CN110374705A - A kind of engine variable camshaft - Google Patents
A kind of engine variable camshaft Download PDFInfo
- Publication number
- CN110374705A CN110374705A CN201910442408.7A CN201910442408A CN110374705A CN 110374705 A CN110374705 A CN 110374705A CN 201910442408 A CN201910442408 A CN 201910442408A CN 110374705 A CN110374705 A CN 110374705A
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- Prior art keywords
- transmission shaft
- wall
- engine
- cam
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
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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
- F01L1/04—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
Abstract
The present invention relates to technical field of engines, specifically a kind of engine variable camshaft, including transmission shaft, the equidistant spline being distributed in a ring is fixedly installed on the outer wall of the transmission shaft, and the outside of transmission shaft is socketed with slidable cam by spline, mounting groove is provided on the transmission shaft outer wall of the adjacent splined interior, and the inside of mounting groove is plugged with limit pin assemblies, the limit pin assemblies are located at the two sides of each cam.Beneficial effects of the present invention use the valve with oblique cone head, cooperate single cam structure, achieve the effect that the corresponding valve of each cam, solve the problems, such as that multiple cams are traditionally arranged on transmission shaft brings occupied space big, the use space of engine is greatly saved, pass through the transformation of cam position on transmission shaft, so that the contact head of cam is located at the different location on oblique cone head, to change the lift of valve, it realizes effective control to valve size, the loss of burning is greatly saved.
Description
Technical field
The present invention relates to technical field of engines, specifically a kind of engine variable camshaft.
Background technique
Variable Valve Timing Technique of IC Engine principle is the operating condition according to engine, adjust air inlet (exhaust) amount with
Valve opens and closes time, angle；Reach the air capacity entered most preferably, improves efficiency of combustion.Variable valve timing technology and variable
Valve stroke technology is all one of the control means of valve, and wherein variable valve timing system is now very widely used, but its
Using there is significant limitations.Variable valve timing system can only control valve opening earlier or a little later, and variable gas
Door actuating system is according to the difference of its structure, it can that realizes that valve is opened is big a little or a little bit smaller, and gas also may be implemented
The time that door is opened is long a little or shorter, cooperates in small lift with throttle opening, and pump gas damage can be greatly lowered
It loses, and engine output and air inflow can be reduced in time of engine low load, to reduce oil consumption.
Existing engine variable camshaft structure is complicated, needs to be arranged multiple cams to meet the use need of multiple valves
It asks, while the disadvantage that the transformation of cam position causes camshaft larger in in-engine occupied space, Chinese application number
CN201810626856.8 provides the variable cam that a kind of structure is simple, easy to process and the engine using the camshaft,
This starts function using camshaft to adjust valve stroke, to achieve the purpose that improve fuel economy and dynamic property.This hair
Bright variable cam is made of the main shaft of the hollow shaft of two sides and middle part, and the two sides of the main shaft extend into the hollow of respective side
In axis, and it is flexibly connected with the hollow shaft of respective side by spline fitted；The axle body of the main shaft is equipped at least two pairs
Answer the cam of different lifting curves；The hollow shaft of the main shaft and at least side, which is equipped with, to cooperate, so that main spindle's are fixed
Self-locking mechanism in predetermined position；The hollow shaft is equipped with blanking cover in one end far from main shaft, and the blanking cover is equipped with and is used for and liquid
The connected oil liquid duct of pressuring oil pipe.It is variable cam simple structure, convenient control of the invention, reliable, it can ensure that different cams
With the no-float of tappet, it is highly suitable to be applied for the adjusting of engine air valve lift.
Summary of the invention
The purpose of the present invention is to provide a kind of engine variable camshafts, to solve hair mentioned above in the background art
Structure is complicated for motivation variable cam, needs to be arranged multiple cams to meet the use demand of multiple valves, while cam position
The transformation problem that causes camshaft larger in in-engine occupied space.
