CN102797529B - Air inlet phase continuously adjustable device for single-cylinder and single-overhead-camshaft engine - Google Patents
Air inlet phase continuously adjustable device for single-cylinder and single-overhead-camshaft engine Download PDFInfo
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- CN102797529B CN102797529B CN201210305349.7A CN201210305349A CN102797529B CN 102797529 B CN102797529 B CN 102797529B CN 201210305349 A CN201210305349 A CN 201210305349A CN 102797529 B CN102797529 B CN 102797529B
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Abstract
The invention discloses an air inlet phase continuously adjustable device for a single-cylinder and single-overhead-camshaft engine. The air inlet phase continuously adjustable device comprises a cylinder cover (1), a phase adjuster assembly (2), an air exhaust camshaft (3) and an air inlet camshaft (4), wherein the right side of a chain wheel chamber (11) is provided with a camshaft support boss (12); the phase adjuster assembly (2) is arranged in the chain wheel chamber (11), and is supported through a first bearing seat (13); the air exhaust camshaft (3) and the air inlet camshaft (4) can rotate relatively; and the camshaft support boss (12) is provided with a first oil supply hole (16) and a second oil supply hole (17). The phase adjuster assembly is arranged in the space of the chain wheel chamber of the cylinder cover, so that the limit of the spatial structure of the cylinder cover when the phase adjuster assembly is arranged between air inlet and exhaust cams is avoided, and the arrangement of a vane type continuously variable air distribution mechanism can be realized under the condition of slightly changing the engine cylinder cover.
Description
Technical field
The present invention relates to the distribution device of motor, relate in particular to a kind of continuous adjusting device of air inlet phase for single cylinder single overhead cam shaft generator.
Background technique
At present, the multi-cylinder vehicle gasoline engine of lot of domestic and foreign Automobile Enterprises has adopted engine variable distribution timing mechanism (VVT more and more, Variable Valve Timing), multi-cylinder gasoline engine is installed variable valve timing system and can effectively be improved engine power, reduce oil consumption and discharge, is one of mainstream technology of current multi-cylinder gasoline engine.The mechanism that can realize variable valve timing has a lot, wherein especially with blade type continuous and variable gas distribution timing mechanism, be most widely used, many moneys motor of domestic many Automobile Enterprises has all been equipped with this technology, and other Automobile Enterprises are also competitively developing the variable distributing timing mechanism of oneself.
Blade type continuous and variable gas distribution timing mechanism, except obtained application widely on multicylinder engine, also has extraordinary application prospect on single-cylinder engine.But, on single-cylinder engine, apply this technology and mainly face following technical problem: the most Single Over Head Camshafts that adopt of single-cylinder engine, intake and exhaust cam is all loaded on the same axis, if carry out phase adjusted, just requires can relatively rotate between intake and exhaust cam.
The patent (ZL200920293902.3) of a kind of " a kind of air inlet phase continuous variable mechanism of single over head cam shaft of engine " by name is disclosed on China national patent website, this structure takes camshaft to be divided into two sections of inlet and outlet camshafts, phase regulator is arranged in to the middle scheme of inlet and outlet cam, can meets the requirement of mutually rotating between intake and exhaust cam.But for part Single Cylinder Gasoline Engine, air cylinder head structure is comparatively compact, has limited the layout of phase regulator, and conventionally need to carry out large change to cylinder head body structure could install additional smoothly, need to redesign for cylinder cover die mutually, increase die cost and design cycle; For the less cylinder head of some sizes, cannot install phase regulator assembly additional at all.On the contrary, at the indoor sprocket wheel of only having arranged of cylinder head sprocket wheel, space is relatively sufficient and be easy to expansion, so, phase regulator could be arranged in the sprocket wheel chamber of cylinder head, to solve the problem of phase regulator assembly difficult arrangement?
