WO2006025174A1 - 可変バルブ駆動装置、エンジン及び自動二輪車 - Google Patents
可変バルブ駆動装置、エンジン及び自動二輪車 Download PDFInfo
- Publication number
- WO2006025174A1 WO2006025174A1 PCT/JP2005/014086 JP2005014086W WO2006025174A1 WO 2006025174 A1 WO2006025174 A1 WO 2006025174A1 JP 2005014086 W JP2005014086 W JP 2005014086W WO 2006025174 A1 WO2006025174 A1 WO 2006025174A1
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- Prior art keywords
- cam
- eccentric
- shaft
- rotation
- engine
- Prior art date
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/356—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear making the angular relationship oscillate, e.g. non-homokinetic drive
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/022—Chain drive
-
- 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
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/024—Belt drive
-
- 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
- F01L2001/0471—Assembled camshafts
- F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
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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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/032—Electric motors
Definitions
- the present invention relates to a variable valve drive device, an engine, and a motorcycle provided in an engine.
- a variable valve timing mechanism that changes the valve opening / closing timing in accordance with the engine speed is known as a method of changing the valve overlap according to the engine speed.
- a general variable valve timing mechanism for example, in a sprocket portion for cam driving linked to crank driving, a cam driving shaft portion linked to the crank shaft and a cam shaft in which the cam is provided in a body-like manner. And a part having a rotational phase difference in the part that drives the part.
- This type of variable valve timing mechanism has a structure in which the valve timing is changed without changing the cam working angle (Duration: "operating angle”). This can be achieved simply by changing the portion of the cam sprocket that is linked to the crankshaft without any major changes.
- the cam operating angle cannot be changed, so if a cam with a large operating angle is used to obtain high output, the flow rate of the air-fuel mixture flowing into the cylinder during low to medium speed rotation Decreases. Therefore, the air-fuel mixture is completely vaporized in the cylinder, resulting in a problem that high output cannot be realized.
- a coupling that causes an angular velocity fluctuation is disposed between the cam drive shaft portion and the cam shaft portion to thereby adjust the cam angle relative to the crank angle. It has been proposed to control the fluctuation by periodically changing the reduction ratio.
- a cam drive shaft that follows the rotation of a crank is inserted into a cam and a disc-shaped eccentric plate (eccentric member), and a pin provided on the cam drive shaft extends in the radial direction on the eccentric plate. It is loosely fitted in the groove.
- Patent Document 2 is known as having the same basic configuration as Patent Document 1.
- an eccentric plate is disposed between a sprocket that rotates by transmission of a crankshaft force driving force via a gear train and a camshaft provided integrally with the cam.
- the power is transmitted from the sprocket to the camshaft via the eccentric plate.
- variable valve timing mechanisms are mainly applied to a multi-cylinder engine of an automobile, and in a multi-cylinder engine, the periodic speed fluctuations of the cams in each cylinder must be shifted in different phases.
- An eccentric plate is provided for each cylinder.
- Patent Document 4 is known as another configuration of the variable valve timing mechanism.
- the cam drive shaft itself that drives the cam shaft integrated with the cam is eccentric with respect to the cam shaft by an eccentric mechanism.
- Patent Document 1 Japanese Patent Publication No. 47-020654
- Patent Document 2 JP-A-5-118208
- Patent Document 3 Japanese Patent Laid-Open No. 3-43611
- Patent Document 4 Japanese Examined Patent Publication No. 61-56408
- starters starter type vehicles
- the coupling for example, an eccentric plate
- the coupling is the same as the cam drive shaft. It is arranged between the drive part (cam sprocket) that rotates at the camshaft and the camshaft.
- the structure of the conventional non-variable conventional engine in which the cam drive member is located close to the cylinder shaft needs to be significantly changed.
- Cylinder head, crankshaft force Change main engine components such as parts that transmit drive force to cam drive shaft
- a sheave for CVT Continuous Variable Transmission
- a sheave for CVT Continuous Variable Transmission
- a part that takes a width such as a sheave is a rotating body (crank pulley) on which the cam drive chain is wound with respect to the cylinder position on the crank axis. , Timing gear, etc.).
- the engine itself has a structure that protrudes in the direction of the crankshaft as a whole compared to a structure that does not include a variable valve timing mechanism.
- a motorcycle equipped with an engine with a crankshaft facing in the width direction for example, a swing type drive unit
- the width of the crankcase becomes large, so that a sufficient bank angle cannot be obtained, and there is a problem that the motion characteristics of the vehicle deteriorate.
- the present invention has been made in view of the points to be worked on, and includes a variable valve driving device, an engine, and a motorcycle that can change the working angle of a cam with a simple configuration that greatly changes the engine configuration.
- the purpose is to provide.
- the variable valve drive device includes a cam drive member that is rotated by a drive force that is transmitted with a crankshaft force, and a shaft that is in the same direction as the rotation shaft of the cam drive member by driving the cam drive member. And an eccentric member provided so that the shaft is movable from an axial center position of the rotating shaft to an eccentric position, and is disposed coaxially with the rotating shaft, and is rotated about the rotating shaft by the eccentric member. When the eccentric member is driven to rotate at the eccentric position, the cam shaft rotates periodically at the same rotational phase as the cam shaft.
- FIG. 1 is an exploded perspective view of a main part of an engine provided with a variable valve driving apparatus according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of an essential part showing the variable valve driving device.
- FIG. 3 is an exploded perspective view of the variable valve drive device.
- FIG. 4 is a diagram showing a positional relationship among the rotation center of the eccentric boss, the axis of the variable cam drive shaft, and the axis of the eccentric plate.
- FIG. 5 is an exploded perspective view of an eccentric boss.
- FIG. 6 is a diagram showing an example of the positional relationship between the drive pin and the driven pin in a state where the center of the eccentric plate is eccentric with respect to the cam shaft in the variable valve drive device according to the embodiment of the present invention.
- FIG. 7 shows an example of a valve lift by a variable valve driving device according to an embodiment of the present invention.
- FIG. 8 is a diagram showing the flow of lubricating oil in the variable valve drive apparatus according to one embodiment of the present invention.
- FIG. 9 is a schematic cross-sectional side view showing a main part configuration of a motorcycle including the engine drive mechanism according to the embodiment of the present invention.