The technical scheme is that a kind of engine variable camshaft, including transmission shaft, on the outer wall of the transmission shaft
It is fixedly installed the equidistant spline being distributed in a ring, and the outside of transmission shaft is socketed with slidable cam, phase by spline
It is provided with mounting groove on the transmission shaft outer wall of the adjacent splined interior, and the inside of mounting groove is plugged with limit pin assemblies, the limit
Position pin assemblies are located at the two sides of each cam, spring bearing are socketed on the outer wall of the both ends of the drive shaft, and prop up
The outside of support bearing is fixedly installed with the bearing block being fixed on vehicle frame, and one end outside the transmission shaft has been fixedly attached limit
Chuck, and transmission shaft is provided with keyway close to the outside of limit chuck, the keyway has been internally embedded flat key, and transmission shaft is outer
Portion is fixedly installed with gear by the cooperation of keyway and flat key, is provided with below the cam and is fixedly mounted on motor body
Internal engine valve is provided with the equidistant spline being distributed in a ring on the inner wall of the cam, and cam passes through spline
The outside for being fitted to transmission shaft of slot and spline, the engine valve include the fixation being fixedly mounted on the engine
Set, and tapered sleeve cylinder is welded on the outer wall of fixing sleeve bottom, it is fixedly installed with triple valve on the outer wall of the cone sleeve bottom end, institute
The inside for stating fixing sleeve, which is plugged with, to be penetrated through to the push rod inside triple valve, and oblique cone head is welded on the outer wall on push rod top, institute
The fuel oil spray head being fixedly installed inside cylinder block on the outer wall of triple valve bottom is stated, on the outer wall of the triple valve side
Fixation is communicated with petroleum pipeline.
Further, the transmission shaft uses hollow structure, and transmission shaft and spline are integrally formed and process structure.
Further, contact head, and the material of contact head are fixedly installed on outer wall of the cam far from transmission shaft one end
Material is chromium, and the surface of contact head uses heat treatment process.
Further, the limit pin assemblies include the retainer plate being fixedly plugged in inside mounting groove port, and retainer plate
Inside be plugged with slidable backing pin bar, fixing sleeve is connected to retaining ring on the outer wall of the backing pin bar, and retaining ring and retainer plate it
Between position be provided with the reset spring being socketed in outside backing pin bar, the outside of backing pin bar one end, which is socketed with, is fixed on transmission
Storage ring set on axis inner wall, backing pin bar are through to one end outside transmission shaft and are provided with press head.
Further, the combination that the plan view shape of the press head is square and semicircle forms, and backing pin bar
Structure is identical as the structure of press head, and backing pin bar is the cross directional stretch form of press head.
Further, be welded with the wearing plate on identical inclined-plane on the outer wall of the oblique cone overhead, and wearing plate with contact
Head is in contact, and the material of wearing plate and the material of contact head are identical.
Further, control valve is provided on the engine valve, and control valve is connected with fuel tank by petroleum pipeline, institute
The oil pump being connected with petroleum pipeline that is internally provided with of fuel tank is stated, the side of the petroleum pipeline is provided with the overflow valve being connected,
And overflow valve is connected to by petroleum pipeline with fuel tank, the petroleum pipeline is provided with the accumulator being connected close to the side of control valve,
Engine is connected with by petroleum pipeline on the control valve, and engine valve is mounted in the cylinder block of engine interior.
Further, the top inside triple valve is arranged in the control valve, and control valve and push rod are formed and be sequentially connected.
Further, the quantity of the cam and the quantity of engine valve are identical, and the stroke of push rod and cam rotate
Track be adapted.
Further, inclined-plane is used on the side outer wall of the spline, and is straight flange, straight flange on the other side outer wall of spline
Spline be located at the opposing face of transmission shaft direction of rotation.
The present invention provides a kind of engine variable camshaft by improving herein, compared with prior art, has and changes as follows
Into and advantage:
(1) present invention cooperates single cam structure using the valve for having oblique cone head, reaches the corresponding valve of each cam
Effect, solve the problems, such as that multiple cams are traditionally arranged on transmission shaft brings occupied space big, is greatly saved and starts
The use space of machine allows the element of engine interior preferably to configure installation, achievees the effect that people want.
(2) transformation for passing through cam position on transmission shaft, so that the contact head of cam is located at the different positions on oblique cone head
It sets, to change the lift of valve, realizes effective control to valve size, the loss of burning is greatly saved, more meets people
Demand in different driving environments.
