輥372之間。 As shown in FIGS. 1 to 12, the switching pin member 35 is located closer to the head cover than the first end portion 601 of the cylinder head 6 and the end portion 701 of the head cover 7. Therefore, when viewed from the axial direction of the camshaft 14, The switching pin member 35 overlaps the head cover 7. As shown in FIGS. 1 to 12, the switching pin member 35 is located on the intake valve side of the intake rocking shaft 33. That is, the switching pin member 35 is located between the intake rocking shaft 33 and the column end 262 of the first intake valve 26 in a direction perpendicular to the axis of the cylinder axis Ax1 and the cam shaft 14. When viewed from the axial direction of the camshaft 14, the distance between the axis of the intake rocking shaft 33 and the axis of the switching pin member 35 is smaller than the axial center of the intake rocking shaft 33 and the column end of the first intake valve 26. The distance between 262. Further, the intake rocking shaft 33 is located between the switching pin member 35 and the first roller 363 in a direction perpendicular to the axis of the cylinder axis Ax1 and the camshaft 14. Similarly, the intake rocking shaft 33 is located between the switching pin member 35 and the second roller 372 in a direction perpendicular to the axis of the cylinder axis Ax1 and the cam shaft 14.
圖1~12係以虛線表示第1搖臂36與第2搖臂37擺動之狀態。於切換銷構件35位於第1位置時,第1搖臂36與第2搖臂37連結,且與第2搖臂37一體地擺動。因此,當第2輥373由第2進氣用凸輪145上推時,第2搖臂37以進氣搖動軸33為中心擺動,藉此,第1搖臂36亦向使進氣閥門推壓部364下降之方向擺動。藉此,第1調節螺桿367之前端將第1進氣閥門26之柱端262下壓,並且第2調節螺桿368之前端將第2進氣閥門27之柱端272下壓。藉此,第1進氣閥門26與第2進氣閥門27將進氣埠614打開。於第2輥373未由第2進氣用凸輪145上推時,藉由進氣閥門彈簧261、271將第1進氣閥門26及第2進氣閥門27上推而關閉進氣埠614。 1 to 12 show the state in which the first rocker arm 36 and the second rocker arm 37 are swung in a broken line. When the switching pin member 35 is at the first position, the first rocker arm 36 is coupled to the second rocker arm 37 and swings integrally with the second rocker arm 37. Therefore, when the second roller 373 is pushed up by the second intake cam 145, the second rocker arm 37 swings around the intake rocking shaft 33, whereby the first rocker arm 36 also urges the intake valve. The portion 364 swings in the direction of the drop. Thereby, the front end of the first adjusting screw 367 presses the column end 262 of the first intake valve 26, and the front end of the second adjusting screw 368 presses the column end 272 of the second intake valve 27. Thereby, the first intake valve 26 and the second intake valve 27 open the intake port 614. When the second roller 373 is not pushed up by the second intake cam 145, the first intake valve 26 and the second intake valve 27 are pushed up by the intake valve springs 261 and 271 to close the intake port 614.
於切換銷構件35位於第2位置時,第1搖臂36與第2搖臂37獨立地擺動。因此,當第1輥363由第1進氣用凸輪144上推時,第1搖臂36以進氣搖動軸33為中心向使進氣閥門推壓部364下降之方向擺動。藉此,第1調節螺桿367之前端將第1進氣閥門26之柱端262壓下,並且第2調節螺桿368之前端將第2進氣閥門27之柱端272壓下。藉此,第1進氣閥門26與第2進氣閥門27將進氣埠614打開。於第1輥363未由第1進氣用凸輪144上推時,藉由進氣閥門彈簧261、271將第1進氣閥門26及第2進氣閥門27上推而關閉進氣埠614。 When the switching pin member 35 is at the second position, the first rocker arm 36 and the second rocker arm 37 swing independently. Therefore, when the first roller 363 is pushed up by the first intake cam 144, the first rocker arm 36 swings in the direction in which the intake valve pressing portion 364 is lowered around the intake rocking shaft 33. Thereby, the front end of the first adjusting screw 367 presses the column end 262 of the first intake valve 26, and the front end of the second adjusting screw 368 presses the column end 272 of the second intake valve 27. Thereby, the first intake valve 26 and the second intake valve 27 open the intake port 614. When the first roller 363 is not pushed up by the first intake cam 144, the first intake valve 26 and the second intake valve 27 are pushed up by the intake valve springs 261 and 271 to close the intake port 614.