- FIG. 10 is a schematic plan view showing the main part of the drive unit of FIG.
- FIG. 1 is an exploded perspective view of a main part of an engine provided with a variable valve drive device according to an embodiment of the present invention.
- An engine 100 shown in FIG. 1 includes an engine main body 110 having a cylinder portion 106 and a cylinder head 104 that house a piston 102 so as to be able to advance and retreat, and a crankshaft 130 that is housed in a crankcase 112 (see FIG. 10). And a variable valve drive device 200.
- the engine 100 provides a periodic phase difference between the rotation of the exhaust cam piece 220 and the intake cam piece 240 by the variable valve drive device 200 disposed substantially parallel to the crankshaft 130, and each rotation The timing of opening and closing corresponding to is variable. As a result, the valve overlap time is variable corresponding to the engine speed.
- engine 100 will be described as a single cylinder SOHC (Single Over Head Camshaft) type mounted on starter type motorcycle 500 (see FIG. 9).
- the engine 100 can be described as a single-cylinder SOHC type engine, but is not limited to this, and any engine that has the variable valve drive 200 can be used! /.
- the piston 102 in the cylinder portion 106 is disposed so as to be movable back and forth (up and down) in the cylinder axial direction in the cylinder portion 106, and on the base end side of the piston 102, the connecting rod 10 It is connected to the crankshaft 130 via 8.
- the connecting rod 108 is rotatably attached to a crank pin (not shown) between the crank webs 132 provided on the crankshaft 130.
- crank web 132 (in detail, a crank journal) is provided on the crankshaft 130. Adjacent to this is a timing gear 134.
- a cam drive chain 133 as a drive force transmission member is wound around the timing gear 134.
- the cam drive chain 133, together with the timing gear 134, is wound around a cam sprocket 211 disposed in the cylinder head 104 of the engine main body 110, and the rotational driving force is applied to the cam pieces 220 and 240 of the variable valve drive device 200. To communicate.
- the transmission line of the cam drive chain 133 (in this embodiment, the chain line) is substantially perpendicular to the crankshaft 130, and is connected to the cylinder shaft of the cylinder portion 106 in which the piston 102 moves forward and backward. It is placed at a close position. This is because, due to the structure of the engine, the crank force that drives the piston 102 also prevents the bending force applied to the crank itself from increasing as the cam drive chain 133 is pulled away as the cam drive chain 133 is separated. .
- the cam drive chain 133 is arranged in a chain case portion 116 that is integrally provided adjacent to the cylinder portion 106 in the engine main body 110.
- An upper part 116a (hereinafter referred to as “case upper part”) 116a of the chain case part 116 is provided in the cylinder head 104, and the case upper part 116a is opened in the cylinder head 104 in a direction parallel to the crankshaft. Yes.
- One of the openings 116b communicates with the space above the cylinder 106, and an annular cylinder head cover (hereinafter referred to as “head cover”) 105 is attached to the other opening 116c.
- This annular head cover 105 is attached to the other opening 116c.
- variable valve drive device 200 is disposed at one end side thereof, and the variable valve drive device 200 is supported by the head cover 105 at one end portion side thereof.
- the variable valve drive device 200 includes a cam sprocket 211, an exhaust cam piece 220, a variable cam shaft 230, an intake cam piece 240, an eccentric plate 250, an eccentric boss 260, and an eccentric motor 270. It is mounted substantially parallel to the crankshaft 130.
- FIG. 2 is a cross-sectional view of the main part showing the variable valve driving device 200 attached to the cylinder head 104
- FIG. 3 is an exploded perspective view of the variable valve driving device 200.
- variable valve drive 200 In this variable valve drive 200, the rotation axes of the cam sprocket 211, the exhaust cam piece 220, the variable force shaft 230, the intake cam piece 240, the eccentric plate 250, and the eccentric boss 260 are parallel to each other. .
- the intake cam piece 240 and the exhaust cam piece 220 are placed in the cylinder head 104 with the variable cam shaft 230 being passed therethrough. It is arranged at the upper part of the cylinder part 106 in this. Further, the variable cam shaft 230 is passed through the force mus socket 211, and the cam sprocket 211 and the eccentric plate 250 are disposed in the case upper part 116a.
- the eccentric boss 260 is rotatably mounted in the annular head cover 105, and the variable valve drive device 200 is fixed to the cylinder head 104 by fixing the head cover 105 to the cylinder head 104. Has been.
- the cam sprocket 211 has the same axial center, and has an exhaust cam piece 220 and a cylindrical portion 224 that open and close to open and close a valve (here, an exhaust valve). Are formed integrally. That is, the cam sprocket 211, the cylindrical portion 224, and the exhaust cam piece 220 form a cam drive body 210 that directly receives the drive force of the crankshaft 130 and rotates.
- a valve here, an exhaust valve
- the cam sprocket 211 is driven by the drive of the crankshaft 130 via the timing gear 134 (see Fig. 1) and the cam drive chain 133 (see Fig. 1), and is decelerated at a constant speed with respect to the rotation speed of the crankshaft 130. Rotate by ratio.
- the cam sprocket 211 rotates at a speed of 1Z2 of the rotation of the crankshaft 130! /.
- the shaft centers of the cam sprocket 211 and the exhaust cam piece 220 are camshaft shaft centers, and the force shaft shaft is disposed substantially parallel to the crankshaft 130 (see FIG. 1) above the cylinder portion 106. ing.
- the cam sprocket 211 protrudes in a direction substantially parallel to the rotation axis direction of the cam sprocket 211 and on the opposite side with respect to the exhaust cam piece 220, A drive pin 212 for rotating the eccentric plate 250 is provided.
- the drive pin 212 is loosely fitted in a slot 252 cut out in the radial direction from the center side of the eccentric plate 250.
- the shaft center of the drive pin 212 is eccentric with respect to the shaft center of the cam sprocket 211.
- the drive pin 212 circulates around the shaft center of the cam sprocket 211 and passes through the slot 252.
- the eccentric plate 250 whose rotation axis is parallel is driven to rotate.
- this force Muspro The bracket 211 is provided with a protruding piece 114 protruding in the radial direction.
- the rotation position of the protruding piece 114 is detected by a sensor 114a attached to the cylinder head 104.
