GB2532014A - A lash adjuster and roller finger follower - Google Patents
A lash adjuster and roller finger follower Download PDFInfo
- Publication number
- GB2532014A GB2532014A GB1419646.3A GB201419646A GB2532014A GB 2532014 A GB2532014 A GB 2532014A GB 201419646 A GB201419646 A GB 201419646A GB 2532014 A GB2532014 A GB 2532014A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lash adjuster
- finger follower
- roller finger
- magnet
- roller
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 claims description 36
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000005381 magnetic domain Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 description 4
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 229910000828 alnico Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
-
- 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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
- F16H53/06—Cam-followers
-
- 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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L2001/2433—Self contained, e.g. sealed hydraulic lash adjusters
-
- 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
- F01L2301/00—Using particular materials
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
-
- 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
- F01L2305/00—Valve arrangements comprising rollers
-
- 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
- F01L2309/00—Self-contained lash adjusters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
A roller finger follower (RFF) 4 and a lash adjuster, eg a hydraulic lash adjuster 12, for an i.c. engine valve train are magnetically attracted to each other so as to hold them together during assembly of the engine. The lash adjuster 12 has a first end 12a to engage a roller finger follower (RFF) 4 and a second end 12b to engage an engine housing. The lash adjuster 12 may have a magnetic portion 20 near the interface with the RFF 4. The magnetic portion 20 may be a permanent or semi-permanent magnet made by applying an electro-magnet field to the end 12a of the lash adjuster or by passing a magnet over the area to be magnetised. A magnet or electromagnet may be provided as part of the lash adjuster. Alternatively the RFF may comprise a magnetic portion 18.
Description
A LASH ADJUSTER AND ROLLER FINGER FOLLOWER
Technical Field
The present disclosure relates to a magnetised Roller Finger Follower (RFF) and/or a magnetised lash adjuster used to prevent the two dislodging from one another during the assembly of a valve train assembly for an engine. The present disclosure also relates to a method of manufacturing either of the components and a method of assembling either or both of the above mentioned components.
Background
A valve train is generally included within an internal combustion engine (ICE) to control the timing of the cylinder valves which regulate the flow of inlet and outlet gases to and from the cylinders. The valve train typically comprises roller finger followers (RFF) which confer the valve movements prescribed by the engine cam shaft to the valve stems. A mechanical or hydraulic lash adjuster is typically incorporated into the valve train for each RFF which controls the pivot point of the RFF and allows for adjustments to be made, for example to account for valve wear.
During assembly of the valve train, the lash adjuster is assembled first. The RFF is then assembled and rests on top of the lash adjuster and valve. The RFF is not initially fixed in position and hence when the cam shaft is assembled into the valve train, the RFF may be dislodged from the lash adjuster. This may require the valve train to be reassembled. To mitigate this risk, a clip is typically added to the valve train assembly with the specific purpose of maintaining the relative positions of the RFF and lash adjuster. Once the valve train is fully assembled within the engine, the clip has no further purpose. As well as carrying a significant cost, the clip can also impact on the design of the RFF or lash adjuster and impose a space envelope which must be considered in the operation of the RFF and valve train. For example the amount of material at the interface between the RFF and lash adjuster may have to be reduced to accommodate the clip and permit the required relative motion between the two components. The strength and rigidity of the two components may be reduced as a result.
An alternative which does not carry these disadvantages would be desirable.
Statement of Invention
According to a first aspect of the present disclosure there is provided a lash adjuster for an internal combustion engine valve train, the lash adjuster comprising first and second ends, wherein the first end is configured to engage a roller finger follower and a second end is configured to engage an engine housing, wherein the lash adjuster is configured such that the lash adjuster is magnetically attracted to the roller finger follower so as to hold the roller finger follower and lash adjuster together during assembly of the internal combustion engine.
The lash adjuster may comprise a hydraulic lash adjuster (HLA), such as a stationary HLA. The lash adjuster may comprise a magnet. The magnet may comprise a magnetised material. The magnet may be formed from one or more of Neodymium Iron Boron (NdFeB or NIB), Samarium Cobalt (SmCo), a compound of Aluminium, Nickel and Cobalt (Alnico), Ceramic and Ferrite and/or any other magnetisable material. Alternatively or additionally the magnet may comprise an electro-magnet, which may be selectively energisable. The magnet may be formed from one or more of Neodymium Iron Boron (NdFeB or NIB), Samarium Cobalt (SmCo), a compound of Aluminium, Nickel and Cobalt (Alnico), Ceramic and Ferrite. The magnet may be provided at or towards the first end of the lash adjuster.
According to a second aspect of the present disclosure there is provided a roller finger follower for an internal combustion engine valve train, wherein the roller finger follower is configured to engage a lash adjuster at a first location on the roller finger follower and the roller finger follower is configured to engage a valve stem at a second location on the roller finger follower, the second location being spaced apart from the first location, wherein the roller finger follower is configured such that the roller finger follower is magnetically attracted to the lash adjuster so as to hold the roller finger follower and lash adjuster together during assembly of the internal combustion engine.
The roller finger follower may comprise a magnet. The magnet may comprise a magnetised material and may be formed from one or more of the materials mentioned above. Alternatively or additionally the magnet may comprise an electro-magnet, which may be selectively energisable. The magnet may be formed from one or more of the materials referenced above. The magnet may be provided at or locally to the first location of the roller finger follower.
A valve train or engine may comprise the above mentioned lash adjuster and/or the above mentioned roller finger follower.
According to a third aspect of the present disclosure there is provided a method of making the above mentioned lash adjuster, wherein the method comprises magnetising the lash adjuster. The method of magnetising the lash adjuster may comprise passing a magnet over the lash adjuster to magnetise at least a portion of the lash adjuster and may comprise applying a magnetic field to the lash adjuster so as to align magnetic domains within at least a portion of the lash adjuster. The method of magnetising the lash adjuster may comprise placing a coil around a portion of the lash adjuster and applying a current to the coil.
According to a fourth aspect of the present disclosure, there is provided a method of making the above mentioned roller finger follower, wherein the method comprises magnetising the roller finger follower. The method of magnetising the roller finger follower may comprise passing a magnet over the roller finger follower to magnetise at least a portion of the roller finger follower and may comprise applying a magnetic field to the roller finger follower so as to align magnetic domains within at least a portion of the roller finger follower. The method of magnetising the lash adjuster may comprise placing a coil around a portion of the roller finger follower and applying a current to the coil.
Either of the above mentioned methods may comprise an automated process which may comprise placing the lash adjuster or roller finger follower in a die around which a coil is provided; energising the coil (e.g. by passing a current through the coil); and removing the lash adjuster or roller finger follower from the die.
According to a fifth aspect of the current disclosure there is provided a method of assembling an internal combustion engine valve train, the method comprising: providing the above mentioned lash adjuster and/or the above mentioned roller finger follower; and magnetically coupling the lash adjuster and roller finger follower together so that the lash adjuster and roller finger follower remain engaged during assembly.
Brief Description of the Drawings
For a better understanding of the present disclosure, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which: Figure 1 is a side view showing an internal combustion engine valve train assembly according to an example of the present disclosure; and Figure 2 is a side view showing a lash adjuster and a roller finger follower according to examples of the present disclosure.
Detailed Description
With reference to Figure 1, the present disclosure relates to an internal combustion engine valve train assembly 100. The valve train assembly comprises a valve 2, a finger follower, such as a roller finger follower 4, a cam 8, a cam shaft 10 and a lash adjuster 12. The valve 2 may be an intake or an exhaust valve.
The valve 2 comprises a valve seat (not shown) and a corresponding valve closure 2a. The valve further comprises a valve stem 2b. The valve closure 2a is connected to the valve stem 2b at a first end of the valve stem. The valve stem 2b is coupled to the finger follower 4 at a second end of the valve stem. A valve spring 6 may be disposed about the valve stem 2b and may be configured to provide a restoring force against any displacements imparted on the valve stem 2b by the roller finger follower 4.
The roller finger follower 4 has first and second ends 4a, 4b. In the example shown in figure 1, first end 4a is configured to couple with the valve stem 2b and second end 4b is configured to interface with the lash adjuster 12 such that the roller finger follower may pivot about the lash adjuster.
The roller finger follower also comprises roller follower 4c which, in the arrangement shown, is positioned between the first and second ends 4a, 4b. In alternative arrangements, the roller follower 4c may be positioned at or towards an end of the roller finger follower 4. In this case the roller finger follower 4 may be configured to couple with the valve stem 2b or the lash adjuster 12 at a point between the two ends. The roller follower 4c is configured to interface with cam 8. The roller finger follower 4 confers the movements prescribed by the cam 8 to the valve 2. Cam 8 is configured to provide prescribed displacements to valve 2 through roller finger follower 4 to produce the desired valve opening and closing times during the engine cycle.
With reference to Figure 2, the lash adjuster 12 generally comprises a body 14 and a plunger 16, the plunger 16 being movable, e.g. slidable, within the body 14. The lash adjuster 12 has first and second ends 12a, 12b. First end 12a is configured to interface with roller finger follower 4. Second end 12b is configured to connect to an engine housing (not shown) or any other appropriate structure. In the arrangement shown in figures 1 and 2, first end 12a is provided on the plunger 16 and second end 12b is provided on the body 14, however the inverse is also possible.
In operation, the length of the lash adjuster 12 can be altered, for example through the use of hydraulics or a mechanical screw. Altering the length of lash adjuster 12 affects the position and orientation of roller finger follower 4. This affects how displacements prescribed by cam 8 are conferred to valve 2. This can be used to adjust the valve displacements, for example to account for valve wear.
The lash adjuster first end 12a is configured to pivot about the roller finger follower 4 when assembled. This interface is shown in greater detail in Figure 2. In the example shown in Figure 2, the lash adjuster first end 12a comprises a first bearing surface that may be partially spherical. The roller finger follower 4 comprises a second bearing surface that may be partially spherical. The second bearing surface may be provided in a recess in the roller finger follower 4 which receives the lash adjuster first end 12a.
Referring still to Figure 2, the lash adjuster comprises a magnetic portion 20. The magnetic portion 20 may be provided at or near the interface with the roller finger follower 4. Additionally or alternatively, the roller finger follower 4 may comprise a magnetic portion 18. The magnetic portion 18 may be provided at or near the interface with the lash adjuster.
The lash adjuster magnetic portion 20 may comprise a magnetic material, such as a 35 permanent or semi-permanent magnet. The magnetic material may have been magnetised by applying an electro-magnetic field to the lash adjuster end 12a, e.g. aligning the magnetic dipoles of the lash adjuster material in the magnetic portion 20. Magnetising the lash adjuster may also be achieved by passing a magnet over the area of the lash adjuster to be magnetised. Alternatively, a magnet or an electro magnet may be provided as part of the lash adjuster. An electro magnet may be selectively energised, e.g. during assembly of the engine. Other methods of magnetising the lash adjuster may also be possible. In the embodiment shown in figure 2 the lash adjuster 12 is magnetically attracted to the roller finger follower end 4b as the roller finger follower may be constructed from a magnetically attracting material, such as steel. In an alternative embodiment, the roller finger follower may itself be magnetised by any of the methods described above for magnetising the lash adjuster or another method. In this case the lash adjuster may also be magnetised or may be constructed from a magnetic material and may thus be attracted to the magnetised roller finger follower.
The magnetic portion 18 and/or 20 may be magnetised by virtue of an automated process. The lash adjuster 12 or roller finger follower 4 may be placed in a die around which an electric coil is provided. Passing a current through the coil may magnetise the lash adjuster or roller finger follower. The lash adjuster or roller finger follower may then be removed from the die and replaced with a subsequent lash adjuster or roller finger follower for magnetising. The coil may extend around one or more lash adjusters or roller finger followers.
During assembly of the valve train 100, valve 2 and lash adjuster 12 are generally assembled first. Roller finger follower 4 is assembled subsequently to couple with the valve 2 and rest upon the lash adjuster 12. The cam shaft 10 may then be assembled and holds the roller finger follower 4 in place. As the lash adjuster 12 is magnetically attracted to the roller finger follower 4 at their interface, there is a reduced risk of the two components being dislodged during the assembly process.
It will be appreciated by those skilled in the art that although the invention has been described by way of example, with reference to one or more examples, it is not limited to the disclosed examples and that alternative examples could be constructed without departing from the scope of the invention as defined by the appended claims.
Claims (25)
- Claims 1. A lash adjuster for an internal combustion engine valve train, the lash adjuster comprising first and second ends, wherein the first end is configured to engage a roller finger follower and a second end is configured to engage an engine housing, wherein the lash adjuster is configured such that the lash adjuster is magnetically attracted to the roller finger follower so as to hold the roller finger follower and lash adjuster together during assembly of the internal combustion engine.
- 2. The lash adjuster according to claim 1, wherein the lash adjuster comprises an hydraulic lash adjuster.
- 3. The lash adjuster according to claim 1 or 2, wherein the lash adjuster comprises a magnet.
- 4. The lash adjuster according to claim 3, wherein the magnet comprises a magnetised material.
- 5. The lash adjuster according to claim 3 or 4, wherein the magnet comprises an electro-magnet.
- 6. The lash adjuster according to claim 5, wherein the electro-magnet is selectively energisable.
- 7. The lash adjuster according to any of claims 3 to 6, wherein the magnet is provided at or towards the first end of the lash adjuster.
- 8. A roller finger follower for an internal combustion engine valve train, wherein the roller finger follower is configured to engage a lash adjuster at a first location on the roller finger follower and the roller finger follower is configured to engage a valve stem at a second location on the roller finger follower, the second location being spaced apart from the first location, wherein the roller finger follower is configured such that the roller finger follower is magnetically attracted to the lash adjuster so as to hold the roller finger follower and lash adjuster together during assembly of the internal combustion engine.
- 9. The roller finger follower according to claim 8, wherein the roller finger follower comprises a magnet.
- 10. The roller finger follower according to claim 9, wherein the magnet comprises a magnetised material.
- 11. The roller finger follower according to claim 9 or 10, wherein the magnet comprises an electro-magnet.
- 12. The roller finger follower according to claim 11, wherein the electro-magnet is selectively energisable.
- 13. The roller finger follower according to any of claims 9 to 12, wherein the magnet is provided at or locally to the first location of the roller finger follower.
- 14. A valve train or engine comprising the lash adjuster according to any of claims 1 to 7 and/or the roller finger follower according to any of claims 8 to 13.
- 15. A method of making the lash adjuster of any of claims 1 to 7, wherein the method comprises magnetising the lash adjuster.
- 16. The method of claim 15, wherein magnetising the lash adjuster comprises passing a magnet over the lash adjuster to magnetise at least a portion of the lash 25 adjuster.
- 17. The method according to claim 15 or 16, wherein magnetising the lash adjuster comprises applying a magnetic field to the lash adjuster so as to align magnetic domains within at least a portion of the lash adjuster.
- 18. The method according to any of claims 15 to 17, wherein magnetising the lash adjuster comprises placing a coil around a portion of the lash adjuster and applying a current to the coil.
- 19. A method of making the roller finger follower of any of claims 8 to 13, wherein the method comprises magnetising the roller finger follower.
- 20. The method of claim 19, wherein magnetising the roller finger follower comprises passing a magnet over the roller finger follower to magnetise at least a portion of the roller finger follower.
- 21. The method according to claim 19 or 20, wherein magnetising the roller finger follower comprises applying a magnetic field to the roller finger follower so as to align magnetic domains within at least a portion of the roller finger follower.
- 22. The method according to any of claims 19 to 21, wherein magnetising the roller finger follower comprises placing a coil around a portion of the roller finger follower and applying a current to the coil.
- 23. A method of assembling an internal combustion engine valve train, the method comprising: providing a lash adjuster according to any of claims 1 to 7 and/or a roller finger follower according to any of claims 8 to 13; and magnetically coupling the lash adjuster and roller finger follower together so that the lash adjuster and roller finger follower remain engaged during assembly.
- 24. A lash adjuster, roller finger follower, engine or valve train substantially as described herein with reference to and as shown in the drawings.
- 25. A method of making the lash adjuster or roller finger follower or of assembling an internal combustion engine valve train substantially as described herein with reference to and as shown in the drawings.Amendment to the claims have been filed as follows Claims 1. A lash adjuster for an internal combustion engine valve train, the lash adjuster comprising first and second ends, wherein the first end is configured to engage a roller finger follower and a second end is configured to engage an engine housing, wherein the lash adjuster comprises a magnet and is configured such that the lash adjuster is magnetically attracted to the roller finger follower so as to hold the roller finger follower and lash adjuster together during assembly of the internal combustion engine.2. The lash adjuster according to claim 1, wherein the lash adjuster comprises an hydraulic lash adjuster.3. The lash adjuster according to claim 1 or 2, wherein the magnet comprises a magnetised material.4. The lash adjuster according to any of claim 1 to 3, wherein the magnet comprisesO COan electro-magnet.00) 20 5. The lash adjuster according to claim 4, wherein the electro-magnet is selectively energisable.6. The lash adjuster according to any of claims 1 to 6, wherein the magnet is provided at or towards the first end of the lash adjuster. 25 7. A roller finger follower for an internal combustion engine valve train, wherein the roller finger follower is configured to engage a lash adjuster at a first location on the roller finger follower and the roller finger follower is configured to engage a valve stem at a second location on the roller finger follower, the second location being spaced apart from the first location, wherein the roller finger follower comprises a magnet and is configured such that the roller finger follower is magnetically attracted to the lash adjuster so as to hold the roller finger follower and lash adjuster together during assembly of the internal combustion engine.8. The roller finger follower according to claim 7, wherein the magnet comprises a magnetised material.9. The roller finger follower according to claim 7 or 8, wherein the magnet comprises an electro-magnet.10. The roller finger follower according to claim 9, wherein the electro-magnet is selectively energisable.11. The roller finger follower according to any of claims 7 to 10, wherein the magnet is provided at or locally to the first location of the roller finger follower.12. A valve train or engine comprising the lash adjuster according to any of claims 1 to 6 and/or the roller finger follower according to any of claims 7 to 11. 15 13. A method of making the lash adjuster of any of claims 1 to 6, wherein the method CD comprises magnetising the lash adjuster.O(3) 20 passing a magnet over the lash adjuster to magnetise at least a portion of the lash 14. The method of claim 13, wherein magnetising the lash adjuster comprises adjuster.15. The method according to claim 13 or 14, wherein magnetising the lash adjuster comprises applying a magnetic field to the lash adjuster so as to align magnetic domains within at least a portion of the lash adjuster.16. The method according to any of claims 13 to 15, wherein magnetising the lash adjuster comprises placing a coil around a portion of the lash adjuster and applying a current to the coil.17. A method of making the roller finger follower of any of claims 7 to 11, wherein the method comprises magnetising the roller finger follower.18. The method of claim 17, wherein magnetising the roller finger follower comprises passing a magnet over the roller finger follower to magnetise at least a portion of the roller finger follower.19. The method according to claim 17 or 18, wherein magnetising the roller finger follower comprises applying a magnetic field to the roller finger follower so as to align magnetic domains within at least a portion of the roller finger follower.20. The method according to any of claims 17 to 19, wherein magnetising the roller finger follower comprises placing a coil around a portion of the roller finger follower and applying a current to the coil.21. A method of assembling an internal combustion engine valve train, the method comprising: providing a lash adjuster according to any of claims 1 to 6 and/or a roller finger follower according to any of claims 7 to 11; and magnetically coupling the lash adjuster and roller finger follower together so that the lash adjuster and roller finger follower remain engaged during assembly.22. A lash adjuster, roller finger follower, engine or valve train substantially asO COdescribed herein with reference to and as shown in the drawings.(3) 20 23. A method of making the lash adjuster or roller finger follower or of assembling an internal combustion engine valve train substantially as described herein with reference to and as shown in the drawings.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1419646.3A GB2532014A (en) | 2014-11-04 | 2014-11-04 | A lash adjuster and roller finger follower |
| DE102015117897.4A DE102015117897A1 (en) | 2014-11-04 | 2015-10-21 | Lash adjuster and roller rocker |
| RU2015146207A RU2640308C2 (en) | 2014-11-04 | 2015-10-28 | Clearance adjuster and roller pusher for valve mechanism of internal combustion engine, methods of their manufacture, valve mechanism and method of its assembly |
| CN201520869846.9U CN205349453U (en) | 2014-11-04 | 2015-11-03 | Clearance adjustment ware, roller finger wheel follower and valve mechanism or engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1419646.3A GB2532014A (en) | 2014-11-04 | 2014-11-04 | A lash adjuster and roller finger follower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201419646D0 GB201419646D0 (en) | 2014-12-17 |
| GB2532014A true GB2532014A (en) | 2016-05-11 |
Family
ID=52118697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1419646.3A Withdrawn GB2532014A (en) | 2014-11-04 | 2014-11-04 | A lash adjuster and roller finger follower |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN205349453U (en) |
| DE (1) | DE102015117897A1 (en) |
| GB (1) | GB2532014A (en) |
| RU (1) | RU2640308C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2578338A (en) * | 2019-03-07 | 2020-05-06 | Cox Powertrain Ltd | Marine outboard motor with valve train |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018017779A1 (en) * | 2016-07-20 | 2018-01-25 | Eaton Corporation | Variable valve actuation system for type ii valvetrain using lost motion and reset |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1237072A (en) * | 1967-07-10 | 1971-06-30 | British Leyland Motor Corp | Improvements in thrust transmitting mechanisms |
| US20010035144A1 (en) * | 2000-04-12 | 2001-11-01 | Burns John J. | Load biasing retainer clip and valve actuator subassembly |
| US20140216378A1 (en) * | 2013-02-04 | 2014-08-07 | GM Global Technology Operations LLC | Stationary hydraulic lash adjuster and roller finger follower assembly clip, and method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU476366A1 (en) * | 1972-12-20 | 1975-07-05 | Центральный научно-исследовательский автомобильный и автомоторный институт | Demodrom Valve Mechanism for Internal Combustion Engine |
-
2014
- 2014-11-04 GB GB1419646.3A patent/GB2532014A/en not_active Withdrawn
-
2015
- 2015-10-21 DE DE102015117897.4A patent/DE102015117897A1/en active Pending
- 2015-10-28 RU RU2015146207A patent/RU2640308C2/en active
- 2015-11-03 CN CN201520869846.9U patent/CN205349453U/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1237072A (en) * | 1967-07-10 | 1971-06-30 | British Leyland Motor Corp | Improvements in thrust transmitting mechanisms |
| US20010035144A1 (en) * | 2000-04-12 | 2001-11-01 | Burns John J. | Load biasing retainer clip and valve actuator subassembly |
| US20140216378A1 (en) * | 2013-02-04 | 2014-08-07 | GM Global Technology Operations LLC | Stationary hydraulic lash adjuster and roller finger follower assembly clip, and method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2578338A (en) * | 2019-03-07 | 2020-05-06 | Cox Powertrain Ltd | Marine outboard motor with valve train |
| GB2578338B (en) * | 2019-03-07 | 2020-12-09 | Cox Powertrain Ltd | Marine outboard motor with valve train having adjustable lash |
| US11313255B2 (en) | 2019-03-07 | 2022-04-26 | Cox Powertrain Limited | Marine outboard motor with valve train having adjustable lash |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2640308C2 (en) | 2017-12-27 |
| DE102015117897A1 (en) | 2016-05-04 |
| GB201419646D0 (en) | 2014-12-17 |
| CN205349453U (en) | 2016-06-29 |
| RU2015146207A (en) | 2017-05-16 |
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| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |