DE171528C - - Google Patents
Info
- Publication number
- DE171528C DE171528C DE1905171528D DE171528DA DE171528C DE 171528 C DE171528 C DE 171528C DE 1905171528 D DE1905171528 D DE 1905171528D DE 171528D A DE171528D A DE 171528DA DE 171528 C DE171528 C DE 171528C
- Authority
- DE
- Germany
- Prior art keywords
- valve
- cam drive
- thrust
- thrust cam
- spindle
- 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 - Lifetime
Links
- 230000001133 acceleration Effects 0.000 description 3
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
- F01L31/00—Valve drive, valve adjustment during operation, or other valve control, not provided for in groups F01L15/00 - F01L29/00
- F01L31/08—Valve drive or valve adjustment, apart from tripping aspects; Positively-driven gear
- F01L31/16—Valve drive or valve adjustment, apart from tripping aspects; Positively-driven gear the drive being effected by specific means other than eccentric, e.g. cams; Valve adjustment in connection with such drives
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Ventilsteuerungen, bei denen ein Schubkurventrieb einen Hebel bewegt,, der seinerseits mit der Ventilspindel gelenkig verbunden ist, lassen hohe Umlaufsgeschwindigkeiten der Maschine nicht zu, da die Massen des Hebels die vollen Beschleunigungen, denen das Ventil unterworfen werden muß, mitzumachen haben. Ventilsteuerungen, bei denen nur ein Schubkurventrieb verwendet ist, derValve controls in which a thrust cam drive moves a lever, which in turn is articulated with the valve spindle, allow high rotational speeds of the machine not to, since the masses of the lever have the full accelerations, which the valve must be subjected to have to go along with it. Valve controls where only one thrust cam drive is used, the
ίο unmittelbar auf die Ventilspindel einwirkt, haben den Nachteil, daß die hierbei sehr stark ausfallenden Schubkurven große seitliche Drucke gegen die Führung der Ventilspindel erzeugen.ίο acts directly on the valve spindle, have the disadvantage that the thrust curves, which are very pronounced, are large lateral Generate pressures against the guide of the valve spindle.
Eine neue Ventilsteuerung, die diese grundsätzlichen Mängel vermeidet, ergibt sich, wenn man zwei Schubkurventriebe verwendet, von denen der erste α das Glied b betätigt und dieses seinerseits durch einen zweiten Schubkurventrieb c unmittelbar auf die das Ventil öffnende Spindel d wirkt. Es braucht hierbei das Glied b, das ein Hebel oder ein geradlinig sich bewegendes Glied sein kann, nicht die vollen Beschleunigungen des Ventiles mitzumachen. Andererseits hat man es aber auch in der Hand, ihm solche, wenn auch geringere, Beschleunigungen zu erteilen, die geeignet sind, einen nicht zu steilen Verlauf der Schubkurve des das Ventil unmittelbar antreibenden Schubkurventriebes zu bedingen. Bei dieser Ventilsteuerung kann beim Schubkurventrieb α sowohl wie bei c das Glied b entweder die Rolle oder die Kurvenscheibe enthalten.A new valve control that avoids these fundamental shortcomings is obtained if two thrust cam drives are used, of which the first α actuates member b and this in turn acts directly on the valve-opening spindle d through a second thrust cam drive c. It needs the link b, which can be a lever or a linearly moving link, not to take part in the full accelerations of the valve. On the other hand, it is also up to you to give it accelerations, albeit lower, which are suitable for causing the thrust curve of the thrust cam drive directly driving the valve to not be too steep. In the case of this valve control, the link b can contain either the roller or the cam disk in the thrust cam drive α as well as in c.
In Fig. ι und 3 ist der Antrieb für den Schubkurventrieb α kreisend, in Fig. 2 geradlinig hin- und hergehend. Das Glied b ist in Fig. ι und 2 schwingend, in Fig. 3 geradlinig hin- und hergehend dargestellt.In Fig. Ι and 3 the drive for the thrust cam drive α is circling, in Fig. 2 straight back and forth. The member b is swinging in Fig. Ι and 2, shown in Fig. 3 to and fro in a straight line.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT27825D AT27825B (en) | 1905-06-19 | 1906-04-02 | Valve control with thrust cam drive. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE171528C true DE171528C (en) |
Family
ID=436489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1905171528D Expired - Lifetime DE171528C (en) | 1905-06-19 | 1905-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE171528C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368852A (en) * | 1992-04-03 | 1994-11-29 | Rohnto Pharmaceutical Co., Ltd. | Prolonged-release liquid type of pharmaceutical preparation comprising drug-resin complex and benzoate preservative |
-
1905
- 1905-06-19 DE DE1905171528D patent/DE171528C/de not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368852A (en) * | 1992-04-03 | 1994-11-29 | Rohnto Pharmaceutical Co., Ltd. | Prolonged-release liquid type of pharmaceutical preparation comprising drug-resin complex and benzoate preservative |
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