- the rotational position of the cam sprocket 211 is interlocked with the stroke of the crank. . That is, the rotation position includes information on the crank stroke (in the case of 4 cycles, the intake stroke, the compression stroke, the explosion stroke, and the exhaust stroke). Therefore, the crank stroke can be determined by detecting the position of the protrusion 114 of the cam sprocket 211 by the sensor 114a.
- a through hole 215 penetrating in the axial direction is formed in the same shaft center portion of each of the cam sprocket 211, the exhaust cam piece 220, and the cylindrical portion 224, that is, the shaft center portion of the cam driver 210. Is provided.
- the through hole 215 communicates with a hole 223 opened in the base circle surface of the exhaust cam piece 220 (see FIG. 2).
- the shaft portion 230a of the variable cam shaft 230 is passed through the through hole 215 so as to be rotatable in the axial direction.
- the shaft portion 230a of the variable cam shaft 230 protrudes on both sides in the axial direction from the cam drive body 210 to be passed through, and an intake cam adjacent to the exhaust cam piece 220 is provided on a portion protruding on the exhaust cam piece 220 side.
- a piece 240 is physically attached.
- variable cam shaft 230 has a cam sprocket 2 of the cam driver 210 at the shaft portion 230a.
- variable cam shaft 230 is disposed so as to cross over the cylinder portion 106 while being passed through the cam drive body 210.
- Bearing 104a and bearing 113 are variable camshafts 23
- variable cam shaft 230 has a through hole 238 that penetrates in the axial direction in the shaft portion 230a, and the through hole 238 is supplied to a sliding portion between members in the variable valve drive device 200.
- This is the main oil passage for the lubricant.
- the through hole 238 will be described as the main oil passage 238.
- This main oil passage 238 communicates with the outer peripheral surface of the shaft shaft 230a through branch oil passages 239a, 239b, and 239c. At the same time, it is opened to one end face side through a diaphragm 235 provided on the chain line side in the shaft portion 230a.
- the branched oil passages 239a, 239b, and 239c are formed in the shaft portion 230a so as to be orthogonal to the main oil passage 238, respectively, and open to the outer surface portion of the shaft portion 230a.
- Oil sump grooves 236, 237 formed in the shape of depressions in the circumferential direction of the shaft portion 230a are provided on the outer surface portions where the branch oil passages 239a, 239b open, and the branch oil passages 239a, 239b Daddy Groove 236, 237 [Communicate!
- branch oil passage 239c is formed in the shaft portion 230a so as to be orthogonal to the main oil passage 238, and is open to an outer surface portion communicating with the hole portion 245 of the intake cam piece 240.
- An oil sump groove 246 is formed along the inner peripheral surface of the opening portion of the intake cam piece 240 in a portion of the intake cam piece 240 that slides on the outer peripheral surface of the shaft portion 230a.
- variable cam shaft 230 One end of the variable cam shaft 230 is inserted into a bearing 113 attached to the cylinder head 104 in the cylinder head 104.
- the portion protruding from the bearing 113 is covered with an oil seal cap 115, and the oil seal portion 117 prevents the lubricating oil from leaking outside the cylinder head 104.
- an oil pump discharge port 118 is provided on one end 111 side of the cylinder head 104.
- the lubricating oil is press-fitted into the oil reservoir 119 communicating with the opening 230c at one end of the shaft portion 230a through the discharge port 118, and is guided into the main oil passage 238 through the oil reservoir 119.
- the intake cam piece 240 is externally fitted to one end side of the shaft portion 230a and fixed by fitting the pin 241 into a notch 243 (see FIG. 3) formed in the intake force piece 240. Has been.
- the intake cam piece 240 is disposed above the cylinder portion 106 together with the exhaust cam piece 220.
- the intake cam piece 240 rotates about the coaxial center.
- the intake cam piece 240 is formed with a hole 245 that passes through the base circle surface and the inner surface of the opening that is fitted around one end of the shaft portion 230a.
- the scissors 245 communicate with the main oil passage 238 in the shaft 230a.
- this main oil passage 238 is adjacent to the eccentric plate 250 on the other end side, and penetrates in the axial portion 230a of the variable cam shaft 230 to which the intake cam piece 240 is attached at one end portion in the axial direction. Is formed.
- the main oil passage 238 passes through the intake cam piece 240 and the intake cam piece 220 and also passes through the cam sprocket 211 adjacent to the exhaust cam piece 220 to reach the eccentric pre-place 250.
- the main oil passage 238 has a cam sprocket 211 from one end side in the variable cam shaft 230 on which the intake cam piece 240, the exhaust force piece piece 220, and the cam sprocket 211 are externally fitted. And the other end is opened through a diaphragm 235.
- the throttle 235 is arranged on the valve drive part (exhaust cam piece 220, intake cam piece 240) side and on the variable mechanism part side (eccentric plate 250, drive pin 212, driven pin 232, slots 252 and 254, etc.) side. Distribute lubricating oil optimally.
- the main oil passage 238 crosses the inside of the cylinder head 104 at the upper portion of the cylinder portion 106.
- the lubricating oil to which the one end side force of the shaft portion 230a is also supplied goes beyond the cam sprocket 211 directly driven by the crankshaft 130 to the eccentric plate 250 on the other end side of the shaft portion 230a via the throttle 235.
- a plate 234 is attached to the other end portion side of the shaft portion 230a so as to project in a direction substantially orthogonal to the shaft center of the shaft portion 230a.
- the plate 234 rotates at a position adjacent to the cam sprocket 211 as the shaft portion 230a rotates.
- the plate 234 protrudes in a direction opposite to the direction in which the shaft portion 230a extends to follow the driven pin 23.
- the follower pin 232 is parallel to the axis of the shaft portion 230a and is relative to the axis of the shaft portion 230a. It is located at an eccentric position and is disposed opposite to the drive pin 212 across the shaft portion 230a.
- the driven pin 232 loosely fits in the slot 254 in which the central force of the eccentric plate 250 is also cut out in the radial direction, and the rotation of the eccentric plate 250 causes the shaft portion 230a to rotate. Circulate around the axis.
- the intake cam piece is accompanied by the rotation of the variable cam shaft 230 driven by the rotation of the eccentric plate 250 via the driven pin 232. 240 also rotates.
- the eccentric plate 250 is provided with a plate shaft portion 258 at the center of the plate-like plate main body 256 disposed adjacent to the plate 234 of the variable cam shaft 230.