Summary of the invention
The present invention is directed in part single cylinder single overhead cam shaft generator and arrange that vane-type variable distribution timing mechanism Existential Space is limited, the problem of difficult arrangement, the continuous adjusting device of a kind of single cylinder Single Over Head Camshaft engine charge phase place has been proposed, this device can be realized the adjustable continuously of air inlet phase, and the layout of phase regulator assembly is carried out in the space that can rationally utilize cylinder head sprocket wheel chamber, while having avoided phase regulator assembly to be arranged between intake and exhaust cam, be subject to the problem of cylinder head spatial structure restriction, can less to engine cylinder cap change in the situation that, realize the layout of blade type continuous and variable gas distribution mechanism, to expand the application of VVT technology.
For this reason, the technical solution adopted in the present invention is: the continuous adjusting device of a kind of single cylinder Single Over Head Camshaft engine charge phase place, comprise cylinder head (1), phase regulator assembly (2), exhaust cam shaft (3) and admission cam shaft (4), key is:
Described cylinder head (1) comprises the die cavity (18) that is positioned at left side and the sprocket wheel chamber (11) that is positioned at right side, on the right side of described sprocket wheel chamber (11), be provided with camshaft support rim (12), on camshaft support rim (12), be provided with clutch shaft bearing seat (13), between described die cavity (18) and sprocket wheel chamber (11), be provided with the second bearing support (14), in the left side of described die cavity (18), be provided with the 3rd bearing support (15); Described phase regulator assembly (2) is comprised of shell (5), the timing sprocket (8) that is positioned at shell (5) left side, the impeller (6) that is positioned at the end cap (7) on shell (5) right side and is arranged on shell (5); Described exhaust cam shaft (3) is by from left to right exhaust cam (34), exhaust axle journal (32) and the flange plate (31) of coaxial setting form successively; Described admission cam shaft (4) is by from left to right air inlet axle journal (41), intake cam (42) and the coupling shaft (43) of coaxial setting form successively;
The flange plate (31) of described exhaust cam shaft (3) and timing sprocket (8), shell (5) and end cap (7) are fixedly connected into integral body by the first screw (10), and the second axle journal (72) by end cap (7) right side is supported on, and clutch shaft bearing seat (13) is gone up, the exhaust axle journal (32) by exhaust cam shaft (3) is supported on the second bearing support (14); The inside of described exhaust cam shaft (3) has and connects axis hole (35), the coupling shaft (43) of described admission cam shaft (4) is through connecting after axis hole (35) and timing sprocket (8), by the second screw (9) and impeller (6), be fixedly connected into integral body, and the air inlet axle journal (41) by admission cam shaft (4) is supported on the 3rd bearing support (15) the second axis hole (64) upper, by impeller (6) right side and is supported on the first axle journal (71) on the left of end cap (7); The diameter of described perforation axis hole (35), the upper Circularhole diameter passing through for coupling shaft (43) of timing sprocket (8) are greater than the diameter of coupling shaft (43), the left side of described impeller (6) and timing sprocket (8) are slidably matched, and the right side of impeller (6) and end cap (7) are slidably matched;
On the inner ring surface of described shell (5), be provided with projection (51), described impeller (6) is by axle journal (62) and be distributed in the outer blade (61) of axle journal (62) and form, , described blade (61) and projection (51) are arranged in a crossed manner, the inner ring surface Spielpassung of the end face of blade (61) and shell (5), axle journal (62) Spielpassung of the end face of projection (51) and impeller (6), thereby in the both sides of each blade (61), form the first oil pocket (21) and the second oil pocket (22), described the first oil pocket (21) communicates with the first oil supply hole (16) on camshaft support rim (12) by the first oil-way system, the second oil pocket (22) communicates with the second oil supply hole (17) on camshaft support rim (12) by the second oil-way system.
Working principle and process: the present invention is arranged on phase regulator assembly the sprocket wheel chamber of the cylinder head of single cylinder single overhead cam shaft generator, impeller and admission cam shaft are synchronized with the movement, exhaust cam shaft, timing sprocket, shell and end cap are synchronized with the movement, phase regulator assembly is poor by controlling the first oil pocket of blade both sides and the oil pressure of the second oil pocket, can make impeller drive admission cam shaft clockwise or rotate counterclockwise with respect to shell, thus the phase angle of adjustment intake cam.
