CN208268328U - Engine timing chain apparatus - Google Patents
Engine timing chain apparatus Download PDFInfo
- Publication number
- CN208268328U CN208268328U CN201820479350.4U CN201820479350U CN208268328U CN 208268328 U CN208268328 U CN 208268328U CN 201820479350 U CN201820479350 U CN 201820479350U CN 208268328 U CN208268328 U CN 208268328U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil circuit
- piston
- chain
- stretcher
- Prior art date
- 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.)
- Active
Links
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model discloses a kind of engine timing chain apparatus, including the crankshaft sprocket (1) being mounted on crankshaft, the dmission cam shaft sprocket wheel (2) and exhaust cam shaft sprocket wheel (3) being mounted on camshaft, around the chain (4) of three sprocket wheels setting, chain tensioning mechanism on chain (4) is set, the chain tensioning mechanism includes the first movable guiding rail (5) being located between crankshaft sprocket (1) and dmission cam shaft sprocket wheel (2), the second movable guiding rail (6) being located between crankshaft sprocket (1) and exhaust cam shaft sprocket wheel (3), stretcher (7), the stretcher (7) includes shell (7.1), the first piston (7.2) to offset with the first movable guiding rail (5), the second piston (7.3) to offset with the second movable guiding rail (6), it is located at oneself in shell (7.1) It is dynamic to adjust oil circuit (7.4).The utility model provides a kind of can automatically adjust to balance the chain tension at the guide rail of both sides and the engine timing chain apparatus without externally supplying oil pressure.
Description
Technical field
The utility model relates to technical field of automobile engine, in particular to a kind of engine timing chain apparatus.
Background technique
Engine timing chain system includes a fixed guide rail and a dynamic guide rail at present, and stretcher is arranged on dynamic guide rail,
When chain wear elongation or when chain tension reduces, tensioner piston forward extends out under the action of oil pressure of lubricating system, top
Dynamic guide rail swing chain tension, compensate the elongation of chain；Tensioner piston is moved when chain tension is excessive inwardly to return
It moves back, reduces the tensioning of the chain power, so that chain be made to remain in certain tension range.But dynamic guide rail is only adjusted when adjusting
The chain at end can not be adjusted in the tension of the chain of fixed rail-sides, and fix that rail-sides chain tension is excessive to will affect chain
Service life, tension is too small that chain can be made to skid and influence the transmission performance of chain.
Summary of the invention
The technical problem to be solved by the utility model is to provide one kind can automatically adjust to balance at the guide rail of both sides
Chain tension and the engine timing chain apparatus without externally supplying oil pressure.
The technical scheme in the invention for solving the above technical problem are as follows: a kind of engine timing chain apparatus, including peace
Crankshaft sprocket on crankshaft, the dmission cam shaft sprocket wheel being mounted on camshaft and exhaust cam shaft sprocket wheel, around described
The chain of three sprocket wheels setting, the chain tensioning mechanism being arranged on chain, the chain tensioning mechanism include being located at crankshaft chain
It is living to take turns the first movable guiding rail between dmission cam shaft sprocket wheel, second be located between crankshaft sprocket and exhaust cam shaft sprocket wheel
Dynamic guide rail, stretcher, the stretcher include shell, the first piston to offset with the first movable guiding rail and the second movable guiding rail
The second piston that offsets is located at the intracorporal automatic adjustment oil circuit of shell, and the automatic adjustment oil circuit is used to retract first piston
Pressure in tight device is converted into the thrust for making second piston stretch out stretcher or second piston is retracted the pressure in stretcher
It is converted into the thrust for making first piston stretch out stretcher.
Compared with the prior art, the advantages of the utility model are: the guide rail of chain two sides is disposed as movable guiding rail,
And when the first movable guiding rail side chain tension it is excessive, simultaneously influence the second movable guiding rail side chain, lead to its tensile force
When too small, the first movable guiding rail pushes first piston to retract in stretcher, then is stretched out second piston by automatic adjustment oil circuit
Stretcher pushes the second movable guiding rail to be tensioned the chain of the second movable guiding rail side；When the chain of the first movable guiding rail side
Tensile force is too small, influences the chain of the second movable guiding rail side simultaneously, and when causing its tensile force excessive, the second movable guiding rail pushes the
Two pistons retract in stretcher, then first piston is stretched out stretcher by automatic adjustment oil circuit, push the first movable guiding rail pair
The chain of first movable guiding rail side is tensioned, and generates linkage to the first movable guiding rail and the second movable guiding rail by stretcher,
To automatically adjust and balance the tensioning of the chain power of two movable guiding rail sides.