- the plate main body 256 includes a plate shaft A slot 252 and a slot 254 into which the drive pin 212 and the driven pin 232 are loosely fitted are formed on the same straight line with the portion 258 interposed therebetween.
- the plate shaft portion 258 is provided so as to be perpendicular to the plate body portion 256 and projecting from the opposite side of the plate 234, and is rotatably inserted into an eccentric hole 262 formed in the eccentric boss 260. It has been entered.
- the eccentric hole 262 is formed in the eccentric boss main body 264 that is arranged to rotate in the head cover 105 attached to the cylinder head 104 at a position eccentric to the rotation center R (see FIG. 3). Has been. Then, it is engaged with a worm gear 272 of an eccentric motor 270 attached to a rack 266 force head cover 105 provided on a part of the outer periphery of the eccentric boss main body 264. Therefore, by driving the eccentric motor 270, the position of the eccentric hole 262 can be moved to an eccentric position with respect to the rotation center R of the eccentric boss main body 264.
- FIG. 4 is a diagram showing the positional relationship between the rotation center R of the eccentric boss 260, the axis C of the variable cam shaft 230, and the axis E of the eccentric plate 250. As shown in FIG.
- the eccentric boss 260 is rotatably fitted in the head cover 105, and is centered on the rotation center (boss center) R by the eccentric motor 270 (see FIGS. 1 to 3). Rotate.
- the rotation center R is fixed on the engine side, and is the rotation center where the shaft center (eccentric center) E rotates with respect to the rotation axis C of the variable cam shaft 230, the exhaust cam piece 220, and the intake cam piece 240. ing.
- the plate shaft portion 258, that is, the axis of the eccentric plate 250 is provided in the eccentric hole 262 of the eccentric boss 260. Since E is rotatably inserted, rotation of the eccentric boss 260 causes the shaft center (eccentric center) E of the eccentric plate 250 to move in an arc shape around the rotation center (boss center) R. Further, the axis C of the variable cam shaft 230, that is, the axis C of the exhaust cam piece 220 and the intake cam piece 240, is arranged on the movement line of this axis (center of eccentricity) E.
- the shaft center E of the eccentric plate 250 is eccentric with the axis C of the variable cam shaft 230, and the exhaust cam piece integral with the cam sprocket 211 is obtained.
- a phase difference can be set in the rotation of the intake cam piece 240 integrated with the variable cam drive shaft.
- the rotational angle position of the eccentric boss 260 in the head cover 105 is detected by angle sensor units 26 and 27 provided on the eccentric boss 260 as shown in FIG.
- the eccentric position of the eccentric hole 262 is obtained using information detected in this way, information obtained from engine side forces such as engine rotation and engine load, and information obtained by inputting user force via an operation unit (not shown). It is controlled to a preset position by a control unit (not shown).
- FIG. 5 is an exploded perspective view of the eccentric boss.
- the eccentric boss main body 264 of the eccentric boss 260 has a bottomed cylindrical shape, and a lid 264b is attached to a main body case 264a in which an eccentric hole 262 is formed. Composed.
- the surrounding wall 262a is provided with a partition wall 265a, 265b, 265c [compartment compartments 267a, 267b, 267c].
- the bottom surface of the compartment 267a is provided with an air hole 268 that communicates the compartment 267 with the back side of the eccentric boss, that is, the eccentric plate 250 side.
- An oil return hole 268a that communicates with the outside of the eccentric boss main body 264 is formed in the peripheral wall of the compartment 267a.
- the partition walls 265a and 265b are provided with notches 269, and the compartments 267a and 267b and the compartments 267b and 267c communicate with each other! /.
- the lid 264b covers the compartments 267a, 267b, 267c.
- the lid 264b has an opening 264c formed in the ceiling portion of the compartment 267c.
- the eccentric boss 260 is configured to communicate with the axial direction, that is, the front and back surfaces via the air hole 268, the compartments 267a, 267b, 267c, the notch 269, and the opening 264c. Yes. That is, even if the eccentric boss 260 is attached to the cylinder head 104 via the head cover 105, the inside and outside of the head cylinder communicate with each other.
- an oil return hole 105 a is formed in the head cover 105 so as to be substantially parallel to the rotational axis of the eccentric boss 260.
- variable valve drive apparatus 200 in the present embodiment will be described.
- the cam sprocket 211 is driven by the rotation of the crankshaft 130 through the cam drive chain 133 at half the rotation of the crankshaft 130.
- the exhaust cam piece 220 provided integrally with the cam sprocket 211 via the cylindrical portion 224 rotates. That is, the exhaust cam piece 220 rotates in synchronization with the rotation of the crankshaft 130.
- the rotation of the cam sprocket 211 pushes the eccentric plate 250 around the plate shaft portion 258 via the drive pin 212 force slot 252 loosely fitted in the slot 252 of the eccentric plate 250, thereby causing the eccentricity.
- the center of rotation of the eccentric plate 250 that is, the position of the plate shaft portion 258 is decentered by driving the eccentric motor 270, so that even when the cam sprocket 211 is rotating at a constant speed, the eccentric plate 250 is unequal. It rotates at high speed.
- FIG. 6 is a diagram showing an example of the positional relationship between the drive pin and the driven pin in a state where the center of the eccentric plate is eccentric with respect to the camshaft in the variable valve driving device.
- Fig. 6 (a) to Fig. 6 (i) shows the relative positional relationship between the drive pin 212 and the driven pin 23 2 in a stepwise manner when the crankshaft is rotated at a predetermined rotation.
- the slots 252 and 254 in which the drive pin 212 and the driven pin 232 are loosely fitted are formed on the same straight line, and thus are shown as a rough weaving straight line SL.
- the slot 254 formed in the plate main body portion 256 of the eccentric plate 250 rotates at an unequal speed in the same manner as the eccentric plate 250. Since the driven pin 232 loosely fitted in the slot 254 is concentric with the cam sprocket 211 and the intake cam piece 240, an inconstant speed motion is transmitted to the driven pin 232 via the slot 254.
- the shaft portion 230a rotates at a non-uniform speed through the driven pin 232 to which the non-uniform speed motion is transmitted, and the intake cam piece 240 rotates at a non-uniform speed accordingly.
- the intake cam piece 240 is driven at an angular speed faster than half the rotational speed of the crankshaft 130 near the crank angle at which the intake cam piece 240 is open.