In the time of need to shifting to an earlier date air inlet phase angle, machine oil enters the first oil pocket by the first oil-way system, the machine oil of the second oil pocket is by the second oil-way system oil return release, the first oil pocket oil pressure is higher than the second oil pocket, pressure oil promotes impeller and clockwise rotates, impeller drives admission cam shaft to clockwise rotate with respect to shell, realizes intake cam and rotates in advance; When needs lag behind air inlet phase angle, machine oil enters the second oil pocket by the second oil-way system, the machine oil of the first oil pocket is by the first oil-way system oil return release, the oil pressure of the second oil pocket is higher than the first oil pocket, pressure oil promotes impeller and rotates counterclockwise, impeller drives admission cam shaft to rotate counterclockwise with respect to shell, realizes intake cam hysteresis and rotates.As mentioned above, by shifting to an earlier date or the rotation that lags behind of impeller opposite shell, thereby realize the function that continuously changes air inlet phase angle.
As preferred version of the present invention, described the first oil-way system is by the 3rd annular groove (75) being successively set between the first oil supply hole (16) and the first oil pocket (21), the first oil duct (77), the first annular groove (73) and wedge shape oil groove (79) form, described the 3rd annular groove (75) is opened on the excircle of the second axle journal (72), the first annular groove (73) is opened the root in the first axle journal (71), the first oil duct (77) is for being communicated with the axial bore of the 3rd annular groove (75) and the first annular groove (73), wedge shape oil groove (79) is opened on the end face being slidably matched at end cap (7) and impeller (6), each the first oil pocket (21) correspondence is provided with a wedge shape oil groove (79),
Described the second oil-way system is by the Fourth Ring groove (76) being successively set between the second oil supply hole (17) and the second oil pocket (22), the second oil duct (78), combined circular groove, radial direction oil hole (67) forms, described Fourth Ring groove (76) is opened on the excircle of the second axle journal (72), combined circular groove forms by opening at the impeller annular groove (65) of the second axis hole (64) bottom surface of impeller (6) and the second annular groove (74) that correspondence is arranged on the first axle journal (71) front-end face, the second oil duct (78) is for being communicated with the axial bore of Fourth Ring groove (76) and combined circular groove, radial direction oil hole (67) is opened on impeller (6), each the second oil pocket (22) correspondence is provided with a radial direction oil hole (67).
The fuel feeding route of the first oil-way system is: the first oil supply hole → three annular groove → the first oil duct → the first annular groove → wedge shape oil groove → the first oil pocket; The fuel feeding route of the second oil-way system is: the second oil supply hole → the Fourth Ring groove → the second oil duct → combined circular groove → radial direction oil hole → the second oil pocket.The fuel feeding route of first, second oil-way system is not limited to above-mentioned form, so long as the first oil supply hole all can with the fuel feeding route that the first oil pocket, the second oil supply hole are communicated with the second oil pocket.
On one of them blade (61) of described impeller (6), be provided with the T shaped pin hole (68) that the large right-hand member of left end is little, on the end face that described end cap (7) and this blade (61) are slidably matched, be provided with key seat (710), return spring (23) and lock pin (20) are housed in described pin-and-hole (68), the left end of return spring (23) is against on timing sprocket (8), lock pin (20) is under the effect of return spring (23), through pin-and-hole (68), fall in key seat (710), key seat (710) bottom is communicated with wedge shape oil groove (79) by lock pin oil supply (711).When single overhead cam shaft generator quits work under certain operating mode, return spring promotes lock pin and inserts in lock, the shell of phase regulator assembly and impeller are fixed together, relatively rotating between limit shell and impeller, make the continuous adjusting device of whole cam axle engine air inlet phase become one, while preventing engine start, impeller and shell projection are clashed into and generation noise.When needs carry out phase adjusted, it by the first oil supply hole, is the first oil pocket fuel feeding of phase regulator assembly, increase the oil pressure of the first oil pocket, the meeting of the first oil pocket enters the bottom of key seat through lock pin oil supply, lock pin is applied to active force, when oil pressure acquires a certain degree, lock pin is ejected after key seat, shell and impeller just can relatively rotate, and carry out phase adjusted.