再者,第1進氣用凸輪144與第2進氣用凸輪145之形狀係以如下方式設定:於第1進氣用凸輪144之前端到達第1輥363之前,第2進氣用凸輪145將第2輥373上推。因此,於切換銷構件35位於第1位置時,第1搖臂36藉由第2進氣用凸輪145之旋轉而動作,藉此第1進氣用凸輪144之旋轉無法傳遞至第1搖臂36。因此,於切換銷構件35位於第1位置時,第1進氣閥門26及第2進氣閥門27相應於第2進氣用凸輪145之旋轉而進行開閉動作。另一方面,於切換銷構件35位於第2位置時,第2進氣用凸輪145之旋轉無法傳遞至第1搖臂36。因此,於切換銷構件35位於第2位置時,第1進氣閥門26及第2進氣閥門27相應於第1進氣用凸輪144之旋轉而進行開閉動作。 In addition, the shape of the first intake cam 144 and the second intake cam 145 is set such that the second intake cam 145 is before the first end of the first intake cam 144 reaches the first roller 363. The second roller 373 is pushed up. Therefore, when the switching pin member 35 is at the first position, the first rocker arm 36 is operated by the rotation of the second intake cam 145, whereby the rotation of the first intake cam 144 cannot be transmitted to the first rocker arm. 36. Therefore, when the switching pin member 35 is at the first position, the first intake valve 26 and the second intake valve 27 are opened and closed in accordance with the rotation of the second intake cam 145. On the other hand, when the switching pin member 35 is at the second position, the rotation of the second intake cam 145 cannot be transmitted to the first rocker arm 36. Therefore, when the switching pin member 35 is at the second position, the first intake valve 26 and the second intake valve 27 are opened and closed in accordance with the rotation of the first intake cam 144.
致動器39為電磁螺線管,藉由被通電而將切換銷構件35沿凸輪軸14之軸線方向推壓,並將切換銷構件35之位置自第2位置切換為第1位置。若停止對致動器39通電,則藉由彈性構件44之彈性力而使切換銷構件35之位置自第1位置返回至第2位置。 The actuator 39 is an electromagnetic solenoid, and the switching pin member 35 is pressed in the axial direction of the cam shaft 14 by being energized, and the position of the switching pin member 35 is switched from the second position to the first position. When the energization of the actuator 39 is stopped, the position of the switching pin member 35 is returned from the first position to the second position by the elastic force of the elastic member 44.
如圖6所示,於自氣缸軸線Ax1方向觀察時,致動器39與氣缸頭6之第1端部601重疊。即,致動器39之一部分位於較氣缸頭6之第1端部601更靠氣缸頭6之內側。於自氣缸軸線Ax1方向觀察時,致動器39配置於相對於凸輪軸14與凸輪鏈條室16為相反之側。於自氣缸軸線Ax1方向觀察時,凸輪軸線Ax3之延長線位於排氣管之連接部610與致動器39之間。如圖3所示,致動器39位於較氣缸頭6之第1端部601更靠頭蓋側。 As shown in FIG. 6, the actuator 39 overlaps the first end portion 601 of the cylinder head 6 when viewed in the cylinder axis Ax1 direction. That is, one portion of the actuator 39 is located closer to the inner side of the cylinder head 6 than the first end portion 601 of the cylinder head 6. The actuator 39 is disposed on the side opposite to the cam chain chamber 16 with respect to the cam shaft 14 when viewed from the cylinder axis Ax1 direction. The extension line of the cam axis Ax3 is located between the connection portion 610 of the exhaust pipe and the actuator 39 when viewed from the cylinder axis Ax1 direction. As shown in FIG. 3, the actuator 39 is located closer to the head cover than the first end portion 601 of the cylinder head 6.
致動器39包括推壓切換銷構件35之桿391、及驅動桿391之本體部392。桿391之中心軸線與凸輪軸線Ax3平行。桿391係以於切換銷構件35之擺動範圍內自凸輪軸線Ax3方向觀察時與切換銷構件35重疊之方式配置。桿391由本體部392驅動,藉此推壓切換銷構件35。桿391係接近於上述第1支撐壁612而配置。如圖4所示,第1支撐壁612包 括與桿391之側面對向之凹部620。凹部620具有為避開桿391而凹陷之形狀。 The actuator 39 includes a rod 391 that pushes the switching pin member 35, and a body portion 392 that drives the rod 391. The central axis of the rod 391 is parallel to the cam axis Ax3. The rod 391 is disposed so as to overlap the switching pin member 35 when viewed in the direction of the cam axis Ax3 in the swing range of the switching pin member 35. The lever 391 is driven by the body portion 392, thereby pushing the switching pin member 35. The rod 391 is disposed close to the first support wall 612 described above. As shown in FIG. 4, the first support wall 612 is wrapped A recess 620 is formed opposite the side of the rod 391. The recess 620 has a shape that is recessed to avoid the rod 391.