- an operating angle for example, 268 degrees
- the cam rotates more than the operating angle, so the intake valve is opened and closed in a shorter time. That is, the operating angle is narrowed.
- the intake cam rotates slowly, the operating angle can be widened.
- variable valve drive device 200 the intake cam rotated by the variable cam shaft 230 driven through the eccentric plate 250 with respect to the exhaust cam piece 220 provided integrally with the cam sprocket 211.
- the rotational phase difference of the piece 240 fluctuates periodically. That is, the operating angle of the intake cam piece 240 is periodically variable, in other words, the intake cam piece 240 rotates at an unequal speed,
- the operating angle and opening / closing timing of the intake valve (variable valve) that opens and closes by this rotation is variable.
- timing at which the intake cam piece 240 is rotated fast with respect to the exhaust cam piece 220 and at which timing the intake cam piece 240 is rotated slowly depends on the eccentric plate 250 center, the cam nose and each slot relative to the center of the cam sprocket 211. Determined by the positional relationship with 252 and 254.
- FIG. 7 is a diagram showing an example of a valve lift by the variable valve drive device according to one embodiment of the present invention.
- the lift amount of the intake valve is shown by lift curve K
- the lift amount of the exhaust valve is shown by lift curve ⁇ .
- the opening timing of the variable valve (here, the intake valve) is indicated by ⁇ , ⁇ 1, ⁇ 2, and the closing timing is indicated by ⁇ , ⁇ 1, ⁇ 2.
- FIG. 7 shows the working angle (Duration: also referred to as “operation angle”) D1, the valve overlap D2, and the maximum lift angles D3 and D4 of the intake cam piece.
- variable valve drive device 200 when the eccentric boss 260 rotates, the position of the eccentric hole 262, that is, the rotation center of the eccentric plate 250 is eccentric with respect to the cam shaft.
- the lift curve K is variable as shown in lift curve Kl, ⁇ 2.
- blowout can be prevented, hydrocarbons in the exhaust gas can be reduced, and engine output at low engine speed can be increased to improve fuel efficiency.
- the intake cam piece 240 is rotated so that the intake valve is fully closed when the piston 102 is located at the bottom dead center.
- variable valve drive device 200 the lubricating oil is efficiently supplied to the sliding portion of the member.
- Fig. 8 is a diagram showing a flow of lubricating oil in the variable valve drive apparatus 200 according to the embodiment of the present invention.
- Lubricating oil from the discharge port 118 flows into an oil reservoir 119 in an oil seal cap 115 disposed on one end 111 (end on the cylinder 106 side) of the sealed cylinder head 104 (FIG. 8). Arrow S1 direction).
- the inflowing lubricating oil flows into the main oil passage 238 in the shaft portion 230a from the opening 230c at one end of the rotating shaft portion 230a (in the direction of arrow S2 in FIG. 8).
- the lubricating oil that has flowed into the main oil passage 238 flows toward the chain line side of the shaft portion 230a.
- This lubricating oil passes through the branch oil passage 239c and flows out of the intake cam piece 240 through the hole 245 (in the direction of arrow S3 in FIG. 8), thereby reducing the friction at the sliding portion of the intake cam piece 240. .
- the lubricating oil in the main oil passage 238 flows into the oil sump groove 237 from the branch oil passage 239b and lubricates the sliding portion with the exhaust cam piece 220 (in the direction of arrow S4 in FIG. 8). Further, the lubricating oil from the branch oil passage 239c (in the direction of arrow S4 in FIG. 8) lubricates the base circle surface of the exhaust cam piece 220 from the hole 223. [0107] Further, the lubricating oil in the main oil passage 238 flows from the branch oil passage 239a into the oil sump groove 236, and lubricates the sliding portion between the cylindrical portion 224 and the bearing 104a provided in the cylinder head 104. (Arrow S5 direction in Fig. 8).
- the lubricating oil in the main oil passage 238 further flows to the chain line side of the shaft portion 230a, and the axial center partial force on the one end surface of the shaft portion 230a, specifically, the surface of the plate 234, also passes through the restriction 235. It flows out (see arrow S6 in Fig. 8).
- this plate 234 is disposed opposite to the eccentric plate 250 in the chain case portion 116 of the cylinder head 104, the lubricating oil from the main oil passage 238 slides with other members related to the eccentric plate 250.
- Lubricate moving parts For example, the lubricating oil discharged from the variable cam shaft 230 lubricates the sliding parts of the plate body 256 (slots 252 and 254), the drive pin 212 and the driven pin 23 2 (in the direction of arrows S7 and S8 in FIG. 8), etc. To do.
- the eccentric plate and the drive pin receive a surface pressure due to the driving force and are repeatedly subjected to cyclic sliding with each other.
- the drive pin is made of a hard steel material that has been heat-treated, and the eccentric plate is made of high alloy steel, pig iron, or an iron-based sintered alloy with excellent wear resistance. It is effective to apply a surface treatment for improving the hardness of the portion.
- the lubricating oil lubricates the sliding portion between the cam sprocket 211 and the cam drive chain 133 (see Fig. 1) (in the directions of arrows S9 and S10 in Fig. 8).
- variable valve driving device 200 configured as described above has an exhaust and intake cam piece 220, 240 on the cam axis as compared with a variable valve drive mechanism, that is, a cam shaft without a so-called variable bubble timing mechanism. And the positional relationship with the cam sprocket 211 does not change.
- variable valve drive device 200 can be mounted only by changing the camshaft portion to the variable valve drive device 200.
- variable valve drive device 200 In order to mount the variable valve drive device 200, the dimensions and arrangement positions of each member for driving the camshaft such as the crankshaft, the cylinder portion and cylinder head of the engine body, and the timing gear are specified. There is no change.
- intake cam piece 240 is periodic with respect to exhaust cam piece 220.
- the variable valve drive device 200 and the head cover 105 are removed from the engine body 110.
- a crankshaft having a cam sprocket, an exhaust cam piece, an intake cam piece, and the like that the variable mechanism portion such as the eccentric plate 250 has is inserted into the cylinder head, and a head cover formed corresponding to this crankshaft is attached.
- the motorcycle 500 including the variable valve driving device 200 can be easily changed to a motorcycle without the variable valve driving device 200.