The left side of described impeller (6) is provided with the first axis hole (63), the coupling shaft (43) of admission cam shaft (4) stretches in the first axis hole (63) after connecting axis hole (35) and timing sprocket (8), and the second axis hole (64) bottom surface of impeller (6) is provided with the counter sink (66) sinking to for the second screw (9) termination.In the left side of impeller, increase by first axis hole that can stretch into for the coupling shaft of admission cam shaft, on the one hand admission cam shaft has been played to supporting effect, limited again on the other hand axial float between the two, guaranteed the reliability that the second screw connects.The second axis hole bottom surface at impeller arranges counter sink, avoids the termination of the second screw to be exposed at impeller outer, affects the layout of end cap.
Between the exhaust cam (34) of described exhaust cam shaft (3) and exhaust axle journal (32), be provided with position-arresting disk (33), position-arresting disk has further limited the axial float of the continuous adjusting device assembly of whole cam axle engine air inlet phase.
Be preferably, described blade (61) is identical with projection (51) quantity, is 4-6.
The invention has the beneficial effects as follows: the sprocket wheel chamber that phase regulator assembly is arranged in to single cylinder Single Over Head Camshaft engine cylinder cap, utilize dexterously cylinder head sprocket wheel chamber only to arrange the too abundant and relatively limited structure characteristic of cylinder head type cavity space of sprocket wheel time space, solved the problem of phase regulator assembly difficult arrangement; Adopt the through structure of intake and exhaust cam axle, compact overall structure can realize installing additional of the continuous adjusting device of phase place in the situation that not changing former machine cylinder head body structure simultaneously; Relatively common single overhead cam shaft generator, on right side, sprocket wheel chamber, increase camshaft support rim and be used for supporting phase regulator assembly, the integrated support rigidity of the continuous adjusting device of phase place is increased, when guaranteeing its reliable operation, be also convenient to the layout of outside oil feeding line.
This apparatus structure is simple, characteristics of compact layout, can be applied in easily in single cylinder single overhead cam shaft generator, very little to the change of former machine, low cost of manufacture.And, compare with the fixedly valve timing phase angle of conventional engines, the present invention can be in the whole condition range of motor, make valve timing phase angle in ideal position, thereby effectively improve power character, the fuel consumption and emission characteristic of motor when each operating mode, be adapted at take structural type extensive use on basic motor of single cylinder Single Over Head Camshaft.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the connection diagram of admission cam shaft, exhaust cam shaft and phase regulator assembly.
Fig. 4 is the structural representation that removes the phase regulator assembly of timing sprocket.
Fig. 5 is the structural representation that removes the phase regulator assembly of end cap.
Fig. 6 is the A-A sectional view of Fig. 4.
In figure:
1 cylinder head; 11 sprocket wheel chambers wherein, 12 camshaft support rims, 13 clutch shaft bearing seats, 14 second bearing supports, 15 the 3rd bearing supports, 16 first oil supply holes, 17 second oil supply holes, 18 die cavities;
2 phase regulator assemblies; 5 shells wherein, 6 impellers, 7 end caps, 8 timing sprockets;
3 exhaust cam shafts; 31 flange plate wherein, 32 exhaust axle journals, 33 position-arresting disks, 34 exhaust cams, 35 connect axis holes;
4 admission cam shafts; 41 air inlet axle journals wherein, 42 intake cams, 43 coupling shafts;
5 shells; 51 projections wherein;
6 impellers; 61 blades wherein, 62 axle journals, 63 first axis holes, 64 second axis holes, 65 impeller annular grooves, 66 counter sinks, 67 radial direction oil hole, 68 pin-and-holes;
7 end caps; 71 first axle journals wherein, 72 second axle journals, 73 first annular grooves, 74 second annular grooves, 75 the 3rd annular grooves, 76 Fourth Ring grooves, 77 first oil ducts, 78 second oil ducts, 79 wedge shape oil grooves, 710 locks, 711 lock pin oil supplys;
8 timing sprockets; 9 second screws; 10 first screws; 20 lock pins; 23 return springs.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
The continuous adjusting device of single cylinder Single Over Head Camshaft engine charge phase place as shown in Figure 1, Figure 3, is comprised of cylinder head 1, phase regulator assembly 2, exhaust cam shaft 3, admission cam shaft 4, the second screw 9 and the first screw 10 etc.Admission cam shaft 4 and exhaust cam shaft 3 coaxially arrange, one for air inlet, one for exhaust.