致動器39配置於引擎1之外方。致動器39配置於頭蓋7之外方。致動器39安裝於頭蓋7。詳細而言,本體部392安裝於頭蓋7。桿391支撐於頭蓋7。如圖1~12所示,於頭蓋7設置有貫通孔704,且桿391通過貫通孔704。 The actuator 39 is disposed outside the engine 1. The actuator 39 is disposed outside the head cover 7. The actuator 39 is mounted to the head cover 7. In detail, the main body portion 392 is attached to the head cover 7. The rod 391 is supported by the head cover 7. As shown in FIGS. 1 to 12, the head cover 7 is provided with a through hole 704, and the rod 391 passes through the through hole 704.
圖10係自氣缸軸線Ax1方向觀察氣缸頭6及頭蓋7而得之圖。如圖2及圖10所示,致動器39係於引擎1之外部安裝於頭蓋7。致動器39係安裝於第1外殼側壁702。致動器39係以不與火星塞12之軸線之延長線重疊之方式配置。於第1外殼側壁702,設置有第1凸座部705及第2凸座部706。第1凸座部705與第2凸座部706係於凸輪軸線Ax3方向朝氣缸頭6之外方自第1外殼側壁702突出。第1凸座部705與第2凸座部706係於與凸輪軸線Ax3及氣缸軸線Ax1垂直之方向並排配置。致動器39包括自本體部392突出之凸緣部393。凸緣部393係藉由螺栓51、52而固定於第1凸座部705及第2凸座部706。藉此,致動器39被固定於第1外殼側壁702。 Fig. 10 is a view showing the cylinder head 6 and the head cover 7 as viewed from the cylinder axis Ax1 direction. As shown in FIGS. 2 and 10, the actuator 39 is attached to the head cover 7 outside the engine 1. The actuator 39 is attached to the first outer casing side wall 702. The actuator 39 is disposed so as not to overlap the extension line of the axis of the spark plug 12. The first boss portion 705 and the second boss portion 706 are provided on the first case side wall 702. The first boss portion 705 and the second boss portion 706 protrude from the first outer casing side wall 702 toward the outside of the cylinder head 6 in the direction of the cam axis Ax3. The first boss portion 705 and the second boss portion 706 are arranged side by side in a direction perpendicular to the cam axis Ax3 and the cylinder axis Ax1. The actuator 39 includes a flange portion 393 that protrudes from the body portion 392. The flange portion 393 is fixed to the first boss portion 705 and the second boss portion 706 by bolts 51 and 52. Thereby, the actuator 39 is fixed to the first outer casing side wall 702.
圖11係自與凸輪軸線Ax3及氣缸軸線Ax1垂直之方向觀察到之引擎1之一部分之剖面圖。如圖1~12所示,氣缸頭6、氣缸體5及曲柄軸箱3係藉由第1緊固螺栓61及第2緊固螺栓62而緊固。氣缸頭6、氣缸體5及曲柄軸箱3係藉由未圖示之第3緊固螺栓及第4緊固螺栓而緊固。第1緊固螺栓61包括第1頭部65。第2緊固螺栓62包括第2頭部66。第3緊固螺栓包括圖6所示之第3頭部67。第4緊固螺栓包括圖6所示之第4頭部68。第1~第4頭部65-68被固定於氣缸頭6。第1頭部65包括與第1緊固螺栓61之軸部分開之螺帽,但該螺帽亦可與緊固螺栓61之軸部為一體。關於第2~第4頭部66-68,亦與第1頭部65相同。 Figure 11 is a cross-sectional view of a portion of the engine 1 as seen from a direction perpendicular to the cam axis Ax3 and the cylinder axis Ax1. As shown in FIGS. 1 to 12, the cylinder head 6, the cylinder block 5, and the crankcase 3 are fastened by the first fastening bolt 61 and the second fastening bolt 62. The cylinder head 6, the cylinder block 5, and the crank axle box 3 are fastened by a third fastening bolt and a fourth fastening bolt (not shown). The first fastening bolt 61 includes a first head portion 65. The second fastening bolt 62 includes a second head portion 66. The third fastening bolt includes a third head portion 67 as shown in FIG. The fourth fastening bolt includes a fourth head portion 68 as shown in FIG. The first to fourth heads 65 to 68 are fixed to the cylinder head 6. The first head portion 65 includes a nut that is partially open to the shaft of the first fastening bolt 61. However, the nut may be integral with the shaft portion of the fastening bolt 61. The second to fourth head portions 66-68 are also the same as the first head portion 65.
第1頭部65與第2頭部66係於凸輪軸線Ax3方向並排配置。第3頭 部67與第4頭部68係於凸輪軸線Ax3方向並排配置。第1頭部65與第3頭部67係於與凸輪軸線Ax3及氣缸軸線Ax1垂直之方向並排配置。第2頭部66與第4頭部68係於與凸輪軸線Ax3及氣缸軸線Ax1垂直之方向並排配置。 The first head portion 65 and the second head portion 66 are arranged side by side in the direction of the cam axis Ax3. Third head The portion 67 and the fourth head portion 68 are arranged side by side in the direction of the cam axis Ax3. The first head portion 65 and the third head portion 67 are arranged side by side in a direction perpendicular to the cam axis Ax3 and the cylinder axis Ax1. The second head portion 66 and the fourth head portion 68 are arranged side by side in a direction perpendicular to the cam axis Ax3 and the cylinder axis Ax1.