- the vehicle on which engine 100 is mounted is described as a starter-type motorcycle.
- the present invention is not limited to this, and any vehicle on which engine 100 is mounted may be used.
- Fig. 9 is a schematic side view showing a configuration of a main part of the motorcycle including the variable valve drive device for an engine according to the embodiment of the present invention.
- front, rear, left, and right mean front, rear, left, and right when viewed in a seated state on the motorcycle seat.
- the motorcycle according to the present embodiment is not limited to the force described as a starter type motorcycle, and may be any vehicle as long as the vehicle has a valve drive device.
- a motorcycle 500 shown in FIG. 9 is a tandem starter type, and includes a tandem seat 504 on the rear side of a vehicle main body 503 that rotatably supports a handle 502 on the front side.
- the tandem seat 504 is attached to the trunk space 505 disposed at the lower part so as to be freely opened and closed.
- a drive unit 600 is disposed below the trunk space 505.
- the front end portion of the drive unit 600 is a pivot shaft (not shown) horizontally disposed in the vehicle width direction at the rear end portion of the front main body 503a extending from the lower side of the handle 502 to the lower side of the tandem seat 504. ) And can be swung up and down.
- FIG. 10 is a schematic plan view showing the main part of the drive unit of FIG.
- the engine 100 is mounted on the front side of the vehicle.
- the driving force of engine 100 is applied to axle 510 arranged at the rear end of drive unit 600, C
- the rear wheel 508 is rotated by rotating via the VT mechanism 610.
- the engine 100 is positioned at a substantially central portion in the vehicle front-rear direction below the trunk space 505 with the axis of the cylinder 106 substantially horizontal and the crankshaft 130 substantially parallel to the vehicle width direction. ing.
- a CVT mechanism 610 extending rearward of the vehicle is disposed at the other end of the crankshaft 130, here, at the left end of the vehicle.
- the binding mechanism 610 is arranged substantially parallel to the cylinder shaft, and includes a pulley 611 attached to the crankshaft 130, a pulley 612 attached to the axle 510, and a benolet 613 spanned between the pulleys 611 and 612. And a centrifugal clutch 61 4.
- Centrifugal clutch 614 is attached to axle 510.
- a deceleration gear 615 is attached to the axle 510, and the driving force of the crankshaft 130 transmitted through the pulley 611 and the belt 613 is decelerated.
- Engine 100 of the present embodiment is provided between cam drive body 210 corresponding to the cam drive shaft in the conventional engine configuration and exhaust and intake cam pieces 220, 240 disposed on the upper portion of cylinder portion 106. Does not arrange the eccentric plate 250 corresponding to the eccentric member.
- eccentric plate 250 and exhaust and intake cam pieces 220, 240 are arranged on the cam axis with cam drive body 210 interposed therebetween.
- the eccentric plate 250 and the exhaust and intake cam pieces 220 and 240 are arranged on the cam axis with the cam sprocket 211 arranged on the chain line of the cam drive chain 133 interposed therebetween.
- Exhaust and intake cam pieces 220 and 240 are arranged above the cylinder portion 106 along the cylinder axis CL due to the engine structure. Unlike the conventional configuration, the exhaust and intake cam pieces 220 and 240 differ from the conventional configuration. The lines are arranged at adjacent positions.
- the chain line L of the engine 100 has a conventional configuration in which an eccentric member is disposed between the cam sprocket 211 and the exhaust and intake cam pieces 220 and 240. Compared to the chain line LA, it is arranged closer to the cylinder axis CL.
- the belt 613 line of the CVT mechanism 610 disposed substantially parallel to the chain line L outside the chain line L is closer to the cylinder axis CL than in the conventional structure.
- the lateral width of the drive unit 600 itself is reduced.
- the left end surface 600a is closer to the right side than the left side surface 600b when the engine equipped with the conventional variable valve drive device is mounted, as the chain line L approaches the cylinder axis CL. Approach the side.
- starter type motorcycle 500 is structurally provided with components provided on the outer side of cam drive chain 133 on the crankshaft, such as a sheave for CVT (Continuously Variable Transmission).
- CVT Continuous Variable Transmission
- the motorcycle 500 has the same crankcase 112 width as the structure without the variable valve timing mechanism.
- the eccentric mechanism portion such as the eccentric plate 250 is disposed between the exhaust and intake cam pieces 220, 240 and the cam sprocket 211!
- variable valve drive device 200 is provided by simply removing the variable valve drive device 200 from the cylinder head 104 of the engine body 110 and changing the eccentric plate 250, the variable cam shaft 230, the eccentric boss 260, and the head cover 105. It can be used as an engine.
- the overlap period can be varied with a simple configuration.
- the cam operating angle can be varied with a simple configuration without significantly changing the engine configuration, thereby realizing high response and low fuel consumption in the engine. Monkey.
- the engine 100 is a single cylinder SOHC (Single Over Head Camshaft) type of power. Not limited to this, the multi-cylinder SOHC type and DOHC (Double Over Head Camshaft) are also applicable. It is.
- SOHC Single Over Head Camshaft
- DOHC Double Over Head Camshaft
- variable valve drive device 200 the rotational phase difference of the intake cam piece 240 is periodically changed with respect to the exhaust cam piece 220 that varies the operating angle of the intake valve.
- the rotational phase difference of the exhaust cam piece 220 may be periodically changed with respect to the intake cam piece 240.
- the variable valve driving device 200 is provided with an intake cam piece for driving the intake valve by rotating integrally with the cam sprocket 211, and an exhaust cam piece for driving the exhaust valve on the variable cam shaft 230. It is set as the structure which provided. With this configuration, it is possible to change the overlap by changing the working angle of the exhaust valve.
- the variable valve drive apparatus includes a drive transmitted from the crankshaft.
- the cam drive member that rotates by force and the drive of the cam drive member rotate about an axis in the same direction as the rotation axis of the cam drive member, and the shaft is at the center of the rotation shaft.
- An eccentric member provided so as to be movable, and is disposed coaxially with the rotation shaft, and is driven to rotate about the rotation shaft by the eccentric member, and when the eccentric member is rotationally driven at the eccentric position,
- the cam piece that rotates at the same rotational phase as the cam shaft is driven by the rotational phase difference with respect to the cam drive member being periodically changed, that is, the operating angle of the cam piece is variable, whereby the exhaust valve Alternatively, the intake valve is driven, and the operating angle of the exhaust valve or the intake valve is variable.