As Fig. 1, cylinder head 1 is comprised of with the sprocket wheel chamber 11 that is positioned at right side the die cavity 18 that is positioned at left side.Right side in described sprocket wheel chamber 11 is provided with camshaft support rim 12, and camshaft support rim 12 is extended to the right and formed by cylinder head 1 right-hand member.On camshaft support rim 12, be provided with clutch shaft bearing seat 13, between die cavity 18 and sprocket wheel chamber 11, be provided with the second bearing support 14, in the left side of die cavity 18, be provided with the 3rd bearing support 15.
As Fig. 3, the timing sprocket 8 of phase regulator assembly 2 is positioned at the left side of shell 5, right side, the impeller 6 that end cap 7 is positioned at shell 5 is positioned at the cavity that timing sprocket 8, shell 5 and end cap 7 surround.Exhaust cam shaft 3 is by from left to right exhaust cam 34, exhaust axle journal 32 and the flange plate 31 of coaxial setting form successively.Admission cam shaft 4 is by from left to right air inlet axle journal 41, intake cam 42 and the coupling shaft 43 of coaxial setting form successively.The first axle journal 71, second axis hole 64 on impeller 6 right sides, first axis hole 63 in impeller 6 left sides that the second axle journal 72 that the exhaust axle journal 32 of exhaust cam shaft 3, the air inlet axle journal 41 of admission cam shaft 4, end cap 7 right sides arrange, end cap 7 left sides arrange are all to arrange for needs are installed.
The flange plate 31 of exhaust cam shaft 3 is to arrange for connecting timing sprocket 8, shell 5 and end cap 7, and exhaust cam shaft 3 is fixedly connected into integral body by flange plate 31 and timing sprocket 8, shell 5 and end cap 7, is synchronized with the movement.Known in conjunction with Fig. 1, the exhaust cam shaft 3 being connected, timing sprocket 8, shell 5 and end cap 7 are supported on clutch shaft bearing seat 13 by second axle journal 72 on end cap 7 right sides, and the exhaust axle journal 32 by exhaust cam shaft 3 is supported on the second bearing support 14.
The inside of exhaust cam shaft 3 has and connects axis hole 35, and the coupling shaft 43 of admission cam shaft 4, through connecting after axis hole 35 and timing sprocket 8, is fixedly connected into integral body by the second screw 9 with impeller 6, is synchronized with the movement.Known in conjunction with Fig. 1, the admission cam shaft 4 being connected and the impeller 6 air inlet axle journal 41 by admission cam shaft 4 is supported on the 3rd bearing support 15, the second axis hole 64 by impeller 6 right sides is supported on first axle journal 71 in end cap 7 left sides.The Circularhole diameter passing through for coupling shaft 43 on the diameter of perforation axis hole 35, timing sprocket 8 is greater than the diameter of coupling shaft 43, the left side of impeller 6 and timing sprocket 8 are slidably matched, the right side of impeller 6 and end cap 7 are slidably matched, the left side of impeller 6 and timing sprocket 8 are slidably matched, and exhaust cam shaft 3, timing sprocket 8, shell 5 and end cap 7 rotate relatively under the drive of impeller 6 to make admission cam shaft 4.
As shown in Figure 4, Figure 5, shell 5 is ring, is provided with a plurality of projections 51 on the inner ring surface of shell 5, and impeller 6 is comprised of axle journal 62 and a plurality of blades 61 that are distributed in outside axle journal 62.The quantity of blade 61 and projection 51 is equal, and arranged in a crossed manner, and each blade 61 is between two adjacent projections 51, and each projection 51 is between two adjacent blades 61.The inner ring surface Spielpassung of the end face of blade 61 and shell 5, axle journal 62 Spielpassung of the end face of projection 51 and impeller 6, thereby in the both sides of each blade 61, form the first oil pocket 21 and the second oil pocket 22, the quantity of the first oil pocket 21, the second oil pocket 22 equates with the quantity of blade 61, projection 51, and blade 61 relatively projection 51 rotates.