(3) match a, the adjusting convenient for people to cam position by the spline of setting, spline and limit pin assemblies,
Great easy-to-use, structure novel is brought, design is reasonable, the popularization and use suitable for Modern Automobile Engine.
Detailed description of the invention
The present invention is further explained with reference to the accompanying drawings and examples:
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is cam and transmission shaft structure left view of the invention；
Fig. 3 is spacer pin component structure diagram of the invention；
Fig. 4 is engine valve structure schematic diagram of the invention；
Fig. 5 is oil path structure schematic diagram of the invention.
Description of symbols:
1 transmission shaft, 2 splines, 3 cams, 4 limit pin assemblies, 5 spring bearings, 6 bearing blocks, 7 limit chucks, 8 keyways, 9 flat keys,
10 gears, 11 engine valves, 12 splines, 13 contact heads, 14 storage ring sets, 15 retaining rings, 16 press heads, 17 backing pin bars, 18
Reset spring, 19 retainer plates, 20 oblique cone heads, 21 wearing plates, 22 push rods, 23 fixing sleeves, 24 tapered sleeve cylinders, 25 triple valves, 26 fuel oils
Spray head, 27 petroleum pipelines, 28 oil pumps, 29 fuel tanks, 30 relief valves, 31 check valves, 32 accumulators, 33 control valves, 34 engines.
Specific embodiment
Below in conjunction with attached drawing 1 to Fig. 5, the present invention is described in detail, technical solution in the embodiment of the present invention into
Row clearly and completely describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, shall fall within the protection scope of the present invention.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
The present invention provides a kind of engine variable camshaft by improving herein, as Figure 1-Figure 5, including transmission shaft 1,
The equidistant spline 2 being distributed in a ring is fixedly installed on the outer wall of transmission shaft 1, and the outside of transmission shaft 1 is socketed by spline 2
There is slidable cam 3, mounting groove is provided on 1 outer wall of transmission shaft inside adjacent spline 2, and the inside grafting of mounting groove is limited
Position pin assemblies 4 play the effect of limit to position of the cam 3 on transmission shaft 1, and it is convex that limit pin assemblies 4 are located at each
3 two sides are taken turns, are socketed with spring bearing 5 on the outer wall at 1 both ends of transmission shaft, and the outside of spring bearing 5 is fixedly installed with
6 bearing block 6 of bearing block on vehicle frame is scheduled on spring bearing 5 with, realizes and the fixed of transmission shaft 1 is supported, outside transmission shaft 1
The one end in portion has been fixedly attached limit chuck 7, and transmission shaft 1 is provided with keyway 8, the inside of keyway 8 close to the outside of limit chuck 7
It is embedded with flat key 9, and the outside of transmission shaft 1 is fixedly installed with gear 10 by the cooperation of keyway 8 and flat key 9, gear 10 can be with
With between transmission chain, when people trample throttle, it can be achieved that the rotation of transmission shaft 1, the lower section of cam 3 are provided with fixed installation
Engine valve 11 inside motor body is provided with the equidistant spline 12 being distributed in a ring on the inner wall of cam 3, and
Cam 3 passes through the outside for being fitted to transmission shaft 1 of spline 12 and spline 2, and engine valve 11 includes being fixedly mounted on
Fixing sleeve 23 on engine, and tapered sleeve cylinder 24 is welded on the outer wall of 23 bottom of fixing sleeve, on the outer wall of 24 bottom end of tapered sleeve cylinder
It is fixedly installed with triple valve 25, the inside of fixing sleeve 23, which is plugged with, to be penetrated through to the push rod 22 inside triple valve 25, and push rod 22 pushes up
Oblique cone head 20 is welded on the outer wall at end, the fuel oil spray being fixedly installed inside cylinder block on the outer wall of 25 bottom of triple valve
First 26, fuel oil is uniformly injected in the inside of engine cylinder block, facilitates the full combustion of fuel oil, 25 side of triple valve
Fixation is communicated with petroleum pipeline 27 on outer wall.
Further, transmission shaft 1 uses hollow structure, and transmission shaft 1 and spline 2 are integrally formed and process structure, hollow
The transmission shaft 1 of structure can reduce the self weight of integral cam shaft, and can achieve the effect that well to control valve.
