WO1998004813A1 - An outlet valve for combustion engines and a production method therefor - Google Patents
An outlet valve for combustion engines and a production method therefor Download PDFInfo
- Publication number
- WO1998004813A1 WO1998004813A1 PCT/NO1997/000195 NO9700195W WO9804813A1 WO 1998004813 A1 WO1998004813 A1 WO 1998004813A1 NO 9700195 W NO9700195 W NO 9700195W WO 9804813 A1 WO9804813 A1 WO 9804813A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- stem
- passage
- section
- valve
- Prior art date
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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
Definitions
- the invention concerns an outlet valve as indicated in the introduction to claim 1.
- the invention further concerns a method for production of the valve, as indicated in claim 4.
- An object of the invention is therefore to provide a valve of the type 0 mentioned in the introduction which is capable of withstanding high temperatures, this being an essential property for achieving a high degree of efficiency in the engine, passages being provided in the valve for through- flow of a cooling fluid. It is a further object of the invention to provide a light valve, the valve weight being a critical parameter for the achievement 5 of high RPM or high piston stroke frequency. A further object of the invention is to provide a method for the production of such a valve.
- Fig. 1 is a side view of a first embodiment of a valve according to the invention, where the right half of the valve is shown as a longitudinal section through it, where a section of the valve has been cut away.
- Fig. 2 is a section along line II-II through the valve which is illustrated in fig. 5 1.
- Fig. 3 is a section along line III-III through the valve which is illustrated in fig. 2.
- Fig. 4 is a side view of a second embodiment of a valve according to the invention where a section of the valve has been cut away.
- Fig. 5 is a side view of a third embodiment of a valve according to the invention where a section of the valve has been cut away.
- the same reference numerals are used for corresponding components or sections of the different embodiments of the valve.
- the valve comprises a cylindrical stem 2 and a valve plate 4.
- the valve plate 4 is circular and disk-shaped and extends along a disk plane S which is perpendicular to the stem's longitudinal axis.
- a first passage 6 Through the stem 2 there extends a first passage 6, and a seat 8 is provided in the plate 4 along its periphery.
- the seat 8 divides the surface of the plate into a first and a second surface section 10 and 12 respectively, which are located on the side of the plate 4 which faces towards and away from the stem 2 respectively.
- This figure also illustrates how the stem 2 is securely connected to a first, circular and disk-shaped part 14 of the plate 4 and that the first passage 6 extends through this first plate part 14. It is further illustrated that there is provided a second circular, disk-shaped plate part 16 which is inserted in a circular recess 18 in the front of the first valve plate part 14, i.e. in the side of the first plate part 14 which faces away from the stem 2.
- first plate part 14 there are provided a number of holes 24, which are connected to or communicate with a second end of the respective channels 20, and which lead into the first surface section 10.
- the two plate sections are securely interconnected, e.g. by welding seams which extend at each protrusion 22 and which are indicated by broken lines in fig. 2.
- a welding seam further extends along the circular edge of the recess 18, thus connecting this edge with the perimeter edge of the second plate part 16.
- the second plate part 16 thereby closes the channels 20, thereby providing first passage sections 26, which are closed in section and one end of which at the centre of the plate parts communicates with the first passage 6, and the other end of which communicates with the holes 24.
- the first passage sections 26 form a second passage 28.
- the welding seams are preferably produced by electronic beam welding, thereby advantageously ensuring that the welding seams extend very close to the contour of each protrusion 22, thus avoiding to the greatest possible extent the formation of fracture points. If a welding seam is also provided along the central section of each protrusion, this ensures that no bulging occurs in the second plate part 16 due to material yield or creep of this part when it is exposed to high temperature. Since the outlet of the holes, e.g., forms the narrowest section of the individual passageways through the valve, by means of an appropriate choice of pressure at the inlet and the outlet of the passageways, viz. at the inlet of the passage 6 in the stem 2 and the outlet of the holes 24, a maximum gas velocity , viz. the velocity of sound, can be achieved.
- the channels 20 may be formed by electro-erosion.
- Fig. 4 illustrates a second embodiment of a valve according to the invention.
- the first and the second plate parts are concave in shape.
- Fig. 5 illustrates a third embodiment of a valve according to the invention, where the first plate part comprises a section 30 which is securely connected to the valve stem 2, and a plate 32.
- This plate 32 and the second plate part 16 may initially be produced separated from the stem 2 and the section 30 by pressing, after which they are machined.
- the channels and a central hole may be produced in the plate 32 by electro-erosion, after which the plate part 16 and the plate 32 are welded together by electronic beam welding.
- This assembly is then attached to the section 30, also by electronic beam welding.
- the plate 32 and the plate part 16 hereby extend convexly away from the stem.
- stresses in the plate during operation of the motor will include membrane stresses, thus loading the valve in an advantageous manner, resulting in a light valve.