In conjunction with Fig. 1, Fig. 2, on camshaft support rim 12, be provided with the first oil supply hole 16 and the second oil supply hole 17, the first oil pocket 21 communicates with the first oil supply hole 16 on camshaft support rim 12 by the first oil-way system, and the second oil pocket 22 communicates with the second oil supply hole 17 on camshaft support rim 12 by the second oil-way system.
In conjunction with Fig. 3---shown in Fig. 6, the first oil-way system consists of the 3rd annular groove 75, the first oil duct 77, the first annular groove 73 and the wedge shape oil groove 79 that are successively set between the first oil supply hole 16 and the first oil pocket 21.The 3rd annular groove 75 is opened on the excircle of the second axle journal 72, the first annular groove 73 is opened the root at the first axle journal 71, the first oil duct 77 is for being communicated with the axial bore of the 3rd annular groove 75 and the first annular groove 73, wedge shape oil groove 79 is opened on the end face being slidably matched at end cap 7 and impeller 6, and each first oil pocket 21 correspondence is provided with a wedge shape oil groove 79.The fuel feeding route of the first oil-way system is: first oil supply hole 16 → three annular groove 75 → the first oil duct 77 → the first annular groove 73 → wedge shape oil groove 79 → the first oil pockets 21.The first oil duct 77 is preferably two.
The second oil-way system consists of the Fourth Ring groove 76, the second oil duct 78, combined circular groove, the radial direction oil hole 67 that are successively set between the second oil supply hole 17 and the second oil pocket 22.Fourth Ring groove 76 is opened on the excircle of the second axle journal 72, and combined circular groove is comprised of impeller annular groove 65 and corresponding the second annular groove 74 being arranged on the first axle journal 71 front-end faces opened in the second axis hole 64 bottom surfaces of impeller 6.The second oil duct 78 is for being communicated with the axial bore of Fourth Ring groove 76 and combined circular groove, and radial direction oil hole 67 is opened on impeller 6, and each second oil pocket 22 correspondence is provided with a radial direction oil hole 67.The fuel feeding route of the second oil-way system is: second oil supply hole 17 → the Fourth Ring groove 76 → the second oil duct 78 → combined circular groove → radial direction oil hole 67 → the second oil pockets 22.The fuel feeding route of first, second oil-way system is not limited to above-mentioned form, so long as the first oil supply hole 16 all can with the fuel feeding route that the second oil pocket 22 is communicated with the first oil pocket 21, the second oil supply hole 17.
Shown in Fig. 4, Fig. 6, on one of them blade 61 of impeller 6, be provided with the T shaped pin hole 68 that the large right-hand member of left end is little, on the end face that end cap 7 and this blade 61 are slidably matched, be provided with key seat 710.Return spring 23 and lock pin 20 are housed in pin-and-hole 68, the left end of return spring 23 is against on timing sprocket 8, lock pin 20, under the effect of return spring 23, falls in key seat 710 through pin-and-hole 68, and key seat 710 bottoms are communicated with wedge shape oil groove 79 by lock pin oil supply 711.
As Fig. 3, the left side of impeller 6 is preferably provided with the first axis hole 63, and the coupling shaft 43 of admission cam shaft 4 stretches in the first axis hole 63 after connecting axis hole 35 and timing sprocket 8.The second axis hole 64 bottom surfaces of impeller 6 are provided with counter sink 66, the second screws 9 that sink to for the second screw 9 terminations and coaxially arrange with impeller 6, at the right-hand member of coupling shaft 43, are provided with the tapped hole being connected with the second screw 9.
