JPS5765475A - Poppet lift control mechanism for poppet valve - Google Patents
Poppet lift control mechanism for poppet valveInfo
- Publication number
- JPS5765475A JPS5765475A JP13829080A JP13829080A JPS5765475A JP S5765475 A JPS5765475 A JP S5765475A JP 13829080 A JP13829080 A JP 13829080A JP 13829080 A JP13829080 A JP 13829080A JP S5765475 A JPS5765475 A JP S5765475A
- Authority
- JP
- Japan
- Prior art keywords
- poppet
- passage
- spring
- oil
- 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.)
- Pending
Links
Abstract
PURPOSE: To attain infinite positioning of a poppet for a poppet valve within a prescribed life amount by contituting a poppet lift control mechanism such that a predetermined input signal is provided to a pilot spool within the poppet to move the poppet in accordance with the distance of movement of the pilot spool.
CONSTITUTION: If a coil 26 of a solenoid 8 is energized to have a predetermined exciting force, a movable iron core 25 is lifted a distance corresponding to the exciting force against a second spring 27 so that a pilot spool 12 adapted to contact with a bottom face of the iron core 25 is positioned by an urging force of a first spring 24. Upon movement of the spool 12, connection of a supply passage 14 and another passage 18 is intercepted by a land 20 while a discharge passage 15 is connected to the passage 18 by way of an annular groove 19 so that the pressure of oil in a chamber 10 becomes equal to a tank pressure. At this instance, a poppet 9 is moved upwardly by the pressure oil at a bottom face thereof against a spring 11 to a position in which the passage 15, 14 connecting to the passage 18 are intercepted by the lands 21, 20, and thus supply to and discharge from the chamber 10 of oil is stopped whereby the poppet 9 is stopped at an accurate position to define a predetermined opening of the valve.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13829080A JPS5765475A (en) | 1980-10-03 | 1980-10-03 | Poppet lift control mechanism for poppet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13829080A JPS5765475A (en) | 1980-10-03 | 1980-10-03 | Poppet lift control mechanism for poppet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5765475A true JPS5765475A (en) | 1982-04-21 |
Family
ID=15218428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13829080A Pending JPS5765475A (en) | 1980-10-03 | 1980-10-03 | Poppet lift control mechanism for poppet valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5765475A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421545A (en) * | 1993-09-03 | 1995-06-06 | Caterpillar Inc. | Poppet valve with force feedback control |
| US6769252B2 (en) | 2001-12-10 | 2004-08-03 | Caterpillar Inc | Fluid system having variable pressure relief |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5551105A (en) * | 1978-10-10 | 1980-04-14 | Control Concepts | Normal close valve assembly for controlling liquid |
-
1980
- 1980-10-03 JP JP13829080A patent/JPS5765475A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5551105A (en) * | 1978-10-10 | 1980-04-14 | Control Concepts | Normal close valve assembly for controlling liquid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421545A (en) * | 1993-09-03 | 1995-06-06 | Caterpillar Inc. | Poppet valve with force feedback control |
| US6769252B2 (en) | 2001-12-10 | 2004-08-03 | Caterpillar Inc | Fluid system having variable pressure relief |
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