GB347806A - Improvements in means for adjusting the valve gears of internal combustion engines - Google Patents
Improvements in means for adjusting the valve gears of internal combustion enginesInfo
- Publication number
- GB347806A GB347806A GB7076/30A GB707630A GB347806A GB 347806 A GB347806 A GB 347806A GB 7076/30 A GB7076/30 A GB 7076/30A GB 707630 A GB707630 A GB 707630A GB 347806 A GB347806 A GB 347806A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valves
- exhaust
- shafts
- opening
- 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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34403—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
347,806. Valve gear; regulating. BOULET, G., 8, Avenue de Bellevue, Sevres, Seine-et-Oise, France. March 4, 1930, No. 7076. Convention date, March 30, 1929. [Class 7 (vi).] A pair of inlet valves C and a corresponding pair of exhaust valves (not shown) are actuated by two cam shafts A, B, which are adjustable angularly in opposite directions so as to vary the periods of admission and exhaust, particularly in aircraft engines. The shafts are adjusted by axial movement of their driving-pinions, which engage helical flutes on the shafts, and the arrangement is such that the periods of opening of the two inlet valves may be made to overlap more or less to vary the total admission period, and the overlap of the opening of the exhaust valves may also be varied to the extent of allowing re-introduction of exhaust gas on the suction stroke when the period of opening of the inlet valves is short. According to the Specification as open to inspection under Sect. 91 (3) (a), there may be a separate shaft to each valve, either with four valves as described above, or with two inlet and one exhaust valve. Also, instead of providing helical flutes on the shafts, the flutes may be rectangular and the gearing teeth helical. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR347806X | 1929-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB347806A true GB347806A (en) | 1931-05-07 |
Family
ID=8892572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7076/30A Expired GB347806A (en) | 1929-03-30 | 1930-03-04 | Improvements in means for adjusting the valve gears of internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB347806A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2608210A2 (en) * | 1986-09-29 | 1988-06-17 | Innolab | Rotary timing device with discontinuous rotation using a Maltese cross including means for making the finger of the Maltese cross work |
| GB2228533A (en) * | 1988-12-24 | 1990-08-29 | Ford Motor Co | I.c.engine valve gear |
| WO2007057479A1 (en) * | 2005-11-16 | 2007-05-24 | Plasencia Marichal Pedro A | Camshaft variator device |
| ES2352488A1 (en) * | 2005-11-16 | 2011-02-21 | A Plasencia Marichal Pedro | Camshaft variator device |
-
1930
- 1930-03-04 GB GB7076/30A patent/GB347806A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2608210A2 (en) * | 1986-09-29 | 1988-06-17 | Innolab | Rotary timing device with discontinuous rotation using a Maltese cross including means for making the finger of the Maltese cross work |
| GB2228533A (en) * | 1988-12-24 | 1990-08-29 | Ford Motor Co | I.c.engine valve gear |
| WO2007057479A1 (en) * | 2005-11-16 | 2007-05-24 | Plasencia Marichal Pedro A | Camshaft variator device |
| ES2352488A1 (en) * | 2005-11-16 | 2011-02-21 | A Plasencia Marichal Pedro | Camshaft variator device |
| US8443774B2 (en) | 2005-11-16 | 2013-05-21 | Pedro A. Plasencia Marichal | Camshaft variator device |
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