- the valve overlap is variable.
- valve opens and closes early, and the overlap is reduced or eliminated, reducing residual gas (combustion gas) contamination and stabilizing gas combustion. To do.
- the eccentric member is not disposed between the cam drive member and the cam piece, and the positional relationship between the exhaust or intake valve and the cam drive member is the same as that in the conventional engine.
- the present variable valve drive device can be mounted on a conventional engine without drastically changing the engine configuration.
- the main engine components can be shared between an engine with a variable valve mechanism and an engine without a variable valve mechanism.
- this variable valve drive unit is installed in an engine without a variable valve mechanism mounted on a motorcycle, there is no need to change other engine components such as cylinders and crankshafts. Can be reduced.
- variable valve driving device in the configuration described above, the member movement is performed to move the shaft of the eccentric member to a coaxial positional force eccentric position with respect to the rotation shaft of the cam driving member
- the structure which has a part is taken.
- the cam driving member is interposed via the member moving portion.
- the operating angle of the exhaust or intake valve can be varied by periodically varying the rotational phase difference between the cam frame and the cam piece.
- the variable valve drive device according to the third aspect of the present invention is rotated at the same rotational phase as the cam drive member by the cam drive member, and is disposed at a position adjacent to the cam piece. A configuration having another cam piece is employed.
- one of the cam piece and the other cam piece is an intake cam piece that drives the intake valve
- the other can be an exhaust cam piece that drives an exhaust valve.
- the cam piece drives an intake valve by rotation
- the another cam piece drives an exhaust valve by rotation. take.
- the cam piece drives an exhaust valve by rotation
- the another cam piece drives an intake valve by rotation. take.
- a variable valve drive apparatus is disposed on a cam drive member that rotates by a drive force transmitted from a crankshaft, and on one end side of the cam drive member in the rotation axis direction, An axis in the same direction as the rotation axis of the cam drive member by driving the cam drive member And an eccentric member provided such that the shaft is movable to an eccentric position of the rotating shaft, and is arranged coaxially with the rotating shaft, and the eccentric member is centered on the rotating shaft. And a cam shaft in which a rotational phase difference with respect to the cam drive member periodically varies when the eccentric member is rotationally driven at the eccentric position, and other directions in the rotation axis direction of the cam drive member.
- the first valve drive cam piece that is disposed on the end side is rotated at the same rotational phase as the cam shaft, and does not change the operating angle, and is disposed adjacent to the first valve drive cam piece.
- a second valve driving cam piece with a variable operating angle is provided such that the shaft is movable to an eccentric position of the rotating shaft
- variable valve driving device since no other member is interposed between the two valve driving cam pieces, the variable valve driving device can be configured extremely compactly.
- An engine according to a seventh aspect of the present invention is centered on an axis in the same direction as the rotation axis of the cam drive member by rotating the cam drive member rotated by the driving force transmitted with the crankshaft force and driving the cam drive member.
- an eccentric member provided so that the axial force of the rotating shaft can be moved to an eccentric position, and coaxial with the rotating shaft.
- the eccentric member rotates about the rotating shaft.
- a variable valve drive device disposed on the other end side, wherein the crankshaft is disposed substantially parallel to a rotation shaft of the cam drive member, and the cam drive member is substantially perpendicular to the crankshaft.
- a configuration is adopted in which the crankshaft rotates in conjunction with a driving force transmission unit disposed in the cylinder.
- the eccentric member that improves the engine performance without changing the displacement is
- the exhaust drive or intake valve is not disposed between the cam drive member and the cam piece and has the same positional relationship as that of the conventional engine and the cam drive member. For this reason, the variable valve drive can be installed without significantly changing the conventional engine configuration. In other words, the engine with variable valve mechanism and the engine without variable valve mechanism A common engine component can be used. Therefore, there is no variable valve mechanism mounted on a motorcycle, and when an engine is mounted with a variable valve drive device, other than cylinders, crankshafts, etc.
- An engine includes a cam drive member that is rotated by a drive force transmitted by a crankshaft force, and one end side in the rotation shaft direction of the cam drive member, and the force drive
- An eccentric member that rotates about an axis in the same direction as the rotation axis of the cam drive member by driving the member, and the axis is provided such that an axial center position force of the rotation axis can be moved to an eccentric position; It is arranged coaxially with the rotation shaft, and is rotationally driven around the rotation shaft by the eccentric member, and when the eccentric member is rotationally driven at the eccentric position, the rotational phase difference with respect to the cam drive member is periodic.
- a first camshaft for driving the valve which is disposed on the other end side in the rotation axis direction of the cam drive member, is rotated at the same rotation phase as the camshaft, and has a variable operating angle.
- This first cam A variable valve drive device which is arranged adjacent to the piece and has a second valve drive cam piece having a variable operating angle, wherein the crankshaft rotates the cam drive member. Arranged substantially parallel to the axis,
- the cam driving member is interlocked with the rotation of the crankshaft via a driving force transmitting portion disposed in a direction substantially orthogonal to the crankshaft. According to this configuration, since no other member is interposed between the two valve driving cam pieces in the variable valve driving device, the engine can be configured extremely compactly.
- the engine according to the ninth aspect of the present invention employs a configuration that is a single cylinder engine in the above configuration.
- variable bubble driving device in a single cylinder, can open and close the nozzle corresponding to engine rotation at low speed and high speed.
- the motorcycle according to the tenth aspect of the present invention employs a configuration in which the engine force having the above-described configuration is mounted with the crankshaft arranged in the vehicle width direction.
- the crankshaft width does not increase.
- the drive force transmission line to the crankshaft cam drive member is also separated from the cylinder axial force at which the cam piece is arranged. It will be.
- transmission means for transmitting the driving force from the crankshaft to the axle is provided outside the driving force transmission line, the transmission means does not protrude outward and the width of the engine itself is increased.
- a decrease in corners can be prevented, and a decrease in vehicle performance can be prevented.