第1頭部65於凸輪軸線Ax3方向配置於第1氣缸側壁603與第2頭部66之間。第1氣缸側壁603較第2氣缸側壁604更靠近第1頭部65。第1頭部65配置於第1氣缸側壁603之第1突出壁部605內。於自氣缸體5之氣缸軸線Ax1方向觀察時,第1頭部65與致動器39重疊。切換銷構件35之軸線係於與凸輪軸線Ax3及氣缸軸線Ax1垂直之方向,相對於第1頭部65之中心位於進氣搖動軸33側。切換銷構件35之軸線係於與凸輪軸線Ax3及氣缸軸線Ax1垂直之方向,位於第1頭部65之中心與進氣搖動軸33之間。 The first head portion 65 is disposed between the first cylinder side wall 603 and the second head portion 66 in the direction of the cam axis Ax3. The first cylinder side wall 603 is closer to the first head portion 65 than the second cylinder side wall 604. The first head portion 65 is disposed in the first protruding wall portion 605 of the first cylinder side wall 603. The first head portion 65 overlaps the actuator 39 when viewed from the cylinder axis Ax1 direction of the cylinder block 5. The axis of the switching pin member 35 is perpendicular to the cam axis Ax3 and the cylinder axis Ax1, and is located on the intake rocking shaft 33 side with respect to the center of the first head portion 65. The axis of the switching pin member 35 is located between the center of the first head portion 65 and the intake rocking shaft 33 in a direction perpendicular to the cam axis Ax3 and the cylinder axis Ax1.
第2頭部66於凸輪軸線Ax3方向配置於第2氣缸側壁604與第1頭部65之間。第2氣缸側壁604較第1氣缸側壁603更靠近第2頭部66。於凸輪軸線Ax3方向,凸輪軸驅動部143配置於第2氣缸側壁604與第2頭部66之間。第2頭部66配置於第2支撐壁613上。第1頭部65與第2頭部66相對於凸輪軸線Ax3配置於進氣閥門側。凸輪軸線Ax3方向上之第1氣缸側壁603與第1頭部65之間的距離小於凸輪軸線Ax3方向上之第2氣缸側壁604與第2頭部66之間的距離。 The second head portion 66 is disposed between the second cylinder side wall 604 and the first head portion 65 in the direction of the cam axis Ax3. The second cylinder side wall 604 is closer to the second head portion 66 than the first cylinder side wall 603. The camshaft drive unit 143 is disposed between the second cylinder side wall 604 and the second head portion 66 in the cam axis Ax3 direction. The second head portion 66 is disposed on the second support wall 613. The first head portion 65 and the second head portion 66 are disposed on the intake valve side with respect to the cam axis Ax3. The distance between the first cylinder side wall 603 and the first head portion 65 in the cam axis Ax3 direction is smaller than the distance between the second cylinder side wall 604 and the second head portion 66 in the cam axis Ax3 direction.
第3頭部67於凸輪軸線Ax3方向配置於第1氣缸側壁603與第4頭部68之間。第1氣缸側壁603較第2氣缸側壁604更靠近第3頭部67。第3頭部67配置於第1氣缸側壁603之第2突出壁部606內。 The third head portion 67 is disposed between the first cylinder side wall 603 and the fourth head portion 68 in the cam axis Ax3 direction. The first cylinder side wall 603 is closer to the third head portion 67 than the second cylinder side wall 604. The third head portion 67 is disposed in the second protruding wall portion 606 of the first cylinder side wall 603.
第4頭部68於凸輪軸線Ax3方向配置於第2氣缸側壁604與第3頭部67之間。第2氣缸側壁604較第1氣缸側壁603更靠近第4頭部68。於凸輪軸線Ax3方向,凸輪軸驅動部143係配置於第2氣缸側壁604與第4頭部68之間。第4頭部68係配置於第2支撐壁613上。第3頭部67與第4頭 部68相對於凸輪軸線Ax3配置於排氣閥門側。凸輪軸線Ax3方向上之第1氣缸側壁603與第3頭部67之間的距離小於凸輪軸線Ax3方向上之第2氣缸側壁604與第4頭部68之間的距離。 The fourth head portion 68 is disposed between the second cylinder side wall 604 and the third head portion 67 in the cam axis Ax3 direction. The second cylinder side wall 604 is closer to the fourth head portion 68 than the first cylinder side wall 603. The camshaft drive unit 143 is disposed between the second cylinder side wall 604 and the fourth head portion 68 in the cam axis Ax3 direction. The fourth head portion 68 is disposed on the second support wall 613. Third head 67 and fourth head The portion 68 is disposed on the exhaust valve side with respect to the cam axis Ax3. The distance between the first cylinder side wall 603 and the third head portion 67 in the cam axis Ax3 direction is smaller than the distance between the second cylinder side wall 604 and the fourth head portion 68 in the cam axis Ax3 direction.