In addition, as Fig. 3, between the exhaust cam 34 of exhaust cam shaft 3 and exhaust axle journal 32, be provided with position-arresting disk 33, to prevent from being arranged on phase regulator assembly 2, exhaust cam shaft 3 and admission cam shaft 4 axial runouts in cylinder head 1.Blade 61 is identical with projection 51 quantity, is preferably 4-6.
The present invention is like this work: when needs are during to the first oil pocket 21 fuel feeding, pressure oil flows into from the first oil supply hole 16, via the 3rd annular groove 75, the first oil duct 77, the first annular groove 73, then by each wedge shape oil groove 79, enters the first corresponding with it oil pocket 21 respectively; When needs are during to the second oil pocket 22 fuel feeding, pressure oil flows into from the second oil supply hole 17, via Fourth Ring groove 76,, the second oil duct 78, the second annular groove 74, then by each radial direction oil hole 67, enter the second oil pocket 22 respectively.The foregoing is only preferred embodiment of the present invention; do not using this as restriction of the present invention; all any modifications of doing within the spirit and principles in the present invention, be equal to replacement, simple combination and improvement etc., within protection scope of the present invention all should be included in.
Claims (6)
1. the continuous adjusting device of single cylinder Single Over Head Camshaft engine charge phase place, comprises cylinder head (1), phase regulator assembly (2), exhaust cam shaft (3) and admission cam shaft (4), it is characterized in that:
Described cylinder head (1) comprises the die cavity (18) that is positioned at left side and the sprocket wheel chamber (11) that is positioned at right side, on the right side of described sprocket wheel chamber (11), be provided with camshaft support rim (12), on camshaft support rim (12), be provided with clutch shaft bearing seat (13), between described die cavity (18) and sprocket wheel chamber (11), be provided with the second bearing support (14), in the left side of described die cavity (18), be provided with the 3rd bearing support (15); Described phase regulator assembly (2) is comprised of shell (5), the timing sprocket (8) that is positioned at shell (5) left side, the impeller (6) that is positioned at the end cap (7) on shell (5) right side and is arranged on shell (5); Described exhaust cam shaft (3) is by from left to right exhaust cam (34), exhaust axle journal (32) and the flange plate (31) of coaxial setting form successively; Described admission cam shaft (4) is by from left to right air inlet axle journal (41), intake cam (42) and the coupling shaft (43) of coaxial setting form successively;
The flange plate (31) of described exhaust cam shaft (3) and timing sprocket (8), shell (5) and end cap (7) are fixedly connected into integral body by the first screw (10), and the second axle journal (72) by end cap (7) right side is supported on, and clutch shaft bearing seat (13) is gone up, the exhaust axle journal (32) by exhaust cam shaft (3) is supported on the second bearing support (14); The inside of described exhaust cam shaft (3) has and connects axis hole (35), the coupling shaft (43) of described admission cam shaft (4) is through connecting after axis hole (35) and timing sprocket (8), by the second screw (9) and impeller (6), be fixedly connected into integral body, and the air inlet axle journal (41) by admission cam shaft (4) is supported on the 3rd bearing support (15) the second axis hole (64) upper, by impeller (6) right side and is supported on the first axle journal (71) on the left of end cap (7); The diameter of described perforation axis hole (35), the upper Circularhole diameter passing through for coupling shaft (43) of timing sprocket (8) are greater than the diameter of coupling shaft (43), the left side of described impeller (6) and timing sprocket (8) are slidably matched, and the right side of impeller (6) and end cap (7) are slidably matched;
On the inner ring surface of described shell (5), be provided with projection (51), described impeller (6) is by axle journal (62) and be distributed in the outer blade (61) of axle journal (62) and form, described blade (61) and projection (51) are arranged in a crossed manner, the inner ring surface Spielpassung of the end face of blade (61) and shell (5), axle journal (62) Spielpassung of the end face of projection (51) and impeller (6), thereby in the both sides of each blade (61), form the first oil pocket (21) and the second oil pocket (22), described the first oil pocket (21) communicates with the first oil supply hole (16) on camshaft support rim (12) by the first oil-way system, the second oil pocket (22) communicates with the second oil supply hole (17) on camshaft support rim (12) by the second oil-way system.