Further, it is fixedly installed contact head 13 on outer wall of the cam 3 far from 1 one end of transmission shaft, and contact head 13
Material is chromium, and the surface of contact head 13 uses heat treatment process, improves the intensity on 13 surface of contact head, extend cam 3
Service life.
Further, limit pin assemblies 4 include being fixedly plugged in retainer plate 19 inside mounting groove port, and retainer plate 19
Inside be plugged with slidable backing pin bar 17, fixing sleeve is connected to retaining ring 15 on the outer wall of backing pin bar 17, and retaining ring 15 and fixed
Position between circle 19 is provided with the reset spring 18 being socketed in outside backing pin bar 17, and the outside of 17 one end of backing pin bar is socketed with solid
The storage ring set 14 being scheduled on 1 inner wall of transmission shaft, one end that backing pin bar 17 is through to outside transmission shaft 1 are provided with press head 16,
When driving a car in different environments, limit pin assemblies 4 can be adjusted in operator, be driven to change cam 3
Position on axis 1, and the length of push rod 22 is constant at this time, the contact head 13 of 3 end of cam is located at the oblique cone head 20 of different location
On, it realizes the adjusting to 22 stroke of push rod, reaches the adjusting to engine valve 11, wherein about the automatic tune to press head 16
Section, do not do in this application it is detailed repeat, be easily achieved the pressing to press head 16 by adding relevant transmission parts
Operation, can also manually press press head 16.
Further, the combination that the plan view shape of press head 16 is square and semicircle forms, and backing pin bar 17
Structure is identical as the structure of press head 16, and backing pin bar 17 is the cross directional stretch form of press head 16, square 17 He of backing pin bar
16 part of press head increases the area contacted with cam 3, realizes the preferably positioning to cam 3 on transmission shaft 1.
Further, be welded with the wearing plate 21 on identical inclined-plane on the outer wall at the top of oblique cone head 20, and wearing plate 21 with connect
Contact 13 is in contact, and the material of wearing plate 21 is identical as the material of contact head 13, equally improves the intensity of oblique cone head 20, extends
Service life.
Further, control valve 33 is provided on engine valve 11, and control valve 33 is connected with oil by petroleum pipeline 27
Case 29, fuel tank 29 are internally provided with the oil pump 28 being connected with petroleum pipeline 27, and oil pump 28 passes through the internal fuel of fuel tank 29
Petroleum pipeline 27 is transported to the inside of engine, and the side of petroleum pipeline 27 is provided with the overflow valve 30 being connected, and overflow valve 30 is logical
It crosses petroleum pipeline 27 to be connected to fuel tank 29, when the oil pressure inside petroleum pipeline 27 is higher, pressure release can be played the role of, to entire fuel feeding
The effect of protection is played on road, and petroleum pipeline 27 is provided with the accumulator 32 being connected close to the side of control valve 33, convenient for timely
Fuel feeding is carried out to engine, the reaction speed of engine is improved, passes through petroleum pipeline 27 on control valve 33 and be connected with engine 34,
And engine valve 11 is mounted in the cylinder block inside engine 34.
Further, the top inside triple valve 25 is arranged in control valve 33, and control valve 33 and push rod 22 are formed and be driven
Connection, the decline of push rod 22, triggering control valve 33 are opened, and the fuel oil inside petroleum pipeline 27 is smoothly transported to and is started
In cylinder block inside machine, cooperation piston makes engine do work outward.
Further, the quantity of cam 3 is identical as the quantity of engine valve 11, and the stroke of push rod 22 with 3 turns of cam
Dynamic track is adapted, and each cam 3 controls each engine valve 11, ensure that engine valve 11 open and
The stability of closing motion.
Further, inclined-plane is used on the side outer wall of spline 2, and is straight flange on the other side outer wall of spline 2, straight flange
Spline 2 is located at the opposing face of 1 direction of rotation of transmission shaft, and the spline 2 of straight flange is contacted with cam 3, when ensure that 3 rotary motion of cam
Rigidity, unlatching that can be more stable to engine valve 11.
