DE1576370A1 - Valve for piston internal combustion engines - Google Patents
Valve for piston internal combustion enginesInfo
- Publication number
- DE1576370A1 DE1576370A1 DE19671576370 DE1576370A DE1576370A1 DE 1576370 A1 DE1576370 A1 DE 1576370A1 DE 19671576370 DE19671576370 DE 19671576370 DE 1576370 A DE1576370 A DE 1576370A DE 1576370 A1 DE1576370 A1 DE 1576370A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- internal combustion
- combustion engines
- plate
- piston internal
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 5
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000007789 sealing Methods 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
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
"Ventil für Kolbenbrennkraftmaschinen" Die Erfindung bezieht sich auf ein Ventil für Kolbenbrennkraftmaschinen, die im Betrieb hohen Temperaturen ausgesetzt sind. Die aufgestaute Wärme wird zum größten Teil über die kegelige Paßfläche am Ventilteller an den Ventilsitz und weiter an den Zylinderkopf abgegeben. Dadurch ergibt sich ein Temperaturgefälle im Ventilteller von der heißen Tellermitte bis zum verhältnismäßig kühleren Tellerrand. Diese ungleichmäßige Temperaturverteilung führt zu Tangentialspannungen, die zu radialen, vom Tellerrand ausgehenden Einrissen führen können. Es ist möglich, daß als Folge davon Teile des Tellerrandes ausbrechen und Schäden am Zylinder, dem Kolben und dem Zylinderkopfboden verursachen."Valve for reciprocating internal combustion engines" The invention relates to on a valve for piston internal combustion engines that operate at high temperatures are exposed. The pent-up heat is for the most part over the conical fitting surface at the valve plate to the valve seat and on to the cylinder head. Through this there is a temperature gradient in the valve plate from the hot plate center to to the relatively cooler edge of the plate. This uneven temperature distribution leads to tangential stresses that lead to radial cracks starting from the edge of the plate being able to lead. It is possible that parts of the horizon will break out as a result and cause damage to the cylinder, piston and cylinder head base.
Es ist die Aufgabe der Erfindung derartige Schäden durch eine Herab setzung des Temperaturgefälles im Ventilteller zu vermeiden. Dies geschieht durch einen zur Ventilachse koaxialen, von der Tellerunterseite ausgehenden und sich nach oben verjüngenden rotationskörperförmigen Hohlraum, dessen Tiefe etwa dem Halbmesser seiner Öffnung entspricht.It is the object of the invention to cause such damage to occur to avoid setting the temperature gradient in the valve disc. This is done through one coaxial to the valve axis, starting from the underside of the plate and moving towards it above tapering cavity in the form of a rotational body, the depth of which is approximately the radius corresponds to its opening.
Das Vermeiden einer Werkstoffanhäufung in der heißen Tellermitte führt zu einem Abbau der Tangentialspannungen im Tellerrand. Als zusätzlichen Vorteil erlaubt diese Form des Ventiltellers einen besseren Ausgleich der verbleibenden Spannungen von außen nach innen.Avoiding an accumulation of material in the hot plate center leads to a reduction of the tangential stresses in the edge of the plate. As an added benefit this shape of the valve disc allows a better compensation of the remaining Tensions from the outside in.
Besonders günstig sowohl für die Spannungsverminderung als auch für die Herstellung ist erfindungsgemäß die Ausbildung des Ilohlraumes als Kugelkalotte. Aus den gleichen Gründen geht der Hohlraum nach einer weiteren vorteilhaften Ausgestaltung der Erfindung mit einer Ab-' rundung in die Tellerunterseite über.Particularly beneficial for both tension reduction and According to the invention, the production is the formation of the hollow space as a spherical cap. For the same reasons, the cavity goes according to a further advantageous embodiment of the invention with a rounding into the bottom of the plate.
Die Zeichnung zeigt als Ausführungsbeispiel der Erfindung ein Ventil einer Kolbenbrennkraftmaschine, teilweise im Schnitt. Mit 1 ist der Ventilteller bezeichnet, der mit einer E Kehlung 2 in den Ventilschaft 3 übergeht. Zur Befestigung eines Federtellers mit Kegel stücken ist am oberen Ende des Ventilschaftes 3 eine Nut 4 angeordnet. Am Ventilteller 1 befindet sich eine kegelige Paßfläche 5, die sich beim Schließen des Ventils dichtend an den Ventilsitz im Zylinderkopf anlegt. Im Ventilteller 1 befindet sich ein von dessen Unterseite 6 ausgehender, zur Ventilachse koaxialer rotationskörperförmiger Hohlraum 7, der die Gestalt einer Kugelkalotte aufweist. Die Tiefe h des Hohlraumes 7 entspricht etwa dem d Halbmesser 2 seiner Öffnung 8. Der Hohlraum 7 geht mit einer Abrundung 9 in die Unterseite 6 des Ventiltellers 1 über.The drawing shows a valve as an embodiment of the invention a reciprocating internal combustion engine, partly in section. With 1 is the valve disc which merges into the valve stem 3 with an E groove 2. For fixing a spring plate with cone pieces is at the upper end of the valve stem 3 a Groove 4 arranged. On the valve plate 1 there is a conical mating surface 5, which when the valve closes, it makes a sealing contact with the valve seat in the cylinder head. In the valve disk 1 there is an outgoing from its underside 6, to the valve axis coaxial rotational body-shaped cavity 7, which has the shape of a spherical cap having. The depth h of the cavity 7 corresponds approximately to the d radius 2 of its Opening 8. The cavity 7 goes with a rounding 9 in the underside 6 of the valve disk 1 over.