2. the continuous adjusting device of single cylinder Single Over Head Camshaft engine charge phase place according to claim 1, it is characterized in that: described the first oil-way system is by the 3rd annular groove (75) being successively set between the first oil supply hole (16) and the first oil pocket (21), the first oil duct (77), the first annular groove (73) and wedge shape oil groove (79) form, described the 3rd annular groove (75) is opened on the excircle of the second axle journal (72), the first annular groove (73) is opened the root in the first axle journal (71), the first oil duct (77) is for being communicated with the axial bore of the 3rd annular groove (75) and the first annular groove (73), wedge shape oil groove (79) is opened on the end face being slidably matched at end cap (7) and impeller (6), each the first oil pocket (21) correspondence is provided with a wedge shape oil groove (79),
Described the second oil-way system is by the Fourth Ring groove (76) being successively set between the second oil supply hole (17) and the second oil pocket (22), the second oil duct (78), combined circular groove, radial direction oil hole (67) forms, described Fourth Ring groove (76) is opened on the excircle of the second axle journal (72), combined circular groove forms by opening at the impeller annular groove (65) of the second axis hole (64) bottom surface of impeller (6) and the second annular groove (74) that correspondence is arranged on the first axle journal (71) front-end face, the second oil duct (78) is for being communicated with the axial bore of Fourth Ring groove (76) and combined circular groove, radial direction oil hole (67) is opened on impeller (6), each the second oil pocket (22) correspondence is provided with a radial direction oil hole (67).
3. the continuous adjusting device of single cylinder Single Over Head Camshaft engine charge phase place according to claim 1 and 2, it is characterized in that: on one of them blade (61) of described impeller (6), be provided with the T shaped pin hole (68) that the large right-hand member of left end is little, on the end face that described end cap (7) and this blade (61) are slidably matched, be provided with key seat (710), return spring (23) and lock pin (20) are housed in described pin-and-hole (68), the left end of return spring (23) is against on timing sprocket (8), lock pin (20) is under the effect of return spring (23), through pin-and-hole (68), fall in key seat (710), key seat (710) bottom is communicated with wedge shape oil groove (79) by lock pin oil supply (711).
4. the continuous adjusting device of single cylinder Single Over Head Camshaft engine charge phase place according to claim 3, it is characterized in that: the left side of described impeller (6) is provided with the first axis hole (63), the coupling shaft (43) of admission cam shaft (4) stretches in the first axis hole (63) after connecting axis hole (35) and timing sprocket (8), and the second axis hole (64) bottom surface of impeller (6) is provided with the counter sink (66) sinking to for the second screw (9) termination.
5. the continuous adjusting device of single cylinder Single Over Head Camshaft engine charge phase place according to claim 3, is characterized in that: between the exhaust cam (34) of described exhaust cam shaft (3) and exhaust axle journal (32), be provided with position-arresting disk (33).
6. the continuous adjusting device of single cylinder Single Over Head Camshaft engine charge phase place according to claim 1, is characterized in that: described blade (61) is identical with projection (51) quantity, is 4-6.
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| CN201210305349.7A CN102797529B (en) | 2012-08-24 | 2012-08-24 | Air inlet phase continuously adjustable device for single-cylinder and single-overhead-camshaft engine |
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| CN201210305349.7A CN102797529B (en) | 2012-08-24 | 2012-08-24 | Air inlet phase continuously adjustable device for single-cylinder and single-overhead-camshaft engine |
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| CN102797529A CN102797529A (en) | 2012-11-28 |
| CN102797529B true CN102797529B (en) | 2014-03-05 |
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| CN201210305349.7A Expired - Fee Related CN102797529B (en) | 2012-08-24 | 2012-08-24 | Air inlet phase continuously adjustable device for single-cylinder and single-overhead-camshaft engine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109869210B (en) * | 2017-12-01 | 2021-02-12 | 北汽福田汽车股份有限公司 | Camshaft end connecting device, camshaft, engine and vehicle |
| CN109899126A (en) * | 2017-12-11 | 2019-06-18 | 宝沃汽车（中国）有限公司 | A kind of engine and vehicle |
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