The operation principle of the present invention is that: in use, operator is connect by chain with gear 10, operator is by trampling oil
Door forms the transmission of chain and gear, and transmission shaft 1 is driven to rotate, 3 synchronous rotary of cam outside transmission shaft 1,3 end of cam
Contact head 13 rotate to lower section when be in contact with the wearing plate 21 on oblique cone head 20, at this time push rod 22 decline, thus promotion three
Control valve 33 inside port valve 25 is opened, and allows oil pump 28 that the fuel oil inside fuel tank 29 is transported to engine air by petroleum pipeline 27
Adequately burning and acting are realized in the inside of cylinder body, can be good at that automobile is driven to travel on road surface, when in different environment
When lower driving, limit pin assemblies 4 can be adjusted in operator, thus change position of the cam 3 on transmission shaft 1, and
The length of push rod 22 is constant at this time, and the contact head 13 of 3 end of cam is located on the oblique cone head 20 of different location, realizes to push rod 22
The adjusting of stroke reaches the adjusting to engine valve 11, meets the use to drive a car under different situations, to greatly save
Amount of fuel.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of engine variable camshaft, it is characterised in that: fixed on the outer wall of the transmission shaft (1) including transmission shaft (1)
Be provided with the equidistant spline (2) being distributed in a ring, and the outside of transmission shaft (1) be socketed with by spline (2) it is slidable convex
It takes turns (3), is provided with mounting groove on internal transmission shaft (1) outer wall of the adjacent spline (2), and the inside of mounting groove is plugged with limit
Pin assemblies (4), limit pin assemblies (4) are located at the two sides of each cam (3), transmission shaft (1) both ends it is outer
It is socketed on wall spring bearing (5), and the outside of spring bearing (5) is fixedly installed with the bearing block (6) being fixed on vehicle frame,
The external one end of the transmission shaft (1) has been fixedly attached limit chuck (7), and transmission shaft (1) is close to the outside of limit chuck (7)
It is provided with keyway (8), the keyway (8) has been internally embedded flat key (9), and the outside of transmission shaft (1) passes through keyway (8) and flat key
(9) cooperation is fixedly installed with gear (10), is provided with and is fixedly mounted on inside motor body below the cam (3)
Engine valve (11) is provided with the equidistant spline (12) being distributed in a ring, and cam (3) on the inner wall of the cam (3)
By the outside for being fitted to transmission shaft (1) of spline (12) and spline (2), the engine valve (11) includes fixing
The fixing sleeve (23) of installation on the engine, and tapered sleeve cylinder (24), the tapered sleeve are welded on the outer wall of fixing sleeve (23) bottom
It is fixedly installed with triple valve (25) on the outer wall of cylinder (24) bottom end, the inside of the fixing sleeve (23) is plugged with perforation to triple valve
(25) internal push rod (22), and be welded with oblique cone head (20) on the outer wall on push rod (22) top, triple valve (25) bottom
Outer wall on be fixedly installed fuel oil spray head (26) inside cylinder block, it is fixed on the outer wall of triple valve (25) side
It is communicated with petroleum pipeline (27).
2. a kind of engine variable camshaft according to claim 1, it is characterised in that: the transmission shaft (1) is using empty
Core structure, and transmission shaft (1) and spline (2) are integrally formed and process structure.
3. a kind of engine variable camshaft according to claim 1, it is characterised in that: the cam (3) is far from transmission
It is fixedly installed contact head (13) on the outer wall of axis (1) one end, and the material of contact head (13) is chromium, the surface of contact head (13)
Using heat treatment process.
4. a kind of engine variable camshaft according to claim 1, it is characterised in that: limit pin assemblies (4) packet
The retainer plate (19) being fixedly plugged in inside mounting groove port is included, and the inside of retainer plate (19) is plugged with slidable backing pin bar
(17), fixing sleeve is connected to retaining ring (15) on the outer wall of the backing pin bar (17), and the position between retaining ring (15) and retainer plate (19)
It installs to be equipped with and is socketed in the external reset spring (18) of backing pin bar (17), the outside of described backing pin bar (17) one end is socketed with fixation
Storage ring set (14) on transmission shaft (1) inner wall, backing pin bar (17) are through to the external one end of transmission shaft (1) and are provided with pressing
Head (16).