Der durch diese Maßnahmen erzielte Spannungsabbau im Ventilteller führt zur Vermeidung von Ventilrissen und ihren schädlichen Folgen.The reduction in tension in the valve disk achieved by these measures leads to the avoidance of valve cracks and their harmful consequences.
Die Erfindung läßt sich bei Ein- und Auslaßventilen anwenden.The invention can be applied to inlet and outlet valves.
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1596702D FR1596702A (en) | 1967-12-07 | 1968-11-28 | |
| GB5778468A GB1217265A (en) | 1967-12-07 | 1968-12-05 | Improvements relating to valves for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED0054784 | 1967-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1576370A1 true DE1576370A1 (en) | 1970-03-19 |
Family
ID=7056030
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19671576370 Pending DE1576370A1 (en) | 1967-12-07 | 1967-12-07 | Valve for piston internal combustion engines |
| DE19671648448 Pending DE1648448B1 (en) | 1967-12-07 | 1967-12-07 | Flexural strength tester for foundry core sand mixtures |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19671648448 Pending DE1648448B1 (en) | 1967-12-07 | 1967-12-07 | Flexural strength tester for foundry core sand mixtures |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE1576370A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH646790A5 (en) * | 1980-06-24 | 1984-12-14 | Fischer Ag Georg | SAND TEST DEVICE FOR FOUNDRY SAND OR SAMPLE FOUNDATION SAND. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2903887A (en) * | 1955-06-20 | 1959-09-15 | Ralph F Taber | Instrument for testing properties of materials |
| US3194063A (en) * | 1962-03-01 | 1965-07-13 | Potlatch Forests Inc | Non-destructive strength test of structural lumber |
| DE1204429B (en) * | 1962-03-01 | 1965-11-04 | Potlatch Forests Inc | Procedure for testing and classifying timber |
-
1967
- 1967-12-07 DE DE19671576370 patent/DE1576370A1/en active Pending
- 1967-12-07 DE DE19671648448 patent/DE1648448B1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1648448B1 (en) | 1971-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1576370A1 (en) | Valve for piston internal combustion engines | |
| DE677032C (en) | Safety valve for steam boilers, especially for locomotives | |
| DE415417C (en) | Fluid-controlled injection valve for internal combustion engines | |
| DE675618C (en) | Safety valve for steam boiler | |
| DE832369C (en) | Spring-loaded control valve for high pressure gas bottles | |
| DE597677C (en) | Two-part piston for internal combustion engines | |
| DE655670C (en) | Shut-off device | |
| DE471844C (en) | Locking device | |
| DE1841193U (en) | VALVE CONTROL. | |
| DE430856C (en) | Thermostatic mixing valve | |
| DE806746C (en) | Regulating or shut-off valve | |
| DE630983C (en) | Device on pistons for internal combustion engines to prevent sticking from above controlled valves | |
| DE432107C (en) | Automatic over-pouring insert for laundry cooking vessels | |
| DE478510C (en) | Inwardly opening injection valve for internal combustion engines with pressure atomization | |
| CH151035A (en) | Cylinder cover with cooling space, especially for double-acting internal combustion engines. | |
| DE539501C (en) | Forced ladle valve | |
| AT147409B (en) | Internal combustion engine with jet atomization and additional air chambers. | |
| DE395539C (en) | Combustion gas jet blower | |
| DE832702C (en) | Valve basket | |
| DE451197C (en) | Hollow poppet valve for internal combustion engines | |
| DE527343C (en) | Shut-off element for replaceable cooling elements on motor vehicles and. like | |
| DE484800C (en) | Sealing ring for pipe valve of internal combustion engines or the like. | |
| DE383849C (en) | Single-flow needle valve for pressurized fluids, especially for use in internal combustion engines | |
| DE598988C (en) | Internal combustion engine | |
| DE575791C (en) | Waterproof closure for metal hot water bottles etc. like |