JPS55152418A - Upper dead center detector - Google Patents
Upper dead center detectorInfo
- Publication number
- JPS55152418A JPS55152418A JP6116479A JP6116479A JPS55152418A JP S55152418 A JPS55152418 A JP S55152418A JP 6116479 A JP6116479 A JP 6116479A JP 6116479 A JP6116479 A JP 6116479A JP S55152418 A JPS55152418 A JP S55152418A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- dead center
- upper dead
- combustion chamber
- pressure
- 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
Landscapes
- Testing Of Engines (AREA)
Abstract
PURPOSE: To accurately detect an upper dead center of a piston in an engine of any construction by providing a connecting member which can be connected to a bore communicated with a combustion chamber, and a pressure detecting pipe connected to the connecting member and adapted to detect the pressure in the combustion chamber.
CONSTITUTION: A connecting member 7 is screwed to a plug bore 6 formed in a cylinder 2, and a pressure detecting pipe 13 is fitted at its one end portion around a lower end surface 11 of the member 7. When a piston 3 is upwardly moved, the air pressure in a combustion chamber 4 is increased and a surface of a lubricating oil 14 on the distant side with respect to the member 7 raised. When the piston 3 is downwardly moved, the pressure in the combustion chamber 4 is decreased so that the oil level on the side of the member 7 is raised with the oil level on the distant side with respect thereto lowered. Therefore, when the piston 3 exceeds an upper dead center, movement of the surfaces of the lubricating oil 14 are stopped accordingly to be then moved in the opposite direction. Thus, an upper dead center of the piston in an engine of any construction in the levels of the lubricating oil 14 in the detecting pipe 13. Therefore, an upper dead center of a piston in an engine of any construction can be accurately detected with the detecting operation not influenced by the arrangement of a plug 6 and the shape of the upper surface of a piston 3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6116479A JPS55152418A (en) | 1979-05-18 | 1979-05-18 | Upper dead center detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6116479A JPS55152418A (en) | 1979-05-18 | 1979-05-18 | Upper dead center detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55152418A true JPS55152418A (en) | 1980-11-27 |
Family
ID=13163221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6116479A Pending JPS55152418A (en) | 1979-05-18 | 1979-05-18 | Upper dead center detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55152418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014174881A1 (en) * | 2013-04-24 | 2014-10-30 | 本田技研工業株式会社 | Piston top-dead-center detection method and device |
-
1979
- 1979-05-18 JP JP6116479A patent/JPS55152418A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014174881A1 (en) * | 2013-04-24 | 2014-10-30 | 本田技研工業株式会社 | Piston top-dead-center detection method and device |
| JP2014215122A (en) * | 2013-04-24 | 2014-11-17 | 本田技研工業株式会社 | Detection method of piston top dead center and device therefor |
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