如圖11所示,第1外殼側壁702之內表面與第2外殼側壁703之內表面係以第1外殼側壁702與第2外殼側壁703之間朝向頭蓋側變窄之方式傾斜。 As shown in FIG. 11, the inner surface of the first outer casing side wall 702 and the inner surface of the second outer casing side wall 703 are inclined such that the first outer casing side wall 702 and the second outer casing side wall 703 are narrowed toward the head cover side.
氣缸頭6包括供第1緊固螺栓61配置之第1貫通孔621、及供第2緊固螺栓62配置之第2貫通孔622。第1貫通孔621與第2貫通孔622係沿氣缸軸線Ax1方向延伸。第2貫通孔622係以通過第2支撐壁613之方式設置。如圖12所示,自包括曲柄軸線Ax2且與氣缸體5之氣缸軸線Ax1垂直之第3假想平面P3至氣缸軸線Ax1方向上之第1頭部65之距離D1小於自第3假想平面P3至氣缸軸線Ax1方向上之第2頭部66之距離D2。即,第1頭部65位於較第2頭部66更靠氣缸體側。 The cylinder head 6 includes a first through hole 621 in which the first fastening bolts 61 are disposed, and a second through hole 622 in which the second fastening bolts 62 are disposed. The first through hole 621 and the second through hole 622 extend in the cylinder axis line Ax1 direction. The second through hole 622 is provided to pass through the second support wall 613. As shown in FIG. 12, the distance D1 from the third imaginary plane P3 including the crank axis Ax2 and perpendicular to the cylinder axis Ax1 of the cylinder block 5 to the first head 65 in the cylinder axis Ax1 direction is smaller than the distance from the third imaginary plane P3 to The distance D2 of the second head portion 66 in the cylinder axis Ax1 direction. That is, the first head portion 65 is located closer to the cylinder block side than the second head portion 66.
於自凸輪軸線Ax3方向觀察時,第1緊固螺栓61不與頭蓋7重疊。即,第1頭部65位於較氣缸頭6之第1端部601更靠氣缸體側。於自凸輪軸線Ax3方向觀察時,第2緊固螺栓62與頭蓋7重疊。即,第2頭部66位於較氣缸頭6之第1端部601更靠頭蓋側。 The first fastening bolt 61 does not overlap the head cover 7 when viewed in the direction of the cam axis Ax3. That is, the first head portion 65 is located closer to the cylinder block side than the first end portion 601 of the cylinder head 6. The second fastening bolt 62 overlaps the head cover 7 when viewed in the direction of the cam axis Ax3. That is, the second head portion 66 is located closer to the head cover than the first end portion 601 of the cylinder head 6.
雖然省略了圖示,但第3頭部67位於與第1頭部65相同之高度,第4頭部68位於與第2頭部66相同之高度。因此,第3頭部67位於較第4頭部68更靠氣缸體側。 Although not shown, the third head portion 67 is located at the same height as the first head portion 65, and the fourth head portion 68 is located at the same height as the second head portion 66. Therefore, the third head portion 67 is located closer to the cylinder block side than the fourth head portion 68.
於本實施形態之引擎1中,致動器39位於較氣缸頭6之第1端部601更靠頭蓋側。因此,即便將致動器39接近於切換銷構件35而配置,與致動器39位於較氣缸頭6之第1端部601更靠氣缸體側之情形相比,亦可抑制自燃燒室11對致動器39之熱影響。藉此,可抑制對致動器39之熱影響,且可使搭載有可變閥動機構之引擎1小型化。 In the engine 1 of the present embodiment, the actuator 39 is located closer to the head cover than the first end portion 601 of the cylinder head 6. Therefore, even if the actuator 39 is disposed close to the switching pin member 35, it is suppressed from the combustion chamber 11 as compared with the case where the actuator 39 is located closer to the cylinder block side than the first end portion 601 of the cylinder head 6. Thermal influence on the actuator 39. Thereby, the thermal influence on the actuator 39 can be suppressed, and the engine 1 equipped with the variable valve actuation mechanism can be miniaturized.
致動器39安裝於頭蓋7。因此,與將致動器39安裝於氣缸頭6之 情形相比,可進一步抑制對致動器39之熱影響。 The actuator 39 is mounted to the head cover 7. Therefore, the actuator 39 is mounted to the cylinder head 6 In contrast to the situation, the thermal influence on the actuator 39 can be further suppressed.