- variable valve drive device, engine, and motorcycle according to the present invention are useful as having an effect of making the working angle of the cam variable with a simple configuration without drastically changing the engine configuration.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/574,299 US20080308053A1 (en) | 2004-08-31 | 2005-08-02 | Variable Valve Drive Device, Engine, and Motorcycle |
EP05768346A EP1788200A1 (en) | 2004-08-31 | 2005-08-02 | Variable valve drive device, engine, and motorcycle |
JP2006531476A JPWO2006025174A1 (ja) | 2004-08-31 | 2005-08-02 | 可変バルブ駆動装置、エンジン及び自動二輪車 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-253621 | 2004-08-31 | ||
JP2004253621 | 2004-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006025174A1 true WO2006025174A1 (ja) | 2006-03-09 |
Family
ID=35999835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/014086 WO2006025174A1 (ja) | 2004-08-31 | 2005-08-02 | 可変バルブ駆動装置、エンジン及び自動二輪車 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080308053A1 (ja) |
EP (1) | EP1788200A1 (ja) |
JP (1) | JPWO2006025174A1 (ja) |
TW (1) | TW200617264A (ja) |
WO (1) | WO2006025174A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010113279A1 (ja) * | 2009-03-31 | 2010-10-07 | 日鍛バルブ株式会社 | エンジンの位相可変装置 |
JP2012233426A (ja) * | 2011-04-28 | 2012-11-29 | Toyota Motor Corp | 動弁装置、及びエンジン |
KR20180016540A (ko) * | 2015-06-08 | 2018-02-14 | 르노 에스.아.에스. | 캠샤프트에 윤활제를 공급하기 위한 장치 |
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GB2457228A (en) * | 2008-02-05 | 2009-08-12 | Mechadyne Plc | Lubricating oil feed arrangement for a single cam phaser (SCP) camshaft |
GB2467333A (en) * | 2009-01-30 | 2010-08-04 | Mechadyne Plc | Single camshaft phaser and camshaft for i.c. engines |
US8613267B1 (en) | 2011-07-19 | 2013-12-24 | Lightsail Energy, Inc. | Valve |
CN102797529B (zh) * | 2012-08-24 | 2014-03-05 | 重庆大学 | 单缸单顶置凸轮轴发动机进气相位连续可调装置 |
KR102394575B1 (ko) | 2017-11-20 | 2022-05-04 | 현대자동차 주식회사 | 연속 가변 밸브 듀레이션 장치 및 이를 포함하는 엔진 |
US10415488B2 (en) | 2015-12-09 | 2019-09-17 | Hyundai Motor Company | System and method for controlling valve timing of continuous variable valve duration engine |
US10393037B2 (en) | 2015-12-09 | 2019-08-27 | Hyundai Motor Company | Method for controlling of valve timing of continuous variable valve duration engine |
US10415485B2 (en) | 2015-12-10 | 2019-09-17 | Hyundai Motor Company | Method for controlling of valve timing of continuous variable valve duration engine |
US10428747B2 (en) * | 2015-12-11 | 2019-10-01 | Hyundai Motor Company | System and method for controlling valve timing of continuous variable valve duration engine |
KR101776743B1 (ko) | 2015-12-11 | 2017-09-08 | 현대자동차 주식회사 | 연속 가변 밸브 듀레이션 엔진의 밸브 타이밍 제어 시스템 및 방법 |
US10323585B2 (en) | 2015-12-11 | 2019-06-18 | Hyundai Motor Company | Method for controlling of valve timing of continuous variable valve duration engine |
US10634067B2 (en) | 2015-12-11 | 2020-04-28 | Hyundai Motor Company | System and method for controlling valve timing of continuous variable valve duration engine |
KR101807023B1 (ko) | 2015-12-11 | 2017-12-08 | 현대자동차 주식회사 | 연속 가변 밸브 듀레이션 엔진의 밸브 타이밍 제어 시스템 및 방법 |
US10920679B2 (en) | 2015-12-11 | 2021-02-16 | Hyundai Motor Company | Method for controlling of valve timing of continuous variable valve duration engine |
US10634066B2 (en) | 2016-03-16 | 2020-04-28 | Hyundai Motor Company | System and method for controlling valve timing of continuous variable valve duration engine |
CN106523728B (zh) * | 2016-11-21 | 2023-10-10 | 扬中市阀门厂有限公司 | 一种新型高效旋转分配阀门 |
KR102417382B1 (ko) * | 2016-12-14 | 2022-07-06 | 현대자동차주식회사 | 가변 밸브 타이밍 기구 및 가변 밸브 듀레이션 기구를 이용한 밸브 타이밍 및 밸브 듀레이션 제어 방법 |
KR102439627B1 (ko) * | 2017-12-12 | 2022-09-05 | 현대자동차주식회사 | 엔진의 가변 밸브 장치 |
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- 2005-08-02 WO PCT/JP2005/014086 patent/WO2006025174A1/ja active Application Filing
- 2005-08-02 JP JP2006531476A patent/JPWO2006025174A1/ja not_active Withdrawn
- 2005-08-02 US US11/574,299 patent/US20080308053A1/en not_active Abandoned
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010113279A1 (ja) * | 2009-03-31 | 2010-10-07 | 日鍛バルブ株式会社 | エンジンの位相可変装置 |
JP5255114B2 (ja) * | 2009-03-31 | 2013-08-07 | 日鍛バルブ株式会社 | エンジンの位相可変装置 |
US8522736B2 (en) | 2009-03-31 | 2013-09-03 | Nittan Valve Co., Ltd. | Phase variable device for engine |
JP2012233426A (ja) * | 2011-04-28 | 2012-11-29 | Toyota Motor Corp | 動弁装置、及びエンジン |
KR20180016540A (ko) * | 2015-06-08 | 2018-02-14 | 르노 에스.아.에스. | 캠샤프트에 윤활제를 공급하기 위한 장치 |
JP2018524506A (ja) * | 2015-06-08 | 2018-08-30 | ルノー エス.ア.エス.Renault S.A.S. | カムシャフトに潤滑剤を供給する装置 |
KR102516048B1 (ko) | 2015-06-08 | 2023-03-30 | 르노 에스.아.에스. | 캠샤프트에 윤활제를 공급하기 위한 장치 |
Also Published As
Publication number | Publication date |
---|---|
US20080308053A1 (en) | 2008-12-18 |
JPWO2006025174A1 (ja) | 2008-05-08 |
TWI295706B (ja) | 2008-04-11 |
EP1788200A1 (en) | 2007-05-23 |
TW200617264A (en) | 2006-06-01 |
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