5. a kind of engine variable camshaft according to claim 4, it is characterised in that: the vertical view of the press head (16)
Shape is square and the combination of semicircle composition, and the structure of backing pin bar (17) is identical as the structure of press head (16), gear
Pin rod (17) is the cross directional stretch form of press head (16).
6. a kind of engine variable camshaft according to claim 1, it is characterised in that: at the top of the oblique cone head (20)
The wearing plate (21) on identical inclined-plane is welded on outer wall, and wearing plate (21) is in contact with contact head (13), wearing plate (21)
Material is identical as the material of contact head (13).
7. a kind of engine variable camshaft according to claim 1, it is characterised in that: on the engine valve (11)
It is provided with control valve (33), and control valve (33) is connected with fuel tank (29) by petroleum pipeline (27), the inside of the fuel tank (29)
It is provided with the oil pump (28) being connected with petroleum pipeline (27), the side of the petroleum pipeline (27) is provided with the overflow valve being connected
(30), and overflow valve (30) is connected to by petroleum pipeline (27) with fuel tank (29), and the petroleum pipeline (27) is close to control valve (33)
Side is provided with the accumulator (32) being connected, and passes through petroleum pipeline (27) on the control valve (33) and is connected with engine (34),
And engine valve (11) is mounted in the internal cylinder block of engine (34).
8. a kind of engine variable camshaft according to claim 7, it is characterised in that: control valve (33) setting exists
The internal top of triple valve (25), and control valve (33) and push rod (22) form and are sequentially connected.
9. a kind of engine variable camshaft according to claim 1, it is characterised in that: the quantity of the cam (3) with
The quantity of engine valve (11) is identical, and the stroke of push rod (22) is adapted with the track that cam (3) rotates.
10. a kind of engine variable camshaft according to claim 1, it is characterised in that: outside the side of the spline (2)
Inclined-plane is used on wall, and is straight flange on the other side outer wall of spline (2), and the spline (2) of straight flange is located at transmission shaft (1) direction of rotation
Opposing face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910442408.7A CN110374705A (en) | 2019-05-25 | 2019-05-25 | A kind of engine variable camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910442408.7A CN110374705A (en) | 2019-05-25 | 2019-05-25 | A kind of engine variable camshaft |
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| Publication Number | Publication Date |
|---|---|
| CN110374705A true CN110374705A (en) | 2019-10-25 |
Family
ID=68248731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910442408.7A Pending CN110374705A (en) | 2019-05-25 | 2019-05-25 | A kind of engine variable camshaft |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4909197A (en) * | 1989-08-16 | 1990-03-20 | Cummins Engine Company, Inc. | Cam follower assembly with pinless roller |
| KR20080055396A (en) * | 2006-12-15 | 2008-06-19 | 현대자동차주식회사 | Variable valve lift system |
| CN103133207A (en) * | 2013-03-20 | 2013-06-05 | 广东石油化工学院 | Plunger type twice fuel injection pump |
| CN104373224A (en) * | 2013-08-13 | 2015-02-25 | 卡特彼勒发动机有限责任两合公司 | Operating internal combustion engines |
| CN108952868A (en) * | 2018-06-19 | 2018-12-07 | 奇瑞汽车股份有限公司 | A kind of variable cam and the engine using the camshaft |
-
2019
- 2019-05-25 CN CN201910442408.7A patent/CN110374705A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4909197A (en) * | 1989-08-16 | 1990-03-20 | Cummins Engine Company, Inc. | Cam follower assembly with pinless roller |
| KR20080055396A (en) * | 2006-12-15 | 2008-06-19 | 현대자동차주식회사 | Variable valve lift system |
| CN103133207A (en) * | 2013-03-20 | 2013-06-05 | 广东石油化工学院 | Plunger type twice fuel injection pump |
| CN104373224A (en) * | 2013-08-13 | 2015-02-25 | 卡特彼勒发动机有限责任两合公司 | Operating internal combustion engines |
| CN108952868A (en) * | 2018-06-19 | 2018-12-07 | 奇瑞汽车股份有限公司 | A kind of variable cam and the engine using the camshaft |
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Application publication date: 20191025 |
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