As a kind of improvement of the utility model, the automatic adjustment oil circuit includes being located in the shell for first piston
Mobile the first oil pocket, for the second mobile oil pocket of second piston, the first oil pocket of connection and the second oil pocket two connection oil circuits,
The first check valve and second one-way valve being respectively provided on two connection oil circuits, the dynamic direction of the first check valve fuel feeding liquid stream
It is limited to uniaxially flow to the second oil pocket from the first oil pocket, the dynamic direction of the second one-way valve fuel feeding liquid stream is limited to be only capable of
The first oil pocket uniaxially is flowed to from the second oil pocket, by the improvement, in two connection oil circuits, the oil of the first check valve is set
Road limits oil liquid and is only capable of flowing to the second oil pocket from the first oil pocket, and the oil circuit that second one-way valve is arranged limits oil liquid and is only capable of from second
Oil pocket flows to the first oil pocket, therefore when the chain tension of the first movable guiding rail side becomes larger, push first piston to retract tensioning
Device, the first oil pocket inner fluid pressure become larger, and flow to the second oil pocket by the first check valve, the second oil pocket pushes second piston to stretch
Stretcher out, so that the chain tension of the second movable guiding rail side be made to become larger；When the chain tension of the second movable guiding rail side becomes
When big, second piston is pushed to retract stretcher, the second oil pocket inner fluid pressure becomes larger, and flows to the first oil by second one-way valve
Chamber, the first oil pocket pushes first piston to stretch out stretcher, so that the chain tension of the first movable guiding rail side be made to become larger.
As a kind of also improvement of the utility model, passes through pressure stabilizing oil communication between two connection oil circuits, lead to
The improvement is crossed, the oil pressure balance of two connection oil circuits is made by pressure stabilizing oil circuit, is controlled by check valve and oil circuit, makes system
It can be adaptively adjusted, guarantee that system is in tensioning state.
As the utility model there are also a kind of improvement, the connection oil circuit of the automatic adjustment oil circuit passes through machine in engine
Oil pump carries out pressurization or pressure release to oil liquid, by the improvement, in the prior art, by in-engine lubricating oil pump to stretcher
Fuel feeding or draining are carried out, therefore fuel feeding can also be carried out using automatic adjustment oil circuit of the lubricating oil pump to the utility model, to improve certainly
The dynamic oil pressure adjusted in oil circuit, so that two pistons push movable guiding rail to be tensioned chain；Also or reduce automatic adjust
Oil pressure in fuel-economizing road reduces the tensioning of the chain power so that two pistons retract in stretcher.
As a kind of also improvement of the utility model, the automatic adjustment oil circuit further includes accumulation of energy branch, the accumulation of energy
Branch includes energy storage chamber, the energy storage piston being located in energy storage chamber, connection energy storage chamber and the accumulation of energy oil circuit, the control accumulation of energy that are connected to oil circuit
Oil circuit and the control valve for being connected to oil circuit on-off, by the improvement, accumulation of energy branch can be carried out the oil liquid of automatic adjustment oil circuit
Supplement opens control valve and carries out pressure release to automatic adjustment oil circuit when the tensioning of the chain power of two movable guiding rail sides is excessive,
Oil liquid in automatic adjustment oil circuit enters energy storage chamber, so that two pistons be made to retract in a certain amount to stretcher, reduces two
Thrust of a movable guiding rail to chain；When the tensioning of the chain power of two movable guiding rail sides is too small, control valve is opened to certainly
The dynamic oil circuit that adjusts is pressurized, and the oil liquid in energy storage chamber, which enters in automatic adjustment oil circuit, to be pressurized, to keep two pistons equal
Certain displacement is stretched out from stretcher, and two movable guiding rails is pushed to be tensioned chain.
