JPS54117842A - Four-cycle engine - Google Patents
Four-cycle engineInfo
- Publication number
- JPS54117842A JPS54117842A JP2434878A JP2434878A JPS54117842A JP S54117842 A JPS54117842 A JP S54117842A JP 2434878 A JP2434878 A JP 2434878A JP 2434878 A JP2434878 A JP 2434878A JP S54117842 A JPS54117842 A JP S54117842A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- oil
- cylinder
- bottom dead
- dead point
- 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.)
- Granted
Links
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
PURPOSE: To reduce the slapping noise of a piston by forcibly supplying lubricating oil between the piston and the wall surface of the cylinder when the piston is located at the bottom dead point to thereby lubricate it with sufficient oil amount.
CONSTITUTION: When air intake and exhaust cams 13, 14 are rotated upon rotation of a cam shaft 12 driven synchronously with a crankshaft 6 upon operation of an internal combustion engine, tappets 15, 16 are reciprocated to open or close air intake and exhaust valves 8, 9. Oil pumps 22, 23 discharge lubricating oil upon interlocking with the valves 8, 9 in the vicinity of the bottom dead point of the piston 4 to supply the oil from lubricating oil inlets 19, 20 into a cylinder 3. This oil is supplied to between the skirt portion 4a of the piston 4 disposed at the bottom dead point and the wall surface of the cylinder 3 to form an oil film by the supplied oil to thereby control the inclindation of the piston 4 via the oil film when changing the moving direction of the piston. Thus, it can reduce the slapping noise of the piston.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2434878A JPS54117842A (en) | 1978-03-03 | 1978-03-03 | Four-cycle engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2434878A JPS54117842A (en) | 1978-03-03 | 1978-03-03 | Four-cycle engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54117842A true JPS54117842A (en) | 1979-09-12 |
JPS5749723B2 JPS5749723B2 (en) | 1982-10-23 |
Family
ID=12135679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2434878A Granted JPS54117842A (en) | 1978-03-03 | 1978-03-03 | Four-cycle engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54117842A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5954717A (en) * | 1982-09-24 | 1984-03-29 | Akasaka Tekkosho:Kk | Method of oiling timely cylinder of diesel engine |
US5201805A (en) * | 1992-04-06 | 1993-04-13 | Hans Schubert | Wear reducing piston for combustion engine |
JP2016070073A (en) * | 2014-09-26 | 2016-05-09 | 富士重工業株式会社 | Oil pump |
-
1978
- 1978-03-03 JP JP2434878A patent/JPS54117842A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5954717A (en) * | 1982-09-24 | 1984-03-29 | Akasaka Tekkosho:Kk | Method of oiling timely cylinder of diesel engine |
JPH0240847B2 (en) * | 1982-09-24 | 1990-09-13 | Akasaka Tetsukosho Kk | |
US5201805A (en) * | 1992-04-06 | 1993-04-13 | Hans Schubert | Wear reducing piston for combustion engine |
JP2016070073A (en) * | 2014-09-26 | 2016-05-09 | 富士重工業株式会社 | Oil pump |
Also Published As
Publication number | Publication date |
---|---|
JPS5749723B2 (en) | 1982-10-23 |
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