- the channels 20 and the holes 24 are made in the first plate part 14 or the plate 32. It will be understood, however, that, if the second plate part 16 has a different shape, the channels and the holes may be produced in this part instead. In this case the second plate part may, e.g., include the seat and an extended peripheral section in which the holes 24 extend. When tested, the valve has fulfilled all expectations.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97933078A EP0916016A1 (en) | 1996-07-31 | 1997-07-31 | An outlet valve for combustion engines and a production method therefor |
CA002261624A CA2261624A1 (en) | 1996-07-31 | 1997-07-31 | An outlet valve for combustion engines and a production method therefor |
JP50872498A JP2001504563A (en) | 1996-07-31 | 1997-07-31 | Outlet valve for combustion engine and method of manufacturing the same |
AU36366/97A AU716086B2 (en) | 1996-07-31 | 1997-07-31 | An outlet valve for combustion engines |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO963197 | 1996-07-31 | ||
NO963197A NO963197L (en) | 1996-07-31 | 1996-07-31 | Exhaust gas valve for internal combustion engines |
NO972301 | 1997-05-20 | ||
NO972301A NO972301L (en) | 1996-07-31 | 1997-05-20 | Exhaust valve for internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998004813A1 true WO1998004813A1 (en) | 1998-02-05 |
Family
ID=26648681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1997/000195 WO1998004813A1 (en) | 1996-07-31 | 1997-07-31 | An outlet valve for combustion engines and a production method therefor |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0916016A1 (en) |
JP (1) | JP2001504563A (en) |
AU (1) | AU716086B2 (en) |
CA (1) | CA2261624A1 (en) |
NO (1) | NO972301L (en) |
WO (1) | WO1998004813A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999010630A1 (en) * | 1997-08-27 | 1999-03-04 | Kvaerner Asa | Exhaust valve for internal combustion engines |
WO2009122221A1 (en) * | 2008-04-02 | 2009-10-08 | Dionysios Choidas | Method and arrangements for the cooling of the surroundings of an exhaust valve |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US722787A (en) * | 1898-03-31 | 1903-03-17 | Westinghouse Machine Co | Gas-engine. |
US1294416A (en) * | 1918-01-02 | 1919-02-18 | Pfanstiehl Company Inc | Valve and method of making the same. |
US1809201A (en) * | 1929-03-23 | 1931-06-09 | Higgins John Howard | Exhaust valve |
GB440206A (en) * | 1934-06-23 | 1935-12-23 | Clerk Robert Cecil | Improvements in or relating to poppet valves for internal combustion engines |
US2052279A (en) * | 1933-08-24 | 1936-08-25 | Thompson Prod Inc | Valve mechanism |
US2544605A (en) * | 1947-11-13 | 1951-03-06 | Mallory Marion | Internal-combustion engine |
US3710773A (en) * | 1969-12-02 | 1973-01-16 | Porsche Kg | Mushroom valve, especially for internal combustion engines |
US4187807A (en) * | 1978-02-22 | 1980-02-12 | Caterpillar Tractor Co. | Cooled engine valve with improved heat transfer |
US5237148A (en) * | 1990-10-04 | 1993-08-17 | Brother Kogyo Kabushiki | Device for manufacturing a nozzle and its manufacturing method |
US5413073A (en) * | 1993-04-01 | 1995-05-09 | Eaton Corporation | Ultra light engine valve |
-
1997
- 1997-05-20 NO NO972301A patent/NO972301L/en unknown
- 1997-07-31 AU AU36366/97A patent/AU716086B2/en not_active Ceased
- 1997-07-31 JP JP50872498A patent/JP2001504563A/en active Pending
- 1997-07-31 CA CA002261624A patent/CA2261624A1/en not_active Abandoned
- 1997-07-31 EP EP97933078A patent/EP0916016A1/en not_active Withdrawn
- 1997-07-31 WO PCT/NO1997/000195 patent/WO1998004813A1/en not_active Application Discontinuation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US722787A (en) * | 1898-03-31 | 1903-03-17 | Westinghouse Machine Co | Gas-engine. |
US1294416A (en) * | 1918-01-02 | 1919-02-18 | Pfanstiehl Company Inc | Valve and method of making the same. |
US1809201A (en) * | 1929-03-23 | 1931-06-09 | Higgins John Howard | Exhaust valve |
US2052279A (en) * | 1933-08-24 | 1936-08-25 | Thompson Prod Inc | Valve mechanism |
GB440206A (en) * | 1934-06-23 | 1935-12-23 | Clerk Robert Cecil | Improvements in or relating to poppet valves for internal combustion engines |
US2544605A (en) * | 1947-11-13 | 1951-03-06 | Mallory Marion | Internal-combustion engine |
US3710773A (en) * | 1969-12-02 | 1973-01-16 | Porsche Kg | Mushroom valve, especially for internal combustion engines |
US4187807A (en) * | 1978-02-22 | 1980-02-12 | Caterpillar Tractor Co. | Cooled engine valve with improved heat transfer |
US5237148A (en) * | 1990-10-04 | 1993-08-17 | Brother Kogyo Kabushiki | Device for manufacturing a nozzle and its manufacturing method |
US5413073A (en) * | 1993-04-01 | 1995-05-09 | Eaton Corporation | Ultra light engine valve |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999010630A1 (en) * | 1997-08-27 | 1999-03-04 | Kvaerner Asa | Exhaust valve for internal combustion engines |
WO2009122221A1 (en) * | 2008-04-02 | 2009-10-08 | Dionysios Choidas | Method and arrangements for the cooling of the surroundings of an exhaust valve |
GR20080100222A (en) * | 2008-04-02 | 2009-11-19 | Διονυσιος Χαραλαμπους Χοϊδας | Method and devices of cooling of the environment of an outlet value. |
Also Published As
Publication number | Publication date |
---|---|
CA2261624A1 (en) | 1998-02-05 |
JP2001504563A (en) | 2001-04-03 |
NO972301L (en) | 1998-02-02 |
NO972301D0 (en) | 1997-05-20 |
AU3636697A (en) | 1998-02-20 |
EP0916016A1 (en) | 1999-05-19 |
AU716086B2 (en) | 2000-02-17 |
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