As the utility model there are also a kind of improvement, the accumulation of energy oil circuit includes the first branch and second branch, described
Control valve includes the 4th check valve for setting third check valve on the first leg, being located in second branch, and the third is unidirectional
Valve is only capable of flowing to connection oil circuit from energy storage chamber for limiting oil liquid, and the 4th check valve is only capable of for limiting oil liquid from connection
Oil circuit flows to energy storage chamber, and by the improvement, set third check valve goes out oil pressure, thus at the fuel-displaced place of third check valve
The too small i.e. connection oil circuit of pressure at pressure it is too small, when chain tension is inadequate, oil liquid is made to flow to connection oil from energy storage chamber
Road sets the input pressure of the 4th check valve, thus the pressure at the excessive i.e. connection oil circuit of the pressure at the 4th check valve oil inlet
When power is excessive, chain tension is excessive, oil liquid is made to flow to energy storage chamber storage by the 4th check valve from connection oil circuit.
As the utility model there are also a kind of improvement, the first piston passes through the first spring and the first oil pocket elasticity phase
It supports, the second piston is offseted by second spring and the second oil pocket elasticity, by the improvement, the first spring and second spring
For the resilient support of mechanical structure formula, for assisting oil liquid to flexibly support two pistons.
As the utility model there are also a kind of improvement, the energy storage piston passes through energy-storaging spring and energy storage chamber elasticity phase
It supports, by the improvement, energy-storaging spring can convert oil liquid pressure to the elastic potential energy storage of spring.
Detailed description of the invention
Fig. 1 is the utility model overall structure stereoscopic schematic diagram.
Fig. 2 is structural upright schematic diagram at the utility model stretcher.
Fig. 3 is oil liquid flow direction schematic diagram when chain tension is excessive at the first movable guiding rail of the utility model.
Fig. 4 is oil liquid flow direction schematic diagram when chain tension is excessive at the second movable guiding rail of the utility model.
Fig. 5 is oil liquid flow direction schematic diagram when the utility model accumulation of energy branch pressurizes to connection oil circuit oil pressure.
Fig. 6 is the utility model accumulation of energy branch to oil liquid flow direction schematic diagram when being connected to the pressure release of oil circuit oil pressure.
1- crankshaft sprocket, 2- dmission cam shaft sprocket wheel, 3- exhaust cam shaft sprocket wheel, 4- chain, the first movable guiding rail of 5-, 6-
Second movable guiding rail, 7- stretcher, 7.1- shell, 7.2- first piston, 7.3- second piston, 7.4- automatically adjust oil circuit,
7.4.1- the first oil pocket, the second oil pocket of 7.4.2-, 7.4.3- are connected to oil circuit, and the first check valve of 7.4.4-, 7.4.5- second is unidirectionally
Valve, 7.4.6- pressure stabilizing oil circuit, 7.4.7- energy storage chamber, 7.4.8- energy storage piston, the 7.4.9- first branch, 7.4.10- second branch,
7.4.11- third check valve, the 4th check valve of 7.4.12-, 7.4.13- energy-storaging spring, the first spring of 7.5-, the second bullet of 7.6-
Spring.
Specific embodiment
The embodiments of the present invention are further described with reference to the accompanying drawing.
As shown in Figs. 1-2,
A kind of engine timing chain apparatus, including the crankshaft sprocket 1 being mounted on crankshaft, the air inlet being mounted on camshaft
Camshaft sprocket 2 and exhaust cam shaft sprocket wheel 3, the chain 4 around the setting of three sprocket wheels, the chain tension that is arranged on chain 4
Mechanism, chain tensioning mechanism include the first movable guiding rail 5 being located between crankshaft sprocket 1 and dmission cam shaft sprocket wheel 2, are located at song
The second movable guiding rail 6 between axis sprocket wheel 1 and exhaust cam shaft sprocket wheel 3 is located at the first movable guiding rail 5 and the second movable guiding rail 6
Between stretcher 7, the first movable guiding rail 5 and the second movable guiding rail 6 be each provided at the outside of chain 4, and stretcher 7 includes shell
7.1, the first piston 7.2 that offsets with the first movable guiding rail 5, is located at shell at the second piston 7.3 to offset with the second movable guiding rail 6
Automatic adjustment oil circuit 7.4 in body 7.1, automatic adjustment oil circuit 7.4 are used to retracting first piston 7.2 into the pressure in stretcher 7
The pressure for being converted into the thrust for making second piston 7.3 stretch out stretcher 7 or retracting second piston 7.3 in stretcher 7 converts
To make first piston 7.2 stretch out the thrust of stretcher 7, one end of the two movable guiding rails and casing of engine is hinged, the other end
It offsets respectively with two pistons.