致動器39之一部分位於較氣缸頭6之第1端部601更靠氣缸頭6之內側。因此,致動器39與切換銷構件35之距離變短,藉此,可減小切換銷構件35所需之驅動力。藉此,可使致動器39小型化,且可使引擎1進一步小型化。 One portion of the actuator 39 is located further inside the cylinder head 6 than the first end portion 601 of the cylinder head 6. Therefore, the distance between the actuator 39 and the switching pin member 35 becomes short, whereby the driving force required to switch the pin member 35 can be reduced. Thereby, the actuator 39 can be miniaturized, and the engine 1 can be further miniaturized.
於自氣缸軸線Ax1方向觀察時,凸輪軸線Ax3位於排氣管之連接部610與致動器39之間。因此,藉由將致動器39配置於與高溫之排氣管隔開之位置,而可抑制來自排氣管之熱影響。 The cam axis Ax3 is located between the connecting portion 610 of the exhaust pipe and the actuator 39 when viewed from the cylinder axis Ax1 direction. Therefore, by arranging the actuator 39 at a position spaced apart from the high-temperature exhaust pipe, the thermal influence from the exhaust pipe can be suppressed.
致動器39之本體部392安裝於頭蓋7。桿391支撐於頭蓋7。即,桿391及本體部392均配置於頭蓋7。因此,自致動器39向切換銷構件35之驅動力之傳遞損失較少。藉此,藉由使致動器39小型化,可使搭載有可變閥動機構之引擎1進一步小型化。 The body portion 392 of the actuator 39 is mounted to the head cover 7. The rod 391 is supported by the head cover 7. That is, both the rod 391 and the body portion 392 are disposed on the head cover 7. Therefore, the transmission loss from the driving force of the actuator 39 to the switching pin member 35 is small. Thereby, the size of the actuator 39 can be reduced, and the engine 1 equipped with the variable valve actuation mechanism can be further reduced in size.
氣缸頭6之第1支撐壁612包括與桿391相對向之凹部607。為了避開桿391而設置凹部607,藉此,可靠近進氣搖動軸33配置桿391。藉此,可使引擎1進一步小型化。 The first support wall 612 of the cylinder head 6 includes a recess 607 opposite the rod 391. In order to avoid the rod 391, a recess 607 is provided, whereby the rod 391 can be disposed close to the intake rocking shaft 33. Thereby, the engine 1 can be further miniaturized.
以上,對本發明之一實施形態進行了說明,但本發明並不限定於上述實施形態,可於不脫離發明之主旨之範圍內進行各種變更。 The embodiment of the present invention has been described above, but the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit and scope of the invention.
引擎1並不限定於水冷式之單氣缸引擎。例如引擎1亦可為空冷式。引擎1並不限定於SOHC,亦可包括DOHC(Double OverHead Camshaft,雙頂置式凸輪軸)等其他形式之閥動機構。 The engine 1 is not limited to a water-cooled single cylinder engine. For example, the engine 1 can also be air-cooled. The engine 1 is not limited to the SOHC, and may include other types of valve actuation mechanisms such as a DOHC (Double OverHead Camshaft).
排氣用閥門之數量並不限定於2個,亦可為1個或3個以上。進氣用閥門之數量並不限定於2個,亦可為1個或3個以上。 The number of valves for exhausting is not limited to two, and may be one or three or more. The number of valves for intake air is not limited to two, and may be one or three or more.
第1頭部65、第2頭部66、第3頭部67及第4頭部68之位置並不限定於上述實施形態之位置,亦可進行變更。例如於上述之實施形態中,第1頭部65於凸輪軸14方向不與頭蓋7重疊,但第1頭部65亦可於凸輪軸14方向與頭蓋7重疊。即,第1頭部65亦可位於較頭蓋7之端部 701更靠頭蓋側。 The positions of the first head portion 65, the second head portion 66, the third head portion 67, and the fourth head portion 68 are not limited to the positions of the above-described embodiments, and may be changed. For example, in the above-described embodiment, the first head portion 65 does not overlap the head cover 7 in the direction of the cam shaft 14, but the first head portion 65 may overlap the head cover 7 in the direction of the cam shaft 14. That is, the first head portion 65 may also be located at the end of the head cover 7. 701 is more on the side of the head cover.
包括氣缸頭6之第1端部601之第1假想平面P1、及包括頭蓋7之端部701之第2假想平面P2亦可配置於與凸輪軸線Ax3相同之高度,或配置於較凸輪軸線Ax3更靠氣缸體側。或第1假想平面P1與第2假想平面P2亦可不與凸輪軸14重疊。 The first imaginary plane P1 including the first end portion 601 of the cylinder head 6 and the second imaginary plane P2 including the end portion 701 of the head cover 7 may be disposed at the same height as the cam axis Ax3 or at the cam axis Ax3. More on the side of the cylinder block. Alternatively, the first imaginary plane P1 and the second imaginary plane P2 may not overlap with the camshaft 14.
閥動機構13之構成及配置並不限定於上述之實施形態,亦可進行變更。例如,致動器39亦可安裝於氣缸頭6。或致動器39亦可以於自氣缸軸線Ax1方向觀察時不與頭蓋7之端部701重疊之方式配置。或致動器39亦可以於自氣缸軸線Ax1方向觀察時不與第1頭部65重疊之方式配置。亦可不限定於致動器39之一部分,而使致動器39之全部位於較氣缸頭6之第1端部601更靠內側。 The configuration and arrangement of the valve actuation mechanism 13 are not limited to the above-described embodiments, and may be modified. For example, the actuator 39 can also be mounted to the cylinder head 6. Alternatively, the actuator 39 may be disposed so as not to overlap the end portion 701 of the head cover 7 when viewed from the direction of the cylinder axis Ax1. Alternatively, the actuator 39 may be disposed so as not to overlap the first head portion 65 when viewed from the cylinder axis Ax1 direction. It is not limited to one portion of the actuator 39, and all of the actuators 39 are located further inside than the first end portion 601 of the cylinder head 6.
於上述之實施形態中,藉由致動器而切換閥門之開閉之時序之機構可用於進氣用閥門,亦可用於排氣用閥門。即,亦可設置與上述包括第1搖臂36、第2搖臂37、切換銷構件35及致動器39之機構相同之機構來開閉排氣用閥門。 In the above embodiment, the mechanism for switching the timing of opening and closing of the valve by the actuator can be used for the intake valve or the exhaust valve. In other words, the same mechanism as the above-described mechanism including the first rocker arm 36, the second rocker arm 37, the switching pin member 35, and the actuator 39 may be provided to open and close the exhaust valve.
6‧‧‧氣缸頭 6‧‧‧ cylinder head
12‧‧‧火星塞 12‧‧‧Mars plug
16‧‧‧凸輪鏈條室 16‧‧‧Cam chain room
24‧‧‧排氣用閥門 24‧‧‧Exhaust valve
25‧‧‧排氣用閥門 25‧‧‧Exhaust valve
26‧‧‧進氣用閥門 26‧‧‧Intake valve
27‧‧‧進氣用閥門 27‧‧‧Intake valve
31‧‧‧排氣搖動軸 31‧‧‧Exhaust rocking shaft
33‧‧‧進氣搖動軸 33‧‧‧Intake shaft
36‧‧‧第1搖動臂 36‧‧‧1st swing arm
37‧‧‧第2搖臂 37‧‧‧2nd rocker
38‧‧‧施力構件 38‧‧‧ force components
39‧‧‧致動器 39‧‧‧Actuator
41‧‧‧第1支撐構件 41‧‧‧1st support member
65‧‧‧第1頭部 65‧‧‧1st head
66‧‧‧第2頭部 66‧‧‧2nd head
67‧‧‧第3頭部 67‧‧‧3rd head
68‧‧‧第4頭部 68‧‧‧4th head
141‧‧‧第1凸輪軸端部 141‧‧‧1st camshaft end
143‧‧‧第1凸輪軸驅動部 143‧‧‧1st camshaft drive
321‧‧‧臂本體 321‧‧‧arm body
322‧‧‧輥支撐部 322‧‧‧Roll support
323‧‧‧輥 323‧‧‧roll
324‧‧‧排氣閥門推壓部 324‧‧‧Exhaust valve pusher
325‧‧‧第1調節螺桿 325‧‧‧1st adjustment screw
326‧‧‧第2調節螺桿 326‧‧‧2nd adjustment screw
362‧‧‧第1輥支撐部 362‧‧‧1st roller support
363‧‧‧第1輥 363‧‧‧1st roll
364‧‧‧進氣閥門推壓部 364‧‧‧Intake valve pusher
365‧‧‧第1連結部 365‧‧‧1st link
367‧‧‧第1調節螺桿 367‧‧‧1st adjustment screw
368‧‧‧第2調節螺桿 368‧‧‧2nd adjustment screw
373‧‧‧第2輥 373‧‧‧2nd roller
374‧‧‧第2連結部 374‧‧‧2nd link
391‧‧‧桿 391‧‧‧ rod
392‧‧‧本體部 392‧‧‧ Body Department
601‧‧‧第1端部 601‧‧‧1st end
603‧‧‧第1氣缸側壁 603‧‧‧1st cylinder side wall
604‧‧‧第2氣缸側壁 604‧‧‧2nd cylinder side wall
605‧‧‧第1突出壁部 605‧‧‧1st protruding wall
606‧‧‧第2突出壁部 606‧‧‧2nd protruding wall
607‧‧‧凹部 607‧‧‧ recess
608‧‧‧第3氣缸側壁 608‧‧‧3rd cylinder side wall
609‧‧‧第4氣缸側壁 609‧‧‧4th cylinder side wall
610‧‧‧進氣管之連接部 610‧‧‧Connecting pipe connection
612‧‧‧第1支撐壁 612‧‧‧1st support wall
613‧‧‧第2支撐壁 613‧‧‧2nd support wall
Ax3‧‧‧凸輪軸線 Ax3‧‧‧ cam axis
Claims (6)
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JP (1) | JP2015010553A (en) |
CN (1) | CN104251157B (en) |
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CO (1) | CO7240097A1 (en) |
ES (1) | ES2614236T3 (en) |
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JP6097995B2 (en) * | 2013-09-30 | 2017-03-22 | 本田技研工業株式会社 | Variable valve operating system for internal combustion engine for saddle riding type vehicle |
WO2016203686A1 (en) * | 2015-06-15 | 2016-12-22 | ヤマハ発動機株式会社 | Engine system and saddle ride-type vehicle |
JP2018084144A (en) | 2016-11-21 | 2018-05-31 | ヤマハ発動機株式会社 | Engine and vehicle |
DE102018122787A1 (en) * | 2018-09-18 | 2020-03-19 | Schaeffler Technologies AG & Co. KG | Module for a variable stroke valve train of an internal combustion engine |
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JP2012036877A (en) * | 2010-08-11 | 2012-02-23 | Honda Motor Co Ltd | Variable valve mechanism |
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JP2013209893A (en) * | 2012-03-30 | 2013-10-10 | Honda Motor Co Ltd | Variable valve gear for internal combustion engine |
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JP4243871B2 (en) * | 2007-07-04 | 2009-03-25 | 三菱自動車工業株式会社 | Variable valve operating device for internal combustion engine |
JP2010156238A (en) * | 2008-12-26 | 2010-07-15 | Honda Motor Co Ltd | Variable valve gear for internal combustion engine |
EP2472075B1 (en) * | 2009-08-24 | 2014-09-17 | Yamaha Hatsudoki Kabushiki Kaisha | Variable valve device, engine with same, and saddled vehicle |
JP5479965B2 (en) * | 2010-03-23 | 2014-04-23 | 本田技研工業株式会社 | Spark plug cooling device for vehicle engine |
JP2011202625A (en) * | 2010-03-26 | 2011-10-13 | Honda Motor Co Ltd | Decompression device arrangement structure for engine |
JP2012002095A (en) * | 2010-06-15 | 2012-01-05 | Honda Motor Co Ltd | Variable valve system of internal combustion engine |
-
2013
- 2013-06-28 JP JP2013136582A patent/JP2015010553A/en not_active Withdrawn
- 2013-10-04 PH PH12013000299A patent/PH12013000299B1/en unknown
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- 2013-10-23 BR BR102013027312-0A patent/BR102013027312B1/en active IP Right Grant
- 2013-10-29 CO CO13256724A patent/CO7240097A1/en unknown
- 2013-10-31 ES ES13191025.9T patent/ES2614236T3/en active Active
- 2013-10-31 CN CN201310531152.XA patent/CN104251157B/en active Active
- 2013-10-31 EP EP13191025.9A patent/EP2821602B1/en active Active
Patent Citations (4)
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JPH0510162A (en) * | 1991-07-01 | 1993-01-19 | Honda Motor Co Ltd | Cycle suspension reciprocating type internal combustion engine |
JP2012036877A (en) * | 2010-08-11 | 2012-02-23 | Honda Motor Co Ltd | Variable valve mechanism |
JP2012077741A (en) * | 2010-09-07 | 2012-04-19 | Honda Motor Co Ltd | Variable valve system of internal combustion engine |
JP2013209893A (en) * | 2012-03-30 | 2013-10-10 | Honda Motor Co Ltd | Variable valve gear for internal combustion engine |
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TW201500638A (en) | 2015-01-01 |
EP2821602B1 (en) | 2017-01-18 |
EP2821602A2 (en) | 2015-01-07 |
CO7240097A1 (en) | 2015-04-17 |
PH12013000299A1 (en) | 2015-01-21 |
BR102013027312A2 (en) | 2015-09-01 |
BR102013027312B1 (en) | 2021-09-28 |
PH12013000299B1 (en) | 2015-01-21 |
CN104251157A (en) | 2014-12-31 |
JP2015010553A (en) | 2015-01-19 |
ES2614236T3 (en) | 2017-05-30 |
EP2821602A3 (en) | 2015-12-30 |
CN104251157B (en) | 2017-04-12 |
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