GB424797A - Improvements in or relating to hydraulic valve operating mechanism which is self-adjusting to take up clearance in the valve mechanism - Google Patents
Improvements in or relating to hydraulic valve operating mechanism which is self-adjusting to take up clearance in the valve mechanismInfo
- Publication number
- GB424797A GB424797A GB3125333A GB3125333A GB424797A GB 424797 A GB424797 A GB 424797A GB 3125333 A GB3125333 A GB 3125333A GB 3125333 A GB3125333 A GB 3125333A GB 424797 A GB424797 A GB 424797A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plunger
- rocker
- oil
- arm
- valve
- 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.)
- Expired
Links
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
- F01L1/181—Centre 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
- F01L1/2416—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device attached to an articulated rocker
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
424,797. Valve gear. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.- (Wilcox-Rich Corporation ; 9771, French Road, Detroit, Michigan, U.S.A.) Nov. 9, 1933, No. 31253. [Class 7 (vi)] A valve-actuating rocker with hydraulic means for taking up clearance comprising a piston operating against oil pressure in a cylinder in one arm of the rocker, means being provided coacting with the piston whereby a part of the rocker-operating force is transmitted directly through the rocker arm and part through the oil chamber. In the form shown, one arm 12 of the rocker is bored to receive a plunger 38 which is formed with a wedge surface 45 engaging a corresponding incline on a plunger 44, bearing on the top of the push rod 14, oil being admitted behind the plunger 38 past a ball valve 30. The oil is taken from the usual lubricating- passage 24 in the rocker pivot, from which it escapes through a hole 23 and annular groove 22. The ball is retained by a disc 33, between which and a corresponding disc 36 bearing against the plunger 38, is arranged a spring 35. The disc 33 is formed with grooves in its edge for the passage of oil to the chamber behind the plunger 38, which chamber is kept of small dimensions. Preferably, the discs 33 and 36 are formed with projections 34, 37 which meet when the compensating- mechanism is collapsed to its limit, the spring 35 being also so designed as to fill the annular space around the projections 34, 37 when fully compressed, so that all the oil is expelled, together with any air or gas present. An air escape passage may, however, be provided as shown at 29. In a modification, the plunger 44 does not project from the rocker arm, but is retained within a recess in the arm by a small flange formed after the plunger is in position. The proportion of the force transmitted directly through the rocker arm is varied by alteration of the angle of the wedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3125333A GB424797A (en) | 1933-11-09 | 1933-11-09 | Improvements in or relating to hydraulic valve operating mechanism which is self-adjusting to take up clearance in the valve mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3125333A GB424797A (en) | 1933-11-09 | 1933-11-09 | Improvements in or relating to hydraulic valve operating mechanism which is self-adjusting to take up clearance in the valve mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB424797A true GB424797A (en) | 1935-02-28 |
Family
ID=10320329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3125333A Expired GB424797A (en) | 1933-11-09 | 1933-11-09 | Improvements in or relating to hydraulic valve operating mechanism which is self-adjusting to take up clearance in the valve mechanism |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB424797A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997021910A1 (en) * | 1995-12-11 | 1997-06-19 | Fev Motorentechnik Gmbh & Co. Kommanditgesellschaft | Means for the actuation of valves on a reciprocating engine with a variable valve lift, in particular a reciprocating internal combustion engine |
| CN112065524A (en) * | 2020-09-11 | 2020-12-11 | 潍柴动力股份有限公司 | Rocker arm assembly and engine |
| CN112912596A (en) * | 2018-09-10 | 2021-06-04 | 雅各布斯车辆系统公司 | Lost motion variable valve actuation system and method |
-
1933
- 1933-11-09 GB GB3125333A patent/GB424797A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997021910A1 (en) * | 1995-12-11 | 1997-06-19 | Fev Motorentechnik Gmbh & Co. Kommanditgesellschaft | Means for the actuation of valves on a reciprocating engine with a variable valve lift, in particular a reciprocating internal combustion engine |
| US6058895A (en) * | 1995-12-11 | 2000-05-09 | Fev Motorentechnik Gmbh & Co. | Means for the actuation of valves on a reciprocating engine with a variable valve lift, in particular a reciprocating internal combustion engine |
| CN112912596A (en) * | 2018-09-10 | 2021-06-04 | 雅各布斯车辆系统公司 | Lost motion variable valve actuation system and method |
| CN112065524A (en) * | 2020-09-11 | 2020-12-11 | 潍柴动力股份有限公司 | Rocker arm assembly and engine |
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