Wherein, two pistons can be opposite in diagram and be coaxially arranged, can also opposite and setting in a certain angle.
Wherein, automatic adjustment oil circuit 7.4 includes being located in shell 7.1 for the first oil pocket of the movement of first piston 7.2
7.4.1, for the second mobile oil pocket 7.4.2 of second piston 7.3, connect two of the first oil pocket 7.4.1 and the second oil pocket 7.4.2
Connection oil circuit 7.4.3, the first check valve 7.4.4 and second one-way valve 7.4.5 being respectively provided on two connection oil circuit 7.4.3,
The dynamic direction of first check valve 7.4.4 fuel feeding liquid stream is limited to uniaxially flow to the second oil pocket from the first oil pocket 7.4.1
7.4.2, the dynamic direction of second one-way valve 7.4.5 fuel feeding liquid stream is limited to be only capable of uniaxially to flow to the from the second oil pocket 7.4.2
One oil pocket 7.4.1.
Wherein, it is connected between two connection oil circuit 7.4.3 by pressure stabilizing oil circuit 7.4.6.
Wherein, automatic adjustment oil circuit 7.4 further includes accumulation of energy branch, and accumulation of energy branch includes energy storage chamber 7.4.7, is located at energy storage chamber
7.4.7 in energy storage piston 7.4.8, connection energy storage chamber 7.4.7 be connected to oil circuit 7.4.3 accumulation of energy oil circuit, control accumulation of energy oil circuit
With the control valve for being connected to oil circuit 7.4.3 on-off.
Wherein, accumulation of energy oil circuit includes first branch 7.4.9 and second branch 7.4.10, and control valve includes being located at the first branch
7.4.9 third check valve 7.4.11 on, the 4th check valve 7.4.12 being located on second branch 7.4.10, third check valve
7.4.11 it is only capable of flowing to connection oil circuit 7.4.3, the 4th check valve 7.4.12 from energy storage chamber 7.4.7 for limiting for limiting oil liquid
Stand oil liquid is only capable of flowing to energy storage chamber 7.4.7 from connection oil circuit 7.4.3.
Wherein, first piston 7.2 is offseted by the first spring 7.5 and the first oil pocket 7.4.1 elasticity, and second piston 7.3 is logical
Second spring 7.6 is crossed to offset with the second oil pocket 7.4.2 elasticity.
Wherein, energy storage piston 7.4.8 is offseted by energy-storaging spring 7.4.13 and energy storage chamber 7.4.7 elasticity.
Wherein, the arrow in Fig. 3 is that oil liquid flows when 4 tensile force of chain is excessive at the first movable guiding rail of the utility model 5
Direction when 4 tensile force of chain at the first movable guiding rail 5 is excessive, pushes first piston 7.2 to retract the shell 7.1 of stretcher 7
Interior, the oil liquid in the first oil pocket 7.4.1 enters connection oil circuit 7.4.3 by the first check valve 7.4.4, then flows to second again
Oil pocket 7.4.2 pushes second piston 7.3 to release.
Wherein, the arrow in Fig. 4 is that oil liquid flows when 4 tensile force of chain is excessive at the second movable guiding rail of the utility model 6
Direction when 4 tensile force of chain at the second movable guiding rail 6 is excessive, pushes second piston 7.3 to contract as shown in arrow direction in figure
It returns in the shell 7.1 of stretcher 7, the oil liquid in the second oil pocket 7.4.2 enters connection oil circuit by second one-way valve 7.4.5
7.4.3, the first oil pocket 7.4.1 is then flowed to again, and first piston 7.2 is pushed to release.
Wherein, in the prior art, the check valve being arranged in oil circuit all has certain unlatching threshold values, and chain shakes when running
The raw thrust to piston of movable property, and the variation of the thrust is no more than the unlatching threshold values of check valve, check valve is not turned on, thus can be with
Chain vibration bring tension variation is filtered, and the first check valve 7.4.4 and second one-way valve 7.4.5 in the utility model are also
Certain threshold values can be set, to filter the tensile force variation of chain vibration generation.
Wherein, the arrow in Fig. 5 is that oil liquid flows when the utility model accumulation of energy branch pressurizes to connection oil circuit 7.4.3 oil pressure
Direction, when oil pressure is too small in connection oil circuit 7.4.3, oil liquid is unidirectional by third from energy storage chamber 7.4.7 when 4 tensile force of chain is inadequate
Valve 7.4.11 flows to connection oil circuit 7.4.3, can set third check valve 7.4.11 and open threshold values, as connection oil circuit 7.4.3
Oil pressure when being less than the unlatching threshold values of third check valve 7.4.11 setting, third check valve 7.4.11 is opened, and oil liquid is from energy storage chamber
7.4.7 connection oil circuit 7.4.3 is flowed to by third check valve 7.4.11.
Wherein, the oil liquid when arrow in Fig. 6 show the utility model accumulation of energy branch to connection oil circuit 7.4.3 oil pressure pressure release
Flow direction, when oil pressure is excessive in connection oil circuit 7.4.3, oil liquid passes through the from connection oil circuit 7.4.3 when 4 tensile force of chain is excessive
Four check valve 7.4.12 enter energy storage chamber 7.4.7, and the 4th isolator 7.4.12 can be set and be opened by energy-storaging spring 7.4.13 accumulation of energy
Threshold values, when be connected to oil circuit 7.4.3 in oil pressure be greater than open threshold values when, the 4th isolator 7.4.12 open, oil liquid from connection oil circuit
7.4.3 energy storage chamber 7.4.7 is entered by the 4th check valve 7.4.12.
Only the most preferred embodiment of the utility model is described above, but is not to be construed as the limit to claim
System.The utility model is not only limited to above embodiments, and specific structure is allowed to vary.It is all in the utility model independent right
It is required that protection scope in made various change in scope of protection of the utility model.
Claims (8)
- Including be mounted on crankshaft crankshaft sprocket (1), the air inlet that is mounted on camshaft 1. a kind of engine timing chain apparatus Camshaft sprocket (2) and exhaust cam shaft sprocket wheel (3), the chain (4) around the setting of three sprocket wheels, setting are on chain (4) Chain tensioning mechanism, it is characterised in that: the chain tensioning mechanism includes being located at crankshaft sprocket (1) and dmission cam shaft sprocket wheel (2) the first movable guiding rail (5) between, the second movable guiding rail being located between crankshaft sprocket (1) and exhaust cam shaft sprocket wheel (3) (6), stretcher (7), the stretcher (7) include shell (7.1) and the first piston that the first movable guiding rail (5) offset (7.2), the second piston (7.3) to offset with the second movable guiding rail (6), the automatic adjustment oil circuit being located in shell (7.1) (7.4), the pressure that automatic adjustment oil circuit (7.4) is used to retract first piston (7.2) in stretcher (7), which is converted into, makes the Two pistons (7.3), which stretch out the thrust of stretcher (7) or second piston (7.3) are retracted the pressure in stretcher (7), to be converted into First piston (7.2) are made to stretch out the thrust of stretcher (7).
- 2. engine timing chain apparatus according to claim 1, it is characterised in that: automatic adjustment oil circuit (7.4) packet It includes and is located in the shell (7.1) for first piston (7.2) mobile first oil pocket (7.4.1), for second piston (7.3) movement The second oil pocket (7.4.2), two of connection the first oil pocket (7.4.1) and the second oil pocket (7.4.2) be connected to oil circuit (7.4.3), The first check valve (7.4.4) and second one-way valve (7.4.5) being respectively provided on two connections oil circuit (7.4.3), described first The dynamic direction of check valve (7.4.4) fuel feeding liquid stream is limited to uniaxially flow to the second oil pocket from the first oil pocket (7.4.1) (7.4.2), the dynamic direction of second one-way valve (7.4.5) the fuel feeding liquid stream are limited to be only capable of uniaxially from the second oil pocket (7.4.2) flows to the first oil pocket (7.4.1).
- 3. engine timing chain apparatus according to claim 2, it is characterised in that: two connection oil circuits (7.4.3) Between by pressure stabilizing oil circuit (7.4.6) be connected to.
- 4. engine timing chain apparatus according to claim 3, it is characterised in that: automatic adjustment oil circuit (7.4) Connection oil circuit (7.4.3) is pumped by engine inner engine oil and carries out pressurization or pressure release to oil liquid.
- 5. engine timing chain apparatus according to claim 3, it is characterised in that: the automatic adjustment oil circuit (7.4) is also Including accumulation of energy branch, the accumulation of energy branch includes energy storage chamber (7.4.7), the energy storage piston that is located in energy storage chamber (7.4.7) The accumulation of energy oil circuit of (7.4.8), connection energy storage chamber (7.4.7) and connection oil circuit (7.4.3) controls accumulation of energy oil circuit and is connected to oil circuit The control valve of (7.4.3) on-off.
- 6. engine timing chain apparatus according to claim 5, it is characterised in that: the accumulation of energy oil circuit includes the first branch (7.4.9) and second branch (7.4.10), the control valve include the third check valve being located on the first branch (7.4.9) (7.4.11), the 4th check valve (7.4.12) being located on second branch (7.4.10), the third check valve (7.4.11) are used It is only capable of flowing to connection oil circuit (7.4.3) from energy storage chamber (7.4.7) in limiting oil liquid, the 4th check valve (7.4.12) is used for Oil liquid is limited to be only capable of flowing to energy storage chamber (7.4.7) from connection oil circuit (7.4.3).
- 7. engine timing chain apparatus according to claim 2, it is characterised in that: the first piston (7.2) passes through the One spring (7.5) offsets with the first oil pocket (7.4.1) elasticity, and the second piston (7.3) passes through second spring (7.6) and second Oil pocket (7.4.2) elasticity offsets.
- 8. engine timing chain apparatus according to claim 5, it is characterised in that: the energy storage piston (7.4.8) passes through Energy-storaging spring (7.4.13) offsets with energy storage chamber (7.4.7) elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820479350.4U CN208268328U (en) | 2018-04-03 | 2018-04-03 | Engine timing chain apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820479350.4U CN208268328U (en) | 2018-04-03 | 2018-04-03 | Engine timing chain apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208268328U true CN208268328U (en) | 2018-12-21 |
Family
ID=64676699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820479350.4U Active CN208268328U (en) | 2018-04-03 | 2018-04-03 | Engine timing chain apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208268328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757859A (en) * | 2018-04-03 | 2018-11-06 | 博格华纳汽车零部件(宁波)有限公司 | Engine timing chain apparatus |
-
2018
- 2018-04-03 CN CN201820479350.4U patent/CN208268328U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757859A (en) * | 2018-04-03 | 2018-11-06 | 博格华纳汽车零部件(宁波)有限公司 | Engine timing chain apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208268328U (en) | Engine timing chain apparatus | |
| CN204664319U (en) | Hybrid power engine front end wheel train automatic tensioner | |
| WO2007073556A3 (en) | Pump with one-touch release | |
| CN208295057U (en) | Start dynamo belt transmission device | |
| CN208221502U (en) | Tensioning apparatus | |
| CN108412988A (en) | Start dynamo belt transmission device | |
| CN108757859A (en) | Engine timing chain apparatus | |
| ATE34346T1 (en) | CHAIN TENSIONING DEVICE. | |
| CN203571146U (en) | Gas pressure reducer | |
| CN204628455U (en) | A kind of high performance hydraulic of adjustment automatically stretcher | |
| CN210948827U (en) | High-pressure pulse type supercharged engine | |
| CN108561516A (en) | Tensioning apparatus | |
| CN206899765U (en) | A kind of 3D printer timing belt clamping system | |
| CN206397594U (en) | A kind of engineering machinery engine front end wheel train | |
| CN103375555B (en) | Hydraulic tensioner | |
| RU2001123421A (en) | INTEGRAL MULTIFUNCTIONAL SYSTEM FOR VEHICLE VEHICLES | |
| CN209800045U (en) | variable valve mechanism | |
| CN109695677B (en) | Automatic tensioner with gas-liquid reinforcement cylinder | |
| CN2732678Y (en) | Oil pressure tension device | |
| CN208215238U (en) | Camshaft and phase disk provision for disengagement | |
| CN108167252B (en) | Plug-in threeway one-way speed-regulating valve | |
| JP2008190595A (en) | Tensioner device with damper | |
| CN211951014U (en) | Hydraulic assembly for oil press | |
| CN103195891B (en) | A kind of hydraulic tappet type stretcher of engine | |
| CN205387994U (en) | Hydraulic manual pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |