GB427808A - Improvements in or relating to valve gear for multi-cylinder internal-combustion engines - Google Patents
Improvements in or relating to valve gear for multi-cylinder internal-combustion enginesInfo
- Publication number
- GB427808A GB427808A GB3025233A GB3025233A GB427808A GB 427808 A GB427808 A GB 427808A GB 3025233 A GB3025233 A GB 3025233A GB 3025233 A GB3025233 A GB 3025233A GB 427808 A GB427808 A GB 427808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pinions
- pinion
- sleeve
- gear
- 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
- F01L1/36—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle
- F01L1/42—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle for machines or engines characterised by cylinder arrangements, e.g. star or fan
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
427,808. Valve gear. BRISTOL AEROPLANE CO., Ltd., and FEDDEN, A. H. R., Filton House, Bristol. Oct. 31, 1933, No. 30252. [Class 7 (vi)] In an engine having a number of valveoperating shafts distributed around a main driving-shaft, the valve-operating shafts are arranged in separate groups, the shafts of each group being geared together and to a pinion on the driving-shaft by a separate gear train for each group. The Figure shows an arrangement for a nine-cylinder radial sleeve-valve engine, in which the shafts of the nine sleeve-driving pinions 11 .. 19 are arranged in three groups about the central driving-pinion 21, each group having a separate gear train. Thus a compound idler gear 23 meshing with the pinion 21 drives the sleeve pinion 12 which actuates the sleeve pinions 11, 13 through idlers 26. Similarly, an idler gear 24 drives the sleeve pinions 14, 15, 16, and a third idler gear 25 the sleeve pinions 17, 18, 19. The cylinder and sleevevalve axes are indicated by the radii 1 .. 9, and the positions of the valve-actuating cranks by full lines drawn radially on the sleeve pinions, that for the pinion 11 being at A, and that for the pinion 12 at D. The pinions are made interchangeable one with the other. In order that the idler gears 23, 24, 25 may be interchangeable, the number of teeth on the pinion 21 must be a whole-number multiple of the number of groups of shafts. In order that the sleeve pinions 11 .. 19 may be interchangeable, the sum of the arcs AB, BC, and CD, measured in the direction of rotation of any two pinions and of the idler 26 connecting them, must be equal to a whole number of gear teeth. As an alternative, the outer pinions of a group may be of less face width than the middle pinions 12, 15, 18, so that these latter are interchangeable only among themselves. For ensuring correct assembling of the gears, each pinion is connected to its shaft by a splined arrangement having a master spline, or by other key devices ensuring that the pinion can be placed only in one angular position, and marks are scribed on the gear casing to indicate the correct positions of the valve-driving cranks. Alternatively, holes may be provided in the gears and casing to be brought into register, or an assembling jig may be used to hold all the sleeve cranks in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3025233A GB427808A (en) | 1933-10-31 | 1933-10-31 | Improvements in or relating to valve gear for multi-cylinder internal-combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3025233A GB427808A (en) | 1933-10-31 | 1933-10-31 | Improvements in or relating to valve gear for multi-cylinder internal-combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB427808A true GB427808A (en) | 1935-04-30 |
Family
ID=10304689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3025233A Expired GB427808A (en) | 1933-10-31 | 1933-10-31 | Improvements in or relating to valve gear for multi-cylinder internal-combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB427808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2542806A1 (en) * | 1983-03-16 | 1984-09-21 | Porsche Ag | DEVICE FOR DRIVING THE CAMSHAFT OF AN INTERNAL COMBUSTION ENGINE |
-
1933
- 1933-10-31 GB GB3025233A patent/GB427808A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2542806A1 (en) * | 1983-03-16 | 1984-09-21 | Porsche Ag | DEVICE FOR DRIVING THE CAMSHAFT OF AN INTERNAL COMBUSTION ENGINE |
| GB2140079A (en) * | 1983-03-16 | 1984-11-21 | Porsche Ag | Camshaft drive of an internal combustion engine |
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